V8 in place of V6 - tight fit
Discussion
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
Roy,
did you manage to get papers on the car?
Will it be track only?
As far as your exhaust question is concerned, You could try Torino or El Camino cast manifolds but for power, make tube headers. Yes, it'll be a tight fit.
B.
Roy,
did you manage to get papers on the car?
Will it be track only?
As far as your exhaust question is concerned, You could try Torino or El Camino cast manifolds but for power, make tube headers. Yes, it'll be a tight fit.
B.
There are several M / Taimar RV8 conversions around including mine.
Engine and gearbox fit great with surprising little chassis work.
Manifolds are the problem area but you can get reasonable 4 branch manifolds without cutting the chassis.
'Maniflow' manufactured mine (and others?) - they recently confirmed the patterns / jigs still exist.
David
Engine and gearbox fit great with surprising little chassis work.
Manifolds are the problem area but you can get reasonable 4 branch manifolds without cutting the chassis.
'Maniflow' manufactured mine (and others?) - they recently confirmed the patterns / jigs still exist.
David
Slow M said:
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
Roy,
did you manage to get papers on the car?
Will it be track only?
As far as your exhaust question is concerned, You could try Torino or El Camino cast manifolds but for power, make tube headers. Yes, it'll be a tight fit.
B.
Went back to the seller and am satisfied with his story about the car, well not much choice really, either believe him or burn it and loose my outlay.Roy,
did you manage to get papers on the car?
Will it be track only?
As far as your exhaust question is concerned, You could try Torino or El Camino cast manifolds but for power, make tube headers. Yes, it'll be a tight fit.
B.
I may try for an IVA (or is it SVA) test when it's up and running and get an age related plate if that's possible, maybe not as easy these days as it used to be.
Regarding engine and exhausts, I was hoping to make my own from the stainless four branched manifolds that were on the V8, looks like I can shorten the radious on the back pots and squeeze them in, was hoping someone had done this and had some pics. Everything else done, polybushed the suspension and waiting on new brakes, hoping to have it running in a month or two if finances allow.
Waiting for a gearbox for now so as I can find out how far back in the chassis the engine sits, also a problem with the water pump pulley in relation to the cross member that braces the shock absorbers.
May have to cut something out and redesign so as the V8 will fit. Not heard of these problems on other builds in 2500/3000M chassis, so maybe it will be ok when gearbox is lined up.
Also worried that the chassis may not be up to 200lbs ft torque without strengthening.
I will troll the internet for answers.
V8S Manifolds are pretty straightforward, and there is plenty of room under the nearside of the engine for the main exhaust pipe to run rearwards.
V8S manifolds do turn up (and I think pre cat Griff Manifolds are the same) as many owners have fitted a stainless system, it could be worth a post on the S forum if you're after some.
Each manifold has a simple flange on the end so even if only the manifolds were of use (likely) it would be easy to join up to a fabricated system.
If you want any measurements let me know, there's no guarantee there's enough room for them in your car of course.
Here's an earlier pic showing the Y piece arrangement.
V8S manifolds do turn up (and I think pre cat Griff Manifolds are the same) as many owners have fitted a stainless system, it could be worth a post on the S forum if you're after some.
Each manifold has a simple flange on the end so even if only the manifolds were of use (likely) it would be easy to join up to a fabricated system.
If you want any measurements let me know, there's no guarantee there's enough room for them in your car of course.
Here's an earlier pic showing the Y piece arrangement.
Edited by Barkychoc on Wednesday 14th April 20:03
valvesetter said:
I've seen forward manifolds on race TVRs but they look complicated for me to produce, worth a look when the engine is in though. Will the exhaust maifolds go on back to front, i.e. left on right and right on left, to achieve this?
Can't see it,will be making my own out of stainless steel.Could you have ago at making your own out of mild steel?
We have 2 Taimars that were converted to V8s by the Canadian importer ( John Wadman ) for the Canadian market and both have headers on them. When we stroked my car to 347 we made a new set of headers for the car and they sat alittle too low and scraped the road at times and were getting dented. We replaced the dented sections without trying to tighten up the bend to the underside and scratched our heads to try and find another method of repair. One method we played with was to run the 4 pipes from each side into a collection box where we could then run to the muffler and then to the back of the car. The method we finally settled on was to build our headers and have the collectors before the underside of the car and just have one pipe on each side make the bend to the underside of the car. This made for a very short header unit. Now my oil pan is the lowest part of my car and I hope to never hear my car scrape bottom again as I know it will be expensive. Next winter we will hand build another set of headers for the other car and we are looking at going forward with the pipes like on the Griffs(like pics above.) If you want any pics of our handmade headers send me an e-mail and I will get the car on the hoist for pics. It was very time consuming to run our exhaust that way but very satisfying in the end.
