I know this is a high power out put, but then so is 500+BHP for a VR6, but people are getting it. Anything is possible given enough time, money and expertise. If you read what I wrote, the car was not only mapped by them, they did the whole head complete, with toyota ITB's custom intake runners, custom exhaust manifold and system, with no cat's or ristrictions. They also helped out with the ignition and fuel management system. You need to understand, these guys build world class ralley cars, they are not some back yard mechy with a spanner. That is why I sort out their expertise. Yes I could have done the complete job myself, and probably would have achieved 150-170 bhp as VR6will got. Instead, being the perfectionist I am , I got help from a group of profesional race car builders. Yes it was expensive, but as you can see it is worth it in the end!
http://www.kodakgallery.co.uk/Photo...der=0&albumsperpage=&navfolderid=2006 http://www.kodakgallery.co.uk/Photo...der=0&albumsperpage=&navfolderid=2006 fitted to this car,
500bhp from a vr6 normally comes from a GT35 or similar, not from a nice inlet and exhaust manifold....
There are outfits in the US that have got over 200hp from the crossflow 8V - us F3 engines - http://www.bertilsengines.com/products/engines.html - so given enough knowhow its definately possible and well done to you but like you say, to do so takes the knowhow of professionals - I wanted more than 200hp from my 2L 16V and ended up working with a pro to get the 240hp I have now - you wouldn't achieve this in a shed with second hand parts The ford pinto was an 8V engine and a very old fashioned design and folks used to get 200hp out of them years ago so with a decent modern engine with electronics it would be there for the taking. I know of loads of pugeot 1900 8v's that put out 190hp+ also.
valve area on a pinto is massive tho rob 90mm bores etc i'm sure Tramp posted something years back about the natural limits of 8v vws Mind 8v heads on v8s can outflow some of the best 16v race heads out there if you read some of Vizard's stuff but they do tend to have 4" bores and valves like teacups.
arnt our VW heads also flat where the valves sit as opposed to a pent type which allows a larger valve area?
the 16V has some angle on the valves but not much - thats why the head is so narrow cf. something like a cossie head or a lotus twin cam - massively wide - and also one of the reasons why the valves are relatively small limiting ultimate power (the other being bore size) - I've had people at sprints ask me if mine is an 8V....dont look big enough to be a 16V packaging is a big deal in car design so I guess vw designed it like this to cut down on the space taken up
Thanks bro! finaly some one who sees things like I do. Like I said, the top end was built by a profesional ralley outfit! By the way to the rest of the doubters on here, call VW motorsport in milton keneyes they got of 200BHP from an 8V FACT! Bottom line if you pay peanuts you get monkeys! END oFF!
would still like to see some pics of the setup. Not cos i doubt you just for interest/future projects
100bhp/L is fine no one is arguing with that, but 130+ per L is very good going unless you have some serious revs going on what was it like to drive? and what was the peak torque?
one of dave walkers articles recently about a bog stock honda S2000 engine fitted to a Mk2 escort with a very fancy new exhaust+manifold - 260hp.....probably revved to 8.5-9K admittedly but not daft revs by any means and all this from a stock lump ! staggering 130hp/l from a well built 8v....sounds a lot admittedly but this is running race fuel and depending on what that is exactly, it can make quite a difference - 10-15% easily if the motor is setup properly to run it - more like 100hp/l on regular fuel which is doable IMO with an 8V
I can't see why people doubt these figures, sure they seem high for an 8v but we're comparing it to what we and others have achieved with our DIY builds and those done by people like Dubsport, TSR etc.. And I know of local 1600cc rally/climb professionally prepared Corsa's and 106's with 190 - 230bhp on ITB's. Look forward to seeing this progress.
