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Old 02-26-2014, 06:54 PM   #1
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Head gasket suggestions

Doing the head gasket on my 97 900se vert due to some leaks.

Just looking for some suggestions on head gaskets.

What are good and what are bad.
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Old 02-26-2014, 09:21 PM   #2
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Don't use anything but the Elring one, that's what the OEM part you'd get from the dealer is.

Get the block surface really clean.

That's about it.
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Old 02-28-2014, 06:12 AM   #3
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When you're cleaning the block, fill the cylinders with something; rags are fine. Just make sure that when you scrape the block, the muck doesn't end up down in the rings.

I use a razorblade and brake cleaner. It seems to work fine. you could use a whiz-wheel, but use a scotchbrite, not a metal. you don't want to cut into the metal.

Any time the head comes off, you should be dropping it off at a machine shop to be planed. I always have my guy inspect it, and adjust guides/replace valve seals.
If you're looking to have minimal downtime, buy a junkyard head and have it re-worked prior to dismantling. do NOT put a gasket under a non-planed head.

Get new head bolts or head studs. Replace the thermostat, and clean the thermostat housing or get a replacement. It's not just the thermostat housing, but it also serves as a couple very important grounds.

lastly, be VERY careful pulling the head off, and pulling the head over the chain guides.
If you happen to lift the head up, and it gets caught on something, it's almost a guarantee that when you lower the head to disconnect whatever you missed, you'll break the tip off the rear guide.
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Last edited by g96nt; 03-01-2014 at 11:11 AM.
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Old 02-28-2014, 09:09 AM   #4
 
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All of the above, from both Drew and Craig, but especially this:

Quote:
Originally Posted by g96nt View Post

Any time the head comes off, you should be dropping it off at a machine shop to be planed. I always have my guy inspect it, and adjust guides/replace valve seals.
If you're looking to have minimal downtime, buy a junkyard head and have it re-worked prior to dismantling. do NOT put a gasket under a non-planed head.
The HG kit comes with valve seals for a reason, so order that first and send them off with the head to the machine shop. Depending on the shop and the work done, you can expect to pay anywhere from $250-$350 to have the head cleaned, planed, valve seals replaced, and valves lapped in. You shouldn't need a full regrind of valves and seats...
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Old 02-28-2014, 10:30 AM   #5
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+2 on new valve seals. Intake and exhaust manifold gaskets and new exhaust / turbo studs are good to do if it is going to the machine shop. I pull the head off with the exh manifold still on and let the shop handle it.
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