head bolt question

88_GT_5_oh

Sportin' a turbo 5.0 in Canadistan
Jul 4, 2004
1
0
1
WPG/MB/CA
probably a dumb qeustion but i have never done this before.

i popped a headgasket this sumemr.... just now i finally have time to fix it (motor is on a stand) can i re-use my ARP head bolts? i was talking to my buddy who is a ford tech and he said factory bolts need to be replaced, but he didn't know about the ARP bolts, i figured i could reuse them but thought i would ask. i have no idea cause i have never done a headgasket before. don't know if it matters but they are Trcikflow Twisted Wedge Heads
 
ARP bolts are reuasble. Here's some tips to help you on your way...

Get 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.

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. Make a scribe mark on the distributor base and engine block. Now you can pull the distributor out. When you re-install the distributor back in the engine, make sure you are still on TDC compression for #1 and then line up the scribe mark on the distributor and engine. You will be very close to where the engine was timed when you took out the distributor.

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)

Machine shop charges will vary - figure $275-$350 to have heads checked for cracks, cleaned, surfaced, valves ground, valve guides reconditioned, valve springs checked and bad springs replaced.
 
cool thanks for that.... i was unsure and i remmeber my dad telling me "the only dumb question is the one not asked" so i figured i'd be safe and ask. i never really thought of taking the heads in to get checked but i may do that just to be safe. the motor only has like 2000 km's on it so i think it should be ok..... what do you think?
 
i am ordering a bunch of stuff from summit and was thinking of picking up some head studs. are they gonna make any difference with 8-10 psi of boost? i thought i read somewhere you have to pull the motor to change head gaskets with head studs. is that ture?



man i feel like such a newb right now... i can build a damn turbo kit but i have no idea on head studs lol
 
If your boosting I would go with the head studs. Id also get the heads checked out before you put them on. I just put a set of gt40p heads on my car and am looking at a possible bad valve seal because I didnt get them looked at. Live and learn.
 
i am pretty confident that the heads are good cause they were new when i got them and only have ~2000 km's on them. but then again it would really suck to have to rip the motor apart again in the spring cause i got lazy this winter
 
+1. When I popped a head gasket this summer, I had my heads checked "just to make sure". I also changed to a different head gasket and to studs since I think the problem was head lift with my spray.
 
pulled my heads tonight with a buddy. and i have a question about head gaskets now

my motor is bored out .040 (says on the top of the pistons). stock bore according to my haynes manual is 4.000" correct? i am looking on summits website and they don't have a gasket for that bore. it goes from 4.030, then it skips to 4.050 :shrug: now i did do alot searching this couple past days on head gaskets and i read that fel pro 9333's and cometics seem to be a popular choice for lower boost. so i was gonna go with one of those gaskets, but i am confused as to what size gaskets i need to buy now.