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Join Date: Sep 2004
Location: Coventry, CT, USA
On bikes shipped to the US, the number stamped on the engine starting with SB5 means it is a 996. SB8 is 916, SB3 would be a 748. I have found some info that indicates SB5 may also mean 998 or even 999, but I am not 100% sure of that. In any case, those are DQ heads, so it is a 996.
The X after the SB5 means it is a 1999 model year.
The 88MM bore on the cylinder you show must be from a 748. Does it fit the cases you have? My understanding is the 996 had a larger stud spacing than the old 916 and 748 cases. Something is odd if that cylinder fits a case with an SB5 number on the ID. Unless, and i have not heard of this before, the 748 inherited the same 996 stud spacing when they replaced the 916.
2001 900SSie (gone, but not forgotten)
2003 ST4s (The Truck)
1995 916 (Junk Yard Dog)
Last edited by SS904; Mar 16th, 2017 at 5:29 pm.