twin webbers,

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

 

cross flow is the way forward,


oakgreen88 i think has a xflow project on the go,


tim

 

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

 

sorry, are you sure that is the right web address?

 

this be thar one:

http://www.webcon.co.uk/

 

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

 

sound advice!

 

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

 

I didnt experience any problems as i wasnt stupid enough to fit them in the first place

 

as long as you heat wrap your manifold and make heatshield for under the carbs you wont have any heat problems.

 

Still would spend the monet on cam etc

 

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.

 

Cracking answer.

 

I'd only fit x-flow if you could make it carry on using the original injection system.

 

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

 

ok will probably not bother then thanks for all the info tho.

 

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.

 

yuo coudl tune k-jet on a std engine to be just as quick as cabrs on a std engine.

 

Maybe. Probably. Possibly. I don't know - I haven't done back to back
tests.