Where can i get a manifold to fit twin 40 webers to my 16V?

[wcrado 0]

Just bought some twin DCOE 40's, need some info for the best place to pick up a manifold to fit my 1.8 16v. Can anyone help?

[corradophil 3]

Demon Tweaks?

[rmn 0]

big boys toys, lots of those sort of places, they can be not too good a fit too

[h100vw 0]

>

 

Kjet can produce the same power and will be free seeing as it's already fitted.

 

Carbs are, in my opinion, a step backwards. If they were any good, then every team in formula one would be using them. As far as I am aware, none do.

 

VW will have spent ages getting the Kjet set up just right. Admittedly, it can be improved on. You can find loads using the search. Certainly a lot cheaper than carbs.

 

Getting the manifold is just the start, you need to drop the fuel pressure significantly. Carb icing is likely through winter. Poor comsumption is another by product of fitting them.

 

If you like the noise, record one and play it on your stereo. :mrgreen:

 

>

 

Gavin

[corradophil 3]

If you like the noise, record one and play it on your stereo

 

Or drill the lower part of the airbox. Have to admit I would stick with K-Jet too. People on Club gti have been known to get 200bhp with loads of other mods but still using K-jet.

[Claret Badger 0]

twin 40's very jooocy - throttle bodies would be better - and if you ;pair them with a decent Emerald Managemt system very tweakable.

but cost a whole lot more

 

But if you must you must -

 

where to source?

google - weber manifolds+VW

or

erm try eBay -

 

good luck

[wcrado 0]

>

 

Kjet can produce the same power and will be free seeing as it's already fitted.

 

Carbs are, in my opinion, a step backwards. If they were any good, then every team in formula one would be using them. As far as I am aware, none do.

 

VW will have spent ages getting the Kjet set up just right. Admittedly, it can be improved on. You can find loads using the search. Certainly a lot cheaper than carbs.

 

Getting the manifold is just the start, you need to drop the fuel pressure significantly. Carb icing is likely through winter. Poor comsumption is another by product of fitting them.

 

If you like the noise, record one and play it on your stereo. :mrgreen:

 

>

 

Gavin

Sensible mode? who cares about that! i don't think anybody who wants to wring every avaliable bhp from their engine cares about how sensible the idea is! i'm keeping the standard k-jet system, so no need for all you die-hards to wet your pants, if it doesn't work out i'll sell them on and no damage. i'll do most of the work myself(along with help from a specialist mate) so it won't cost alot to fit, and the carbs cost very little as well.

I can see what you're saying, 200bhp is attainable from k-jet, but think of the money it would cost me to get there- you'd be talking at least £500 for a polished and ported head, prob around £450 for aftermarket cams, a 2.0 bottom end conversion would prob be around £400, already got the stainless 4 branch and system but with all that, i still think you'd only be looking around 180bhp and thats about as far as you can go with it. they say you can get 200bhp, but i think it's close to impossible. most people who want that kind of power go for bodies. yeah ok carbs are less technologically advanced, but k-jet is hardly trail-blazing technology is it? i wasn't sure whether to go for it i admit, but it's gonna give me a good power gain for a reasonable amount of cash. like i said if it stinks, then i'll convert back, but i've seen some big improvements from running carbs so i decided to go for it. I'd love ITB'S, but i haven't got that much cash to spend! as for the fuel consumption, i think it's pretty much a given that almost any mod you make will decrease economy. more power=more fuel and thats the way it is. if i cared about that i'd drive a diesel! we'll see how it goes anyway.

and i couldn't give a toss about the sound!

[corradophil 3]

i couldn't give a toss about the sound!

 

I think you will when you hear it! They will sound lovely.

 

A mate used to run a Mk2 Golf with a very lary 8v lump on twin 45s. It was really good fun, as I'm sure yours will be.

 

The 200 bhp valvers were as you say 2.0, running Schrick 268/276 cams and other bits on K-jet.

 

K-jet is a good system, and i'd stick with it personaly, but I can certainly see why you fancy the carbs. Keep us posted on your progress.

