Jump to content

How much boost?


GOOG

Recommended Posts

My 1993 400 only makes 15 lbs of boost. That seems low to me. I have other (newer) trucks that make 35. I checked for leaks in the cooler, had none. Does anybody know what the boost should be? The truck does seem a little down on power.

Link to comment
Share on other sites

My Electronic 95 350 makes 20 lbs boost. My 97 427's make 28-33 lbs of boost.

I thought 20 was low too but it is the specs of Mack and it pulls great. Service manager gave me the specs as we thought we had issues as well.

Gauges arent all they are cracked up to be either, I'd check gauge and see what specs are before trying anything else.

Link to comment
Share on other sites

Might be a stupid question but to each his own.

What psi boost E6-350 should have when bobtailing?

Sure no load but with a full throttle at a midlle rev range it never takes more that 8 psi.

Generally in a flat road I see from 0 to 3.

Никогда не бывает слишком много грузовиков! leversole 11.2012

Link to comment
Share on other sites

  • 1 month later...

That would be about right

Brand new 631GC5117 turbo as per Mack specs

All systems good

Pulling tri axle trailer and grossing 41000 kg. / 90000 lb ?

On a continued pull I get 28-29 psi

And surprise a lot of new trucks when I pull past them

And still get 2.47 km per litre

Iam happy with that

  • Like 2
Link to comment
Share on other sites

The most I can get out of mine is 18-20

Sent from my iPhone using Tapatalk

I was wrong.

My E6-350 makes up to 8-10 on a flat bobtailing.

Recently I put a full throttle uphill on the top gear doing 50 MPH and saw 20 pci of boost.

Никогда не бывает слишком много грузовиков! leversole 11.2012

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...