Throttle body options for 1127 retrofit?

[Zweihammer]

Well, that was anti climatic. I scored a set of TBs off a 2006 GSXR 600 and cannot, for the life of me, see how the paired castings could ever line up. 

So, apparently, I screwed up.

If anyone’s got a short list or link to TB options for adding EFI to an 1127, any pros or cons and the mods required I would be appreciative. I know the information is in here, but I thought I knew what I was looking for this last time.

GPZ1100, which years GSXR 600 or 1k, etc.

Thanks!

Cheers, Zweihammer 

[Arttu]

At first, there might be still a change to get your 2006 model TBs fit. If I recall correctly I have 2007 GSX-R600 TBs on my 1127 Slingy project. The trick to make them fit was to swap intake boots between 1&2 and 3&4. This alters spacing just enough to make them fit.

But if you have to get another TB set here are some options:

GSX-R600 2001-2003. Individual castings so it's relatively easy to adjust the spacing. 38mm bore, should fit pretty easily to intake boots.

Old Kwak GPZ1100. Spacing should be correct without modifications. 34mm bore. Outlet stubs are most likely too small for intake boots, some adapters are needed. And obviously these start to be pretty old now so condition of parts might be far from perfect...

I know that some GSX-R1000 TBs have been fitted as well but I haven't played with them personally so can't give any further details.

[Zweihammer]

Thanks, I think I am going for a set of 2001-03 set of GSXR 600. I just hate getting things twice. If I can find some way to use the later model set, I will have to put EFI on my ‘83.

Thanks!

Cheers, Zweihammer 

 

Edited November 8, 2018 by Zweihammer