1600 with bike carbs?

I'm after some info on fitting bike carbs to a Mk2 1600. Apart from fabricating an inlet mani, what other work will I be looking at?

Carbs are a fairly new thing to me so any help will be appreciated. Also what mpg would you expect to get with the said setup?

Cheers

 

Click me same principle

 

Sweet. Nice one Jolfa, I'll take a look!

 

i want to do this too!

any idea of getting an inlet manifold?

or you going to make one?

cheers sam

 

dont bother calling bogg bros, you could try dubfab but they aint cheap or pretty, and no one seems to have an power figures for one of there setups.

 

why? be much cheaper and easier to get it on dig injection

 

Once I buy a quality metal blade for my snip off saw (about 80quid) Ill finish off my 8v bike carb inlet mani, its going to be made of mild steel, 6mm machined base plate which matches the ports very well, then 2mm walled tubing that goes from 30x35mm(match the inlet plate) up to 40mm. My first one will be spaced to match R1 carbs which have different spacing between each carb, I have no idea about any other bike carbs. I know boggsbros and dubfab both used aluminum but mild steel will be fine. If anyone wants one of these they will be less than a third of the price of dubfabs I recon, but keep in mind they wont look half as nice as others, and im not really going to make anything from it as I have to pay to have the plate machined and pay for the pipe to be made up.

 

how much will they be, roughly as i dont know how much dubfab ones are?

cheers sam

 

Around 100quid, but I will have to work everything out as it might cost more, you will need different bolts which I will try and sort cheap and ideally a heat shield. I know it isnt exactly cheap still but the cost of machine work and pipe stretching is most of it, dubfab are 350quid! but they are a nice bit of kit and mine really wont look half as nice.

Edit: going to do a quick pic on CAD, I have no CAD skills so it will look like a two yr old drew it but it will show you the scale and angles of the pipes.

 

oki doki well keep me in the know

depends if i keep my 1.6 8v engine in or swap it for a mk3 2.0 8v

hmmm

 

think the head spacing on the inlet is the same on the mk3 8v engine, the best 8v head for a bike carb conversion is the crossflow head and comes on some mk4s and beetles but the last one I saw sold for over 150quid!

 

be careful usind a mk3 head as the ports are a different shape on them, and they would be difficult to convert for carbs

 

nick i have a drawing of the what my ally one was made from if it will be any use.

 

oh no i'm either going to bike carb the 1600

or

scrap the 1600 and put in a 2.0 and leave it as it is

 

Yea all idea welcome, i did one CAD drawing before but the pipe shop couldnt do the pipe how I wanted it so I need to start again. Im sure Tristan did quite alot of research into manifold lengths and angle of the carbs not sure if he ever got a 8v running on them, but im using some info I found from him, setting the carbs up will be such a b*tch on a 8v, was considering getting my spare 8v engine running out of the bay in a engine cradle.

 

It maybe worth modding a dcoe carb manifold by cutting off the flanges and adapting to suit the bike carbs, then porting to size.

 

it's a 1600 and he's worried about MPG, surely anthing carb related would be a huge waste of time and money?

if it's just a bit more go and a more modern fuelling setup he's after then andy947 managed to fit all the gti injection etc to a 1600 and it ran great, bet you could do it all mega cheap

 

Would a k-jet injection be able to work then? Would it not over fuel?

 

Andy used digi injection from an 8v gti

 

Hmm, unfortunately I only have access to either bike carbs or a k-jet system off my old valver. I’m not spending any more money on fuelling systems, regardless of how cheap I can get them! So which one would be the best bet – carbs or k-jet?

Prof - have you got a link to the project you're talking about please?