JGS 50 wastegate and man controller
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
JGS 50 wastegate and man controller I have the JGS 50 wastegate, it came with an installed spring, and an extra helper spring-I ran it with the single spring, but boost was low, so I installed the helper spring, saw around 9 lbs, a little hard to keep 100% TBS to max RPM w/o tire spin
I picked up a man. controller I was going to install-I orig had the boost line right after the turbo, before the IC'er-i read the boost after the TB
I pulled the wastegate, used an air pressure/gauge setup, and dial ind on the valve-with the 2 springs, its around 16-18 PSI to move the valve, and 5 w/o the 2nd spring
What kind of boost could I get with the single spring and the man controller hooked up-there very well could be some rest going thru the IC'er and TB/90 Deg adapter, since I never saw that much boost-not sure what boost I would see with the boost line hooked to the intake, I don't want to over boost it
I picked up a man. controller I was going to install-I orig had the boost line right after the turbo, before the IC'er-i read the boost after the TB
I pulled the wastegate, used an air pressure/gauge setup, and dial ind on the valve-with the 2 springs, its around 16-18 PSI to move the valve, and 5 w/o the 2nd spring
What kind of boost could I get with the single spring and the man controller hooked up-there very well could be some rest going thru the IC'er and TB/90 Deg adapter, since I never saw that much boost-not sure what boost I would see with the boost line hooked to the intake, I don't want to over boost it
TECH Addict
Joined: Jul 2013
Posts: 2,189
Likes: 123
From: Portland, Oregon
If you have the ability to test it with a gauge and air compressor, why don't you put in the single 5# spring, then test it again with the boost controller at its highest setting, and again at its lowest.
That should give you a ballpark figure of your boost range.
That should give you a ballpark figure of your boost range.
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
What I ended up with was taking the boost ref off the turbo output and moving it to the intake, so it sees what the engine is seeing-I left out the big spring, just used the stronger smaller dia one, then used the turbo location for the ref to the man. controller, then to the upper fitting in the wastegate
The vent hole will bleed off boost from the upper fitting
Just testing the single small spring it doubled the large spring boost, so hopefully this gives me what I want-I realize actual running things will be diff, but at least I might be able to adjust the boost now
The vent hole will bleed off boost from the upper fitting
Just testing the single small spring it doubled the large spring boost, so hopefully this gives me what I want-I realize actual running things will be diff, but at least I might be able to adjust the boost now
