front cylinder crack help!!!

discussions specific to the 907IE
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paso750
paso grand pooh-bah
Posts: 5558
Joined: Sun Jul 18, 2004 12:00 am
model: 750 Paso
year: 1987
Location: southern Germany

Re: front cylinder crack help!!!

Post by paso750 »

I`d contact the last owner and ask what was done to the bike.
It would be good to know if the engine is still the original one or swapped for an ST2 engine but should be easy to identify as the 907ie engine is all black, the ST2 has silver cylinder heads, grey belt and engine covers and the clutch slave piston is different as well.

If it is a 907ie engine it would be good to know if a big bore kit was installed or if the original cylinders were bored to fit larger pistons. Then it also would be interesting to know if these parts were aftermarket or from a ST2.

You can go back to original cylinders/pistons (not knowing if the FBF chip is for a 944 kit) or have your new cylinder modified to fit the old piston. Looking at the grey areas on your old cylinders though I wonder if you`d also need new piston rings then.
Tamburinifan
paso grand pooh-bah
Posts: 1527
Joined: Thu Jun 21, 2007 12:00 am
model: 907 I.E.
year: 1991
Location: Gothenburg, SWEDEN

Re: front cylinder crack help!!!

Post by Tamburinifan »

I'd buy used ST2cyls & new rings to both pistons
and reassemble.
Gert

907 I.E. -91
M900 -97
MTS 1100s -07
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