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GS850 HC pistons & cam cap mods

49er

49er

Forum Sage
Past Site Supporter
Here are some pics of my custom pistons and the modified camshaft bearing caps that went into my 850. I'm not a prolific photo taker, hence the scarce number of pics.

http://i155.photobucket.com/albums/s309/49er_photos/PistonLG_Mod.jpg
http://i155.photobucket.com/albums/s309/49er_photos/Cap2.jpg
http://i155.photobucket.com/albums/s309/49er_photos/Cap1.jpg

For details of the cam cap machining proceedure, check out my previous posts under "Torqueing of torque".
I will produce a more detailed photo and instruction record of the mods when I next have the cam cover off. This will be when the motor has seen 2000kms since the rebuild and will give a reasonable indication of wear and the likely success of the mods for a long term fix. After the first 800kms, endfloat knock is still non existant.
Cheers
Ian
 
RacingJake said:
Yeap, something about those pistons
Click to expand...

Are you referring to those "offerings to the god of speed".
Kiwis have a proven track record for engineering innovation and are encouraged to "look outside the square" for a solution.
I watched TWFI for a second time last week when one of our local TV stations aired it. It amazes me that Berts class record was set in 1967 and that it still stands today. It is probably a twin class and up to 1000cc. Can anyone confirm that?
If not, surely one of our "speed crazed" GSR members could launch a serious challenge to this record. Has it been challenged in recent years?
 
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