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Re: Hemi stumble/sputter on starting line ???
[Re: cudaman1969]
#1493495
09/05/13 06:24 PM
09/05/13 06:24 PM
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Joined: Feb 2012
Posts: 54
Strongsville, Ohio
Charlie Moore
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Posts: 54
Strongsville, Ohio
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Quote:
Are you running a crank trigger? MSD dist. ? timing locked in at say 35 degrees? I don't think anything is wrong with engine if it runs. Just don't give up, things will work out. We have all been there.
I'm running an MSD trigger and MSD distributor. I can unplug the trigger and plug into distributor and nothing changes. Timing is locked at 31 degrees right now.
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Re: Hemi stumble/sputter on starting line ???
[Re: Charlie Moore]
#1493496
09/05/13 06:41 PM
09/05/13 06:41 PM
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Joined: Jan 2004
Posts: 8,256
fredericksburg,va
cudaman1969
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fredericksburg,va
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Quote:
Quote:
Are you running a crank trigger? MSD dist. ? timing locked in at say 35 degrees? I don't think anything is wrong with engine if it runs. Just don't give up, things will work out. We have all been there.
I'm running an MSD trigger and MSD distributor. I can unplug the trigger and plug into distributor and nothing changes. Timing is locked at 31 degrees right now.
I was leaning toward rotor out of phase but your heat clue might be the line to follow. Coil (what type) or MSD box could be fine till they warm up. Heat affects wires also, plug and power wires. What size jets in the carbs, could be way to rich after warm
up, kinda like a stuck choke. Where the carbs ever run on another car?
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Re: Hemi stumble/sputter on starting line ???
[Re: cudaman1969]
#1493498
09/05/13 09:08 PM
09/05/13 09:08 PM
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Joined: Feb 2012
Posts: 54
Strongsville, Ohio
Charlie Moore
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Posts: 54
Strongsville, Ohio
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Quote:
Quote:
Quote:
Are you running a crank trigger? MSD dist. ? timing locked in at say 35 degrees? I don't think anything is wrong with engine if it runs. Just don't give up, things will work out. We have all been there.
I'm running an MSD trigger and MSD distributor. I can unplug the trigger and plug into distributor and nothing changes. Timing is locked at 31 degrees right now.
I was leaning toward rotor out of phase but your heat clue might be the line to follow. Coil (what type) or MSD box could be fine till they warm up. Heat affects wires also, plug and power wires. What size jets in the carbs, could be way to rich after warm
up, kinda like a stuck choke. Where the carbs ever run on another car?
Coil is a new MSD pro power coil. Ignition wires were replaced, tried 3 different spark plugs. Right now it has 84 and 85 jets. Maybe a bit rich but I wouldn't think it would cause a sneeze back thru the carbs. These carbs were on this car when I bought it in January of 2012.
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Re: Hemi stumble/sputter on starting line ???
[Re: Dodgem]
#1493500
09/05/13 10:39 PM
09/05/13 10:39 PM
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Joined: Feb 2012
Posts: 54
Strongsville, Ohio
Charlie Moore
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Quote:
you did not say what springs you tried to tailor the secondary opening rate too fast is bad!
http://www.summitracing.com/parts/hly-20-13
secondaries that open too fast cause a momentary lean condition which can cause issues like a bog and Pufft!
Dale Cubic had us restrict the secondaries from opening. We actually put accelerator pump springs in so the secondaries would not open. It did not change anything. We have tried several different springs and currently have the strongest spring in right now.
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Re: Hemi stumble/sputter on starting line ???
[Re: Charlie Moore]
#1493501
09/05/13 11:38 PM
09/05/13 11:38 PM
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Joined: Jul 2003
Posts: 12,129
Cleveland
sunroofgtx
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Cleveland
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Charlie, do you have the 8mm or 8.5 wires on it? Did the 8.5's fit better?
Join the quickest team in motorsports. Team FireCore. CustomWiresets.com
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Re: Hemi stumble/sputter on starting line ???
