Project Scimitar MV6

Project Scimitar MV6

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lozzzzzz

Original Poster:

339 posts

159 months

Saturday 13th August 2011
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I'm well chuffed with this afternoons work, once again its not going at break neck speeds.

I guess its not to everyones taste, most would probably prefere and interior of some sort smile , but its ecxactly what I wanted smile (last two photos)

Cleaned up and put the heat shields back on, and painted a few scratches round the engine bay


Painted the new transmission tunnel,


Then put the engine back in for, hopefully, the last time, its all bolted in tight now, here's a piccy looking up at the gear lever assembly from below with it all in place


And above, you can see there is a lower gromitt and an upper one (wrapped around the gear knob)


I painted the surround thing black and bolted it down the gaiter clipped in place, this is all usually tucked away under the leather gaiter in the omega, but I like its functional look.



Might try and get the fuel lines put in properly tonight and clamp down all the pumps and filters.

More to come

lozzzzzz

Original Poster:

339 posts

159 months

Saturday 13th August 2011
quotequote all
Went to the garage after diner and got side tracked, the fuel lines still aren't done, but the clutch reservoir is smile

I got this of an old civic in the most amazing scrap yard in the country, with all the other stuff I got it must have cost about £1 instead of £15 for the ones on ebay.


The bracket was so rusty I threw it and welded a spring type hose clamp to a 2mm SS sheet. Drilled some holes and painted it, then rivetted it to the bulkhead just above the clutch master. I'm really pleased with how it looks, just need a smaller diameter clamp for the reservoir end of the delivery hose, as you can see in the photos.




I'll try again with the fuel lines and pumps and stuff tomorrow.

lozzzzzz

Original Poster:

339 posts

159 months

Sunday 14th August 2011
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Made some good progress today too, although there is a little less to see perhaps, there was a lot of head scrathing over electrics, but I think I've got it all planned out now.

Drilled (and teasdaled) the holes for the fuel lines into the engine bay.


I used another set of heat sheilding stolen from the omega in the scrap yard to help stop scuffing and as the exhaust is below.


Then popped the filter on. There are three filters, one pre injectors, one pre high pressure pump and one between the fuel tank and the low pressure pumps.

Pretty chuffed with how they look in the engine bay

The fuel lines go up through the drivers sill and across to the swirl pot area. They're not clamped in place yet as I've still got to do the roll bar



All the fuel line is 8mm ID but the inlet to the high pressure pump is 15mm, so I had to make up a reducer to plmb it in. This is the end of a bit of SS that I use as a jack handle. Its the only SS bar I've got so its gradually getting harder and harder to jack up cars smile I drilled down the centre then cut it off.


The swirl pot is now painted, I think it looks slightly less bad in black smile and now bolted in and nearly plumbed in. Just need to connect the lines that go forward and clamp the high pressure pump down, I'm thinking so spinge or something will help keep the noise down a bit.

All the front section of the loom was pulled through into the passenger foot well and exposed, there are few things I'm getting rid off, like the brake pad wear wires, and just trying to neaten it up. Its tricky trying to find power to run all the new things I need to run. eg, the ECU needs a feed, the injectors need a feed, the coil needs a feed, the pumps all need a decent feed. I'm also trying to reuse unwanted bits of loom for the LPG gear, so it all goes through one fat bit of loom instead of having loose wires everywhere. Long story short, its taking a while to plan ahead.


These cables are helping though with big fuses (stolen from the omega)


I found this accident waiting to happen while going through the wiring, all the insulation was hard and cracked there is loads of wire exposed. I strongly recommend everyone look at this section on their cars, the wires that go to the started and reverse light switch, its an easy fix.


I also started looking at the coolant plumbing so had the radiator back, I think I know what to do with it all now, but I need an expansion tank and don't fancy using the bulky omega one.

The engine will get its cold air from two pipes that will run straight forward from the inlet manifold to the cowling above the radiator, I'll cut two massive holes and put some cone shaped (boyracer) filters in, hidden away safely above and infront of the radiator.


