454 Blown Head Gasket

Started by stopngo, November 03, 2015, 05:01 PM

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M & J

Rick, I think the guys were saying since its all open now why not? You know much of the bracketry is mounted to heads and will be gone. Water pump and harmonic balancer and boom. Im surprised no one said water pump also. But I agree with you, unless he was financially planning for that and the guys were saying do it while its easy for preventative measures.
M & J

cncsparky

Quote from: stopngo on November 04, 2015, 11:57 PM
At 66 k ??

I did mine, it had about 65K.  While it did have a little slop in it, It would've went on for quite a while longer I believe. 

http://www.classicwinnebagos.com/forum/index.php/topic,9139.msg46728.html#msg46728

-Tom

stopngo

I appreciate the good intentions of those who advise to basically leave no stone unturned but I also greatly appreciate this latest advice regarding a ceiling at some point.

I found myself wondering yesterday how the heads on or off have anything to do with timing chain access so I googled an image of the 454 Block which answered my curiosity.

Yes I found write ups about how the sprockets are coated with nylon or plastic which can come off causing havoc with Valves, pistons, and push rods but is there really an Epidemic in this regard??

Quotealso have radiator cleaned,
Radiator is brand new by mileage (3k) but old by the 8 years it took to put on the 3k. Coolant changed for piece of mind 6 months ago and flushed out for the heckovit. Do I do it again?.........thanks but I am hesitant there.

Rickf1985

You guys that are suggesting that he do all the stuff on the front of the engine should keep in mind that a head gasket job does not entail taking anything off of the front of the engine. What you all are suggesting with the radiator and timing chain is a LOT more work added into the job. I would measure the timing chain slack by looking at the distributor as I bar the engine back and forth. I will bet there is next to no play in that chain, surely not enough to warrant tearing down the front of the engine also.

I hate to say it but you have to draw a line on jobs at times. If you do the chain then you might as well do the water pump but hey, you are there what about the fuel pump. Well the emissions pump and power steering pump are right there and off so why not...................  Get my point?

And I just noticed that it appears he is not doing this job himself but is having it done. What you are suggesting he do will more than double the repair bill in labor alone.

cook elandan

If you are that far in the engine, I would also have radiator cleaned, change timing chain, even at 66k there is wear in it.

stopngo

Quote from: TerryH on November 04, 2015, 10:25 PM
Your wallet may not agree, but if you are going that far consider changing your timing chain as well. Preventive maintenance.

At 66 k ??

TerryH

Your wallet may not agree, but if you are going that far consider changing your timing chain as well. Preventive maintenance.
It is not our abilities that show what we truly are - it is our choices.
Albus Dumbledore

stopngo

Took your advice........Was quoted $900 plus tax. Sounds reasonable to me.

TerryH

To me, if you're going to the point of removing one head, pull them both and do both gaskets and shaving etc. if required. Majority of the work is getting to the point of pulling the head - why readdress the same problem - other bank - down the road?
My opinion.
Terry
It is not our abilities that show what we truly are - it is our choices.
Albus Dumbledore

stopngo


M & J

IMO: replace both gaskets and if one head needs decked do them both.
M & J

stopngo

The Left Driver side Head Gasket leaking without doubt......Right side not

Question .........Do I replace both just for good measure?? Or is it an if it aint broke don't fix it kinda thing.

If the leaking head is warped and needs machining obviously it increases compression ratio slightly while the other remains unchanged. Am I splitting hairs here or is there a real concern about creating an imbalance in terms of power ???