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| Allante or Cadillac 4.9 adjustable fuel pressure regulator? (Page 2/2) |
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fieroguru
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JAN 10, 09:48 PM
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| quote | Originally posted by Will:
Is the Allante unit different than the PFI 4.9? |
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Yes. ACDELCO 2173052
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Johns 4.9
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JAN 10, 11:26 PM
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Unfortunately, that isn't the Allante regulator. Much different, not even close. Here is a pic of the Allante regulator.
Cheers
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Spadesluck
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JAN 11, 12:48 AM
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| quote | Originally posted by fieroguru:
Yes. ACDELCO 2173052
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That is the exact problem I had trying to source a regulator a while back. The pictured regulator is not what is on the Allante rail but all part numbers point like it is.[This message has been edited by Spadesluck (edited 01-11-2021).]
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Johns 4.9
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JAN 11, 02:10 PM
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This is what I am working on for the Allante adjustable regulator.
 Cheers
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Johns 4.9
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JAN 18, 08:53 PM
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This is what I have come up with for an adjustable fuel pressure regulator for the Allante 4.5 engine. I will test in the next couple of days.
Cheers
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Will
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JAN 18, 09:56 PM
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What do you have on the inlet? Compression fitting on the factory tubing? or Bundy adapter?
For the inlet, have you thought about making a fitting that would plug into the fuel rail, but then just have female 1/4" pipe threads? It could be turned in a single setup on a lathe, then oriented the direction the added fitting would need to go.
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