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Can head gasket for 4agze be replaced with engine in?

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Kookabanus
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Re: Can head gasket for 4agze be replaced with engine in? 2014/11/26 15:09:26 (permalink)
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I had a lot of trouble getting the crank pulley bolt off with a socket and extension bar. You can lower the motor enough pretty easily but at least for me, no amount of manual force was going to loosen that bolt. Ended up having to go to a garage to get it done, apparently the rattle gun had no issues. 
I later heard of someone who wedged the socket against the chassis somewhere and just turned the key and used the starter motor to loosen up the bolt, although I wouldn't recommend it...
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maj
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Re: Can head gasket for 4agze be replaced with engine in? 2014/11/27 11:52:05 (permalink)
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Yeah a PROPER rattle gun will do it. Those 2HP compressor jobbies most people have in their garage have no hope of loosening it.
 
I didn't have any luck with the breaker bar hence soaking it overnight. I was using a cheap and nasty 1/2" torque wrench and it fit perfectly for cracking. Just note though don't ever expect accurate results from a torque wrench you've used it to crack a bolt. They're only good for torquing up bolts, not loosening them.
 
Yep starter motor method can work too but is very risky of it coming off the nut and causing carnage in the engine bay, as well as putting stress on the starter motor and battery.
 
One tip I've learnt is to use a car jack (not a wind up emergency one) on the end of your breaker bar. Pump the car jack, it turns the breaker bar and voila! cracked bolt and hardly any strength needed.

--
"Autodub" - 1987 AW11 G-Limited, Dark Blue Mica 4AGZE T-Top 4EAT
MY15 BRZ Special Edition + STi muffler, Coil Springs, Tower Strut, Wheels & Sound Tube!
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FuzzNugget
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Re: Can head gasket for 4agze be replaced with engine in? 2015/01/16 10:00:51 (permalink)
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Some good tips here.

I have only done 4age head gasket/water pump/timing belt in another car, however from working on my 4agze, my best advice is to remove all peripheral components in that area to make your life easier, there is not a lot of space to work in there. I couldn't even get my alternator out without removing the fan-housing and a mounting bracket.

Maj- the jack solution sounds like a win. On other cars I have used a breaker bar with 2m of steel pipe over the handle to extend the length and leverage (just to crack the thread).


I was planning to embark on a similar mission to freshen up my 4agze in the car, but just acquired an engine hoist so will probably drop the motor out and clean everything up... Yay!
post edited by FuzzNugget - 2015/01/16 10:04:36
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Spaceresearcher
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Re: Can head gasket for 4agze be replaced with engine in? 2015/01/23 11:55:31 (permalink)
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Two's R Us, stock a replacement gaskets as well.
http://twosrus.com/catalo...27&products_id=850
 
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