Re: vapor lock

Kelly,
Where are you located and what is the daily temperature?
As a temporary fix, try some insulation around the fuel line starting at or near your headers(?) and going to the fuel pump, if that doesn'r work, try it from the fuel pump to the carb.
Another thing to try is take the hood off (temporary fix,maybe), see if that solves the problem?
Need to work at it logically. Last resort is a electric fuel pump.....
From: kelly arnold <keltonm@xxxxxxxxxxxxx>
To: 1962to1965mopars@xxxxxxxxxxxxxxxx 
Sent: Tuesday, August 14, 2012 5:35 PM
Subject: Re: vapor lock

Well I've tryed the heat tape on the filter and lines. No good still does it. The engine compartment gets so damn hot it's got the air cleaner where I can't even touch it to take it off to see if the carb is getting fuel. Does anyone have that problem with there 440? Why does it
 get so hot.
Kelly

-----Original Message-----
>From: Steve Mick <micher@xxxxxxxxxxxxxxx>
>Sent: Aug 14, 2012 2:12 PM
>To: 1962to1965mopars@xxxxxxxxxxxxxxxx
>Subject: Re: vapor lock
>
>Gary, I really got a chuckle from your post----Just another reason there are 
>lawyers! LOL...............MO
>{Steve Mick}
>http://stevemick1964dodge.shutterfly.com/pictures/5
>----- Original Message ----- 
>From: "Gary H." <62to65mopar@xxxxxxxxxxx>
>To: <1962to1965mopars@xxxxxxxxxxxxxxxx>
>Sent: Tuesday, August 14, 2012 8:39 AM
>Subject: Re: vapor lock
>
>
>This is a question that has come up over time in a lot of car discussion 
>forums. There does not seem to have been any scientific experiments to prove 
>or disprove the use of wooden clothes pins as a cure. Lots of anecdotal 
>speculation though. Below is a sample:
>
>
>Heat sink
>
>Take those pins and clamp them to various places on your fuel (specifically 
>in the areas where it is getting hot and vapor locking).  In order for the 
>vapor lock to occur, it must heat the fuel and the fuel line to a 
>temperature that will turn the gasoline to a vapor.  By attaching the 
>clothes pins, you are basically creating a heat sink.  In order to heat the 
>fuel and line, it must
 also heat up the clothes pin.  It cannot raise the 
>temperature of the clothes pin hot enough to create a vapor lock hence the 
>problem is solved.
>http://www.carolinarovers.info/croc-stuff/tips/365-how-to-cure-fuel-line-vapor-lock
>
>Or not heat sink but otherwise:
>
>But, I don't think their actually acting as heat sinks. I say this for the 
>same arguments others have already made. Wood is not a good heat sink.
>
>I also would argue that they aren't succeeding by acting as insulation. Most 
>of the lines I've seen haven't had enough clothes pin to cover more than 1 
>or 2" of line.
>
>I would propose four different theories on why it works, but not as heat 
>sinks. I would think it works by either changing the air flow, acting as 
>weights
 or spacers, or "chambering" the tube.
>
>First, I had one of the engine owners tell me that the clothespins disrupt 
>the airflow either away from, along, or around the fuel line keeping it 
>cooler.
>
>Second, that they act as standoffs keeping the fuel line away from or out of 
>heated areas where it would otherwise have been without the pins.
>
>Third, and my second favorite is that they act as weights causing the line 
>to "dip" down rather than arch up so any bubbles would run to the ends of 
>the line rather than creating a bubble in the center.
>
>Fourth, which is the most complex and my favorite is that the pins create a 
>bottleneck effect within the fuel line.
>
>The ever so slight compression on the tubing creates small
>"chambers" or bottlenecks inside the rubber line which effect the behavior 
>of the vapor. Possibly percolating
 through each little narrow point keeping 
>the fuel moving through the line.
>
>This would explain why clothespins don't seem offer any effect on hard lines 
>or the new stiffer rubber tubing, while still working on the older, softer 
>lines available through much of the 60's and 70's.
>
>***
>
>Transpiration I'm told, same as sweat evaporating off you cools you down, 
>supposedly the wood is wicking the moisture off the outside of the metal 
>fuel line, cooling it faster.
>
>http://www.smokstak.com/forum/showthread.php?t=64217
>
>
>Vibrations from the clothes pin makes as much sense as the other 
>explanations.
>Skinned Knuckles magazine had an article (or series of articles) a few years 
>back about things that can contribute to vapor lock. One of the things 
>mentioned was to have the fuel lines all smooth, no kinks or dents to trap
 
>bubbles. Also, make sure that there is a continuous slope up from the pump 
>to the carburetor. Any bubbles will then rise up the the carb and be 
>expelled from the system. If the line dips down at any point there will be a 
>high spot for the bubbles to collect and cause a problem. 
>http://forums.aaca.org/f120/vapor-lock-157015.html
>
>Thanks,
>Gary H.
>
>>  -------Original Message-------
>>  From: Eric Sturgis
>>
>>  I wonder. why it works.....anybody know why?
>
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