just bought one

Hi everyone, i've just bought a 1994 n/a auto supra, and from first glance it looks great, only thing is the heads blown and so it will need a new gasket. My main question is can you use the gasket for the Turbo engine on the non turbo one or are they different, and if anyone has any tips on how to do this or has done how should i approach this?

Thanks Brad

Welcome to the club mate, Im sure someone will be here to answer your question. Id put a post in tech aswell to get more coverage

Well found out i can actually use the 2jz-gte head gasket on the 2jz-ge, i'm quite confident in the gasket swap but if anyone has done this before it would make it a lot easier

You may find it would be cheaper to fit another N/A lump.

really?? surely that would cost hundreds of £'s and then the hassle of fitting it, all that needs to be done is planeing the head and reffitting of a gasket? or am i missing something

Welcome , I would of thought the gaskets would be slightly similar ...

Another member on this forum or another said the Head Gasket from the 2jz-gte will work on the non-turbo which is just as i thought

When you say the head gasket has blown, what is the condition like of the internal engine?

David mentioned as the NA lumps are fairly cheap it might be more cost effective just swapping the engine.

Hello and welcome

As i said i bought it with the gasket blown, and i haven't had a chance to strip the head off and examine it, but if i were to swap the whole engine would it be worth finding a stock 2jz-gte engine with the stock twin turbos to put in it?

you would also need the wiring loom if you was doing the transplant

Yes, seems like a lot more work, i will just get the head gasket and do the swap myself far less hassle and cheaper

Has the car overheated? If so you might want to consider getting the head skimmed.

Yep thats the plan, get the head planed down in case it has warped, and depending on how much i plane it down i might need a slighlty thicker gasket.

But also a thinner gasket will increase the power produced by the car right? So how much thinner gasket do people normally use safely, so i can take the difference away when the head is planed down, as if it is too much i might need a thicked then original gasket. Anyone know what the stock gasket thickness is?

I think the NA engine runs a higher compression than the TT engine, but you'd need to know specifics before considering using a TT gasket.

OE head gasket = .2mm for GE vs 1.6mm for GTE.

I'm getting a whole gasket kit now including Head Gasket, valve stem seals ect which is for the 2JZ-GE so it all will work, only question is how much should i skim my head down if it is warped to keep the compression safe?

If your in the proccess of changing the head gasket why not do the timing and aux belts just as a precaution??

The belt kits are pretty cheap for the n/a.

Just a thought

Good idea, although the belt was changed at 50,000ish miles so is it still worth swapping?

If the heads warped then its scrap, you can skim the face but what about the cam journals ?

Good idea, although the belt was changed at 50,000ish miles so is it still worth swapping?

I would. If the old belt had done 15,000 miles then I'd probably keep it on. Doing it whilst having the head off means you've done most of the hard work already, so it's basically just the cost of buying the belt.

Whilst the gasket itself is probably cheap to buy, it's the other parts that get replaced at the same time that will push up the cost of the job. It'll mean you're running with new belts etc though.

Completely different beat I know, but I changed the HG on a Rover K-series engine once and although the gasket cost £30 ish, altogether it cost over £100 (belt, gasket sealer, engine flush, skim, stretch bolts etc).

I don't mind spending the money now to get the engine running in good condition as i didn't pay much for the car, i found this gasket kit, is it a good deal??

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=390090665254&ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649#ht_4113wt_905

If it fits well it's very good value. If it doesn't it's false economy. You always take a chance with non-Toyota parts as to whether they'll fit properly or not.

well theres still returns? And also is it compulsory to change the head stretched bolts, and if so where do you suggest i get them from?

I'm at the edge of my knowledge about the stretch bolts. I'm not sure if all engines have "stretch" type head bolts. I know Rover's K-series engine does, but that doesn't help you much. It was an indication of how the parts that need changing add up.

Stretch bolts can be re-used if they're within a certain tolerance.