What Engine for 500BHP
Discussion
Pumaracing said:
turbonutter said:
I can see that being true for a 4pot or some v engines, but does it hold true for the alfa V6 with its offset journal crank?
Yes. Stop f**king about and don't argue with an engine building dog.
He's just checking the cam timing in that pic........ ;-)
Max_Torque said:
Looking at the head, the water way break through is very likely to give a poor clamp load, and hardly any "back up" capability. I'd say, looking at the those pics there is no sign of excessive det, and the gasket failure is simply a peak pressure overload one. (Pmax, not PKmax)
I think you're going to have to approach one of the custom gasket firms and get something specific designed to suit that situation. You may also wish to consider getting the heads welded to remove the "weak" spot too.......
Smirk I think you're going to have to approach one of the custom gasket firms and get something specific designed to suit that situation. You may also wish to consider getting the heads welded to remove the "weak" spot too.......
Not Much Process with the engine build as I have been busy with other things.
I did get the pistons Matched to the old ones weight wise - It might not be necessary, but its not going to hurt,
Also got the liners back with the O-rings installed. SO I have more ore less everything now for the rebuild.
Also the Exhaust has some new Bosses Welded on for the Dual Lambda, Extra EGT sensors & Exhaust Pressure Take Off.
The New Gear Lever I havebeen Making is finally completed & works really well.
Also Have a new throttle pedal and Pot from a Vauxhall for the Drive by Wire Function..
I did get the pistons Matched to the old ones weight wise - It might not be necessary, but its not going to hurt,
Also got the liners back with the O-rings installed. SO I have more ore less everything now for the rebuild.
Also the Exhaust has some new Bosses Welded on for the Dual Lambda, Extra EGT sensors & Exhaust Pressure Take Off.
The New Gear Lever I havebeen Making is finally completed & works really well.
Also Have a new throttle pedal and Pot from a Vauxhall for the Drive by Wire Function..
Ok Finally finished playing with the car changes & had time to build the engine...
Heads skimmed (10 tho taken off)
New Pistons 8.4:1 - Weight matched to last set of pistons.
Liners with stainless o-ring in top face.
New Coils from Audi R8(among others) with my adaptors.
Full strip and rebuild - checked the bearings an no signs of any impending failiure there, so that is one thing that wont be a problem.
|http://thumbsnap.com/xSz2tU9n[/url]
Thats all for a while as its back to work for me untill october, then its dyno time for the engine.....
Heads skimmed (10 tho taken off)
New Pistons 8.4:1 - Weight matched to last set of pistons.
Liners with stainless o-ring in top face.
New Coils from Audi R8(among others) with my adaptors.
Full strip and rebuild - checked the bearings an no signs of any impending failiure there, so that is one thing that wont be a problem.
|http://thumbsnap.com/xSz2tU9n[/url]Thats all for a while as its back to work for me untill october, then its dyno time for the engine.....
I've gone a bought myself a metal one. 
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
Nowhere near as ambitious as your Stratos but...
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
Nowhere near as ambitious as your Stratos but...
turbonutter said:
Looks like a fun Project
and with a lot of shared parts with the stratos (well a few) Steering column door Handles to name a couple...
Ferrari 328 headlights etc...and with a lot of shared parts with the stratos (well a few) Steering column door Handles to name a couple...
My Punto Sporting has a genII 1598cc 128 engine and there have been a few genIII 16V 128 transplants over the years. While Punto HGT's are dirt cheap it makes sense to drop fifty or so extra bhp in there.
There's a wide arch shell tucked away in deepest darkest Essex that's tempting me to flog the Punto and MX5 so I can use my red X1/9 and have a project.
http://www.ebay.co.uk/itm/Lancia-Stratos/281397328...
They won't take my X1/9 as a part exchange.
They won't take my X1/9 as a part exchange.
Edited by Liquid Knight on Tuesday 29th July 16:16
So Back home again & starting to get the car put back together readu for mapping - Engine is in and first job was to fill up the fuel system & check for leaks - easier to fix any issues now, before I add the rest of the parts...
Fuel system ran up to 3bar & no leaks, so all good - until I checked the fuel level in the tank - the new fuel resistant flexible filler hose wasnt resistant to Shell V-power.. Picture is after leaving the tank full overnight.
This was the thin wall (2mm) very flexible type - soon to be replaced with the thicker walled less flexible type. I have a sample of the thicker hose in V-power and so far so good.
I filled the tank to capacity & including the swirl pot it holds 60L wich is a good improvement over the 44L the last tank held, so well worth the effort.
SHould have the engine wiring loom next week, so nearly ready for mapping
Fuel system ran up to 3bar & no leaks, so all good - until I checked the fuel level in the tank - the new fuel resistant flexible filler hose wasnt resistant to Shell V-power.. Picture is after leaving the tank full overnight.
This was the thin wall (2mm) very flexible type - soon to be replaced with the thicker walled less flexible type. I have a sample of the thicker hose in V-power and so far so good.
I filled the tank to capacity & including the swirl pot it holds 60L wich is a good improvement over the 44L the last tank held, so well worth the effort.
