replacing lifter shims

[Eskimo]

any tps or tricks would be very helpful. Thanks

 

[CyFi6]

Remove the cams and it's painless.

 

[Eskimo]

k could i reuse the bearings from the cams or no

 

[CyFi6]

No bearings for the cams! Just make sure you remove the caps in the correct order. Also make sure you put a decent amount of lube on everything when you put it back together, and torque them to spec in the proper order.
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=EM&P=48

That's the installation order, removal is the opposite.

 

[Eskimo]

k thanks alot.

 

[hvyman]

Make sure the cams and journals are spotless and lubed before you put them back in.

 

[mikeoc1]

Ive done it twice without removing cams, no problem. Once with large flat screwdriver and magnet. Then once with the toyota special tool and magnet, which was even better. If you dont remove the cams just follow the tsrm http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=EM&P=7

 

[Eskimo]

i pulled the cams today to get at the lifter shims and i noticed the cam journals were scared up how can i fix this without droppin a bunch of cash. cause im broke as hell anyway

 

[suprarx7nut]

I've had a couple heads with cams that weren't very smooth and drove with no problems. One was really bad, but it drove fine. You may be able to have the head line honed, I'm not sure if there any way to replace the "bearing" material that should be on the head short of buying a new head...

 

[AJ'S 88NA]

The scoring may accually be babbit material, don't clean it off. I would check your clearances.

 

[toyotanos]

The head itself is the bearing material, no babbit on them.

 

[NashMan]

i just remove cams makes life easy

on uppgraded spring it real pitta with the shitty tool

 

[Integrity]

Cam journal to cam bore scoring is commonplace for aluminum heads running overhead cams. I agree with AJ's 88NA not to do much cleaning. Yeah, you could polish the surfaces smoother, but cam oiling clearances are part of your overall oil circulation system. Extra clearance from polishing this area risks low oil pressure. Yes, there are cam bore rebuilding kits available to local engine rebuilding shops, but most don't do it because it isn't in high enough demand to get payback. You could send your head to a cylinder head specialty shop if you still want it done.