Re: 500 CI RB SIX PACK HELP
[Re: Cab_Burge]
#1792802
04/04/15 05:06 AM
04/04/15 05:06 AM
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Joined: May 2005
Posts: 6,446 NJ-USA
HPMike
master
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master
Joined: May 2005
Posts: 6,446
NJ-USA
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Quote:
Quote:
. Then shut the car off and hook up the outboards. have somebody get in the car and floor it. Make sure all 3 are wide open.
I've never seen any vacume actuated six pak open when in nuetral at WOT, with the motor running or not OP, sixpaks will barely start to open the outboards when hitting the throttle to wide open, by the time the motor builds up enough manifold CFM flow to actuate the vacume secondary pods the motor will be revved way higher than you want to hear
What I think he means is to verify that the outboards have the capability to open fully with the engine off...I do this as well, although, unless you have a mech setup, you would have to pull the linkage open manually to do this..
-70 is too much jet on the center.... -Make sure float level is set... -Must trim the idle circuit on the outboards...Biggest mistake people make on these when they cant get them to idle properly.. -use the outboard jet plates-no one is that lucky drilling out the stockers.. -NO WAY are the yellow springs going to work...Prob fall flat on its face and then struggle to regain..Go brown or purple...Ive even modified them for further stiffness.. -As delivered accel pump usually fine on a stroker..Never saw any benefit to the bigger pump...usually worse.. -Play with different pump cams to dial in the fuel delivery progression to the outboards.. -Even though its mostly for the resto guys, Use an idle solenoid to prevent dieseling,especially when running pump gas..
These setups work great on strokers..Bear this in mind folks...The carbs on the FAST 6 pack A12 cars I built(the red stick car and the black auto) are all just jetted, outboard springs and pump cams from being right out of the box..We had one of the brightest carb guys in the country make a set of really tricked out 2300''s...No matter what we did, they werent better than the ones that were on them...Dont over think this...
MB
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Re: 500 CI RB SIX PACK HELP
[Re: 69 plymouth rnr]
#1792803
04/04/15 10:40 AM
04/04/15 10:40 AM
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Joined: Jul 2003
Posts: 4,774 Holland MI Ottawa
2boltmain
master
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master
Joined: Jul 2003
Posts: 4,774
Holland MI Ottawa
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"i also hear people talk about pro max but one gentelman I know had problems with the floats hitting their plates?"
Maybe on a plastic float the parting line "Flash" can be sanded down?
Keep old mopars alive.
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Re: 500 CI RB SIX PACK HELP
[Re: 2boltmain]
#1792806
04/04/15 01:46 PM
04/04/15 01:46 PM
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Joined: May 2005
Posts: 6,446 NJ-USA
HPMike
master
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master
Joined: May 2005
Posts: 6,446
NJ-USA
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Quote:
"i also hear people talk about pro max but one gentelman I know had problems with the floats hitting their plates?"
Maybe on a plastic float the parting line "Flash" can be sanded down?
I use a razor blade...Takes less than a minute...Just take down the parting line of the mold...
MB
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Re: 500 CI RB SIX PACK HELP
[Re: HPMike]
#1792807
04/05/15 01:04 AM
04/05/15 01:04 AM
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Joined: Oct 2003
Posts: 2,403 WASHINGTON, PA
11secaarcuda
top fuel
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top fuel
Joined: Oct 2003
Posts: 2,403
WASHINGTON, PA
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Nick, what do your spark plugs look like after trying to get it to run? Were you able to get a timing light on it yet? Mike
67 Dart GT 340 4 speed 70 AAR Cuda 408 6 barrel 96 Indy Ram original owner 2011 Hemi Durango
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Re: 500 CI RB SIX PACK HELP
[Re: 69 plymouth rnr]
#1799248
04/09/15 11:09 AM
04/09/15 11:09 AM
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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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Thanks <img src="/ubbthreads/images/graemlins/thumbs.gif" alt="" />, what is your combo ?? <img src="/ubbthreads/images/graemlins/beer.gif" alt="" /> Stock stroke .030 11.2:1 440, ported stage VI heads, totally stock intake and carbs, 588 solid roller cam, 2" hookers, 3800 Turbo Action convert, RMVB 727, 3.91's. I guess I need to step down because I run 70 center jets...hahaha
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Re: 500 CI RB SIX PACK HELP
[Re: 69 plymouth rnr]
#1799461
04/09/15 03:39 PM
04/09/15 03:39 PM
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Joined: Aug 2003
Posts: 43,204 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,204
Bend,OR USA
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HEY GUYS, THANKS !!! Her is what I did and what happened so far...Quick fuel jet plates and metering block 70 in the center front 84 choke side and 88 throttle Rear 88 choke and 90 throttle blue cam...2.5 power valve stock 30 cc pump... air fuel mix is 1 1/2 to 1 3/4 turns Fires up runs idles got it warm and did hole shots in driveway No stumble No stall !!!! Im close Need to check timing and vacume . Thanks NICK I've ran a bunch of different sixpaks on a lot of different motors, on your deal I would check the vacume idling with the motor warmed up in gear and then use a power valve one to two inches lower than that. The reason I'm suggesting that is I had a sixpak on my 518 C.i. low deck pump gas stroker motor with a big solid roller cam in it that I had a 2.5 power valve in the center carb., I swapped the motor out(reuse the same carbs on both motors) to a smaller 464 C.I. RB motor with a smaller hydraulic cam and found out that the 2.5 power valve would start to close and reopen in high gear in the 1/4 mile, NOT GOOD! I put either a 4.5 or a 5.5 ,(CRS)power valve in it and that cured the problem in high gear. IHTHs
Last edited by Cab_Burge; 04/09/15 03:40 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 500 CI RB SIX PACK HELP
[Re: 69 plymouth rnr]
#1800033
04/10/15 03:12 AM
04/10/15 03:12 AM
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Joined: Oct 2006
Posts: 427 Sweden
Mopar Guy
mopar
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mopar
Joined: Oct 2006
Posts: 427
Sweden
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My experience is that the stock center carbs is kind of a restriktion on a large engine like a 500 cube lung ! I ended up whit a set of BG that flow equal on al 3 carbs and that work´t better for me aand one realy nice benefit is that the outer carbs have acc pumps and they are side hung float carbs whit lose jets on al carbs same as the old back in the days Direct Connetion sold 82&83 carbs that also outpreform the stock carbs if they are tuned corekt.
Last edited by Mopar Guy; 04/11/15 02:19 PM.
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