Toyota Supra Forums! Join the Supra forum! - Camshaft question (car wont start)

Toyota Supra Forums! Join the Supra forum! (http://www.toyota-supra.info/forums/)

- MKIII Supra (http://www.toyota-supra.info/forums/mkiii-supra/)

- - Camshaft question (car wont start) (http://www.toyota-supra.info/forums/mkiii-supra/12328-camshaft-question-car-wont-start.html)

Camshaft question (car wont start)

Why would the camshaft be hard to turn after engine removal and reinstallation? What went wrong?

Just the camshaft without any belts on it? Did you properly remove the head in the proper sequence and in multiple steps? Did you remove the cam properly and install it properly with a good assembly lube? If the head is warped too much the cam saddles can get out of alignment and stop the cam from being able to turn. You could also though, have valve issues.

My friend rebuilt the head (after a bhg). It was machined and also had a valve job, so he must have not put everything back in the correct sequence.

Or what else could he have screwed up? I'm gonna have to check up on it tomorrow (it's at his place), and I'll post an update.

If your friend did not set up the valve adjustment properly, that can cause your trouble.

Turns out the main and connecting rod bearings were damaged. Given that I drove my car perfectly fine to his place (he rode with me), I take it he somehow damaged them by not putting everything back in the correct sequence.

I'm gonna have a bitch fit now... :mad:

Next time I'll do it myself, I don't care how long it takes.

he worked on the head and the rod/main bearings got messed up? Thats not related at all

did he put the cam caps back on right ?

Did he do anything to the bottom end ?

he basically took everything apart except the block. I just don't get how something goes wrong with the crankshaft. He replaced the bearings (which he paid for) and the it still wont turn.

I don't get how he messed things up. The car ran beautifully.

I mean't to say CRANKSHAFT! My mistake...

I agree with CyF16. I am confused if you took it in for a valve job he would only need to remove the head. I have an '87 MKIII with the 7M-GE engine non turbo. I took the head off and took it to a shop that only did valve jobs. I had no problems.

There could be possibilty that he drained the oil and then ran the engine with out oil? If he is professionsal mechanic you should not be having problems. I am a car hobbyist. I learned the basics about auto mechanics taking a course as an elective while in high school over forty years ago. I have done some major work for myself, friends and acquaintances. If you have good hands on skills and you can read and understand manuals you do can a lot. However, the Supra has complex engine with computerized control and a very complex electrical system and vacuum system. As do almost all cars these days.

You need to find an experienced Supra mechanic. I noticed one of the replies you received is from professional mechanic. You problably have not had time to see if the valves adjusted correctly. Once your friend? mechanic confirms he has done it correctly. That may solve your problem. the guy who did the valve job on the head for me was not a Supra specialist.

Dan