Exaust and backpressure

[GoLfMan]

im seriously thinking about those extractors but CV Joints and wheel bearings are first. with the exaust i was thinking just leave the stock piping and put a free flowing muffler on it. would that do any good?

[Golf Loon]

The golf exhaust is so basic that it couldnt really restrict flow even stock. The worst bit is the manifold and downpipe which strangle it. Thats why everyone goes extractors in the end. FLOW = GO

[GoLfMan]

hmm sounds good. have you still got those extractors that you wanna sell? cos i want them as soon as i get the money. also that webber your seeling for the golf. the delorto can i trade you a downdraft weber double barrel 41mm for that??

[TassieGTi]

The Renault carby will make a great improvement.I have a 2 barrell manifold and an 2 into one adaptor if needed.
Better still I have a side draft dellorto and manifold.
If you use a 1600 motor don't go bigger than a 2 inch system, the original twin manifold downpipes are quite efficient and there are very small gaines by using extractors but 2 ich system and free flow muffler certainly gives a noticable improvement.

[GoLfMan]

i should take some fotos , so this adaptor can you chuck some fotos my way???.. you have twin delortoes and manifold how much do you want for them?

[Belgianwaffler]

it's not so much back pressure that is the issue but gas speed .... what size is the engine ? what RPM will it be running at, etc....

[Belgianwaffler]

Sorry had'nt notice there was a mention of 1600 carby for a 1600 to about 6500 RPM and a mild cam, rejetted carby I would'nt go over 1 3/4 inch .... if you get a single webber /dellorto & links maniflod and a MK3 exaust manifold with the downpipe (mods reqired) you should be able to get a nice strong power band.... take the intake valve to 38mm with a 3 angle job (mild street port) and it'll be even better.

[GoLfMan]

thanks mate. i shall take all these things intom consideration!!!!

[gldgti]

I know a guy that almost did up some golfs for rallying. i say almost because he got suckered into using suzuki's instaed - go figure... anyways

he had a 1600 bored to 1800 with delorto carbie on it, some fancy camwork and a stainless 2.25" system to go with it, and reckoned it was good for 200hp.

anyway, what i was getting to was...you dont need a massive system for power - like everyone is sayin... im jealous too - the day i have a spare golf i can race i'll be

[GoLfMan]

I know a guy that almost did up some golfs for rallying. i say almost because he got suckered into using suzuki's instaed - go figure... anyways

he had a 1600 bored to 1800 with delorto carbie on it, some fancy camwork and a stainless 2.25" system to go with it, and reckoned it was good for 200hp.

anyway, what i was getting to was...you dont need a massive system for power - like everyone is sayin... im jealous too - the day i have a spare golf i can race i'll be

well i got 2 golfs goin atm... racing one ooo yehhh.. yeh im getting the delortoe coming... i sent off money... now its the waiting game lol can wait to get my hands on em... then a nice hot cam and the exaust sounds great... a simple yet effective race car :twisted: