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Author
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Topic: Carb spacer + Boiling gas = Fix?
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70stang351w
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Member # 9948
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posted
 
 
Been reading over the net that adding a alumin spacer has helped with fuel boiling issue. Does anyone have experiance with this being a fix?
Running a mech fuel pump so cant really reroute the lines
Fuel lines going in to carb after the fuel filter looked like swiss cheese from gas boiling through
mods:
Possible Edelbrock cam
Edelbrock Performer intake
Edelbrock Mech Fuel pump
EdelBrock Water pump
Holley Street avenger Carb 670cfm
MSD- Ready Run Distributor, coil, Wires
LT and custom exhaust
Replacing :
Concours Radi Hoses with coils
MSD cap rotor wires
autolites 45
Leaky valve covers
[ 2014-09-05, 04:49 PM: Message edited by: 70stang351w ]
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1996 GT VERT /32v MOD - SOLD
1970 Mustang Coupe M-Code 351w
Posts: 1419 | From: 925 | Registered: Apr 2010
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Duncan Motors
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Member # 7045
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posted
cover the lines or something else, if your so close to boiling fuel then u got bigger issues than a spacer. it will help keep the carp cool but not a aluminum one, get it made of anything else.
Posts: 6310 | From: Vallejo | Registered: Sep 2006
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70stang351w
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Member # 9948
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posted
I know the gas in the tank is old would that have anything to do with it. I am going to drain the tank and put fresh fuel in what else might make the fuel boil?
also need to install actual water temp gauge don't know how hot it is truly getting stock dummy gauge is always in the middle: radiator was rebuilt when i put it away but never did full flush
didn't have this problem when i put the car in storage
[ 2014-09-05, 04:28 PM: Message edited by: 70stang351w ]
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1996 GT VERT /32v MOD - SOLD
1970 Mustang Coupe M-Code 351w
Posts: 1419 | From: 925 | Registered: Apr 2010
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hurting your feelings
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Member # 13641
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posted
Replace the fuel filter. An do you have a cast iron intake manifold?
Posts: 1830 | From: In front of the bank with a 45 an a ski mask | Registered: Jun 2014
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70stang351w
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Member # 9948
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posted
Fuel filter is going to be replaced i have a new SS -6an setup for fuel pump to the carb; intake is currently a eddy performer fuel pump in is and eddy mech
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1996 GT VERT /32v MOD - SOLD
1970 Mustang Coupe M-Code 351w
Posts: 1419 | From: 925 | Registered: Apr 2010
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SacStangDriver
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Member # 8304
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Electric or mechanical pump?
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Need sidework done at great prices? I work on all makes and models from engine work to gears. Check engine light problems too. 916 912 3493
Posts: 1217 | From: sacramento | Registered: Mar 2008
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hurting your feelings
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Member # 13641
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posted
Replace the fuel filter then recheck.
Posts: 1830 | From: In front of the bank with a 45 an a ski mask | Registered: Jun 2014
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70stang351w
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Member # 9948
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posted
quote:
Originally posted by SacStangDriver:
Electric or mechanical pump?
jeremy its mechanical
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1996 GT VERT /32v MOD - SOLD
1970 Mustang Coupe M-Code 351w
Posts: 1419 | From: 925 | Registered: Apr 2010
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Tom Renzo
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Member # 13165
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Making an aluminum spacer is counter productive. Make one from FENALIC. Also if you do not have a feed return system you are dead in the water. Fuel boiling can only be addressed by installing a pump inside the tank and returning it to same so fuel keeps moving and cools. You have to take the mechanical pump off the engine where it increases it's heat absorption and eventually boiling. We have had this issue numerous times especially with the newer fuels. Forget the old time old fashioned supply methods they do not work. other than the issues you are now encountering. design a new system and the best advice i can give you is to forget the old school carbs and start using EFI systems that do not have these issues. Also feed the carb from the rear of the engine to the front of the carb. This is better than from the front to the carb. Remember you are trying to control heat absorption. So moving the fuel constantly is the solution but hard to accomplish if you never designed a system before. And get it close to the carb inlet as possible. We feed with 3/8 and return with 1/4 and use a 10LB pump returned to accomplish 6-7 inlet psi. This works and as i said needs to accomplished as near as posinle to the carb inlet fitting. Once again EFI is the answer. Good luck.
