Thread: Boost gauge fitting

Hi,
If it were my Isuzu, The pick up would be somewhere in or very close to immediately to the inlet manifold. That way you get a reading of what pressure is actually being pushed into the engine (not just the pressure the turbo is making).

My 2 cents.

Brian

My turbo has a spot for measuring boost built in.. and this is what I use. I did wonder about how much the pressure would differ between the turbo and the inlet.

Has anyone measured the difference?

The difference can sometimes be as much as 2 psi. Big intercooler etc. Having it on the intake manifold will also help with diagnosing a leak along with noticing poor performance and an increase in black smoke (eg. if you had a rock go through your ATA Intercooler or a loose clamp or something).

Ok, where would you put it on this engine?

Originally Posted by Davehillbo

Ok, where would you put it on this engine?

A t piece can be fitted to that short line in the pic from the inlet manifold down to the fuel pump boost compensator. it is the pressure signal for the boost fuel enrichment.

jc

Thanks JC, Have done this but it appears my gauge may be faulty, not reading vacuum!

there is no vacuum in a diesel manifold. hence the vacuum pump on the alternator for the brakes.

jc

Thank you JC, learn something new every day.
What sort of PSI should I be getting?

David.