Might get some done tomorrow morning, otherwise more to come on tuesday

lozzzzzz

Original Poster:

339 posts

159 months

Monday 15th August 2011
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Thanks Pacman smile Yeah the interior was binned a couple of years back in favour of "adding lightness" I shaved off well over 50kg, which equates to a 5% increase in acceleration and a slight inpovement in economy too.

I know that doesn't sound appealing to a lot of people, but what I'm after is a driving machine that can be used every day, so the heater is staying, the mk2 MR2 seats are confortable, the bucket seat will be kept in the garage for track days, there will be a usb head unit fitted with a cheap pair of speakers, but other than that all the sound deadening and trim parts are gone. All the original dash will still be there with all the switch gear and heater controls, thats just out for wiring at the moment.

When it was on the raod before, it did help to wear ear defenders on the motorway, that got some looks smile but that was mainly due to the noisy (read worn out) gearbox thats now gone.

I forgot to add the photo of the swirl pot and pumps even though I wrote about it, below the photo of the lathe. So here the swirl pot arrangement

lozzzzzz

Original Poster:

339 posts

159 months

Tuesday 16th August 2011
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The Scimitar has so far got the better of me today.

I started off "harvesting parts and connectors from the omega, this went pretty well, I found loads of relays I could use and the fuse box, which is the reason for digging into the omega in the first place. I thought long and hard about how to wire the new ecu in and concluded I should use things that are now redundant due to the essex going, like the coil feed, the fan feed (thats on a relay under the bonnet now), the auxilary lights as Iwon't need them now, etc. But I didn't want the engine running through that crusty old fuse box. All good in theory.
The omega now


Some of the bits I got out


And the mess that is the scimitar wiring at present


I've only done one connection and thats all it took to figure out that the soldering iron just isn't man enough for the thicker wires, so I'll have to get a 60 watt beasty tomorrow if I can find one.

So I moved onto the plumbing instead, thinking this would be easy. After a little research it seems ali or SS expansion tanks are really expensive so I'll be sticking with the omega one. All the LPG and car heater hose connections are on the engiens right side, leaving just one pipe of the left, the hot coolant from the engine to the radiator, so I cut some pips and got this to fit nicely (on the right in the photo)


But I'm questioning whether this will work now and I would really appriciate some input, what are your thoughts on the following.

The coolant goes in the top of the radiator and out the bottom, and on this engine there is no filler cap at the engine outlet like the essex. So will the radiator fill up with all the air in the system?

Either it will all push through with the coolant and end up in the expansion tank (the highest point)

Or

It will collect in the radiator meaning only half of the radiator will be doing any cooling.

Reasuringly, the radiator in the omega is the same arrangement with the only difference being that there seems to be a bleed scree in the top of the radiator. So I guess once all the air is out it should stay that way, but will it come out eventually without the bleed screw in the radiator???

lozzzzzz

Original Poster:

339 posts

159 months

Tuesday 16th August 2011
quotequote all
CORRECTION, the omega radiator has a tiny hose that goes the the top of the radiator (the the downstream end tank) to the expansion tank, its not a bleed screw at all, my bad. I guess this means I won't get away with it like it is frown

lozzzzzz

Original Poster:

339 posts

159 months

Wednesday 17th August 2011
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Another slow day today, I'm not sure whats wrong with me, I wasn't really feeling it today, but I got some things done.

I put the ali tube in the vice and put a flat on it, then drilled it and put a screw in type car tire valve. I could use this as s manual bleed or a plumbed in one with the valve removed.



I also mounted the little vacuum reservoir just below the very foward most part of the master cylinder, I'm quite pleased with how this looks. The paddle in the plenum is vacuum opporated so needs this reservoir so it can work under full throttle (i.e. no vacuum in the manifold).



And the last little job I did was to mount the LPG vaporiser,


After some comments on the PPC forum I've decided to use shrink wrapped butt crimps on the loom, I've even bought an expensive crimping tool to do the job with.

