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what year gsxr 750 ITB's
ryanill - 21/7/14 at 05:07 AM

hi all

currently getting all the bits together to covert frim bike carbs to bike TB's
i gather that most people use the gsxr 750 bodies as they can be split individualy to sute the ports on the head.
ill be after 2 sets of bodies
1 for a pinto and 1 for a duratec
my question is
i can find the ITB's but very few people state the internal diametor. are they all the same no mater what year. as long as they can be split individualy ?
any help would be great iv got my eyes on a set of 1998 and a set from 1999 on fleabay at the moment would there years be ok ?

ryan

Jenko - 21/7/14 at 07:33 AM

I have the 1st set from the K1 (I think), If you buy the earlier sets, they have the advantage of having only one set of butterflies, so you don't need to faf around removing and filling holes.

Click

Andybarbet - 21/7/14 at 08:43 AM

My gsxr 600's are 2001 as far as I know, all separate & re-spaceable.

ryanill - 21/7/14 at 02:31 PM

quote:
Originally posted by Jenko
I have the 1st set from the K1 (I think), If you buy the earlier sets, they have the advantage of having only one set of butterflies, so you don't need to faf around removing and filling holes.

Click



Ok thanks for this info. The ones iv seen so far have all been one butterfly so that's a good thing. Would you know if all 750 are the same size bore inside the throttle bodie ?

Have asked questions about some on ebay to a bike breakers but they don't seem willing to check anything on the throttle bodies for me. There reply was
'To much messing about for our staff' so I'm hoping some of your brain boxes on the forum can point me in the rite direction

Jenko - 21/7/14 at 02:56 PM

The later ones got bigger....BUT, not by much. 42mm rings a bell vs 40mm. I would consider that for fuel injection, the size is not that critical. Unless you are hunting 220bhp, then the 40mm - 45mm should be ok.

ryanill - 22/7/14 at 04:57 AM

quote:
Originally posted by Jenko
The later ones got bigger....BUT, not by much. 42mm rings a bell vs 40mm. I would consider that for fuel injection, the size is not that critical. Unless you are hunting 220bhp, then the 40mm - 45mm should be ok.


cheers for that info. im definatly chasing 220BHP so i think the 40's would be more than ok for what im after

davidimurray - 22/7/14 at 06:08 AM

Some good info on bhp per cyl versus tb bore pn jenveys website - http://www.jenvey.co.uk/jenvey/throttle-body-selection-with-jenvey-dynamics

ryanill - 23/7/14 at 05:04 AM

quote:
Originally posted by davidimurray
Some good info on bhp per cyl versus tb bore pn jenveys website - http://www.jenvey.co.uk/jenvey/throttle-body-selection-with-jenvey-dynamics


cheers dave ill have a read through that this afternoon