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#16
01-17-2009, 07:50 AM
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Re: tdc after eplacing head gaskets 4.3
Hey duh1, I'm in Florence (SC) and know a fellow that's got a good 4.3 if you end up needing one. I think it came out of a ~95 blazer., anyway He wants $600 for the engine and 700r4 transmission hooked to it, just thought I'd throw that out there as an option. I bet there are a lot of busted blocks around here after the temp. last night, we're not used to this. Good luck with the repair.
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#17
01-17-2009, 10:33 PM
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Re: tdc after eplacing head gaskets 4.3
sorry for the late reply, but it's a 94 auto 4.3 c/k, a tad over 200k miles. a year ago it was overheating, so i did a valve job thinking it would also cure my overheating probs. it worked well for a while but i kept having sensor probs because the guy i paid to do the job sent the sensors to the machine shop with the heads. long story short i broke the cardinal rule here, i did not send the heads to be checked after this last overheating bout. after replacing head gaskets this week water was in 5 of 6 cylenders, commpressio test today ranges from a low of 60lb on #1, 90lbs on 2,3,&4, and betwee 110 to 150 on 5 and 6. so, i'm taking the heads to the shop for magnaflux and warp test, the valves and springs are just a year old so i'm not to worried there, will have them tested though. thanks to all that responded, looks like this one is gonna take more time and money
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#18
01-18-2009, 12:07 AM
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Re: tdc after eplacing head gaskets 4.3
Just a thought, have you by chance tried retorquing the head bolts. Could the head or intake bolts be streached from being overheated causing your problem? I know on some engines it is required to install new head bolts whenever heads are removed I do not know if this is the case on the GM's or not.
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#19
01-18-2009, 12:58 PM
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Re: tdc after eplacing head gaskets 4.3
I have never replaced chevy head bolts, but i guess they could streach. also, if oil and water have gotten under the gasket surfaces i don't think retorquing would help. besides if i take it down that far i might as well replace the gaskets and get the heads checked
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#20
01-18-2009, 04:25 PM
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Re: tdc after eplacing head gaskets 4.3
Best to install new head bolts any more.
There were also a few years that had bad head bolts. I have saw some break off. Good Luck
__________________
Remember proper testing gives us the answer to many problems. MT
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