More to come (hopefully some actually progress tomorrow)

lozzzzzz

Original Poster:

339 posts

159 months

Thursday 18th August 2011
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I had a good day today, not got a huge amount done, but loads of thinking and I'm pleased with how its all going. I put in lots of effort, but the real steps forward will be tomorrow when it all goes together, I'm hoping to have the fan in, the bumper on, the nose supports in, the radiator in, the expainsion tank in, the vaporiser in and all the cooling system plumbed in ready to go. Then If time I can start on mounting the LPG injectors safely, and perhaps even make a start on either the loom of the exhaust manifolds, but lets be honest that might be what I get done this summer.

I cut off the omega expansion tank mounts from the car shell and adapted them to fit the Scim, this is the lower of the two mounts now welded to the right side nose support with the vaporiser mounted welded on too, and its now all painted in stone chip.


This means there is very little stopping me putting the front back together perminantly, except the fans. I wanted these to be better than a mouse sneezing like the Scim originals, and what is free and sitting on the drive, an omega blower. Its a beast, it has to blow through a bit AC radiator and reach the ducting through to the rear of the car. So out it came. What followed was hours of um-ing and ah-ing but. Long story short, it'll sit in the left side where one of the originals used to sit and take its air from the space infront of the radiator. I'm going to simplify the heating system (even more). It'll either blow hot air on the windscreen and your feet, or it'll blow cold though the outer most vents, thats it, the central consol vents are going and the number of controls will be reduced. I'm also going to do my best to get the mych better looking omega heater matrix to fit whats left of the scimitar heater box, its almost the right shape smile

Here's the fan motor half way through being butchered


And with a bit of the old smiths motor grafted on, it works a treat, it blows a gail into the car (not yet finished here).


I'll block off the other inlet down the drivers wing, its plenty powerful enough with this motor.

Annoyingly the camera ran out of battery. I'll take more photos tomorrow, and try to do a better job explaining the heater modifications.

More to come.

PS, the engineering is finally doing the last hub smilesmilesmile I've been bothering him about it for a while now and he called me tonight at 9 as he was starting the job, I feel kinda bad about it now smile

Edited by lozzzzzz on Thursday 18th August 22:45

lozzzzzz

Original Poster:

339 posts

159 months

Friday 19th August 2011
quotequote all
Today, I wanted to do loads and its not all happened but still a good day I think.

This is the finished fan blower, the only addition being a little filler to block some of the bigger holes. I'm really pleased with how strong this is even before the filler, the single zip tie seems to have clamped the addition in place really tightly.


Its mounted with a shet of SS screwed to the housing through the original blower inlet hole (bumper removed)


And sits like this inside the front of the car


The shrink wrap butt connectors came in the post today, they're awesome. They take a little longer to shrink than normal shrink wrap but it seems the inside layer has a much lower melting point so as it starts to shrink a sealing glue comes oozing out, completely sealing the connection, highly recommended.



Got the bumper fully fitted today, it took a while with the blower in the way, I should have mounted in such a way that meant it could be fitted with the bumper in situe.
This is the nose braket, with the vaporiser mount and the expansion tank mount in place



Spent the rest of the afternoon on the loom, which is coming along nicely now, until the lighter ran out of the gas frown


More to come tomorrow

lozzzzzz

Original Poster:

339 posts

159 months

Saturday 20th August 2011
quotequote all
Got the front section of loom finished today and the fuse new (omega) fuse box is all wired in eccept for the new addition.




More to come soonish

lozzzzzz

Original Poster:

339 posts

159 months

Thursday 25th August 2011
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Got back from scotland today and did a little in the afternoon.

I left the wiring and tried to get the header box how I wanted it. First I cut back all the rivets and took it apart


This was nessesary to get the omega heater matrix to fit as its a bit taller and slightly wider.


