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Old 09-03-2012, 05:57 PM   #1
zx5rider
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Technique Tuning Stage 2 Rebuild questions

So I'm rebuilding my car again because of the whole smoking problem after It over heated.

The engine is already out and completely apart and the new block is at the machine shop.

I'm gonna put this out there again just to see if anyone has any idea.

My starter was busted so I went in the store with the car running and came out to a cloud of smoke with the car still running. I was doing something earlier in the day and forgot to plug the power for the fan in. I had the car towed and replaced the radiator and the blown hose and coolant. It ran fine but then once it was warm started smoking(oil) but only at idle not when under load. The first thing people ask is about the turbo but I've had the turbo something happened when it overheated that I believe has nothing to do with the turbo setup. So I was like fine blown head gasket. Bought a head off of ebay that was already machined and a brand new turbo and head gasket but same problem.

The guys at my machine shop looked at the pistons and don't think the rings went bad and the only other thing they can think is either a bought a bad head or the block is warped.....

anyways my questions are what head gasket should I buy for this build I've been using stock, am I good with stock rods(I plan on making 450rwhp) and what kinda power loss would I see from the stock exhaust if any? I have the Magnaflow from a group buy.
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Old 09-03-2012, 06:04 PM   #2
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If you have pictures of the coolant lines etc. I'd like to see them. These cars must get very very hot, before issues. Did the lines have a white flim on the inside? At this point, I'd swap the block out. If you need a block I'll send you one for shipping costs. I have access to many, m54 blocks. 450 to the wheels is pushing it, they will fold over. If your doing a total rebuild, buy rods. If your machine shop can't tell if you bought a warped head, MOVE ON! They should have checked it twice before they even installed it. If you did the work yourself, you should have had the head checked. Exhaust 3 inch back, done. Just read your entire post.. Yes OEM head gasket, oem head studs over torqued, buy extras.

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Old 09-03-2012, 06:29 PM   #3
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Ill check the coolant lines later. The block the machine shop has is a different one I bought. no one checked the head I bought I just put it on. The machine shop did not build the engine I did.
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Old 09-03-2012, 08:37 PM   #4
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I use a cometic HG, it's a MLS gasket but is stronger than the stock one
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Old 09-04-2012, 05:25 AM   #5
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450 to the wheels is pushing it, they will fold over. If your doing a total rebuild, buy rods.
It's RPM that will kill the rods, not cylinder pressure.

These are an improvement on the rods you'll find in S52 engines...which lots of people make well over 500rwhp with.

Cardcounter made over 700rwhp on stock rods before they broke...but he was rev'ing to 8k rpm
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Old 09-04-2012, 03:12 PM   #6
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It's RPM that will kill the rods, not cylinder pressure.

These are an improvement on the rods you'll find in S52 engines...which lots of people make well over 500rwhp with.

Cardcounter made over 700rwhp on stock rods before they broke...but he was rev'ing to 8k rpm
cool thanks PEI
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Old 09-04-2012, 05:16 PM   #7
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cool thanks PEI
x2, thanks for the good info!
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Old 10-07-2012, 10:43 PM   #8
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Couple more questions.

Should I replace my chains? They have 160k on them.
Main bearings and rod bearing studs are one time use correct?
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