78 gs750 Carb spacing

[Guest]

Hi guys,

Can someone confirm for me that the carb spacing on a 78 gs750 vm26 is 77-93-77,

Looking at sourcing some early 85-86 gsxr 750 vm29ss flatslides, like these ones for my winter project,



Thanks everyone

[steve murdoch]

77-93-77 is correct.

[one_civic]

Perfect, thanks Steve

[Agemax]

the VM29's are 78-90-78 i believe. off the top of my head without going to measure them.

[one_civic]

Are you talking about vm29 smooth bores or vm29ss flat slides? As far as I've researched, the early 85-86 non US gsxr 750 mikuni vm29ss flat slides are 77-93-77? But I don't have a set yet to confirm this. Please correct me if I am wrong because that changes my plans for this winters rebuild

[Agemax]

29mm flatslides. i dug a set out and measured them again to be sure.

[one_civic]

K, thanks Agemax, you just saved me $300 that I can now put toward smooth bores

[hannibal]

Rookie question: the 77-79 750 carbs are referred to as vm 29 smoothsides?

[Agemax]

Rookie question: the 77-79 750 carbs are referred to as vm 29 smoothsides?

no, the 750 carbs are referred to as VM26's. VM29 smoothbores are a Mikuni performance upgrade carb which can be used on most 8 valve GS's , 750 upwards. 33mm smoothbores are also available for bigger capacity engines

[one_civic]

Have you used the vm29ss flat slides on anything yet Agemax? I'm gonna do an 850 top end swap this winter along with some mild head work and I have a chance on picking up a pair of these in really good shape, plus they look pretty cool

[Agemax]

Not yet! i have a set that i am rebuilding, that will be respaced to fit a 80 GS1000 head. Also they have the back plates from TM33's so they will be a genuine VM33 flatslide, instead of 29mm

[hannibal]

no, the 750 carbs are referred to as VM26's. VM29 smoothbores are a Mikuni performance upgrade carb which can be used on most 8 valve GS's , 750 upwards. 33mm smoothbores are also available for bigger capacity engines

Thanks for setting me straight!