Construction and other equipment

Print Page | Close Window

boost pressure

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=203672
Printed Date: 16 Oct 2024 at 5:25am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: boost pressure

Posted By: Larry O F
Subject: boost pressure
Date Posted: 15 Oct 2024 at 3:17pm

Can anyone tell me what the boost pressure on a 1972 7GB track loader with an Allison 6-cylinder turbo charged engine should be?

Replies:

Posted By: DrAllis
Date Posted: 15 Oct 2024 at 7:30pm

It's not an ALLISON engine. It's an Allis-Chalmers engine. I assume it is a 3500 series engine ?? There's a metal tag on the left side of the engine block. I would expect a max turbocharger/intake manifold boost of 10 or 11 psi at full throttle under a good load.

Posted By: HD6 Merv
Date Posted: 15 Oct 2024 at 10:47pm

DrAllis wrote:

It's not an ALLISON engine. It's an Allis-Chalmers engine. I assume it is a 3500 series engine ?? There's a metal tag on the left side of the engine block. I would expect a max turbocharger/intake manifold boost of 10 or 11 psi at full throttle under a good load.

Hi Dr Allis what would boost be for following 3, 11000 HD11 engines

1 HD11EP Bosch PSB fuel pump, TO6 turbo

2 HD11EP Roosa pump, TO4 turbo

3 HD11 series B; Robert Bosch inline pump, TO4 turbo.

Full load is 'around' torque converter stall speed on these engines; all powershift models'

Curious what boost would be for them

Thanks Merv.

-------------
tits tyres and tracks

they all cost you money