[flusted 0]

1 tune up at stealth costs approx £50 so hows k-jet tuning expensive? This would give you approx 155bhp on a standard 1.8 16v on k-jet.

i think "more power=more fuel" doesnt work with carbs,its just more fuel and hot air

Carbs will not give a good power increase

[mistrall 0]

what about cartbs with nitrous compaired to k-jet ? or am i being silly lol

ps - mornin g - that was a big piza

[wcrado 0]

1 tune up at stealth costs approx £50 so hows k-jet tuning expensive? This would give you approx 155bhp on a standard 1.8 16v on k-jet.

i think "more power=more fuel" doesnt work with carbs,its just more fuel and hot air

Carbs will not give a good power increase

pardon? how do you expect to extract 155bhp out of a standard 1.8 16v? i've had my car rolling road tuned, all they can do is swing the distributor to advance the timing and richen/lean the mixture. where you think they will get almost another 20bhp is anyones guess.

When i said it's expensive to tune k-jet, i didn't mean rolling road tune it, i meant modify it.

yes it's more expensive to adjust carbs other than k-jet, but k-jet isn't a performance part that is going to give me any extra power, it's just a standard fuelling system which has the potential to sucessfully run upto 200bhp provided i have thousands of pounds to spend on engine mods. which i don't.

Twin 40's will give me more power and thats a fact. i've tried tuning k-jet, i've had a ported/polished head fitted, flowed manifolds, 4-branch and system, fitted new injectors, rolling road tuned and all i've got is a lot of noise and a hell of a lot of revving without actually gaining any noticible power. i had to get up to 5000 rpm before it even moved. it sucked, and so did my fuel consumption.

if you honestly think i won't gain any power from deleting k-jet and adding twin 40's then you're wrong. if you think i'll be sucking in alot of hot air and using more fuel then how are throttle bodies any different? it's basically the same idea, 1 butterfly per cylinder, but using a stand alone fuel management system.

i've spoken to specialists about this, and i've been told if i drive it sensibly, it'll probably be more economical than k-jet. but that isn't gonna happen!

I'm getting annoyed with everyone telling me to stick with k-jet cos it's good for big power, sure, if i've got plenty of money to spend on other mods. everyone keeps dissmissing the carbs and then bigging up throttle bodies! it's almost the same principle, except more expensive! they both put more air into the engine and the fuelling is adjusted to match, either digitally mapped on ITB's or manually on carbs.

if i won't gain anything from twin carbs then throttle bodies won't do anything either, and we all know they do.

I'll get it dyno'ed when it's fitted.

I'm a disgrace to the vw scene putting such primitive parts on my rado.

twin carbs belong to the Ford crew!

[wcrado 0]

i couldn't give a toss about the sound!

 

I think you will when you hear it! They will sound lovely.

 

A mate used to run a Mk2 Golf with a very lary 8v lump on twin 45s. It was really good fun, as I'm sure yours will be.

 

The 200 bhp valvers were as you say 2.0, running Schrick 268/276 cams and other bits on K-jet.

 

K-jet is a good system, and i'd stick with it personaly, but I can certainly see why you fancy the carbs. Keep us posted on your progress.

Thanks for the support phil, i will keep my progress posted.

Everyone seems to be sticking their opinion in, but not one of them so far seems to have any experience with twin carbs!

watch this space

[Supercharged 2]

where you think they will get almost another 20bhp is anyones guess.

 

Stealth, drill a hole to reveal a screw to adjust the warm up regulator, this stops the car running lean high up in the rev range, the WUR mod is the best thing you can do to a Mk2 16V GTi!

[flusted 0]

I got 162bhp from a 1.8 16v with just a 4 branch and a different inlet cam.

Theres a chap on gti forum running itbs and a chap with the same spec engine running k-jet,the itb motor makes 199bhp,the k-jet 202bhp!!!!!!!!!!!!!!!!

 

I know your trying to squeeze more power out but im just saying that the time and money would be better spent elsewhere where it counts.

a common fraze is "carbs have a serious injection problem,they dont have it!"

[wcrado 0]

I got 162bhp from a 1.8 16v with just a 4 branch and a different inlet cam.

Theres a chap on gti forum running itbs and a chap with the same spec engine running k-jet,the itb motor makes 199bhp,the k-jet 202bhp!!!!!!!!!!!!!!!!

 

I know your trying to squeeze more power out but im just saying that the time and money would be better spent elsewhere where it counts.

a common fraze is "carbs have a serious injection problem,they dont have it!"

