mainer

so what your saying is that orings can be cut into the block or the head???


i'm swapping my 53 block out of my 98 truck for another bottom end next summer, and i was going to oring the head at the same time.... but if i could have the block i have sitting here oringed that would save me some downtime...

Hillbilly Delux

he has to do the block to doesnt he? or is doing the head only ok

RowJ

99% of all O-rings OR Firerings are done to the head only!

RJ

98.5POS

That's what I thought. Plus, ringing the block kind stops you from ever going back to stock.

justinp20012500

If the block is out of the truck, by all means o ring it.

joefarmer

We've been oringing the block for awhile now, even with the block in the truck. It's held up to incredible abuse from insane back pressure and nitrous. Keep 'em torqued and the quality of the machine work high.

brandon.

Munchies

IF your making the same power and you deicde to o-ring or fire ring it one day, it wont change the drive-ability of it. I never understand it when people talk like that. Or only 500 hp is driveable. what the heck ever

mainer

so the main reason most oring the head is because its much easier to take out of the truck than the block.... correct?


so correct me if i'm wrong.... there is no difference in install if you oring the block vs: oring the head?

justinp20012500

Yes, it easier to o ring the head.

I have seen guys use a BHJ with block template to cut the groove in the block.

What installation differance are you talking about? Just installing the head, cutting the groove, or installing the wire?

mainer

i just mean does it work exactly the same way as if you oringed the head?


just install the wire into the block instead of the head, put gasket in, put head on and studs....

is it any harder for the shops to cut the block for orings than the head?

justinp20012500

I do not know of any shop in Utah that has the tooling to cut grooves in the block with leaving it in the truck.

I do know of a couple shops that will cut grooves in the block but you have to have it out of the truck.

O rings in the block or the head... They both work the same for assembly.

For the average guy I would just oring the head.

mainer

well what i'm doing is swapping blocks basically... because the block i'm swapping in for the 53 block is out of an 89 so the head on it has the 9mm injector bores... so i'm going to use the head thats in the truck on the 53 block....


the block i'm swapping in is sitting on an engine stand in my garage....

98.5POS

PDI can cut the block in the truck, or at least that is what the owner told me. He said, and I quote "I'd rather cut the block in the truck than the head, I think it holds better in the block". I'm going with cutting the head, cause once you cut the block there is no going back!.

John DiMartino

As someone who has had twins ,and driven 75K miles on them,for over 3 yrs,I would not be doing this stuff to a truck you need to run 100-150 miles a day reliably. Twins are awesome,but eventually your going to lose a head gasket,if your lucky,only once every yr or 2.You will also loose plenty of exhaust gaskets,and just have more things to go wrong.Id have a backup mode of transportation available if i were you,just speaking from experience here.
Many of the guys who run twins,do not drive these trucks daily or very limited miles.If i had it to do over,I would not have twinned my truck,although I change my mind everytime i plant my foot on level 5

BigBlue

Umm I'm gonna have to beg to differ. A lot of guys on this forum drive their twinned trucks everyday and some of them use them for a living. You are the first person I know of that has had these kind of issues with twins. IIRC, paulb is driving his truck daily with twins, Jim Fulmer used to drive his truck daily with twins, rjohnson, bnold, twinturbopilot (although he popped his head gasket after I believe 2 years of running with no studs or o-rings), not to mention the guys in the 3rd gen forum. If your blowing head gaskets that often and going through exhaust gaskets that often then I believe that either your beating your truck to hard or somethings not setup right cause once your head is o-ringed/fire ringed/studded and everything is torqued properly and the engine is allowed to reach operating temperature before beating on it then everything should hold just fine.