Edited by V8TVR1978 on Wednesday 14th April 20:41
Slow M said:
What V8?
B
3.5 Rover from late SD1 with gearbox from same car.B
Those exhaust ports in the pictures are about 4 inches higher up than mine are. They are above the chassis rail wheras mine are below the chassis rail. there is plenty of room for the front three pots but the back ones are restricted by the lower (top) rail. I was going to try getting the engine down a little more to clear it but the ground clearance would be down to about three inches and I would need a sump gaurd which would lower it even further.
Maybe with the gearbox fitted I will be able to judge better.
I can weld stainless but am useless at measuring so I do everything by eye. It could turn out into a right dogs breakfast.
valvesetter said:
Slow M said:
What V8?
B
3.5 Rover from late SD1 with gearbox from same car.B
Those exhaust ports in the pictures are about 4 inches higher up than mine are. They are above the chassis rail wheras mine are below the chassis rail. there is plenty of room for the front three pots but the back ones are restricted by the lower (top) rail. I was going to try getting the engine down a little more to clear it but the ground clearance would be down to about three inches and I would need a sump gaurd which would lower it even further.
Maybe with the gearbox fitted I will be able to judge better.
I can weld stainless but am useless at measuring so I do everything by eye. It could turn out into a right dogs breakfast.
My manifold (per side) has 4 short legs into a collector and a single pipes wrapping under the starter etc and a balance pipe towards the rear of the g'box. They are low but not as low as the sump. (use the RR sump which is higher than most SD1s - but holds more oil)
The manifold is probably fairly easy to make as no complex bends etc.
David
Edited by djc100 on Wednesday 14th April 22:22
djc100 said:
The RV8 sits low and quite far back in the M chassis, great for weight distribution and handling but does make the rear port a problem. (lines up with the upper chasssis rail)
My manifold (per side) has 4 short legs into a collector and a single pipes wrapping under the starter etc and a balance pipe towards the rear of the g'box. They are low but not as low as the sump. (use the RR sump which is higher than most SD1s - but holds more oil)
The manifold is probably fairly easy to make as no complex bends etc.
David
Thanks , I might consider moving the engine forward a couple of inches if that would help the problem, depends on the prop length and if the oil filter will clear.My manifold (per side) has 4 short legs into a collector and a single pipes wrapping under the starter etc and a balance pipe towards the rear of the g'box. They are low but not as low as the sump. (use the RR sump which is higher than most SD1s - but holds more oil)
The manifold is probably fairly easy to make as no complex bends etc.
David
That or lower the engine a bit, must be a way round it with a bit if shuffling and I have the benefit of placing the engine wherever is best for it as everything else will be fitted according to the final engine position.
I supose the starter will be a problem if I lower the engine. Any how, I am going to do it as I have all the bits coming together and I like a challenge.
I'll cut and shut the stainless pipes that came with the engine for now and consider a propper system next year, should be able to make a decent looking if not efficient exhaust for now.
stainless_steve said:
GTRene said:
nice projects, I like classic TVR's with V8.
What is the difference in size and weight compared to say a 5.0 rover and a LS3...
Both ally so can't be alot in it,5.0 rover in a TVR puts out about 280 true horses,LS3 in same around 400/450.What is the difference in size and weight compared to say a 5.0 rover and a LS3...
The engine and gearbox positions have not been finalised but at the moment it is resting with the front bit of the sump on the bottom crossmember and the back bit of the sump a few inches lower than that. I think the botom crossmember might be the deciding factor on height as I dont want to be chopping the chassis if I can help it.
I've seen also some TVR 3000M with V8 for sale on PH a while ago..
here is such car with a US engine Ford 302
http://www.britishv8.org/Other/MikeBudde.htm
and here a 2500M with such engine
http://www.britishv8.org/Other/MartynHarvey4.htm
here some M series V8 conversion notes, I believe in part 2 he spoke about your question?
http://tvr.m-fix.co.uk/enginev8conv.htm
http://tvr.m-fix.co.uk/
here is such car with a US engine Ford 302
http://www.britishv8.org/Other/MikeBudde.htm
and here a 2500M with such engine
http://www.britishv8.org/Other/MartynHarvey4.htm
here some M series V8 conversion notes, I believe in part 2 he spoke about your question?
http://tvr.m-fix.co.uk/enginev8conv.htm
http://tvr.m-fix.co.uk/
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