Do I bike Carb?

MrP · Post by **MrP** » Wed Jul 15, 2009 9:56 am

I'm halfway into doint my 16v KR conversion and I went to see a old mate last night who i've not seen for over a year.. He showed me his ABF'd Jetta on bike carbs! Wow is all I can say!

I've been looking into the expenses of this and well, it actually turns out cheaper to use bike carbs then the injection system (for the parts anyway!)

They look cool in the engine bay, they sound the nuts and the extra BHP is always good.. But i've heard problems about getting them set up and the constant fiddling, also the poor MPG.. Now are these just myths because of people not getting them set up properly. A few people who have had them set-up are claiming 25-30mpg which won't be too far off a proberly set up 16v.

Also my views are that the k-jet inj system is pants anyway, loads of little vacuum things to go wrong and lots of little electrical niggles can cause similar problems with poor running. Same kind of issues as bike carbs i think?

What are peoples views and experiences on bike carbs?

eamon1.3 · Post by **eamon1.3** » Wed Jul 15, 2009 10:29 am

I dont know much about setting them up, or economy, anything important really, but for the sound alone they are worth it

MrP · Post by **MrP** » Wed Jul 15, 2009 11:13 am

eamon1.3 wrote:I dont know much about setting them up, or economy, anything important really, but for the sound alone they are worth it

Yeah, thats what everyone says! Setting up i'll get it done properly for what it'll cost! Installation should be easy as it's mainly improvising to get them to fit.

Post by **filmidget** » Wed Jul 15, 2009 11:50 am

I have a similar dilema for my caged track-orientated 16v Rocco. Like yours mine already has an alloy tank in the spare wheel well too, although mine is already plumbed and wired for carbs (originally being K-jet though).

Would you stick with the 16v ignition, or go programmable?

MrP · Post by **MrP** » Wed Jul 15, 2009 12:01 pm

filmidget wrote:I have a similar dilema for my caged track-orientated 16v Rocco. Like yours mine already has an alloy tank in the spare wheel well too, although mine is already plumbed and wired for carbs (originally being K-jet though).

Would you stick with the 16v ignition, or go programmable?

Stick with 16v ignition, for the time being (damn student budget

)

The plan was to use bike carbs with the bike fuel pump (keeping the original in-tank). That way I don't have the trouble of messing with fuel pressure or a regulator. (or the higher cost)

This will be done on a poor student budget so will hopefully be able to buy all the related parts with the money I get selling the K-jet fueling things.

People have easily achieved 170-180 bhp (and more importantly) 160 FtLb using a 2.0 bottom end using bike carbs/pump and KR ignition. I think that's more than enough to kill myeslf

What's the advantage on using a programmable ignition?

Nate · Post by **Nate** » Wed Jul 15, 2009 12:08 pm

MrP wrote: What's the advantage on using a programmable ignition?

umm, it's programmable

gives you more available tweakery. setting up quad carbs properly is quite a skill. it'd be quite easy to speedboat it up

MrP · Post by **MrP** » Wed Jul 15, 2009 12:51 pm

Nate wrote:
MrP wrote: What's the advantage on using a programmable ignition?
umm, it's programmable

gives you more available tweakery. setting up quad carbs properly is quite a skill. it'd be quite easy to speedboat it up

Where can i get programmable ignition set ups?

Nate · Post by **Nate** » Wed Jul 15, 2009 1:14 pm

http://www.siliconchip.com.au/cms/A_108 ... ticle.html

Niall · Post by **Niall** » Sat Jul 18, 2009 12:27 pm

MrP wrote:
They look cool in the engine bay,

Does any body have any photos? I'm quite interested by this concept

MrP · Post by **MrP** » Sat Jul 18, 2009 1:15 pm

Messy bay, but you get the idea,

Chaps · Post by **Chaps** » Fri Jul 24, 2009 2:12 pm

MrP - are you a poor student by any chance?? lol..
I looked into this, they have good gains, and sound superb (like all carbs)! plus think of all that RAM AIR with them being at the front of the engine

Get a decent company to set them up, with the correct jets and you'll be fine. Bogg Brothers are the guys to speak to about bike carb conversions, they will give you a good starting point for Jetting, and can supply you a manifold if you have enough cash ~ £250 i think they wanted when i asked but the waiting list was about 10weeks.... When i jetted mine for a 2.0l 8v vauxhall, they recommended starting with 165 main jets (sourced from ebay for £5). If you go for R1 carbs (40mm ports) i can give you a handy guide how to jet & service them yourself. Never got them fitted in the end, as sold the project b4 i got it running, so wouldnt know about MPGs... guessing 25-30 will be possible tho. Get a FPR, then you can use all of the standard pumps in your car... thats what i'd do anyway.
Hope this helps.

Rocco-Matt · Post by **Rocco-Matt** » Sat Aug 08, 2009 12:15 am

MUHAHAHAHAHAHAHAHA

Look what im doing at the moment...

I was gunna do a thread of the build once its running after the weekend,, but ive just started making the manifolds for the conversion.

£110 for the manifold which is very good compared to the 200 that bogbros what for there one, PM if your interested.

Cheers Matt

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