4agte head work

[tsoob]

ive gotta pull my head off again, i cooked it and have either done a gasket or a crack not sure yet, my question is are there worthwhile mods to do while i have the head off, im going to do the valve stem seals as it is sucking oil down at the high rpm rev range, is it worth porting or getting better cams springs etc??
Thanks,
Nick

[tsoob]

anyone comment on these parts?

http://www.trademe.co.nz/Trade-Me-Motor ... 739017.htm
http://www.trademe.co.nz/Trade-Me-Motor ... 739014.htm

[matt dunn]

just be aware of the cost of fitting the oversize valves to a head,

there is more than just the cost of the valves.

[tsoob]

yeah dont think ill bother with that anyone use steel head gasket> worth the extra money?

[flygt4]

use the TRD 3 layer steel one, they are very good and its one less thing to worry about. my engine had one and it run 20-22psi for extended periods of time pretty happily.

[IH8TEC]

adn mines been raped with a std one and it's fine think matt had a std one on the old 20v turbo in his track car. and that head gaskit on trademe seems really expensive, might pay to contact warrick on that one

[AceSniper]

TRD ones are like 100$ new from toyota... for the $$ worth while

[matt dunn]

I still use the std 20V one in my current 440hp atw 7AGTE.

In fact, the engine builder recommended that over the TRD type.


I had a TRD metal one for the 1600 that I built, but looked at it and did not like it, so i did not use it and re-sold it.
I could not see what seals in between the 3 layers of metal,
and dont like steel gaskets anyway.

Matt

[Mr Revhead]

that TRD gasket on trademe is well over priced!

[tsoob]

thanks warrick ill email you once i have the head off and have a shopping list.
Nick

[tsoob]

head is off, gasket looks fine so suspect the head, who knows the cheapest (read:FREE or very close too) place for a pressure test,
i think its rubbish the head and replace but dont know for sure dont want to waste money to get a definite "yeah its f'd" answer..

while on this topic are arp head studs worth the money?

[bluemaumau]

yes. get them 41 does em cheap

[TRD_ZERO]

I dont know about free or cheap but id go to the cylinder head shop on sunnybrae road he knows his 4ages, speak to him.

[IH8TEC]

they are only necessarily if you plan on taking the head off much. standard bolts are cheap i beleive.

me running so much boost am waiting for something to go wrong so i have them incase i have to take head off and put on lots.

[rollaholic]

they are only necessarily if you plan on taking the head off much. standard bolts are cheap i beleive.

me running so much boost am waiting for something to go wrong so i have them incase i have to take head off and put on lots.

they look cool in project thread photos!

[tsoob]

they are only necessarily if you plan on taking the head off much. standard bolts are cheap i beleive.

me running so much boost am waiting for something to go wrong so i have them incase i have to take head off and put on lots.

they look cool in project thread photos!

Those are both extremely important facts to consider especially the photo bit! lol

I guess that means they are reusable brendon? how many times, i dont really want to take the head off lots but if i have another problem....

[IH8TEC]

i'd say re-useable as much as you need, as long as you give them a good look over each time, and mainly check the threads on the nut as well as the stud before you re-lube them, think they are lubed on the nuts.