When the T/C's first came to market, Axtell Sales had 4" cylinder kits, immediately.
Ron Dickey, owner, gave us a set to test with.
We in turn, gave them to one of our clients, building him a 100" engine.
The 1999 Dyna is still in service, and was set up with our Stage II Heads, Wood 9B, 45 Mik, and 2/2 Supertrapps.
Mid teens hp and torque if I recall.
A 98" engine is only .060" less bore than a 100", and I would be hard pressed to tell the difference, on the dyno, street, or race track.
Scott

 

So update I went with 95 inch Keith black 10.5 Forged pistons , cycle rama heads , cr 630i cams man it runs nice then I knew it was Exhaust time . I wanted a fat cat but didn’t want to spend the coin right now , after looking got a great deal on a Freedom union 2 into 1 , wow I love this pipe sounds amazing nice deep tone . Power is great pulls like a freight train from down low to the top , no Dyna numbers yet but seat of the pants is awesome even cruises at low RPM beautiful

 

I hope you have a dyno tuner lined up......

 

Did that original 4" kit require case boring?

 

No they were s&s drop right in

 

Thanks, but I meant the old kit that came out when the TC came out that Scott from Hillside was talking about. I can't imagine the cylinder skirts being that thin worked back about 18 years ago.

It's just recently that the 88" TC has the 100" kit because metallurgy is allowing a very thin cylinder skirt that's (more or less) reliable and won't crack. Same thing with the Sportster having the 1275 kit now. Very thin cylinder skirts.

 

Yes it did. The original SnS 4 inch bore kits were for 116s IIRC. Axtel and Wiseco had 4 inch bore 100 ci kits. All the kits required boring the cases.