Quote:

I did read that some one tested the flow of the Cat housing with the one smaller passage and even though it was smaller flowed fine

Since then 440Source now has a housing with their name on it, changed, not sure if it has the small passage, if it matters anyway.

Then again I read another post about opening up the small passage with a die grinder , an easy job.

All in All I have the small cat housing on my stoker motor with NO overheating problem


I have the Cat housing same as the Source housing. Even with the smaller passage it never runs hot. The problem was the old Source water pump. I used a napa replacement with the Cat housing and can't get the car over 180 in traffic on a 100 degree day.

Last edited by ireland383; 05/03/11 04:08 PM.