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JE high-comp install 900SS

Started by TAftonomos, October 21, 2011, 05:20:14 PM

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Cloner

#15
October 25, 2011, 11:23:24 AM
Quote from: brad black on October 25, 2011, 04:00:58 AM
...they've not pinged on...carb bikes with the timing pulled back a few degrees. 

How many degrees is that, exactly? 

Are you removing meat from the flywheel at the trailing edge of the trigger shoulder to accomplish this, or using aftermarket ignition modules?  If aftermarket, which modules?  If modules, any problems with them?  Whew....that's a lot of questions for "a few degrees".   ;D

Thanks in advance, BB.

Cloner
ABQ, NM
Never appeal to a man's "better nature."  He may not have one.  Invoking his self-interest gives you more leverage.  R.A. Heinlein

'64 Ducati Monza 250
'67 Aermacchi/HD Sprint SS (race bike)
'00 Aprilia RSV Mille
'03 Ducati 800 SS (race bike)
'04 KTM 450 EXC
'08 Kawasaki Ninja 250 (race bike)

TAftonomos

#16
October 25, 2011, 11:27:51 AM Last Edit: October 25, 2011, 11:29:25 AM by TAftonomos
Quote from: Raux on October 25, 2011, 05:08:32 AM
I'm thinking "N" stands for iNtake?
Dunno, but it's on the top ring so  ???

Quote from: Raux on October 25, 2011, 05:09:34 AM
Why not pull the heads and do a port/polish and reshaped the combustion chamber to better match the new pistons?
Cause that is $$$, and this bike isn't about spending $$$  ;D  I went with the forged pistons as they were cheaper than a set of rings for the stockers from ducati.  

Looks like I might NEED a TCIP4 now  :-\


I have a lathe in the garage, but I'm not sure how to go about fixing the piston in it without marring the skirt. 

Brad, did you reshape the piston with a mill on a rotary table?  Anyway you could describe how you did it?

Speeddog

#17
October 25, 2011, 03:00:14 PM
You can use some thin sheet aluminum to 'pad' the jaws so they don't mar the piston.

You'll have better luck grabbing the piston up in the ring area, as they're usually round there.
Everywhere else they're not round...

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brad black

#18
October 25, 2011, 04:42:46 PM
Quote from: greenmonster on October 25, 2011, 10:46:34 AM
Did the warping cause the heads to leak oil and, if so, did the machining fix the leaks?

yes, the traditional 906/907/early st2 oil leak from between cylinder and head.  bizarre they leak oil out of the chamber, but not combustion.
Brad The Bike Boy

http://www.bikeboy.org

brad black

#19
October 25, 2011, 05:04:38 PM
Quote from: Cloner on October 25, 2011, 11:23:24 AM
How many degrees is that, exactly? 

Are you removing meat from the flywheel at the trailing edge of the trigger shoulder to accomplish this, or using aftermarket ignition modules?  If aftermarket, which modules?  If modules, any problems with them?  Whew....that's a lot of questions for "a few degrees".   ;D

Thanks in advance, BB.

Cloner
ABQ, NM

3 degrees.  we used to move the pck ups, now i would shorten the leading edge of the lump by 1/10 of its length or just use a TCIP4.
Brad The Bike Boy

http://www.bikeboy.org

brad black

#20
October 25, 2011, 05:05:36 PM
Quote from: TAftonomos on October 25, 2011, 11:27:51 AM
Dunno, but it's on the top ring so  ???

N is just je ring speak for "this is the top".
Brad The Bike Boy

http://www.bikeboy.org
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