Gee, I was running up one of the longer, more sustained hills in town and had it in second rather than third. I felt it bump a couple of times and noticed the boost was at 10 psi. Maybe I need to crank it up a bit. I do have ARP head bolts on it.
What do you think? Take it up to 12 or 15 before the wastegate opens?
Yep!! My 1.6 TD seen alot higher than that... My 79 would climb some steep hills around here.
OK, If it doesn't rain too much on Sunday, I will pop the hood and torque on a couple of those adjustment thing-a-mah-jiggies.
If I bump the boost up, I might not need to shift in the middle of the grade, doing that generally puts me in a no boost zone and in third. Not great performance at that point.
You will be wondering why you didn't do it sooner!!
I had such trouble with previous heads that when I finally got the hydraulic head I wanted to cautiously approach the boost level. Now that I am confident that the head will hold pressure I will tweak the level up. Will I be doing 30 psi?
Likely NOT!
30psi boost didn't make me go faster. I think due to back pressure.
I actually have more power with around 15-20 psi with the 1.6D.
I think the adjustment is good. 12-14 psi @ 4300 in second. Shifts between the gears seems better as the turbo holds the spool up better now. Not going to futz with it anymore.