Well, I sent a good head out for a port and polish to go along with a new turbo. This was to a family friend who had a flow bench in his garage but mostly does work on American V-8's for drag and dirt track racing. He went too agressive on the intake porting so long story short I've got at least 4 holes in the intake side of the head and questionable structural integrity on the exhaust side. Kinda mad but he was doing it basically for free so not too much.

Anyway, the core is trashed, he wants to patch it but I'm saying f' no, if anything from the patch job breaks loose it's going right into the combustion chamber and making things a whole lot worse. I've picked up another used head, only 16k miles on it for $50, but not stored properly so there is some rust on the valve face. I'll be disassembling it to clean up and was thinking about using the cleaner valves from the head that got messed up rather than trying to repolish these.

Has anyone rebuilt a head here, and are there any tricks to doing it? I've got the Toyota manual, but don't have tooling to measure the vavle spring tension and don't think replacing the guide bushings should be necessary with such low mileage. Mainly I was thinking just clean the valves, replace all the seals, and maybe polish the exhaust side, and not mess with any porting.

 

no porting is needed just a good polish job

since toyota has it dialed in pretty well enough as it is anyways...

 

are ya ever going to do a cam swap?if so i was allways told to get some springs,guides etc in the head to make things easy on ya ..

 

Not planning on swapping cams, seems kind of pointless with the VVT, at least on the intake side. Turbo but an auto trans, so I don't think I'll get much better response time on the throttle.

This is really just to clean up a used head to get it close to 0 miles status, i.e.e replacing wearing and rubber components.