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77mm pistons with 18mm pin?

  • Thread starter Thread starter gearhead13
  • Start date Start date
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gearhead13

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Does anyone make 77mm pistons for 18mm pins to use an 1150 block on an 1100?
Or, could I use 78mm pistons in an 1150 block?
 
Last edited:
Or you could talk to RapidRay. He can get CP to make any configuration you want.
 
Not that pricey for what you get & you can't go to 78mm on an 1150 block without re-sleeving. Also, if you put an MTC piston next to a CP, you wouldn't even have to think about which one is the better piece. The MTCs are dinosaurs compared to the CPs & the CPs will be lighter, stronger, & make more power. PERIOD!!! Ray.
 
Someone at oldskoolsuzuki.info is using stock 2008 Hayabusa 81mm pistons on his big bore. Had to deck the block 2mm due to the difference in compression height. The wristpin is 18mm.
 
You want a 1230 kit too? Do you have an 1150 cylinder?
Try to find an 1150 crank. Wiseco still makes this kit but I bet not for too much longer. MTC discontinued theirs.
 
The MTC catalog still shows a 77mm kit for 1100's (18mm pin). Seems like a good way to go as long as they are available.
But where can you order them online?
 
As probably the only company in the industry that is master distributor for all of the piston companies, including CP ( There are only 8 of us in the USA), and MTC, I can tell you that both are excellent pistons. Both made different ways, CP being the latest state of the art, with the trick forgings, etc, but MTC pistons run tight bores and the leakdown is zero.

In an old school GS 10 to 1 street motor, you would never be able to tell the difference.

Master distributor for CP, JE, Wiseco, MTC, Wossner
 
Big Jay said:
Maybe he has to deck the block because it is too tall for the busa compression height??
Click to expand...


AT KPM they have some gsxr pistons running in roller engines.

the clearance is of no consequience if it comes off of the top or extra space is put under . if you are billing a customer may as well make some money.... cant get the same mark up on a pre fab gasket as you can for machining set up fee, and 2 or 3 passes on the surface broach.

Ive seen spacer plate of .125 to get xs 1100 pistons in a KZ deck hgt right (1060cc) suqeezed up to 15-1

I'd probably choose back off the cam timing to ablige a tall crown too. (instaed of more deck clearance)
 
I understand what he said to be, was that the compression height of the busa piston is less than that of the GS motor. So in he installs the busa piston, it would be 2 mm "in the hole" at TDC. You cant fix that with a larger base gasket. You would have to mill the block down to bet the correct deck.
 
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