boost pressure Where to set?

[Tapage]

Originally Posted by brownbear

what typically is the "range" one of these engines run at? 60 psi? just wondering if I do buy a oil px gauge then do I get the 0-100 or 0-200 gauge?

2F and 2H engines 62PSI @ 2000 rpm .. ( with operative temp )

[expat]

remember that guages are most accurate in the midrange (middle third)... so 0-100 seems about right.

[silvercrusher]

Originally Posted by BURGER

Why do all these web sites that I read all have a bleed off port. Is the the design for some other type of turbo or only for gas motors?

Again going on Gt theory. Bleed air is required to stop the surge and stall that can occur during startup or initial spoolup. If you have air constantly moving through the turbine you have less chance for it to reverse flow . It pretty much allows the pressure to build slowly instead of slamming the turbine with max pressure. You may be eliminating the need for this by using the variable spring setup. Try without like you said and if it doesn't "unload" Then put it on.

[BURGER]

Originally Posted by silvercrusher

Again going on Gt theory. Bleed air is required to stop the surge and stall that can occur during startup or initial spoolup. If you have air constantly moving through the turbine you have less chance for it to reverse flow . It pretty much allows the pressure to build slowly instead of slamming the turbine with max pressure. You may be eliminating the need for this by using the variable spring setup. Try without like you said and if it doesn't "unload" Then put it on.

Good explanation!