• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

CARB SWAP FOR GS1000

  • Thread starter Thread starter KIWI GS1000L
  • Start date Start date
K

KIWI GS1000L

Guest
Hi guy's can any help with swaping the vm mikuni's for bs34's or I was thinking about early GSXR 750 flat slides as I can get the GSXR carbs as cheap as bs 34's.I know I will need new manifolds but which one's,I do have a set of GS1100 ones but port size is huge and the bolt holes don't line up.
Cheers Tony :?
 
Hi Terry I do have an GS1100 G head but I thought I would lose to much compression,I will use it as last resort as it needs a lot of work.What about 850 manifolds,I think they have 34's not sure if there ports are smaller.
Cheers Tony
 
The 1100g head has a different part number than the 80-81 1000 head. The only way to be sure about compression loss would be to measure the combustion chambers to see if they are different. You could install a wiseco 1085 kit while you have the bike apart. That would compensate for increased combustion chamber size.
The manifolds also have different part #s for the 850 & 1100. The 850 uses 32mm carbs, the 1000/1100 34mm.


Terry
 
It is possible to mount them BUT it would require custom made adapters
Nothing over the counter so to speak The head ports are so small you are just beating your head against the wall
 
Maybe someone running 33 smoothbores on a small port head (78-79) can answer this. I have a set in my garage that I used on my 79 L-model head with 33's but they have fogger nozzle holes drilled in them.
The part number on the intake boot is 16065-1036
Bolt pattern is small like the small port 1000
Inlet size is way bigger than the stocker
Also appears to not use an "O" ring for a seal to the head
I possibly purchased them from MTC 20 years ago along with a brand new set of 33 smoothies
 
Thank's for all your replie's guy's,Hey Bad Billy B is your motor stock,did the 33's make much of a differance in power.
I have also got a set of BS32's and manifolds from a GSX750 coming this week ,brought for spare's for my 550L, won't know if they would fit until I see them,I know when I raced speedway ,that you can bore out standard 1000 VM's out to 30-31 mm and turn into a cheap smooth bore, I have to investagate some more.
Cheers Tony
 
The '78/'79 1000 runs very good with Mikuni 29 smoothbores, especially with 1085 kit, K&N's, quality pipe, mild cam, Dyna ignition.
Plenty of power and will run a long time.
I also suggest welding the crank and clutch basket.
 
You must log in or register to reply here.
Back
Top