Engine/Transmission (1994 - 1998) How much boost is too much boost??

[C. Harlan]

Well, my Stock HX35-12 decided one 50 PSI pass was ok, and then let go at 49. . I would not go over 35-40... just watch out! its a beeyotch to clean out turbo guts!



-Chris-

 

[dpuckett]

A little off topic here, but I hit 38 psi on the way home tonight. I dont think I'm anywhere near 300hp, though. I was thinking around 240-250 flywheel hp. I know the lack of intercooler will hop up my boost numbers vs hp made; i. e. the 1 psi=10hp rule wont apply here. So where am I, HP wise? I know it's hard to tell without doing an actual dyno run, but I can hit the governor in 5th (84 or so) <1/4 mi on odometer. The reason I make this observation is that if I can nearly peg a 40 psi gauge with stock injectors, it wouldnt be that hard to do it with 300hp and an intercooler. would it?

Daniel

 

[vssman]

Hammer,



Thanks for the info. I'm just trying to get as much knowledge as possible so I can plan my future 'breakdowns' (read that as head gasket, etc... ) Your right about the hybrid - for what it costs, it was definately worth it.



Dan, It's pretty hard to guess an HP level based on boost once a truck is modified from stock.

 

[Stroker Smoker]

I see 40-43 PSI Everytime I drive my truck. I have seen 50 PSI twice but it makes me really nervous with the HX35 and stock head gasket.

 

[MCummings]

Yall that are pushing 40-50PSI with a Stock HX-35/12 will benefit incredibly from upgrading to a PDR 40/16. I'd dare say 100HP more, and lower EGT.



Merrick