VTS with bike carb conversion, What's needed?

[Slugshead]

Ok basiclly been offered CBR 600 carbs for cheap..

I'm not looking for people to start saying that they are the wrong type of carbs, and theres no point just go for ITBs etc etc etc

Before you start saying ITB, think about the cost yeah I dont have £2000 to spend.

So here we go,

Carbs are there, with the connecting sleeves and TPS..

I would modify a standard mani, save money there again.
Fuel lines would need modifying iirc.
I know that the thottle cable will need some sort of modifcation/adaptor but that should be easily enough..

What would be needed management wise..
Is the standard ECU capable of keeping the sparking in good order?

Really, whats needed?


Cheers in advance

[Bedford126]

how do you plan on modifying the standard manifold?

And give beeniemoo a pm aswell as fishervts on here as there both sorted lads and beeniemoo built the vts engine thats in fishers vts at the mo.

But unless you know of a "friendly" mot tester there is very little chance it will ever pass on the bike carbs.

[Slugshead]

The VTS mani is a simple one to mod, cut it and samco it together..

[Bedford126]

Done that way they leak like crazy. Your better off getting a adaptor if you plan on using samco hoses to join them. You will also need a throttle cable from a diesel 106 (longer) and a cable guide to bend the cable 90 degrees at the carbs.

Also im not sure about on saxo's but on the fiesta zetec you need a lower pressure fuel pump / fuel pressure regulator. Or you can run the fuel pump from the bike that comes with a cut off when the pressure becomes too high (saves using a return)

[Slugshead]

Considering the budget so i'm not too b othered abuot how it would look...

So longer cable, ok no probs..
I've seen it beofre in a 205 on webbers that he had a switch in the ash tray for high and low fuel pressure so guessing a pump with switchable high and low.. makes sense..

[ed-bradley]

Adjustable fuel pressure regulator.

[Ryanp]

The standard inlet manifold is plastic, so you are planning on cutting it and bodging on some carbs.

Dont expect it to run very well.

You dont need 2k for bodies either, Predator ECu + proper bike bodies for well under a grand!

Id be more worried about how it performs than looks but really I wouldnt expect it to perform well at all. Its not just a simple case of bolt them on and ignore the fact you have an upset ECu etc..

[Slugshead]

I wouldnt worry about the inlet mani, that's not an issue...

Back to the above mind... Im talking about the fact that the standard ECU may be upset, hence the original questions...

[ross009]

im not sure the ecu would like having no injectors connected you would need an aftermarket ecu you can get webber alpha/dta in ignition only forms. get an r6 fuel pump it will supply the correct pressure. get bogg bros to make your manifold and jet your carbs will get you sorted much quicker.

[stevo1600]

you need to keep the original senors plugged in and atleast doing something

if you swap sensors or take them out then the ecu will spack out

a remap on bike carbs would be a decent power gain i would of thought, aldon automotive dont charge alot for a remap. so consider that.

[Ryanp]

Originally Posted by Slugshead

I wouldnt worry about the inlet mani, that's not an issue...

Back to the above mind... Im talking about the fact that the standard ECU may be upset, hence the original questions...

A poorly designed inlet system is a big issue. It will loose power rather than gain it.

Have a search on the work involved in going carbs (im sure someone posted a full list of whats involved), the ECU like when running bodies wont be reading a MAP sensor which causes issues, then you have the fact the injectors wont be firing how they do as part of the injection system you have.

All in all though its not really alot cheaper than a set of bike bodies/will be a complete arse come MOT time.

[Azza_]

Check out boggbros.co.uk, they fabricate manifolds to fit any carbs. When I called up the guy quoted £180 for a mani to fit cbr 900 carbs

[Bedford126]

boggbro's manifolds are piss poor tbh but they are pretty good for advice.

[Perilmeglio2]

I remove some dust from this discussion... I would like to fit bike carbs on my Saxo VTS 1.6 16v (as I said in my presentatio topic).
In Italy where I live (I'm from Rome) nobody fit this kind of work, so I need some information before starting the job without regrets...
First all you'll read a short description of my car to help me and to suggest me the right carbs and settings:
Model: Saxo 1.6 16V VTS - My 2001 - Ecu Euro3
Engine: Full Exhaust system with 58mm internat diameter (exhaust manifolds, decat, rally gruppo A), maximum road cams profile with hydraulic tappets (I hope it's the correct translation), 270°intake - 280°exhaust, custom remap (the remap was made for the stock intake manifold with a 54mm TB).

Right now, on Ebay I saw a complete bike carbs conversion for Saxo/106 16v made with Yamaha R6 2001 carburators (37mm each) at a very nice price (about 290£) and manifolds.
I wrote a mail to the seller that said me that he can send me a longer gas cable for 10£ and a low pressure fuel pump (the original one is born to run high pressun iniection) for 40£. In his opinion the stock ECU can run without any problem the sparks but on some UK forums I saw that people use to fit a specific ECU that run just the sparks (I guess the name is OMEN200 or something similiar).
I saw also that lots of people who fits bike carbs uses carbs bigger than R6's, for example are taken from R1, CBR900, Blackbird or other Superbikes.

Can you give me some informations about it?
1) Is the stock ECU (Euro 3 version) good to run bike carbs conversion?
2) It's bettere a low pressure fuel pump or 1 or 2 (in line) fuel pressur regulator over the Citroen stock fuel pump?
3) With my engine (actually it runs about 145hp, it's not an extreme one) do you think that R6 carbs are good or it's better something bigger? Which ones?

Thank you everybody for you kindness, forgive my awful english... :-)