mycotopian

I found a cheap pair on ebay to try it on. that that way I minimize my downtime. I want to do a P&P and a performance rebuild on them. What else needs to be done while I have them apart. What are the best type of valves etc to put in there.

I have read several articles online that say its a piece of cake and only requires a dremel and some grindine stones is this true?

rimpainter.com

I wouldnt mess with them. I would drop them off at a known pro and have them done. Its not worth the R&R only to find out you didnt do it right.

I just bored out my TB, and its not as easy as it looks with a dremel. I can only imagine how long it would take on a pair of heads.

MTL_4runner

It is definately not a piece of cake and takes a long time to do on iron heads (aluminum is much softer). You will go through a TON of grinding stones. The best way is to get a carbide bit (they are expensive) and an air grinder.....still takes a long time to do even with that setup. I would do what 96runner says and take it to a pro unless you just want to have fun and experiment.

I would suggest if you do go it yourself to just do the exhaust and leave the intake side alone. The rough surface (unless your turner your runner into a dragster) will help quite a bit on the torque department.

rimpainter.com

I am pretty sure we have aluminum heads and an iron block. Sorry if I misunderstood your response MTL...

just wanted to clear that up.

Zubaltec

First off don't even try to learn how to port on a head or set of heads that your going to plan on using. You'll find it a big waste of time. You won't get the ports to match without a flow bench. People who port head use electric drills not air tools. This way you can regulate the speed by a switch and not by feel or with your ear.

Just my .02.

Thanks,
John

MTL_4runner

Your totally right 96runner (we do have aluminum heads....din't mean to confuse anyone) so it will be a bit easier than iron, but as I am sure you can attest to aluminum can be tough to work with too because it doesn't self clear very well (in other words it likes to stick to the abrasive) when you sand it.

mycotopian, Just take it slow and you should be ok.

rimpainter.com

Cool, we were on the same page.