Performance of my baby is very disappointing
Thread Starter
#!/sup_mod/üb3rg33k
Joined: Sep 2001
Posts: 96
Likes: 0
From: Kansas City
Performance of my baby is very disappointing
Okay where to start.
I was doing some test running on my car ('83 GSL) and I'm having some problems with hard accelaration. As soon as it's rev'ed at 4k it sputters like hell and loses power. As we all know the RX-7 love the power band on the high end.
It doesn't help if I can't get there. There is also the little thing of my pump which can't seem to give my 6psi witch is needed. It currently gives me, 5.9psi. The pump is rated to produce 7 psi. I've messed with the carb several times, just can't get any results. Any suggestions would be nice. 
This is my set up.
-RB Intake
-RB modded Holley Carb
-No emissions (air pump, rats nest, and anyother thing)
-Custom striaght piped exhaust
-Black magic electric fan
-2nd Gen Oil cooler mod
-Holley Fuel Regulator info
-Holley Fuel Pressure Gauge
-Carter Fuel pump info
I was doing some test running on my car ('83 GSL) and I'm having some problems with hard accelaration. As soon as it's rev'ed at 4k it sputters like hell and loses power. As we all know the RX-7 love the power band on the high end.
It doesn't help if I can't get there. There is also the little thing of my pump which can't seem to give my 6psi witch is needed. It currently gives me, 5.9psi. The pump is rated to produce 7 psi. I've messed with the carb several times, just can't get any results. Any suggestions would be nice. This is my set up.
-RB Intake
-RB modded Holley Carb
-No emissions (air pump, rats nest, and anyother thing)
-Custom striaght piped exhaust
-Black magic electric fan
-2nd Gen Oil cooler mod
-Holley Fuel Regulator info
-Holley Fuel Pressure Gauge
-Carter Fuel pump info
Last edited by error402; Aug 25, 2002 at 03:04 PM.
Hunting Skylines
Joined: Apr 2001
Posts: 3,431
Likes: 4
From: Brisbane, Queensland, Australia.
I used to have one of those Holley pressure guages and it was very inaccurate... as are most of the automotive FP guages available. The VDO gauge I have now is pretty good though.
Thread Starter
#!/sup_mod/üb3rg33k
Joined: Sep 2001
Posts: 96
Likes: 0
From: Kansas City
Originally posted by REVHED
I used to have one of those Holley pressure guages and it was very inaccurate... as are most of the automotive FP guages available. The VDO gauge I have now is pretty good though.
I used to have one of those Holley pressure guages and it was very inaccurate... as are most of the automotive FP guages available. The VDO gauge I have now is pretty good though.
Where did you get yours at?
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does it sputter without load as well? are you pushing out some blackish smoke and popping like hell?
i agree with the gauge being inaccurate, i have one of those Holley (look-pretty-but-ain't-worth-a-damn) gauges ... mine's about a pound or so off ... so yeah, i think you might be rich. try dialing in lower pressure, like directfreak said.
BTW, i don't think a missing tenth of a pound would do that
the only thing is i'm thinking you should experience the break-up/power loss at little higher than 4K RPM ... but i may stand corrected.
i agree with the gauge being inaccurate, i have one of those Holley (look-pretty-but-ain't-worth-a-damn) gauges ... mine's about a pound or so off ... so yeah, i think you might be rich. try dialing in lower pressure, like directfreak said.
BTW, i don't think a missing tenth of a pound would do that
the only thing is i'm thinking you should experience the break-up/power loss at little higher than 4K RPM ... but i may stand corrected.
Last edited by diabolical1; Aug 25, 2002 at 07:33 PM.
Thread Starter
#!/sup_mod/üb3rg33k
Joined: Sep 2001
Posts: 96
Likes: 0
From: Kansas City
Originally posted by Directfreak
I am not sure, maybe Sterling, Revhead or PJ could confirm, but that sounds like Too Much pressure to begin with.
Try dialing it lower and testing your results.
I am not sure, maybe Sterling, Revhead or PJ could confirm, but that sounds like Too Much pressure to begin with.
Try dialing it lower and testing your results.
Yeah, peejay hasn't been online, so I haven't been able to throw the question his way.
Thread Starter
#!/sup_mod/üb3rg33k
Joined: Sep 2001
Posts: 96
Likes: 0
From: Kansas City
Originally posted by diabolical1
does it sputter without load as well? are you pushing out some blackish smoke and popping like hell?
i agree with the gauge being inaccurate, i have one of those Holley (look-pretty-but-ain't-worth-a-damn) gauges ... mine's about a pound or so off ... so yeah, i think you might be rich. try dialing in lower pressure, like directfreak said.
BTW, i don't think a missing tenth of a pound would do that
the only thing is i'm thinking you should experience the break-up/power loss at little higher than 4K RPM ... but i may stand corrected.
does it sputter without load as well? are you pushing out some blackish smoke and popping like hell?
i agree with the gauge being inaccurate, i have one of those Holley (look-pretty-but-ain't-worth-a-damn) gauges ... mine's about a pound or so off ... so yeah, i think you might be rich. try dialing in lower pressure, like directfreak said.
BTW, i don't think a missing tenth of a pound would do that
the only thing is i'm thinking you should experience the break-up/power loss at little higher than 4K RPM ... but i may stand corrected.
In any case... It started smoking at idle when i messed with the carb, because i thought i was leaning out the system, but I will try to reduce the pressure and lower the fuel.
Thanks guys I will let you know what the results are.
Thread Starter
#!/sup_mod/üb3rg33k
Joined: Sep 2001
Posts: 96
Likes: 0
From: Kansas City
Originally posted by RiceRocket
it is the head light cleaner over ride switch! sorry man, i coudln;t help myself
it is the head light cleaner over ride switch! sorry man, i coudln;t help myself
Thanks RiceRocket.
EliteHardcoreCannuckSquad
Joined: Apr 2001
Posts: 2,266
Likes: 0
From: Ontario, Canada
Those guages are worthless.. at least the 2 different brands that I've tried. Set your fuel pressure by trial and error; crank it till you start flooding out, turn it down some, then go for a drive. Experiment that way, spend some time driving the car, and you'll get it dialed.
That said, to me it sounds like an ignition or carb problem. Not very specific lol. Of course change your fuel filter to start though.
That said, to me it sounds like an ignition or carb problem. Not very specific lol. Of course change your fuel filter to start though.
Originally posted by Manntis
The funny thing is, my ReX DOES have headlight cleaners, and if you push the headlights up switch in the opposite direction it overrides and cleans the headlight faces...
The funny thing is, my ReX DOES have headlight cleaners, and if you push the headlights up switch in the opposite direction it overrides and cleans the headlight faces...
Last edited by Directfreak; Aug 25, 2002 at 08:48 PM.
