Pressure testing a CM870

[Rawze]

(08-03-2019 )Evotrucker Wrote:  ...
Would the max boost rating be around 40 psi? Shouldn’t be 10-15 psi be enough?

I only ever use ab out 10-15 psi, unless I am looking for something no one else has found yet.

It gets dangerous to put 40+ psi on the engine with just some plugs or block plates. Not because the engine can't take it, but it is a serious safety hazard. One of those boots, plugs, or block plates lets go and you may be looking at a new windshield, or a trip to the hospital.

Sometimes, it is actually more effective to only put about 3-5 psi on the engine, then spray everything with soapy water, watch for bubbles.- It all depends on the type of leak I suppose.