[ 2014-09-05, 07:38 PM: Message edited by: Tom Renzo ]
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I spend money i don't have. Building cars i don't need. To impress people i don't know.
Posts: 557 | From: CT | Registered: Sep 2013
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70stang351w
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Member # 9948
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posted
yeah i know efi would be great just don't have 2500 for just the parts....
would like to get the MSD atomic kit
Anyone use a stock EFI system? for a 351w
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1996 GT VERT /32v MOD - SOLD
1970 Mustang Coupe M-Code 351w
Posts: 1419 | From: 925 | Registered: Apr 2010
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Fostang
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Member # 3752
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Honestly it would be cheaper and better to run a fox maf efi on that 351w than the msd.
You can find a maf harness and a9(x) computer for about $150
Then you buy an efi 351w based on your goals for the car. (Long runner or short). If its a street car i would use a long runner for low end torque.
Get a tanks inc fuel system. I dont recomend an inline fuel pump for a car you plan on driving for over an hour at a time.
Throw some 30-36 lbs injectors depending on projected hp goals. 70-85mm tb and 90 lmaf.
Bam cheap set up and golden like a shower.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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4IDFOX
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Member # 9921
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I think old gas is the main problem. Might try some heet gas treatment or denatured alcohol.
Posts: 375 | From: Redding CA | Registered: Apr 2010
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70stang351w
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Member # 9948
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posted
quote:
Originally posted by 4IDFOX:
I think old gas is the main problem. Might try some heet gas treatment or denatured alcohol.
going to try new gas and lines with Phenolic spacer alittle cheaper than the MSD and or building an EFI and fuel system. Im not saying im ignoring the idea/fact of having to eventually go efi. after all the cars been carb ran for the last 45 years. The last 3 of which its been mostly sitting
I am currently also collecting parts for a new motor because i know before long it will have to be rebuilt or replaced just like most of the car already.
a C9 351w Block(1969) stroked to 408
Trickflow 205 tw heads
Was going to do Rpm Airgap with MSD Atomic but am looking to other alternative efi options maybe just go complete trickflow topend
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1996 GT VERT /32v MOD - SOLD
1970 Mustang Coupe M-Code 351w
Posts: 1419 | From: 925 | Registered: Apr 2010
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Tom Renzo
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Member # 13165
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Try new gas and see what happens.If memory serves me in science class Alcohol boils at 140* could be wrong??
[ 2014-09-08, 04:13 AM: Message edited by: Tom Renzo ]
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I spend money i don't have. Building cars i don't need. To impress people i don't know.
Posts: 557 | From: CT | Registered: Sep 2013
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4IDFOX
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Member # 9921
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The heet or denatured alcohol absorbs the water in the fuel and then helps it evaporate.
Today's fuel likes to collect water as it ages.
[ 2014-09-08, 04:33 AM: Message edited by: 4IDFOX ]
Posts: 375 | From: Redding CA | Registered: Apr 2010
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70stang351w
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Member # 9948
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posted
ended up getting the 1in Phenolic spacer and am in the process of getting my Hood finally done so i dont have the worry about space anymore since the air filter was less than 1/8of inch away from the hood when closed.
will be starting her up again this next week; hopefully with no boiling gas in the lines
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1996 GT VERT /32v MOD - SOLD
1970 Mustang Coupe M-Code 351w
Posts: 1419 | From: 925 | Registered: Apr 2010
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70stang351w
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Member # 9948
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posted
quote:
Originally posted by Duncan Motors:
cover the lines or something else, if your so close to boiling fuel then u got bigger issues than a spacer. it will help keep the carp cool but not a aluminum one, get it made of anything else.
Duncan are you talking about dei fuel line covers or something like that?http://www.streetrodderweb.com/tech/1408_mixing_new_fuel_for_old_cars/dei_aluminized_fuel_line_insulation.html
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1996 GT VERT /32v MOD - SOLD
1970 Mustang Coupe M-Code 351w
Posts: 1419 | From: 925 | Registered: Apr 2010
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