Cheers for your replys guys, i always appreciate good no bull information. The motor is in the car and running atm. in fact Ive been driving it daily for the past two weeks so its not quite on death row. But I do have a history of thrashing motors till they die so Id like to get on top of this one before I end up stuck on the side of the road begging workmates for lifts to work like has happened in the past.
It is a smallport motor and Ive tapped a thread into the final injector port and loctited a nut in there to prevent it from blowing out. I havent had the carbs tuned yet but they generally run pretty clean for twin carbs although sometimes depending on conditions you do get the occasional crackle or pop from the carbs under low load (ie driving around the carpark). Ive also got a straight through exhaust (no mufflers,two resonators or hotdogs) so it backfires fairly consistently whenever you come off the gas.
I have noticed a ticking or knocking noise coming from the back/top of the motor when idling. it can be quite loud (you can hear it from inside the car). Something else that has been bothering me is that when I first installed the motor it would start out rough and then rev hard all the way to over 7000rpm. Now it runs a bit better down low but wont rev beyond 5500-6000rpm. It seems to rev fine up to there and then suddenly breaks down as if its valve bouncing or the dizzy has shit itself. It almost sounds like its hitting a rev limiter.
Thats where the motor makes all its power...its poo
