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Engine Specific Info and Questions => IDI Engine => Topic started by: ORCoaster on February 20, 2022, 04:49:56 pm

Title: Boosting to 10 psi while NOT driving
Post by: ORCoaster on February 20, 2022, 04:49:56 pm

I am suspicious of my head gasket letting loose only once I get to 10 psi of boost.  I have used the glove on the reserve tank and it never inflates at idle or if I Just Rev IT!

I think I need to get the boost up but how can I do that without tying the back end down to something and slipping the clutch a bunch while holding the throttle down.

Has anyone done this successfully before?  I don't want a Darwin Award for launching my Caddy into the house or into the street and take out some poor Escalade. 

Thoughts and comments are welcome, just make em reasonable eh?

Title: Re: Boosting to 10 psi while NOT driving
Post by: fatmobile on February 20, 2022, 08:35:21 pm

So you are trying to see how high the pressure is in the coolant reservoir when the boost is at 10psi?
 But you can't get boost without load.

Swap to a VNT-15,.. you can get boost of 10 with no load, ha.

Otherwise, a pressure gauge on the coolant line while watching the boost under load might work.

Title: Re: Boosting to 10 psi while NOT driving
Post by: ORCoaster on February 21, 2022, 03:09:53 pm

Yeah, I was trying to get it to boost to 10 without it moving.  I don't think the e-brake is good enough to hold it at 2800 RPM.  I don't have three feet to be able to hold the brake down and slip the clutch while pushing on the accelerator.  I might try doing that with a stick, maybe. 

I also thought about the boost gauge hooked up to the coolant lines, a tee at the reservoir might be all I need.