Pressure testing a CM870

[Rawze]

(08-03-2019 )Evotrucker Wrote:  Hey folks! Morning!

So I want to pressurize the entire block by blocking of the intake, cac and turbo with 10-15 psi to find this damn boost leak I’ve got.

Is this 10-15 psi to much? It wouldn’t damage a head gasket or something?

This is on a Volvo 670.

Thanks!

make some block plates at the intake of the turbo and the outlet (or use pipe plugs). As far as the engine is concerned, you should be able to safely go up to 5 psi over the max boost rating of the engine.