I'm planning on getting some RS machine 81.50 pistons but I would like to retain the factory Honda h/g. The question is, will it fit or do I need an aftermarket one? If not then some guy is selling some itr 81.25 for 200 shipped with rings. Thanks for the help.

 

OEM headgasket will work up to and including a 82 mm bore.

 

Someone sell me some new 81.25mm pr3/ p30 pistons so I can save money on not milling the rods for itrs

 

Just use RS machine PRs no machining required.

 

Just don't order them FROM RS Machines....based on what I've heard about their customer svc.

I think KTeller is a dealer.

 

Someone sell me some new 81.25mm pr3/ p30 pistons so I can save money on not milling the rods for itrs

 

Yeah you are right about the service both rs and kteller n trackspeed, I called them and all I get are answering machines and they don't call back.
Well anyways, do RS MAKEs 81.25? Would like to order asap and they aren't much help. Thanks you guys appreciate it.

 

Also depends on how much chamfer was put on the top of the cylinders.

 

i had good luck getting my rs pistons off an ebay vender, had mine in about 5 days. good info to know about the oem gasket safe to 82mm.

 

 

OEM bore on b sires gasket is 81.75 i do not suggest using one for 82mm only up to 81.75 if you need bigger we stock 82 83 84 84.5 85 86 and 87mm OEM over bored gaskets if needed

 

Should only be used up to 81.75mm.
GE overbored OEM gasket for anything else.

 

Hmm, I done this on several occasions with zero problems. I guess .0098" makes a difference.

 

I have done this as well (on 82mm) w/no problems but curious what would be the drawback of .010 of gasket hanging over the bore? Guessing it could create a sealing issue? Remember its only .010 were talking about?

 

Actually it is only .005.

 

Lol, yes if you consider only radially.

 

exactly what I was just thinking about its .005 a side... .010 total.

 

if you run it and it works thats fine but i would rather have one that fit the bore or was bigger then my bore than take a chance with a smaller bore gasket.

 

Why not smaller?

The reasoning on why will help peeps here.

:thumbs up: for community help.

G'Obama.

 

Smaller has the possible problem of a hot spot, or detonation. Same as not boring your head to fit the bore. The smallest I have ever measured a Stock gasket is 81.75mm usually they are a bit bigger. If this was a turbo, I would run an 82.25 gasket, NA seems fine. And this is the NA forum.

 

Dont argue with the Master of the Universe.Plus it looks like hes tight with YOUR president.
he he he ho ho ho ha ha ha.
gettin warm out your way yet D?Its frickin 90 here.But it supposed to warm up.

 

Guess you gonna have learn that secret handshake....

[Randee, Omni, Don, Whitfield inner-cirlce info]

 

I want in.

 

Oh shiit did i tell you about that ?Now dats funny

 

ah I see.....