Most compression you've seen

[Paulie B]

This thread is for no other reason then curiousity. I know around 200 pounds then your basically fighting yourself.

Whats the max you have seen or better yet the max you have ridden?

[BUILDER]

My cub has 215 for some damn reason and I have rode it like that for 3 seasons now. I keep meaing to have Redline cut me some new domes but I always forget about it.

[coryv4]

i run 200psi comp in my turbo.

[trickedcarbine]

190 in my bitch

 

[n2otoofast4u]

i run 200psi comp in my turbo.

yrsfos

[special06shee]

My old 421cub was 195

[Nightmare]

176 here

[250rbanshee]

I ran 240psi in my old 250r.

[WINDYCITYJOHN400]

Trinity sent me a 210 compression with a 28 squish......

[Blownyel93]

My old cub was 215.......  stock stroke 68mm bore

[Paulie B]

I ran 240psi in my old 250r.

Damn that a good amount. How did it run like that? Were you on race gas or alky?

[250rbanshee]

Damn that a good amount. How did it run like that? Were you on race gas or alky?

It was very torquey.  The power was there at all times..no clutching just give gas.  Still revved out good too.  Squish was set at .045" and ran on Renegade 112 octane.  Uccr was 14.02:1.  That was such an awesome woods bike...I kick myself sometimes for selling it but it was a lot of maintenance...changing crank bearings every year and well you guys know how much race gas is these days.

[booxzzy]

fuk,my 125 psi seems ridiculous,but its stock so i guess thats ok,it still fires up

[BigRed350x]

130psi in my 10mil cub, and 150psi in my duner.  I never run anything higher than 160-170.  If its higher than that, I will get new domes cut.  Its all in how you set the entire package up and what you're trying to accomplish.  If you want a high rev motor, the higher compression will fight you.  If you want bottom end grunt, then the higher compression will help, to an extent, then it starts to fight itself.

 

-Jared

[Paulie B]

^ Words of wisdom.

I've ran as lil as 90 psi in my YZ400. It ran fine like that too. It was 27 years into a standard bore but I bought it in 07' though.

I ran 136psi on my 10mil for the first year and it ran pretty damn good.

I was hoping to see some crazy guy running 250+ one here not that I would but I was interested in the ride report.