V8 in place of V6 - tight fit

V8 in place of V6 - tight fit

Author
Discussion

Slow M

2,740 posts

207 months

valvesetter

Original Poster:

32 posts

192 months

Friday 16th April 2010
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Slow M said:
OOOh luverly, if only I could afford that lot.
I have stainless tubular manifolds going into a collect piece and a full stainless Rover system from there on so was hoping to modify what I have by cutting and welding. Looking at where my engine will sit,the only problem will be the two rearmost ports and that may not be a problem. I'll have to wait untill the gearbox arrives and then I can dry fit everything to the chassis. Lucky I have a bare chassis which will make things easier. Looking forward to working on the first problem rolleyes

valvesetter

Original Poster:

32 posts

192 months

Saturday 1st May 2010
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Getting on with it now but would like to know the size of the grease nipples on the rear driveshaft universal joints please. Mine are blocked and no grease getting into joints.
Best to buy new ones I think so if any one can help with the size and thread size I would be gratefull.

btw it's a Taimar

Thanks.

Edited by valvesetter on Saturday 1st May 20:19

Electron

605 posts

220 months

Sunday 2nd May 2010
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I have a 302 engined 3000M built by a well known UK TVR specialist who doesn't contribute to this forum.

The car has been "built" for several years and run in several versions mainly for sprinting but was run on the road for a while in an attempt to get reliability. It has continually overheated and been unreliable.

On dismantling the top end I exposed the exhaust manifolds ...



Look closely and you will see the rear manifold has been dented to clear the chassis. The engine ran but developed a localised hot spot. This in turn led to the nearside head cracking between the exhaust port and the water jacket. Pressure testing in the car didn't initially reveal the cracks .. stripping the heads off did.

As the car now has an alloy radiator, light weight electric water pump and alloy heads I intend to bring the engine 1" further forward and remove the dent ..... sounds simple but I don't have the time just yet to dismantle everything so the job will have to wait a year .....

She will also have the rear end Adrian built up for me along with the correctly set up diff, anti roll bars (front and rear) ....








heightswitch

6,319 posts

251 months

Sunday 2nd May 2010
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Don't forget the good old Boat anchor is considerably narrower than a Rover V8 across the top / head area. I would fit a SBF everytime.

N.

stainless_steve

6,032 posts

259 months

Sunday 2nd May 2010
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Electron,instead of moving the engine can't you move the rear pipe up and forward,instead of down and forward?
Looks like there would be plenty of room then

Slow M

2,740 posts

207 months

Monday 3rd May 2010
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Electron said:
I have a 302 engined 3000M built by a well known UK TVR specialist who doesn't contribute to this forum.
...
On dismantling the top end I exposed the exhaust manifolds ...
What was obscuring this?
Electron said:
Look closely and you will see the rear manifold has been dented to clear the chassis. The engine ran but developed a localised hot spot. This in turn led to the nearside head cracking between the exhaust port and the water jacket. Pressure testing in the car didn't initially reveal the cracks .. stripping the heads off did.

As the car now has an alloy radiator, light weight electric water pump and alloy heads I intend to bring the engine 1" further forward and remove the dent ..... sounds simple but I don't have the time just yet to dismantle everything so the job will have to wait a year .....
1.)Before you do anything else, ensure that the flange location on the new heads is the same as it was when you took that picture. Aluminium aftermarket heads often revise port shapes and, therefore, bolt-up changes relative to the original location.
2.)Consider Stainless_Steve's recommendation.
3.)You may want to have a look at turning that one pipe down more rapidly (and leave the engine where it is)

B

Barkychoc

7,848 posts

205 months

Thursday 20th May 2010
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Roy I know where there's an old set of TVR V8S Rover V8 manifolds (that sweep forwards) going if you're interested.
Your profile doesn't allow emails.

valvesetter

Original Poster:

32 posts

192 months

Sunday 23rd May 2010
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Just taken delivery of my gearbox, it's a rover SD1 Vitess box in excellent order complete with flywheel and clutch. Problem is that it is only 27 inches long and if I use the prop that I have then the back of the engine will be up against the top crossmember on the chassis and also it wont drop in between the rails. I'll have to move the engine forward and alter the prop or try and get the engine lower in the chassis to clear the top rails.
Back to the drawing board.

jellison

12,803 posts

278 months

Tuesday 25th May 2010
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heightswitch said:
Don't forget the good old Boat anchor is considerably narrower than a Rover V8 across the top / head area. I would fit a SBF everytime.

N.
Cool - I'll do that wink

Barkychoc

7,848 posts

205 months

Tuesday 25th May 2010
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valvesetter said:
Just taken delivery of my gearbox, it's a rover SD1 Vitess box in excellent order complete with flywheel and clutch. Problem is that it is only 27 inches long and if I use the prop that I have then the back of the engine will be up against the top crossmember on the chassis and also it wont drop in between the rails. I'll have to move the engine forward and alter the prop or try and get the engine lower in the chassis to clear the top rails.
Back to the drawing board.
The V8S prop is telescopic - it looks suspiciously similar to a Range / Land Rover front prop but thats a guess - but it does mean if you used something similar you'd have no issues getting a prop sorted to the exact length.

It has a flange each end with a telescopic bit near the gearbox - presumably to allow for axle articulation on the RR.

Edited by Barkychoc on Tuesday 25th May 12:44

jellison

12,803 posts

278 months

Tuesday 25th May 2010
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you have to shorten the prop to put the engine as far back as you can get it. Not be dictated on engine position by a second hand propshaft - loads of places shorten them wink

Edited by jellison on Thursday 27th May 09:39

Barkychoc

7,848 posts

205 months

Tuesday 25th May 2010
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Thinking about it on the V8S I don't actually think you would be able to get the prop out if it was fixed length - you have to retract it to remove it.

The suggestion wasn't to use a second hand prop just the principle.

There is a bracing bar across the lower part of the chassis forward of the diff flange - so the prop would not drop there - and as normal the gearbox flange is higher than the diff one so you can't drop that one first - so the sliding splined part of the prop is probably essential for removal.

tonfre

16 posts

226 months

Friday 4th June 2010
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I have an early 2500M with a Rover V8, pictures and details can be found at: http://www.ratty.homecall.co.uk/tvr-mv8-tvr-mv8-de...

Cheers,

Tony.