I know, I know, that this is a long post butt, I've been trying to follow along with you DRZ/KLX 125 motor heads for some time now.. (reading all of your builds) I have an disfunction called C.R.S. (Can't Remember $hit) Help me try to get this right.
So? All the descendents from the 125 engine are as follows, pretty much every small vertical single cyclinder 4T engine Suzuki has produced. DR 100/200, SP 125,200, ATC LT 125,185,200,230 pull starts with auto clutch and the 230 Quad sport. Did I miss any? Wasn't there a 250?
All the kick start models (except the atc LT) will interchange most-to all crank case parts except the 200 and 230 quad sport because of the crank interference, primary gear drive, ingition, and oiling systems? They also have a longer stroke, longer rods, larger wrist pin size, and tall deck height to match.
So, All models will interchange top ends (cyclinders and heads). Even with the exemption of the crankshaft stroke and matching componets above for the 200+ models. For example and NOT FEASIBLE by any means but, the 230 qs head will bolt on a DR 100 engine? How, Does the LT 185 atc come it play
Other than the top ends the atc/LT crank case parts are renderd usless becuse of the auto clutch and pull start, etc.
OK. All performance camshafts (web, megacycle) can be installed on any of the cylinder heads mentioned above. The decompression heads (pull start models and the kicker qs) were not camshaft operated, It was mechanical.
Besides the limiting wrist pin size, A custom + 70 mm piston and +74mm o.d. sleve, w/stock stroke and cyclinder is possable such as your's Norcalklx.
Ive read blips of a Honda rod swap for larger wrist pin size and piston, but no detials.
I'll stop rattling and lock up the brakes right there. I could keep go'n.
Do I kinda, got it straight?