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boost pressure
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Larry O F View Drop Down
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Joined: 19 Jul 2021
Location: Denver CO
Points: 33 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Larry O F Quote  Post ReplyReply Direct Link To This Post Topic: boost pressure
    Posted: 16 hours 2 minutes ago 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?
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 20308 		Post Options Post Options   Thanks (1) Thanks(1)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 11 hours 49 minutes ago 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.
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HD6 Merv View Drop Down
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Joined: 03 Aug 2010
Location: New Zealand
Points: 479 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HD6 Merv Quote  Post ReplyReply Direct Link To This Post Posted: 8 hours 32 minutes ago at 10:47pm
Originally posted by DrAllis 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
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