4.3L engine swap fuel problem - JeepForum.com

 
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post #1 of 5 Old 08-19-2013, 09:42 PM Thread Starter
Sgondola
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4.3L engine swap fuel problem

I have a GM 4.3L TBI with a fuel pressure regulator inside the TBI unit and want to know if I need to regulate the fuel coming out of the fuel pump into the TBI unit? If so, where would the regulator go, before or after the TBI unit?

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post #2 of 5 Old 08-19-2013, 10:16 PM
Holder350
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Well.....that depends....what kind of jeep is it going into??

GM TBI system only runs at like 15psi most 4.0 systems put out about 50psi.

I dare say if you hook it up without a regulator your likely to blow the internal TBI regulator.

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post #3 of 5 Old 08-19-2013, 10:31 PM Thread Starter
Sgondola
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If I need an inline fuel regulator, does it go between the fuel pump and the TBI unit?
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post #4 of 5 Old 08-19-2013, 11:17 PM
Holder350
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Yes. It needs to bring the pressure down to a manageable level for the TBI unit.

Sent from my phone

95' XJ Country - Stock Skids - D30/D35 Limited Slip - 3" Lift - 31x10.50R15 - 4.0 HO - AX15 - NP231

98' XJ Classic - D30/C8.25 - 4.5" RC Lift - 33x12.50R15 - 4.0 HO - AW4 - NP231
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You can tell the character of a person in how they treat someone who can do nothing for them.
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post #5 of 5 Old 08-20-2013, 06:19 AM Thread Starter
Sgondola
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Thanks!
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