Camshaft question (car wont start)

sd88supra · 09-26-2008, 03:22 AM

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

CyFi6 · 09-26-2008, 06:13 PM

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.

sd88supra · 09-27-2008, 01:46 AM

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.

mrnickleye · 09-28-2008, 10:07 PM

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

sd88supra · 10-01-2008, 04:45 AM

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...

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

CyFi6 · 10-01-2008, 07:26 AM

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

Supra Greg · 10-01-2008, 07:45 PM

did he put the cam caps back on right ?

Did he do anything to the bottom end ?

sd88supra · 10-03-2008, 09:51 PM

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.

sd88supra · 10-04-2008, 01:44 AM

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

Dan Swanson · 10-04-2008, 01:58 AM

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

09-26-2008, 03:22 AM	#1
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	Camshaft question (car wont start) Why would the camshaft be hard to turn after engine removal and reinstallation? What went wrong? __________________ -1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage. -1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car. -1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.

09-27-2008, 01:46 AM	#3
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	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. __________________ -1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage. -1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car. -1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.

09-28-2008, 10:07 PM	#4
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	If your friend did not set up the valve adjustment properly, that can cause your trouble. __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.

10-01-2008, 04:45 AM	#5
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	Update 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... Next time I'll do it myself, I don't care how long it takes. __________________ -1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage. -1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car. -1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.

10-03-2008, 09:51 PM	#8
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	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. __________________ -1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage. -1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car. -1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.

09-26-2008, 06:13 PM	#2
CyFi6 3" Exhaust Join Date: Oct 2007 Location: SLO Posts: 234	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.

10-01-2008, 07:26 AM	#6
CyFi6 3" Exhaust Join Date: Oct 2007 Location: SLO Posts: 234	he worked on the head and the rod/main bearings got messed up? Thats not related at all

10-01-2008, 07:45 PM	#7
Supra Greg 3" Exhaust Join Date: Sep 2008 Location: Florida Posts: 64	did he put the cam caps back on right ? Did he do anything to the bottom end ?

10-04-2008, 01:44 AM	#9
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	Correction! I mean't to say CRANKSHAFT! My mistake... __________________ -1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage. -1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car. -1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.

10-04-2008, 01:58 AM	#10
Dan Swanson Stock Join Date: Oct 2008 Location: Orlando, FL Posts: 28	Dan Swanson 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

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