SHould have the engine wiring loom next week, so nearly ready for mapping
turbonutter said:
So Back home again & starting to get the car put back together readu for mapping - Engine is in and first job was to fill up the fuel system & check for leaks - easier to fix any issues now, before I add the rest of the parts...
Fuel system ran up to 3bar & no leaks, so all good - until I checked the fuel level in the tank - the new fuel resistant flexible filler hose wasnt resistant to Shell V-power.. Picture is after leaving the tank full overnight.
This was the thin wall (2mm) very flexible type - soon to be replaced with the thicker walled less flexible type. I have a sample of the thicker hose in V-power and so far so good.
I filled the tank to capacity & including the swirl pot it holds 60L wich is a good improvement over the 44L the last tank held, so well worth the effort.
SHould have the engine wiring loom next week, so nearly ready for mapping
A friend had the same problem with some hose from Viper.Fuel system ran up to 3bar & no leaks, so all good - until I checked the fuel level in the tank - the new fuel resistant flexible filler hose wasnt resistant to Shell V-power.. Picture is after leaving the tank full overnight.
This was the thin wall (2mm) very flexible type - soon to be replaced with the thicker walled less flexible type. I have a sample of the thicker hose in V-power and so far so good.
I filled the tank to capacity & including the swirl pot it holds 60L wich is a good improvement over the 44L the last tank held, so well worth the effort.
SHould have the engine wiring loom next week, so nearly ready for mapping
They did put it down to a supplier issue, they replaced the hose FOC and it has been good ever since
I had a similar issue with my fuel tank a few years back... I used a rubber between a seal at the top of my tank that was supposed to be fuel proof.... it wasn't until a year later I found it was a molten mess at the bottom of the tank.
Some rubber is only fuel 'resistant' rather than fuel 'proof'... its a bit of a mine field as IMO a lot is miss-sold... I put an off cut of new stuff in a glass of petrol and have left it in there for 2 years now so that I can see if it starts to break down lol
Some rubber is only fuel 'resistant' rather than fuel 'proof'... its a bit of a mine field as IMO a lot is miss-sold... I put an off cut of new stuff in a glass of petrol and have left it in there for 2 years now so that I can see if it starts to break down lol
Had my new fuel hose in V-power for 2 weeks now - looks the same as when it went in, so should be ok for a while!
Collected my Engine Harness last week part of it is shown here
it is now fitted to the engine and the plug to the chassis wired in with the ECU supply's and relays.
A few sensors to connect, but that will be done later. Checked most inputs & all are working ok, SO nearly ready for the mapping. I am away for a week now, so it will have to wait...
Also have made an elbow to replace the turbo, so we can do the first map N/A without having to worry about the turbo..
Collected my Engine Harness last week part of it is shown here
it is now fitted to the engine and the plug to the chassis wired in with the ECU supply's and relays.
A few sensors to connect, but that will be done later. Checked most inputs & all are working ok, SO nearly ready for the mapping. I am away for a week now, so it will have to wait...
Also have made an elbow to replace the turbo, so we can do the first map N/A without having to worry about the turbo..
Why the two boxes with the ecu ?
Not sure I'd agree with removing the turbo. Cant see that being of any real benefit for mapping, when the turbine and compressor being there, even off boost will make a huge difference to any mapping.
I'd have sooner ran the turbo with an open wastegate or something...but really I'd see no reason why not to map with the turbo in place.
Loom looks excellent quality.
Not sure I'd agree with removing the turbo. Cant see that being of any real benefit for mapping, when the turbine and compressor being there, even off boost will make a huge difference to any mapping.
I'd have sooner ran the turbo with an open wastegate or something...but really I'd see no reason why not to map with the turbo in place.
Loom looks excellent quality.
The second Box is a 4 channel EGT Amp. The AEM ECU does not have it onboard.
Loom is really good quality - pictured is the rear bank, the front bank is similar, but with a few less connectors.
There are pro's and cons with removing the turbo, but with the AEM tuning being based on VE, a good VE map is a must, hence a first map without the turbo. As I understand if the VE map on the N/A engine is good, then the ECU can do most of the correction for boost on its own, with just minor trims. We will see when we get to that point
Loom is really good quality - pictured is the rear bank, the front bank is similar, but with a few less connectors.
There are pro's and cons with removing the turbo, but with the AEM tuning being based on VE, a good VE map is a must, hence a first map without the turbo. As I understand if the VE map on the N/A engine is good, then the ECU can do most of the correction for boost on its own, with just minor trims. We will see when we get to that point
Aye - I would of thought the presence of the turbo would have an impact on the VE tables.
Although having said that, I run megasquirt which is MAP(ve) based and was originally tuned before I fitted the turbo - in the main, I just mapped out the higher areas over 100kpa, but in gradual steps - i.e. 2 psi, 4 psi, 6psi etc
I don't recall having to massively change the areas below 100kpa, perhaps just some fettling.
Although having said that, I run megasquirt which is MAP(ve) based and was originally tuned before I fitted the turbo - in the main, I just mapped out the higher areas over 100kpa, but in gradual steps - i.e. 2 psi, 4 psi, 6psi etc
I don't recall having to massively change the areas below 100kpa, perhaps just some fettling.
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