crossfire intake runner size inconsistencies
Thread Starter
Burning Brakes
Joined: Sep 2017
Posts: 940
Likes: 169
crossfire intake runner size inconsistencies
measured a stock manifold runner size, all different. lots of casting imperfections. height varies from 1.35" to 1.4". width varies 1.01" to 1.1"
porting all runners to 1.4"x 1.1" would be more than a stock head could flow. I think 1.4"x1.188" can be done safely. this is porting the full length of the runner. I know people have made them bigger. I've read that port matching the floor does nothing
thought I would pass on this info for anyone that wants more out of there crossfire manifold
porting all runners to 1.4"x 1.1" would be more than a stock head could flow. I think 1.4"x1.188" can be done safely. this is porting the full length of the runner. I know people have made them bigger. I've read that port matching the floor does nothing
thought I would pass on this info for anyone that wants more out of there crossfire manifold
Le Mans Master
Joined: Aug 2017
Posts: 6,942
Likes: 1,490
From: New Jersey
measured a stock manifold runner size, all different. lots of casting imperfections. height varies from 1.35" to 1.4". width varies 1.01" to 1.1"
porting all runners to 1.4"x 1.1" would be more than a stock head could flow. I think 1.4"x1.188" can be done safely. this is porting the full length of the runner. I know people have made them bigger. I've read that port matching the floor does nothing
thought I would pass on this info for anyone that wants more out of there crossfire manifold
porting all runners to 1.4"x 1.1" would be more than a stock head could flow. I think 1.4"x1.188" can be done safely. this is porting the full length of the runner. I know people have made them bigger. I've read that port matching the floor does nothing
thought I would pass on this info for anyone that wants more out of there crossfire manifold
Thread Starter
Burning Brakes
Joined: Sep 2017
Posts: 940
Likes: 169