I was planning on keeping the basic route the air takes the same as before. The larger matrix makes it a little tighter for the air to come back around and head up tot he windscreen vents, but the new blower should get round this to some extent.

I cut a big hole in one side of the heater box to let the matrixs' rubber end to protrude a little making it fit better



The lower paddle is removed and a section of it welded back in place perminantly to divided the air exiting the matrix, half to the feet and half to the windscreen.


There will only be one control now, this opporates a new paddle that either allows air into the heater box or completely closes it off


At this point the b****y camera batteries gave up again so I'll take a piccie of the inside of the heater box tomorrow and explain what I'm going for.

More to come

lozzzzzz

Original Poster:

339 posts

159 months

Friday 26th August 2011
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Had a resonable day at it today, got some boring diesel car stuff done and on a more exciting note I bought the ECU that'll be running the engine, they emailed across the software, its so cool smile

Took a photo of the inside of the air and put some colourful arrows on it. The cold air enters the box as it used to (Blue arrows) and goes through the matrix as it used to (red and purple arrows). There is now a flat that can be closed (green arrow) to stop any air getting into the heater box at all, this is the only control it will have. You can see that half the hot air will go to the feet area (red arrows) and the other half should go up to the windscreen (purple arrows).


So to heat the car I'll close the outer vents, and open the heater box. To cool it, close the heater box and open the outer vents or windows, The new fan will still have 2 speeds. Simples smile

I cut the hole a little bigger to help get more air to the windscreen


And the finished and painted (badly) item


The centre vents have been closed off to further simplify the dash and switching.


The hoses to the matrix were connected prior to putting it in as the tails are too short to reach from in the engine bay. I added a load of out hose protection to stop them wearing through where they pass through the bulk head.



The mount holes needed a little "teasedaling" and the matrix hose tails meant it had to mounted 5mm ish further to the left


I put another large coolant hose over the two small hoses to the matrix and tied it back to the bulkhead to stop any relative movement between the bulkhead and hoses. and welded a little bracket to the large stainless hose that originates from the back of the engine. So the large hose that'll move with the engine and the smaller hoses that'll be still with the body shouldn't touch each other. The photo makes it looks close but there is about 1cm between them. The bracket mounts at the rear of the cam cover.




If anyone wants to read more, I'll explain the routing of the hoses. Refer to the second of the three photos above. The large one is the return from the radiator to the back of the engine. I've included the section of SS that came of the omega for tis T piece. The hot water comes from the back of the heads through the small hose that you can see closest the plenum chamber at the top left of the photo, it then passes under the tiny vacuum hoses and heads down to the lower waer connection on the LPG vaporiser. The coolant will then come out the top hose on the vaporiser to the heater matrix (this is the hose that passes closest to the servo). The coolant then come out of the matrix top hose and returns to the T piece in the large SS hose. From here it'll return the engine.

Obviously there is a large coolant hose on the other side of the engine for when the thermostat is open.

Today was a lot of head scratching, so hopefully tomorrow will see more putting back together after I've bought a few jubilees and so on.

More to come

lozzzzzz

Original Poster:

339 posts

159 months

Saturday 27th August 2011
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I think I got on fairly well today, I've lowered my expectations of what I can get through in a day as I do work really slowly, I must literally take half the time, looking and thinking it through, anyway.

Got the SS M6 bolts and nylocs this morning so I've bee able to put the nose supports in, and horns,



I also got some more hardener in town this morning so was able to use the body filler again. I sealed up in right side blower pipes as there is only one blower now. The drivers side vent will get its air from the left side via the back of the heater box (but not going through it). I clamped it shut in the vice then shoved some filler in it to close the gaps properly.


Then put a load inside too, to help it flow a little better (perhaps a little overkill for a vent smile )


I've rerouted the hoses to be low. So the hot from the engine to the vaporiser, and from there to the matrix both take the low road along the chassis, this photo is a bit of a shocker but you can see the hoses going up to the vaporiser on the right and down to the chassis legs


Leaving just the two hoses up high, the main one from the radiator and the return from the matrix, I can't move the big hose without taking hte engine out and redesigning the outlet (and I can't be arsed with that). So I'll have to bleed this carefully and with a CBS bleed insert, on the plus side the expansion tank can be raised by nearly a foot with all the hoses remaining connected.


