l33t_piro

I need help with Dowel Pinning for my rx7 if someone can please post a link to a site with visual instructions on how to use dowel pins or some with dowel pinns it would help me alot.

Mr rx-7 tt

iTrader: (5)

Why do you want to dowel pin?

l33t_piro

because im running a 500 horspower 13b engine and 24psi 0f boost and i keep breaking the rear side housing in my engine . if this help you understand a little better im useing a microtech for my fuel system and egnition. im runing 116 octane and my air fuel missed is 11.7 maybe with this info you can see why i would want to pinn my engine.

peejay

11.7 ???

Mr rx-7 tt

iTrader: (5)

11.7 ? Tuning is lean. We run 600 plus rwhp and don't pin.

l33t_piro

oh its lean well what do you recomend i set my car to?

rxtasy3

iTrader: (2)

from what i've read, it should be up around 13-14. am i right?

coldy13

Running lean like that will crack backplates quickly. Mine lasted 500miles before it cracked

kabooski

some tuners here localy and in australia say
that mid to high 11's (11.6-11.9) is fine for boost under 16Ibs
on race gas

I cracked a plate within 3 months after building and breaking in my engine (under 1K miles )

Lets just say

A) I will be pinning all my motors for now on
just to add strengh against "twisting" not just to band aid tunning

B)going for low 11's high 10's A/F's
this time around
My A/F was in the 11.8's
and I most admit
it ran fine on race gas
but as soon I mean as soon as I put in 93 octane... crack!

So you have to decide whether you want to be borderline and make maximum power

or loose a tad bit of power but be safer
Thats the key question one must ask themselves

_____________
87 TII
S4 13BT
T-66@14 PSI
LTX-8

11.72@118

ronbros3

Hey check out , dowel pinning costs