Removing Exhaust Manifold And Head Question

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RRoller123
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Removing Exhaust Manifold And Head Question

Post by RRoller123 »

I have so many questions that come up while taking on this head swap. Thanks for your help.

Couple of current questions:

4-2-1, 80 FI 2L

I am pulling the head and have the exhaust manifold nuts (along with 4 studs) removed.

Is it necessary to fully remove the manifold from the 6-bolt downspout, or is there usually enough slop to fit a new head and exhaust gaskets, etc. in with the 4-2-1 manifold in place? (I was amazed at how easily the exhaust studs and nuts came off with a little penetrating oil.)

But 4 of the 5 studs came out with the nuts, only the front stud stayed in place and just the nut came off.

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'80 FI Spider 2000
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124JOE
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Re: Removing Exhaust Manifold And Head Question

Post by 124JOE »

have you ever double nuted a stud before?
put a nut on but deep enuff to put on a second one then tighten them together
but not down to the manifold
then try to loosen the stud

hope this helps.joe

then you can leave the manifold alone
when you do everything correct people arent sure youve done anything at all (futurama)
ul1joe@yahoo.com 124joe@gmail.com
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aj81spider
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Re: Removing Exhaust Manifold And Head Question

Post by aj81spider »

I pulled my head a couple of times leaving the exhaust manifold in place. There was a fair range of motion that let the manifold get pulled back from the head.
A.J.

1974 Fiat 124 Spider
2006 Corvette
1981 Spider 2000 (sold 2013 - never should have sold that car)
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RRoller123
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Re: Removing Exhaust Manifold And Head Question

Post by RRoller123 »

Excellent, thanks for the help! I will pull that last stud and leave the manifold in place. The nuts and studs at the head came off easily, but the 6-bolt junction at the downpipe looks a lot more corroded in place. Not going to touch it unless I have absolutely have to.

Pete
'80 FI Spider 2000
'74 and '79 X1/9 (past)
'75 BMW R75/6
2011 Chevy Malibu (daily driver)
2010 Chevy Silverado 2500HD Ext Cab 4WD/STD BED
2002 Edgewater 175CC 80HP 4-Stroke Yamaha
2003 Jaguar XK8
2003 Jaguar XKR
2021 Jayco 22RB
2019 Bianchi Torino Bicycle
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