The expansion tanks main hose goes down to an inlet on the radiator via a recycled bit of omega SS tube.


The main hose from radiator to engine is now connected up, it goes over the front of the head (lower than the bleed point) and down over the rack then round.



I'd been pondering the Coil pack for a while as it used to be behind the head, in the hardest to reach place on earth. That will now be mounted on the front suspension tower support bar thingy. Recycled the bracket.


Put it on the bar


you get teh idea



And now its covered in stone chip, drying


More to come


lozzzzzz

Original Poster:

339 posts

159 months

Sunday 28th August 2011
quotequote all
Lots more looking and thinking today, but puhaps a little more productive than usual in terms of knowing where I'm going with the exhaust manifolds now.

First of all I put the painted suspension tower strut back on and mounted the coil pack to it. The I found a series of hoses that meant I could bodge up the power steering pump until I've decided whether or not I need it (when the car is running) I still need to mount it properly.



Next was to start tacking the job I've been putting off for a while, making the exhaust manifolds. I cut the flange off one of the existing essex tubular manifolds, and attempted to make the centre pipe the right profile to fit the oval port shape of the header plate, it soon became apparent that this wasn't going to be the right size pipe. As you can see.


I then spent a long long time on the internet trying to the correct diameter and length primaries for this engine. I found a calculator based on A Graham Bells book (I'm lead to believe this is one of the bibles in tuning). http://www.wallaceracing.com/header_length.php

It suggest I need 1.52mm diameter 26.36" length primary pipes. This is frustrating as the original maniold has primaries around that length, but not quite the right diameter especiall aound the bends.

I've got some exhaust pipe up in the rafters of the garage so I measure it up and found it to be the perfect diameters, so the butchery began.


Shaped it a bit


And bingo, a perfect fit.



I'm doing the bend by cutting sections out, bending whats left and welding them closed, very time consuming.


But we're getting there slowy


More to come

lozzzzzz

Original Poster:

339 posts

159 months

Monday 29th August 2011
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I'm getting on fairly well with the bigger tube now, I've made a jig to help cutting the tube.


The first tube is all finished and welded up now, before weld



And after welding, not too neat yet but getting used to the SS welding again.


Made some ground on the seond primary pipe now too,




More to come

lozzzzzz

Original Poster:

339 posts

159 months

Monday 29th August 2011
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Got some more done this afternoon smile

You know when your wire wheel is about to give up when it keeps spitting bits of wire at you smile


Got the two pipes all welded up after lunch, The second pipe isn't attached to the header plate yet as I have to extend the primaries a bit cos they've lost length in all the bends


This is where I'm at at the moment. Again the outwe two pipes aren't attached yet but al the bends are now in place and the tubes end in the right place. With the originals bottoming out on the road I was reluctant to make the collector the same design as it leaves at least one pipe a little exposed to damage, especailly as they're bigger diameter, so I'm going to make a flat collector, that goes into a 2.5 inch exhaust. Thats a good increase on the original 2.25 inch. The websire suggests 3 inch but thats so big, its heading for boyracer terratory. And The surpra I had made 200bhp on one 2.5 inch pipe so I can't see it being a big restriction for the v6 (having two pipes an all).

Some photos then.






The pipes look way larger than the originals but I think this is partly cos they're closer together, so here's a side by side photo to comparison.


