What's redline boost #'s for a 35/40 hybrid?

 

42 is about all you should go.
It can go higher, you just wont be making anymore power.

 

i ran mine at 40 for a loooong time with no problems.

my buddy took his freshly rebuilt one to 38-39ish twice and it exploded.

take that for what it's worth.

dave

 

Mine saw low 40's for a year without a problem. EGT's climbed real fast after about 36+ psi.

 

Mine's regulated via boost elbow to 45-46. Been that way for a couple of years. It'll peg my 50 psi gauge with the elbow cutting off the signal to the w/g. I found 45 to be just about the limit where EGT's seem to not climb. Above that and they go up.