thinking about a twin webber conversion on 1990 8v (digi) what sort of gains could i expect? can you get a kit with a manifold wich comes over the top of the engine with the carb inlets facing forwards on the front? how much is it all likely to cost and any places any1 can recomend to buy from? thanks
for a pair of carbs (+filters, linkage and manifold) your looking at the nice side of 300 (second hand) or the carbs brand new from webers (dcoe 40/45/50) are around 450 each from www.webcom.com
You proberly wont gain anything fittin these as they just guzzle in hot air from zorst manifold.Spend ya money on a 2l bottom end,cam and headwork
Flusted and mk286GTI - just out of interest, what problems did you experience when you were running twin sidedrafts on an 8v counterflow engine? Edited by: greg s
as long as you heat wrap your manifold and make heatshield for under the carbs you wont have any heat problems.
ive already got cam and ive just recieved my head back from the engineers, (polished & ported) so thought i'd add carbs, the heat was a problem i thought of thats i asked wether you can get a inlet manifold that comes up over the top of the engine?!!?
To say you "probably won't gain anything" from carbs is just wrong. I know of a mk1 1800 8v running a genuine 210bhp on Weber 45s (high compression, slight overbore, race cam, race head, etc). Try that with K- Jet! On the right engine, with the right setup, they will work. It'll take time to get the setup running at its best but they can definitely offer an advantage over injection setups.
but thats not what he asked, he asked whether fitting carbs will make difference, well on their own, probably not, only difference you'de see is abit more noise and maybe a touch more response and deffinitly less mpg
Seems to me you're just guessing. I'll happily admit I haven't fitted carbs to a counterflow 8v (mine are on a crossflow 16v). However, I know of people who have and I know the results they've got. OK, it's an extreme example so it may not be useful in this case but I don't think your complete dismissal of carbs is very useful either.