There is still room enough to get a fist between the wheel and the manifold with the suspesion jacked up nearly to where it'll be smile


More to come

lozzzzzz

Original Poster:

339 posts

159 months

Monday 29th August 2011
quotequote all
Well, all the primary pipes are fulled welded up, ground back and "wire wheeled". Each pipe has been extended so that they all fall between 26.25 and 27 inches in length, and line up with each other for the collector to be made next. I'm chuffed with how they've come out, the welding might look like bird poo on the outside but I made sure there were no burrs before closing each bend section and they look really smooth inside smile I might wrap them to hide the welds smile

They're well tacked in place at the moment so besides the collector its just the pipes to header plate that needs welding up now, I'll do that really slowly I think to keep warping to a minium. Oh and make the other side!







I might have got a little too enthusiastic with the camera smile

lozzzzzz

Original Poster:

339 posts

159 months

Tuesday 30th August 2011
quotequote all
Had to head for town this morning for some more cutting discs, welding wire and wire wheel. Then I got on with welding up the pipes to the header plate, the right side is all done now, I'll do the collector when I know more about what exhaust system I'm going to fit.

Here's a little piccie so of the limited progress made on the left side.


I got this far and decided to give it a break as my face was beggining to hurt. There are so much dust and fumes from this job, I soon get a headache and can feel the dust in my head its horrible, so I wear this beastly, full face dust mask, its really heavy and the it rubs my face every time I put it on and take it off frown

That enough of the wining! smile

So instead I thought I'd have a go on the lathe. I've hatched a little plan to do away with the PAS pump until I know for sure if I need it or not. Its involved changing the pulley but otherwise the pump has remained unharmed, and I've already bought another pulley incase I want the pump after all.

So I took one of the old cam belt idlers, which I'm sure isn't that old at all, the bearing feels really tight.


And took the edge off it on the lathe


Then took the locating centre of the pulley out a bit, from this


To this


Made a collar from an old smaller pulley I had lying around


The collar holds the pulley in the right place, so its centre is over the centre of the bearing, so there is no nasty loads on the bearing.


And here you have it, ready to be welded on.


The collar is conveniently cast iron so I'll grind some weak points into it and when the welding is done the collar can be broken off and the pulley welded on the back too.

I've yet to make the mount for this but I think it'll end up being better than having a reseroir full of oil perminantly circulating.

Hopefully I'll get more done on the manifold tomorrow.

More to come

lozzzzzz

Original Poster:

339 posts

159 months

Wednesday 31st August 2011
quotequote all
I spent today looking at the wiring and I've nearly completed the wiring from the bulkhead mounted terminal and most of the ECU conectors too. I phoned a friend and aasked a few questions about when he did his loom and he suggested red insulation tape and a sharpy perminant marker, and label everything. So I have been and it seems to work really well.

I've started making the mounting face for the terminal.



And here's the new bit of loom coming together



I'll get somemore tubes of araldite and flood the area where the connecotrs are soldered on to stop any movement and seal it up (after I've soldered on lots of spare connections just in case).

More to come.

lozzzzzz

Original Poster:

339 posts

159 months

Thursday 1st September 2011
quotequote all
Made great progress with the wiring today, it might not look much but this section of loom has taken two days to make and represents "breaking the back" of the wiring job smilesmilesmile

I'm well pleased with it, whats left to do is much easier.

To recap: This is the connector that was the omega ECU, I angle grinded the circuit boards off and used it as an engine connection. So this will mount in the bulkhead and every connection to the engine will go through this terminal.

This is the connectors all soldered on (with 7 spare wires). I put some plastic sheet around the connecotrs and flooded it with araldite to seal it up, make sure there can be no shorts and make it more robust. This is the part that will be facing backwards towards the glove box.


I started off doing all the connections between the engine terminal and ECU terminal


And now its a whole independant section of loom, fully labelled so it can be removed and worked on in future.

So top left is the engine terminal (bulkhead mounted), bottom left is the ECU terminal and laptop serial connection, next to the serial connection are the LPG injector intercept connections to the LPG ECU, and top right is the connection from all that stuff to the cars loom, through a great little rachet terminal that I harvested from the omega passenger footwell smile

I've really enjoyed doing the loom I think I'm weird smile

More to come.