Bracket Talk
Alky carb/Gas carb swap
February 17, 2022, 06:39 AM
Mike FrizieAlky carb/Gas carb swap
Other than draining the tank, if you have belt drive fuel system with a return style regulator set to x lbs of fuel pressure on alky, and wanted to swap carbs to compare , what other changes if any would you have to make? I.E. max fuel pressure etc.
Michael Frizie
ET 2471
February 17, 2022, 09:37 AM
LAKEFECTremove foam from cell, use correct fuel filter and get a lean out valve.get it up to 180* before you park it for the day.
February 17, 2022, 10:08 AM
Mike FrizieMy bad. Should've specified i'm already running methanol. thinking of trying a gas carb in the future. Pressure is pressure right?
Michael Frizie
ET 2471
February 17, 2022, 10:37 AM
CURTIS REEDYou would need to change to a finer element in your fuel filter. I have different elements for the same filter I swap out.
____________________________
2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion
2018 Div4 Goodguys Hammer award winner
February 17, 2022, 10:58 AM
NC3x58quote:
Originally posted by CURTIS REED:
You would need to change to a finer element in your fuel filter. I have different elements for the same filter I swap out.
If you are just trying it for a day, is it worth changing the filter? If you planned on leaving it on for a long weekend or a few weeks then sure, change it out.. But for one day, i.e. a few passes leave it alone I would say and drop the fuel pressure down to 7-8psi with the regulator and let it rip.
Nick Craig
1971 Camaro Split Bumper
376ci LS3
February 17, 2022, 10:59 AM
CashflowI run the same setup filter wise. I have the big Ron’s filter. Works for me.
Clowns to the left of me, Jokers to the right. Here I am.......
February 17, 2022, 11:13 AM
CURTIS REEDquote:
Originally posted by NC3x58:
quote:
Originally posted by CURTIS REED:
You would need to change to a finer element in your fuel filter. I have different elements for the same filter I swap out.
If you are just trying it for a day, is it worth changing the filter? If you planned on leaving it on for a long weekend or a few weeks then sure, change it out.. But for one day, i.e. a few passes leave it alone I would say and drop the fuel pressure down to 7-8psi with the regulator and let it rip.
Nope. Didn't realize it was just for a day. Good call.
____________________________
2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion
2018 Div4 Goodguys Hammer award winner
February 17, 2022, 12:02 PM
TOP38quote:
Originally posted by NC3x58:
quote:
Originally posted by CURTIS REED:
You would need to change to a finer element in your fuel filter. I have different elements for the same filter I swap out.
If you are just trying it for a day, is it worth changing the filter? If you planned on leaving it on for a long weekend or a few weeks then sure, change it out.. But for one day, i.e. a few passes leave it alone I would say and drop the fuel pressure down to 7-8psi with the regulator and let it rip.
Too much fuel pressure, looking for 6 or so at WOT. If you need more than this you have issues or the wrong needle & seat in the bowls.
February 17, 2022, 12:20 PM
CURTIS REEDI only run 6lbs on alcohol. But it seems fuel pressure is something that is all over the map for people.
____________________________
2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion
2018 Div4 Goodguys Hammer award winner
February 17, 2022, 01:13 PM
1320racerquote:
Originally posted by TOP38:
Too much fuel pressure, looking for 6 or so at WOT. If you need more than this you have issues or the wrong needle & seat in the bowls.
this^^^
February 17, 2022, 02:41 PM
Paul S/Qquote:
Originally posted by 1320racer:
quote:
Originally posted by TOP38:
Too much fuel pressure, looking for 6 or so at WOT. If you need more than this you have issues or the wrong needle & seat in the bowls.
this^^^
I agree 100% .... 5.5-6.0 PSI is plenty , which means less fuel aeration as well
February 17, 2022, 08:15 PM
teamI would be concerned about your system having enough bypass capability. You are switching to gas which will use approx. half as much fuel. Can your bypass system handle twice the amount of fuel?
February 17, 2022, 09:24 PM
diceman1530You may want to add some timing to get a better result.
Working for the Weekend!!!!
Fordyce Motorsports
February 18, 2022, 06:49 AM
NC3x58quote:
Originally posted by diceman1530:
You may want to add some timing to get a better result.
Forgot about this, timing could be slightly different or could be similar to alky setup, definitely want to play with it though.
Where do you have your timing set at currently?
Nick Craig
1971 Camaro Split Bumper
376ci LS3
February 18, 2022, 06:56 AM
undacuva67adjust the psi and send it btdt
February 18, 2022, 09:32 AM
Mike Friziequote:
Originally posted by NC3x58:
quote:
Originally posted by diceman1530:
You may want to add some timing to get a better result.
Forgot about this, timing could be slightly different or could be similar to alky setup, definitely want to play with it though.
Where do you have your timing set at currently?
34
Michael Frizie
ET 2471
February 18, 2022, 09:32 AM
Bob DenikerSome of you guys run fuel filters ??
February 18, 2022, 09:33 AM
Mike Friziequote:
Originally posted by Bob Deniker:
Some of you guys run fuel filters ??
whats that?
Michael Frizie
ET 2471
February 18, 2022, 11:18 AM
rustyall things equal it will run the same on both in cool and and faster on alky in heat just my rwo cents
honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224
February 18, 2022, 11:37 AM
Phil DeesGas to methanol, I had to use a different spark plug.