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Edelbrock Carb Heat Soak Issue.
#1311833
09/28/12 07:44 AM
09/28/12 07:44 AM
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Joined: Jan 2003
Posts: 2,179
Walton, Indiana
TimS
OP
top fuel
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OP
top fuel
Joined: Jan 2003
Posts: 2,179
Walton, Indiana
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Anyone have heat soak issues with their Edelbrocks. I put a new 1406 on my 69 Bee and have hard start issues with it when hot. I took off a Carter Comp AFB and had no issues with that. Initially I put it directly onto the manifold but have since added a 1/4 inch spacer to help to try and eleviate the problem.
1968 Barracuda Fastback 318-2BBL 904 2.76 Frost Blue Survivor
1970 Roadrunner 440+6 BBL 727 AT 4.10 SG Dana Blue Fire Metallic
1971 Cuda 340-4 BBL 4spd 3.91 SG Curious Yellow
1972 Barracuda 318-2 BBL 904 AT 3.23 1 Legger Tor Red/White Vinyl Top
2007 Dodge Ram 1500 5.7 Hemi AT Patriot Blue
2011 Dodge Challenger RT 5.7 Hemi 6spd 392 SG Triple Black
2014 Dodge Charger RT Max AWD 5.7 Hemi AT 305 Billet Silver
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Re: Edelbrock Carb Heat Soak Issue.
[Re: rapom]
#1311835
09/28/12 08:36 AM
09/28/12 08:36 AM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Just about everybody with an edelbrock has the problem. You will need to buy an electric fuel pump to prime your carb before you start your car. Do a search on moparts as there have been many ways to solve the problem.
Not me, but I use a victor jr 340 intake manifold with no heat risers. My 1405 sit's right on the manifold and does not boil the gas and I have driven it alot in 110 degree temps.
I also use a stock mechanical fuel pump with a hemi vapor separator bolted to the fuel pump with a return line.
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Re: Edelbrock Carb Heat Soak Issue.
[Re: TimS]
#1311836
09/28/12 08:39 AM
09/28/12 08:39 AM
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Joined: Jan 2003
Posts: 5,444
Indiana
YO7_A66
master
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master
Joined: Jan 2003
Posts: 5,444
Indiana
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""Not me, but I use a victor jr 340 intake manifold with no heat risers.""
If you have an intake with the heat crossover open, this adds allot of heat to the top of the engine which radiates upward to the carb body.
1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
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Re: Edelbrock Carb Heat Soak Issue.
[Re: YO7_A66]
#1311837
09/28/12 08:51 AM
09/28/12 08:51 AM
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Joined: May 2005
Posts: 4,749
Florida
BDW
master
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master
Joined: May 2005
Posts: 4,749
Florida
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Re: Edelbrock Carb Heat Soak Issue.
[Re: TimS]
#1311839
09/28/12 09:40 AM
09/28/12 09:40 AM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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best thing I have found that works with my 600 with alum intake was the 4-hole stacked heat dissapator. I used 2 kits to make a 1" 4-hole spacer. stacks up gasket/plate/gasket/plate/gasket/carb I blocked off the heat cross over at intake gaskets and now all of the heat soak problems are gone, no gas perking/flooding/hard starts/reprimeing. I can drive 40 miles and not be able to touch the intake but a few seconds,the cab body is luke warm at best.  I also use this same style heat disapator for the spredbore q-jet on the stock cast iron intake on my SB. the 1" 4-hole adds the best lowend torque gain over the 2" 4-hole on my junk while keeping the carb cool.
Last edited by scratchnfotraction; 09/28/12 09:43 AM.
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Re: Edelbrock Carb Heat Soak Issue.
[Re: TimS]
#1311841
09/28/12 09:53 AM
09/28/12 09:53 AM
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Joined: Jan 2003
Posts: 75,088
A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,088
A Banana Republic near you.
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Quote:
Anyone have heat soak issues with their Edelbrocks. I put a new 1406 on my 69 Bee and have hard start issues with it when hot. I took off a Carter Comp AFB and had no issues with that. Initially I put it directly onto the manifold but have since added a 1/4 inch spacer to help to try and eleviate the problem.
Seems more like it's an ebrock carb issue since most everyone is experiencing it.
Why did you remove the Carter Comp ?
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Re: Edelbrock Carb Heat Soak Issue.
[Re: TimS]
#1311847
09/28/12 09:55 PM
09/28/12 09:55 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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I have a 318 dd 65 dart with a streetmaster intake aluminum with a thick ~3/8" FelPro base gasket & my beloved 1406 has never shown a hint of hot soak/evaporation/hard starting even in the dog days of summer when I've (on rare occaisions because it's 10 cents cheaper) ran a tank of gasahol (E10 ethanol). iirc I put in a hot stat 205? when I put it together but it seems to run cooler than that & my engine compartment is open (small air cleaner/no accessories) if that makes a big difference. The deciding factor (in my case) I believe is that the heat riser is non op
live every 24 hour block of time like it's your last day on earth
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Re: Edelbrock Carb Heat Soak Issue.
[Re: lilcuda]
#1311852
09/29/12 08:18 AM
09/29/12 08:18 AM
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Joined: Sep 2007
Posts: 14,889
up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Quote:
Quote:
Quote:
I traded all of my Edelbrock 1406 problems for Holley 650 DP problems.
There you go.
Hardly. I've had ZERO problems with my Holley. Why? I run two fuel filters. I fought and fought and fought to avoid swapping to a Holley. My former co-worker kept telling me to do it. When I finally did, I gained a TON of throttle response, gobs of torque and HP which translated into .22 and 4 MPH in the 1/4 mile with no other changes.
Your next thought is probably going to be "Yeah, but you lost mileage." Nope. Gets the same exact mileage.
I've since gotten a friend to swap out his Carter for a Holley on his 340. It's like a different car. He loves the power.
Also, the old wives tale about the power valve blowing out only applies to ancient Holleys. All new ones have check valves that prevent that.
I been running Edelbrocks for years, my 750 since 1988. The 600 since 97, zero problems and I bet it get's way hotter here, zero heat soak issues. If you are having a loss of power you ain't tuning it right. In one of the recent Car Craft's they had a big shoot out comparing carbs, the information is interesting, read it.
They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
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