? on Boost Pressure
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
boost thoughout the rpm range is impossible to spec out. max boost is. like jim said 15-18. boost is dependant on fuel being injected, fuel injected is dependant on load on the engine, no load (idle, free wheel RPM, decel) no boost, hammer down with 5 ton behind you equals max boost. cruise set on flat highway 2 to 5psi.
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Freshman User
Joined: Feb 2007
Posts: 28
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Thanks for the info! I was looking at buying a set of guages so that I can see & learn what all these engines are doing as I'm goin' down the road. I saw two guages, one had 0-30 psi and one had 0-60 psi. I didn't want to buy the 60psi if it was only going to read 15-18psi. I'm obviously a first time diesel owner, but I'm learning a lot! Thanks again!
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
0-35 is a good range gauge. if you end up upgrading much you will wish you had gotten the 35 psi gauge. if you get a hot chip or bigger injectors you will easily go over 30 psi. its not so good for the turbo but atleast you can see it happnen.
Postmaster
Joined: Apr 2004
Posts: 3,658
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From: Ellensburg, Washington
wait til you hit 35lbs of boost on a stock turbo. that'll make your butthole pucker up and the aftermath is so rewarding cause you finally have a reason to tell the wife and justify as to why you need an aftermarket turbo. lol
Beer!
Cowboy Steve
Beer!Cowboy Steve
Post Fiend
Joined: Apr 2004
Posts: 12,835
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From: Silver Lake Dunes, MI
Originally Posted by powerstroked162
wait til you hit 35lbs of boost on a stock turbo. that'll make your butthole pucker up and the aftermath is so rewarding cause you finally have a reason to tell the wife and justify as to why you need an aftermarket turbo. lolBeer!
Cowboy Steve
Beer!Cowboy Steve
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Senior User
Joined: May 2003
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From: Marquette, MI
I have an autometer phantom boost gauge and when going down the highway it reads 0 - 1 psi. On moderate acceleration it hits about 5 and when im stepping on the gas hard it can get up around 15 - 20. I have a chip, exhaust, and intake so I'm kind of thinking my gauge is messed up. I got it used and im not convinced its working correctly. Anyone know why it could be reading so low? I checked all the lines and it looks good.
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Posting Guru
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From: Braham MN
Originally Posted by jnye6625
I have an autometer phantom boost gauge and when going down the highway it reads 0 - 1 psi. On moderate acceleration it hits about 5 and when im stepping on the gas hard it can get up around 15 - 20. I have a chip, exhaust, and intake so I'm kind of thinking my gauge is messed up. I got it used and im not convinced its working correctly. Anyone know why it could be reading so low? I checked all the lines and it looks good.
high end is the same, over winter when it was -20º I could hit 25 psi, now that it is 50º and my filter is getting dirty 22psi is tough to do.
Diesel Rod
Junior User
Joined: Nov 2003
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Originally Posted by jnye6625
I have an autometer phantom boost gauge and when going down the highway it reads 0 - 1 psi. On moderate acceleration it hits about 5 and when im stepping on the gas hard it can get up around 15 - 20. I have a chip, exhaust, and intake so I'm kind of thinking my gauge is messed up. I got it used and im not convinced its working correctly. Anyone know why it could be reading so low? I checked all the lines and it looks good.
Senior User
Joined: May 2003
Posts: 265
Likes: 0
From: Marquette, MI
I am almost positive that my nylon line is not kicked or pinched. I check it over and it has a very nice easy path and big radius turns. I might move my boost gauge "T" closer to the manifold and see if that helps. Would a larger diameter boost gauge line work? I am using the nylon line that you get at the parts store for oil pressure gauges. I guess the best test would be to plumb the boost gauge right to the air compressor and see what it does then.