Glowing headers

IQ52 said
I was trying to s

I was trying to stay out of this, too many bad suggestions on where to start. I own/run a dyno, we have thermo couples in the headers we run on the dyno. During engine break in if the exhaust gas temperatures are getting to high, the first thing we do is advance the timing. It is pretty common for us to use 36 degrees total advance at 2,500 rpm. If you make it richer without advancing the timing I believe you will burn even more fuel in the headers and they will continue to glow.

Jim La Roy
La Roy Engines
Challis, Idaho

He needs to do both and I even told him one way to get close to the optimal timing for break in, however, the fact remains that it is screaming lean .

barnett468 said
its screamin lean. go up 2 to 3 sizes.

after it starts and you turn it up to 2000 rpm, advance the distributor around 4 degrees . if the rpm goes up noticeably . leave it there and reduce rpm to 2000 . i can tell you how to set your timing curve later if you want.
.