engine change

[john w]

Hi people, can anyone tell me if 1998 L motor will fit into 1990 H frame,
and what needs to be changed? (cdi - coils, ect;) kindly advise.
John.

[RedexRobB]

Welcome to the forum john

I do believe the engines will swap with no modification, but dont quote me on it. On of the racers on here (sloweracing) has done it, he can advise you further.

RobB

[SplaTZXR400]

Hmmm interesting. well in theory if the engine is the same or similar dimensions, it should fit, you shouldn't i dont think need to change the cdi or coils, as they both rev at 14,000 redline n the coils stil make a spark. but im not sure how diffrent they are really. i think some1 said the rads bigger on the more recent bikes compared to old H models, which would otherheat, so check the brackets, other than that i cant say.