Boost question
05-30-2016, 05:11 PM
#1
Instructor
Thread Starter
Boost question
I have a YSI with a 3.0 pulley on it and a IW 10% over drive. I'm only seening 14 pounds of boost also on belt slip at all. Dose this sound right?
05-30-2016, 05:13 PM
#2
Race Director
Member Since: May 2004
Location: Raleigh, NC
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St. Jude Donor '15
What engine/heads/cam/exhaust?
05-30-2016, 06:51 PM
#4
Le Mans Master
It seems low to me but hard to know since every combo is different. For comparison similar setup makes 19.5lbs on my 402 with 245 heads.
I'd expect your bigger engine to make a bit less, but not sure it should be 25% less.
I'd expect your bigger engine to make a bit less, but not sure it should be 25% less.
05-30-2016, 11:47 PM
#5
Team Owner
Boost leak check, check the gauge, check for restrictions, and double/triple check for belt slip. Everyone says no slip but I've rarely found that to be true.
05-31-2016, 02:34 AM
#6
Safety Car
Just for comparison I have a ls3 with a ysi on a 3in pulley and a 10% OD crank pulley. I'm seeing 18psi. I would expect your setup to maybe see a little less boost but idk about a 4psi difference. I would check for boost leaks too.
