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Fuel Pressure

Started by ydennek, Aug 23 2009 01:53 PM

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2 replies to this topic

#1
ydennek

Posted 23 August 2009 - 01:53 PM

Kennedy

Group: Members

Location:Gainesville, FL
Drives: 1987 Honda CRX DX

I need to know how much fuel pressure there is for my 1987 Honda CRX DX Carbureted engine. I am trying to fine tune my Webber 32/36. Thanks.

1987 Honda CRX DX

#2
kaymo

Posted 23 August 2009 - 01:55 PM

Mr.Ididntseeyousittingthereofficer

Group: 2009 Contributing Member

Location:Hickory, North Carolina
Drives: 74'vert Blazer, 84redrexHF (RIP), 87blackrexSI, 91STDhatch(resurrected for beater)(RIP again)

factory pump i believe is 3-5 psi? that number may be high...

i have heard with non-factory carbs that a fuel pressure regulator works well for delivering the aftermarket carb exactly the fuel it wants, not what your factory pump and bypass puts out

QUOTE (kjeffery @ Apr 17 2009, 06:17 PM) <{POST_SNAPBACK}>

Yet again Scott, you have all the answers

QUOTE (cbstdscott @ Apr 17 2009, 07:31 PM) <{POST_SNAPBACK}>

No. All the answers are in the Kakabox build thread.

QUOTE (Lymitliss @ May 26 2009, 08:06 PM) <{POST_SNAPBACK}>

Ohh yeah I guess that makes sense. King Kaymo has all the answers :lol:

#3
OG Wagon

Posted 23 August 2009 - 11:13 PM

Leadfoot

Group: 2009 Contributing Member

Location:Mooresville, NC
Drives: 1986 Crx Si

You have a cam-driven fuel pump. It averages around 3 psi, I believe. Unfortunately, this flunctuates ever so slightly with engine RPM. However, most folks have reported having no problems tuning the 32/36 Webers on our stock fuel set-up. You should not even need to worry about a regulator, though I'm sure that it couldn't hurt to install one. But, not totally necessary. Try it without a reg. first, and then see where your at. You should be fine. Best of luck!