Head gasket replacement + more ?'s

plastic_cow said:

Alright, I'm venturing to replace my head gasket (leaky) and I was going to put on a GT40 intake my neighbor had laying around (nice guy) What do I need to buy as far as gaskets? Oh, he had an intake spacer (1/2") would I need longer bolts when I bolt the heads back on?

Click to expand...

You would need longer upper intake bolts for the spacer. They should have come with the spacer. He might still have them laying around, if not you will need longer ones.

plastic_cow said:

Are these the right gaskets for the gt40 intake?
Intake Gasket Set

Click to expand...

Those should work just fine.

plastic_cow said:

(if I need another for the spacer
for the other side of the spacer?

Click to expand...

That one will work just fine as well.

plastic_cow said:

Are these right for the heads?
Head Gasket

Click to expand...

These gaskets are good replacement gaskets and should work just fine.

plastic_cow said:

Would these work for bolting it down?
Head Bolts

Click to expand...

Those will work but I would suggest ARP's like these from here. Part # 070-154-3601

plastic_cow said:

Anything else I'm missing? Oh, since I'm putting a different intake on, do I need another gasket to go from my cold air intake/TB into the GT-40 intake?
Something like this?

Click to expand...

Yes you will need some of those as well, but make sure they are 65mm openings on the gaskets. If not try these.

plastic_cow said:

Thanks for all the help, I tried researching as much as possible, before posting, I hope it helps you help me... how cliche... Thankfully I'm not doing the install alone!

Perma Newb...
P-cow

Click to expand...

Good Luck.

Other things to keep handy is some good gasket remover discs like this. Along with a good gasket scraper.


Some Ultra Blue Silicone Sealer. Like this.


And some cleaner, like Carb Cleaner or Brake Clean to clean the gasket surfaces really good.

you will prob be ok w/ the stock pump, when u get new heads, to go w your intake (which i highly suggest you do while everything is apart, but money may be an issuei dont know) you should probably upgrade than, but for now - if u dont do heads, you should be fine, but if wouldn't hurt to upgrade...
Paul Perreca

I would say a 155 LPH or 190 LPH should be fine. You don't necessarily need a new FPR but an adjustable one with a gauge might help you fine tune a little bit.

Good Luck.

Plan on 3 days to do the job if you haven't done it before.

Day one gets the heads off in 4-6 hours. The A/C Compressor comes off with lines still connected. Mark all the electrical, smog and vacuum lines with tags to help you remember where to re-connect them.

Day two gets all the gasket surfaces scraped off extra clean and the heads dropped off at the machine shop if you are going to have them reconditioned. Time here is another 4-6 hours. Whatever you do, don't skimp on cleaning the gasket surfaces. New gaskets need to seat against bare metal and not the residue left from the old gaskets in order to seal leak free. This is the most time consuming and tiresome part of the job. Look for little things that need to be replaced like the short hose from the thermostat hosing to the water pump, damaged vacuum lines and hose clamps that are rusted or broken.

Day three starts when you get the heads back from the machine shop. This is the time to pick up all the little odd pieces you found needing replacement on your day two inspection/cleanup. Plan on 6-8 hours to reinstall the heads and reconnect everything. Plan on an additional 2 hours to troubleshoot/adjust everything.

Now for some practical tips:

Plan on cutting the thermostat to water pump hose, or removing the thermostat housing. Also plan on removing the distributor to get clearance to remove the intake manifold. Remove #1 spark plug, stick your finger in the spark plug hole and crank. When your finger gets air moving past it, stop cranking. Turn the engine until the timing marks line up with the pointer. Now you can pull the distributor out.

You'll need new head bolts - get ARP bolts ($40) or studs ($93, maybe more). All the bolts get antiseize under the bolt heads, and everything but the short head bolts get it on the threads. You need Teflon pipe dope or ARP sealant to coat the threads of the short head bolts. The short bolts go into the water jacket and will seep coolant if you don't use the sealant.

My favorite trick that saves time and effort is the stay in place gasket. Be sure that you scrape (don't use a wire brush) all the old gasket material off, then clean all the surfaces with acetone or MEK.

When the surfaces are clean, use weather strip adhesive on the head to manifold surface, and on the side of the gasket that mates to the head. Follow the instructions on the tube or can and when it gets tacky, press the gasket down on the head.

Clean the area where the rubber rails mount to the block in front and in the rear with more acetone or MEK and do the same trick with the weather strip adhesive that you did to the heads.

Coat the rubber seals and the gasket area around the water passages with lots of Blue Silicone gasket sealer and put it together. Walla! No leaks and no gaskets that shifted out of place.

If you reuse the injectors from your old setup, a repair kit is available from most auto parts stores if needed. Coat the injector body "O" rings with oil before you use them and everything will slide back together.

For iron heads, clean the combustion chambers with a wire brush in an air or electric drill. I used a scraper for the pistons. I don't like to use the wire brush on pistons because it will remove metal very easily.

Change the oil once you get everything back together. Once the engine is up & running, run it for 1-2 hours and change the oil.

Tools: a good torque wrench is a must have item. A razor blade scraper that holds a single edge razor blade from Home Depot or Ace hardware is another handy thing. Get a Chilton or Haynes shop manual - you'll need it for the bolt torques and patterns. The intake manifold has an especially odd pattern. You'll need access to a timing light to set the timing after you re-stab the distributor.

Consumable parts:
Fuel injector seal kits with 2 O rings and a pintle cap (Borg-Warner P/N 274081) are available at Pep Boys auto parts. Cost is about $2.74 per kit. The pintle caps fit either injectors with a pin sticking out the injector end or 4 with more tiny holes in the injector end. The following are listed at the Borg-Warner site ( http://www.borg-warner.com ) as being resellers of Borg-Warner parts:

http://www.partsplus.com/ or http://www.autovalue.com/ or http://www.pepboys.com/ or http://www.federatedautoparts.com/

Most of the links above have store locators for find a store in your area.

Head gaskets
upper manifold gasket
lower manifold gasket set.
Exhaust manifold gasket set
Rocker cover gaskets - look for the rubber ones with the steel bushings - Summit has them
Short formed hose between thermostat hosing and intake manifold
6 ft 7/64" or 1/8" vacuum hose
2 ft 1/2" heater hose
1 1/2 ft 5/8" heater hose
Blue Silicone sealer
ARP antiseize or equal for the bolts
ARP thread sealer or Teflon pipe dope for the short bolts.
4 each 3/4" hose clamps (spare item in case the old ones are bad)
4 each 1/2" hose clamps (spare item)