finally got the supra running GOOD

[themadhatter]

well i had allready posted how i got anna runing but shortly after she wouldn't start back up so finally after a day of trying to get her started i figured i'd check the cam timing again(was in spec first time i started her) and sure anuff the exhaust cam had had jumped about 5-6 teeth off??? but i'm glad to say now shes running like a champ (knock on wood). I do have to go back and set the timing with a light because i just set it by ear but thats no big deal.
i was happy so i thought i'd make a post never did find out what the 2 unplugged connecters under the dash went to but every thing in the car is working so who knows

 

[johnathan1]

How in the world did you set the timing by ear?

 

[Syris]

you listen to how its running

 

[themadhatter]

lol man you've never set your timing by ear it must be a v8 thing lol thats where i learned to do it just listen to how the motor is running when you find the spot you think its running the best you've got it. works in a pinch but doesn't replace a timing light

 

[johnathan1]

Ah, well I've never worked on a V8...maybe its practical, but not for a 7M...you don't hear any difference when turning the CPS.

 

[CRE]

The differences on the 7M are subtler, but there is a difference... and no, timing by ear is no replacement for a timing light.

Did you find how the timing belt managed to let loose of the exhaust cam that much?

 

[themadhatter]

i have no idea i must have adjusted the tensionar wrong becaus after i fixed it i haven't had anymore trouble

 

[QWIKSTRIKE]

Make sure that the belt is in good condition.

 

[themadhatter]

I checked the belt theres no excess slack in it or signs no wear(cracks/rips) so i guess it in good shape

 

[bwest]

just for fun I've retimed motors in all my cars by ear. When I check with the light it's a rare day to be off more than 1 deg. But yes, the 7m is harder than SBF...

It can be done, but always good to double check.

 

[themadhatter]

Took anna out for her first test run today. I only took her to the end of the road and threw the yard but it was still fun as hell from the end of the road to the hous is about 1/16 of a mile lol but i was glas to see she was making a solid 7.5 psi seemed odd because of the fact i don't have an exhaust on only a downpipe and it has a k&n cai but what ever it was fun. I do think i have a boost leak some where for 7.5 pounds it felt kinda slow might be that I haven't put a timing light on her yet? but man she can cut some mean dounuts it the yard:evil2: lol

 

[johnathan1]

7.5 psi is a little higher than stock pressure, its probably going a little higher because you have an intake, and partial exhaust...

And setting the timing will give it a little extra power too.

 

[themadhatter]

got the exhaust on to day so i the supra should begoing on the road soon(depends if i want to paint her first). sounds good but theres a backfire at about 3k and theres a hesatation when you press on the gas but that was there before i was just happy to have this checked off my long list

 

[johnathan1]

Have you checked the small vacuum nipple on the back of the intake manifold (faces the firewall)? That could be a boost leak, and is also the vacuum source for the stock boost gauge.

 

[themadhatter]

my stock boost gauge isn't working i need to check that out could be my vac leak

 

[themadhatter]

good news i found my vac leak the hose that hoes from the 3000 pipe to the bov had a split on the bottom i fixed it and the supra feels like a different car now. From first she pulls hard all the way to redline unlike before where she fell on her face at 4.5k