Ring question
10-24-2003, 06:27 PM
#1
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Thread Starter
Ring question
What would you do?
If you had the intake manifold off your 86 NA engine, the oil pan off, would you go ahead and pull the head and install new rings, or would you put the engine back together and leave the old rings? Then engine has 140K.
I have talked to a couple of mechanics, one says he would defintely put in new rings, the other say he would leave the old, that new rings might not seat properly. I do not know the condition of the engine, I think I will pull the head and check the valves, I am leaning toward new rings but wondering if anyone has installed new rings and if they had a seating problem. Thanks
If you had the intake manifold off your 86 NA engine, the oil pan off, would you go ahead and pull the head and install new rings, or would you put the engine back together and leave the old rings? Then engine has 140K.
I have talked to a couple of mechanics, one says he would defintely put in new rings, the other say he would leave the old, that new rings might not seat properly. I do not know the condition of the engine, I think I will pull the head and check the valves, I am leaning toward new rings but wondering if anyone has installed new rings and if they had a seating problem. Thanks
Last edited by Charlie; 10-24-2003 at 11:08 PM.
10-24-2003, 06:55 PM
#3
Done With Sidepatch
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Originally posted by Mark Parker
My rule of thumb,,if it ain't broke, don't fix it.
My rule of thumb,,if it ain't broke, don't fix it.
10-24-2003, 06:55 PM
#4
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Especially on a non-turbo 944 (which may be less likely to eventually have a BHG), I would leave the engine intact unless you feel the head needs work for some other reason. Don't pull the head unless you NEED to.
The bottom ends are pretty solid, with the exception of the rod bearings, which I bet you are replacing right now (since you have the oil pan off). YMMV Al
The bottom ends are pretty solid, with the exception of the rod bearings, which I bet you are replacing right now (since you have the oil pan off). YMMV Al
10-24-2003, 07:37 PM
#5
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When I bought the car it was not running. There was no oil pressure. It has not been driven in 2 years. The battery was bad and the car would not turn over so I bought a battery and was going to see if the engine would move, as soon as I turned it over it cranked and I immediately shut it down. I have since found a shot balance shaft bearing and bushing. I have put new rod bearings in, the old ones looked good.
I am waiting for parts to fix the balance shaft, I have put a good used oil pump on since the car had a diagnosis from a Porsche repair place saying the car had a bad oil pump.
I am waiting for parts to fix the balance shaft, I have put a good used oil pump on since the car had a diagnosis from a Porsche repair place saying the car had a bad oil pump.
10-24-2003, 07:47 PM
#6
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Charlie do a leakdown test. That will determine condition of the rings. But you may have other issues if the pump was bad, so get the thing running, put some miles on it then test it. Simple test, if its smokes you're toast.
10-24-2003, 08:11 PM
#7
If you have the crossmember out from under the car to do the rod bearings, how will you support the engine from the top if you take the head off? I thought the rear support point for an engine hoist chain is on the camshaft (cover) assembly.
