Competition Head gasket for p-pump 12v

[DRadzierez]

I got 310 hooks at 85 to 95 psi with orings and copper gasket before it let loose.

 

[bluthndr]

Man when I see all you nay sayers here all I can do wonder how some of you come to these assumptions. O-Rings are fine as already stated but you have to go back and do your retorques the proper way.

What is the "proper" way. No offense, but everyone seems to have a different opinion on it, and after having 4 failures, I'm looking for other ideas/variables. Most likely I'm going to go to 14mm in the spring...

 

[SmokinRam]

I got 310 hooks at 85 to 95 psi with orings and copper gasket before it let loose.

Dave,



That was a pretty good setup, wasn't it... :-laf

 

[RyanB]

When I had my engine built at Haisleys they said the most important thing to do with either the Fire-ring or the O-ring is the retorquing and keep up with it. Since they had my engine there being built I had them cut the block and the head for Fire-rings but they say that even though its cut on both sides... it will still leak if you don't have the time to check the torque all the time! I went as far as doing 4 retorques in a row after the first 4 heat cycles and then another one after the first oil change (200miles) and then I did one other one when I changed the oil at 1000miles (total engine life). The first 2 times they actually moved more than 1/4 of a turn and that was with 14mm studs at 155-175 ft/lbs!!!



It is a pain though doing the retorque because I have to remove my injection lines, torque them down then reset the valve lash and then put the lines back on but its the price you have to pay to play with boost!!!!! or so I think anyway.



RyanB

 

[Timebomb]

It is a pain though doing the retorque because I have to remove my injection lines, torque them down then reset the valve lash and then put the lines back on but its the price you have to pay to play with boost!!!!!

I just finished my 3rd retorque this morning. It is a pain but the more you do it the quiker you get at it.

 

[Jim Fulmer]

Very true, I have it down to no more than 1. 5 hrs from start to fire up!



Jim

 

[RyanB]

well, then it looks like I am making good time (about an hour)... must be the Cummins in the GMC though... I can crawl right in there and do everything sitting on the inner fender!, easy access to the back studs, and if I want to take my time I could lye down and have a short nap! Building the truck was a pain but working on it now is pretty easy!





I was talking to Van (Haisleys) about getting ready and head fire-ringed for my brothers truck this spring... we are going to drive down for two days and they will just swap his out for an already machined one. Anyway, Van wondered if his was leaking or if he was just planning for the future? because he said that Terry (Coppess) is still running the stock head gasket and stock head bolts and he seeks quite a bit of boost! Basically his theory is the old saying "if it ain't broke, don't fix it". Thinking about what he said though, if we would be closser to them I would probably just wait for it to leak but being 8 hours away and an international boarder its safer to just plan ahead and do my theory "do it once, and do it right!"



RyanB

 

[F8LDOSE]

My old pulling engine made over 1000rwhp by the owner after me. 100psi, nitrous, all the abuse you can think of. It only had a PDR o-ring job, 14mm studs and marine gasket. Thats proof enough for me... . it's all in the quality of the job. Spend money to have it done right the first time, not by billy bob jr that thinks he should be able to do it.

 

[BigBadDodge]

My old pulling engine made over 1000rwhp by the owner after me. 100psi, nitrous, all the abuse you can think of. It only had a PDR o-ring job, 14mm studs and marine gasket. Thats proof enough for me... . it's all in the quality of the job. Spend money to have it done right the first time, not by billy bob jr that thinks he should be able to do it.

WORD





BBD

 

[Forrest Nearing]

man, Jim I clicked on page 4 without looking at page 3, and I though you had a head gasket job down to 1. 5hrs! LOL



I'm planning another retorque this weekend... gonna take them up to 120 and install my DDP4's finally.



it takes me a while, but I'm methodical (slow), and if I don't hit the torque value while approaching it, I back it back off and go again... and resetting the valves takes a good while too

 

[Jim Fulmer]

1. 5, now that is funny. I'm not really that fast with a headgasket, maybe because I've only changed it twice, once when I bought the head, another when I swapped short blocks. Got my head back today from the valve bending job and picked up that stocker cam to put in this weekend if all goes well.



Jim

 

[RyanB]

1. 5, now that is funny. I'm not really that fast with a headgasket, maybe because I've only changed it twice, once when I bought the head, another when I swapped short blocks. Got my head back today from the valve bending job and picked up that stocker cam to put in this weekend if all goes well.



Jim[/QUOTE



Sounds like you got a few gifts early and will now be busy this Christmas weekend!!!



Im just starting my shopping today and told my wife I need $750... she thought I was buying her jewlery or something then asked what I was doing with it. Said $500 was for my self for preformance Christmas presents for the truck and $250 was for her..... well, she almost blew a Head Gasket :--) :--)



Have a good one everybody!!



RyanB