SURGING Six Pack carbs
#310136
05/06/09 05:15 PM
05/06/09 05:15 PM
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Joined: Jan 2003
Posts: 11,855 Georgetown Ontario Canada
anlauto
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 11,855
Georgetown Ontario Canada
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I've got a set of new six pack carbs from Mopar Performance.
While driving under normal circumstances they constantly surge and surge.... I've checked for vacuum leaks and set the outboards to make sure they're shut completly, but now I'm at a loss...
Any ideas? Suggestions?
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Re: SURGING Six Pack carbs
[Re: anlauto]
#310137
05/06/09 05:25 PM
05/06/09 05:25 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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there have been some comprehensive threads on 6 pack tuning. You might see if it can be retrieved. bump up your center carb jets 4 sizes & try it.
live every 24 hour block of time like it's your last day on earth
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Re: SURGING Six Pack carbs
[Re: Challenger 1]
#310139
05/06/09 06:33 PM
05/06/09 06:33 PM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Usally means lean.
yup. 1st thing I did w. my new set-up was drop some 64's in. Haven't driven it yet. trying to get the brakes set-up.
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Re: SURGING Six Pack carbs
[Re: PHJ426]
#310143
05/26/14 01:04 AM
05/26/14 01:04 AM
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Joined: Jul 2007
Posts: 11,836 Florida
mopar346
Let me tell ya about fat chicks!
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Let me tell ya about fat chicks!
Joined: Jul 2007
Posts: 11,836
Florida
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Thank you, I have an earlier version from him but it is always a good read. It does not however mention anything about surging and even though it would not hurt them or me to go back to square one and tune them by his standards they seem to run great, I have had an occasional hot start issue but minor and it will occasionally try to load up at idle. So while I am typing I am talking myself into going through the set up process from Tom. Thanks for adding to my work load I have to leave in 12 days!
Careful, your character's showing!
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Re: SURGING Six Pack carbs
[Re: mopar346]
#310145
05/26/14 04:07 AM
05/26/14 04:07 AM
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Joined: Aug 2003
Posts: 43,719 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,719
Bend,OR USA
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I did a set of OEM 340 AAR Cuda carbs years ago, it was very sensitive to the center carb. jets, one size up or own made it not drive well I didn't look up the carb. # you posted, if it is a original, not a replacement carb with a -1 or -2 to the right of the list number then try looking on Holley web site for the original jetting and start with that, don't forget to use the proper power vave, especially with that dang Mopar 284 camshaft Good luck, I agree with the others on the surging, one step, one Holley # richer jet, not 4 should eliminate the surging Let us know what you do and the results please.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: SURGING Six Pack carbs
[Re: ThermoQuad]
#310147
05/26/14 10:50 AM
05/26/14 10:50 AM
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Joined: Jul 2007
Posts: 11,836 Florida
mopar346
Let me tell ya about fat chicks!
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Let me tell ya about fat chicks!
Joined: Jul 2007
Posts: 11,836
Florida
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Thanks folks, I will make some changes over the next few days and post my results.
Tom, I have them saved to my computer and the above link takes you to it but thank you for your input.
Careful, your character's showing!
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Re: SURGING Six Pack carbs
[Re: ThermoQuad]
#310148
05/26/14 11:08 AM
05/26/14 11:08 AM
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Joined: Apr 2010
Posts: 4,154 bethlehem pa
mikemee1331
master
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master
Joined: Apr 2010
Posts: 4,154
bethlehem pa
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Quote:
thermostat 195
this right here is probably the single most overlooked and ignored step in the whole guide but it does make a difference....
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Re: SURGING Six Pack carbs
[Re: mikemee1331]
#310149
05/26/14 12:58 PM
05/26/14 12:58 PM
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Joined: Sep 2004
Posts: 6,906 IL, Aurora
ademon
master
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master
Joined: Sep 2004
Posts: 6,906
IL, Aurora
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Quote:
Quote:
thermostat 195
this right here is probably the single most overlooked and ignored step in the whole guide but it does make a difference....
what does it do.
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Re: SURGING Six Pack carbs
[Re: ademon]
#310153
05/26/14 03:09 PM
05/26/14 03:09 PM
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Joined: Apr 2005
Posts: 12,271 Overpriced Housing Central
RobX4406
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
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Quote:
Quote:
Quote:
thermostat 195
this right here is probably the single most overlooked and ignored step in the whole guide but it does make a difference....
what does it do.
The 340 6 pack intake has an issue with fuel puddling. Colder the intake, the worse the issue.
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Re: SURGING Six Pack carbs
[Re: ademon]
#310154
05/26/14 03:13 PM
05/26/14 03:13 PM
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Joined: Apr 2010
Posts: 4,154 bethlehem pa
mikemee1331
master
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master
Joined: Apr 2010
Posts: 4,154
bethlehem pa
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Quote:
Quote:
Quote:
thermostat 195
this right here is probably the single most overlooked and ignored step in the whole guide but it does make a difference....
what does it do.
answered above! engine is hotter, fuel doesn't puddle
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Re: SURGING Six Pack carbs
[Re: anlauto]
#310155
05/26/14 04:11 PM
05/26/14 04:11 PM
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Joined: Jan 2003
Posts: 14,471 renton, Washington
ph23vo
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,471
renton, Washington
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Quote:
I've got a set of new six pack carbs from Mopar Performance.
While driving under normal circumstances they constantly surge and surge.... I've checked for vacuum leaks and set the outboards to make sure they're shut completly, but now I'm at a loss...
Any ideas? Suggestions?
before DOING ANYTHING unplug the vacuum advance... [plug hose] and drive to see if it cures it..
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