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Should i even bother? Replacing head gaskets? by Indyellowgt
Started on: 11-11-2015 08:50 AM
Replies: 4 (181 views)
Last post by: Indyellowgt on 11-11-2015 12:09 PM
Indyellowgt
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Report this Post11-11-2015 08:50 AM Click Here to See the Profile for IndyellowgtClick Here to Email IndyellowgtSend a Private Message to IndyellowgtEdit/Delete MessageReply w/QuoteDirect Link to This Post
Hi all..
I've got a 2.8 here on the engine stand that lost the head gasket a while back.. It was drained of all polluted oil/water mix,filled with clear oil,pulled from the Fiero then put into my storage shed...
So,the bottom end has been sitting with clean oil for a while.. The engine was overhauled a couple hundred miles before the gasket failure(they did not properly fill the coolant system.... )

It has roller rockers,fierostore performance engine kit,cam,etc... As a side note; the engine ran strong when it was driven onto the car trailer...

I know it's just a 2.8.. But it will work fine for a clean stock V6 car I have here..
I can do the repair work here myself(I'll send the heads out to be pressure tested)so I'll be out the cost of a head gasket kit...
Thoughts? Will the bottom end simply fly apart or will it be decent/hold after the fix?

I'm leaning towards not doing it,but I'd feel bad tossing the engine of there is a chance..
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Thunderstruck GT
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Report this Post11-11-2015 09:01 AM Click Here to See the Profile for Thunderstruck GTSend a Private Message to Thunderstruck GTEdit/Delete MessageReply w/QuoteDirect Link to This Post
You don't "pressure test" a head, you magnaflux a head and check it for warpage.

Yes, you should do it and send both heads out to be checked. Obviously the engine got hot enought to push out a new head gasket, so it probably got hot enough to warp and/or crack a head.

I also suggest pulling the pan, a couple of rod caps and the main thrust bearing cap for bearing inspection due to the intermix caused by the head gasket failure.

[This message has been edited by Thunderstruck GT (edited 11-11-2015).]

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Indyellowgt
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Report this Post11-11-2015 09:10 AM Click Here to See the Profile for IndyellowgtClick Here to Email IndyellowgtSend a Private Message to IndyellowgtEdit/Delete MessageReply w/QuoteDirect Link to This Post
Good call.. Will do.. Thanks for the tips
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Report this Post11-11-2015 10:06 AM Click Here to See the Profile for dobeySend a Private Message to dobeyEdit/Delete MessageReply w/QuoteDirect Link to This Post
How long has it been sitting? Was the clean oil run through the engine at all after the change, or did it just sit in the pan?

If the engine's been sitting with internal moisture to damage things, it's quite probable that you have some rust internally. Does the engine even turn over on the stand, when you turn the crank? If it had water in the cylinders, the engine could be damaged enough to be seized completely.

Depending on how bad things are, you might have to rebuild the bottom end too at this point. :-/
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Indyellowgt
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Report this Post11-11-2015 12:09 PM Click Here to See the Profile for IndyellowgtClick Here to Email IndyellowgtSend a Private Message to IndyellowgtEdit/Delete MessageReply w/QuoteDirect Link to This Post
Hey dobey..
It has been sitting for quite a while...I
Did run it with fresh oil/no water in the system for a short time,ditched that oil\filter and re-filled the crankcase with new 5-30.

Have not checked yet to see if it cranks freely on the stand. I'll check it out..

Thanks for checking in. 👍
Mark
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