sc300jon

At 101k it's probably time for a valve adjustment. Over the last few years the idle has deteriorated and I cannot find any fault with the engine management system; my experience scanning the diagnostic code is so far a bust.

Does anyone know the valve lash spec? Hot or cold?

Has anyone known a valve adjustment on these cars to be beneficial?


I am looking for some cause to the nasty idle.

-Jon

lxxxs

nasty idle huh? im ur same boat.
but my problem is ive had the head adjusted twice!
new larger valves and springs locators even a port and polish and a 5 angle valve job. u know the real kicker its worse now than before. u wanna buy a head? LOL

but 2 ur question, u probably dont need a vavle adjustment the valves are regulated by shims, and they are to be set when cold.

and it is a really big project, like 3 grand at the dealer, and i had it done twice, my dumb ***

u can get a whole new jap spec non turbo supra motor for like 1800 and installed for about another thousand. more power even.
huh, u do the math.
i just got my new motor, jap spec 24k on it nice very clean. i just need to put it in now. ill let u know if theres any difference in power.
Jc

sc300jon

Is the Japanese Non-turbo engine more powerful than the one sold in North America?


-Jon

lxxxs

not for sure but usually they are.
ill let u know after i get it put in.
Jc