[Re: sunroofgtx]
#1493503
09/06/13 07:42 AM
09/06/13 07:42 AM
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Joined: Feb 2012
Posts: 54
Strongsville, Ohio
Charlie Moore
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Quote:
Charlie, do you have the 8mm or 8.5 wires on it? Did the 8.5's fit better?
I tried the 8.5 wires and nothing changed. I plan on bringing them back to you in a few days. I was also hoping you might have a stock dust boot as I have torn one taking the wires off and on so many times.
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Re: Hemi stumble/sputter on starting line ???
[Re: 52savoy]
#1493505
09/07/13 05:53 AM
09/07/13 05:53 AM
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Joined: Jan 2003
Posts: 32,394
Quicktree
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Quote:
Have you thought about seeing how it behaves with a single four intake or street Hemi?
That would tell a lot.
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Re: Hemi stumble/sputter on starting line ???
[Re: 52savoy]
#1493506
09/07/13 07:24 AM
09/07/13 07:24 AM
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Joined: Feb 2012
Posts: 54
Strongsville, Ohio
Charlie Moore
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Quote:
Have you thought about seeing how it behaves with a single four intake or street Hemi?
That would tell a lot.
Definitely thought of that, but I don't know anyone with a single 4 bbl intake manifold that I could try. And honestly right now I can't afford to purchase one. I could come up with a carb pretty easy.
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Re: Hemi stumble/sputter on starting line ???
[Re: Charlie Moore]
#1493507
09/07/13 10:13 AM
09/07/13 10:13 AM
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Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing
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Eighty Four, PA
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Quote:
Quote:
Have you thought about seeing how it behaves with a single four intake or street Hemi?
That would tell a lot.
Definitely thought of that, but I don't know anyone with a single 4 bbl intake manifold that I could try. And honestly right now I can't afford to purchase one. I could come up with a carb pretty easy.
We have a few in stock if you would like to try one.Stop by the shop some day.I don't want to speculate what your problem is but I'am sure you will find the issue.If your at any of the races and we are there just stop by and myself or one of our racers will be happy to help you trouble shoot your problem.  
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Re: Hemi stumble/sputter on starting line ???
[Re: Charlie Moore]
#1493510
09/10/13 09:27 AM
09/10/13 09:27 AM
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Joined: Jan 2003
Posts: 6,350
Aurora, Oh.
max_maniac
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Posts: 6,350
Aurora, Oh.
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Quote:
Well I pulled the intake off last night and was lucky enough to have the gaskets come intact on the manifold. I showed that the intake is pretty much sitting on the block rails at the front and back. And is about .070 low on the gaskets. It also appears it was not sealing real well across the bottom side of all the runners. It had .060 gaskets when I bought it, so I didn't think much of it. I'm putting .120 gaskets on to raise it up to cylinder head ports. Then were planning on heading to Norwalk. Hope to see you all there.
Great news - hopefully this fix will correct the issue and if not there should be enough people there to help sort it out and get it corrected
Russ
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Re: Hemi stumble/sputter on starting line ???
[Re: jdfpam]
#1493512
09/11/13 07:37 AM
09/11/13 07:37 AM
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Joined: Feb 2012
Posts: 54
Strongsville, Ohio
Charlie Moore
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Quote:
Charlie,
I hope that you found your problem. When you called us, I thought that you said your name was Tony! I did not think that you said Charlie. My Dad thought that the intake gasket could be the problem. Did you leave the cam at 105?
By the way, did you used to race a Ford Fairlane?
Jeff Day
I now believe the intake was on an engine that had been decked a bit. I needed to raise it up to line up the ports and seal it better. I did leave the cam at 105. Bullet said there was no advance ground into that came and it may work better anyway. I raced a 1963 Ford Galaxie for about 18 years. It is now in southern California.
Thank you to you and your father for listening to my issues and the advise. I will see you this weekend.
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