Nice! i'm gonna give it a go anyway, cos i've already got my hands on the carbs. the only reason i'm going through with this is because i picked up the carbs very cheap and i can do alot of the work myself. but if i think it's not worth it i'll revert back to my polished inlet and metering head! it's only a bit of fun, so i'll just see how it goes. FLUSTED have you carried out this WUR mod? would like a bit more info on this for future reference. i'm sure i could do it myself if someone can provide a diagram or a detailted description....

[Kevin Bacon 5]

155 is attainable from a 16V, but not standard. My old MK2 made 154bhp and 136lb/ft with 2 exhaust cams and the WUR mod and a SuperSprint exhaust, and then it was turbo'd :-)

 

I'm sure I read somewhere (on here I think) that yonks ago VW Motorsport played around with a special manifold and twin carbs on the 16V and got brilliant results.

 

I remember back in the day, Bill Brockbank (now Badger5.net or something) played around with slide throttles etc and got 200hp from an 1800, he is the mega guru on carbs and the valver.

 

I can see why you're getting frustrated by people saying stick with K jet but don't take it so personally. K jet is only good for about 180ish bhp, but if you use K Jet with Porsche 944 injectors and the wur mod, you can easily get loads of power with the right cams.

 

I've buggered about with 16Vs for years with all manner of setups but I found a turbo to give the best results, but carbs can give good results too if they're setup right. They do go out of tune quite easily though (and that's a fact), but if you enjoy a tinker, then it's no biggy.

[Riley 0]

They do go out of tune quite easily though (and that's a fact), but if you enjoy a tinker, then it's no biggy.

 

not unless someones hiding under your bonnet and twiddling your nobs :lol: or the linkages/spindles are worn.

 

my 2p...

 

m8 if you have an 1800 16v rado,you need to carry out what i would have loved to have done! :D ended up with the g instead though :roll:

 

you have the perfect oppurtunity to throw a 9a 2.0 16v lump in(straight swap),and run without a cat!,no mot probs,no power loss.

 

use the kr cams and then throw the carbs on! :D

 

the most important thing is to be sure that the carbs arent tired,maybe a rebuild would be a good idea first,and then take them to be set up by someone who knows what they are doing.

 

ps:theres a manifold on ebay i think...

[h100vw 0]

'Everyone seems to be sticking their opinion in, but not one of them so far seems to have any experience with twin carbs!'

 

I have experience of carbs and apologise for trying to save you time and money.

:roll:

[wcrado 0]

ok sorry there h100vw, didn't mean it personally. but i have said over and over that this shouldn't cost me alot. i've picked up the carbs for next to nothing and have a specialist to help me with most of the work. plus if it all goes tits up i'll put the k-jet system back on and sell the carbs on. its not a big deal, i'm just having a bit of fun with it. RILEY nice idea about the 2.0 litre transplant, and i did look into it, as i've just had to put a replacement engine in anyway due to my old one packing up, but it just didn't seem worthwile in the end to go ahead with it. i found a 2.0 16v ABF lump at a local scrappy's, and they wanted £250 plus vat. seemed ok, but obviously i would have needed all the wiring and ECU etc and they wanted another £100 plus vat for that. was still going to go ahead with it, but the scrappy's insisted i had to take the engine out in their filthy scrapyard, they wouldn't move the car for me or anything, so i would have had to pull it out of a stack somehow and do it amongst a whole heap of scrap metal. when i found another 1.8 lump for £120, 90k miles, already out of the car, i went for that instead.

if anyone is after an ABF lump i can tell you where it is, but i'm warning you the scrappies there are the most difficult w**kers you will ever come across.

there's also a private 2.0 16v breaking near me as well, not sure of the engine code though

[Riley 0]

iirc the abf was the lump used by vw motorsport in there rally cars.

 

and also iirc it produced over 240?bhp? and had t-bodies,running 8 injectors rings a bell too? 8)

[wcrado 0]

maybe it was, i don't know. but the ABF lump was a 2.0 16v which was fitted to mk3 valvers and produced 150bhp, as opposed to the 2.0 16v 9a engine which was only 136 (ish) bhp. think it was different cams or something i don't know. if anyone wants it though i'm happy to give you the number of the scrappy

[Riley 0]

correct,the abf is a tall block too,16mm taller.

 

are you in cornwall m8? shame if you are,ive got a 9a sat around which id have got rid of for an abf...

[wcrado 0]

yeah deepest darkest cornwall!