dangerranger1983 build

[dangerranger83]

I do wonder how good the fuel is in my tank now. Filled up at a new gas station but doesn't look like they get much business yet. Filled up yesterday but only drove my truck enough to eat what was left in my lines. Drove today enough for the fuel to mix and get to my engine. I wonder if the octain level has gone down or i got sold bad gas. I have had the weather do worse this year and never a problem till now. I don't see my header bolts, gasket, etc..going bad or loosening over night. Wonder if some octain booster can help, I'm only down a 1/4 tank but didn't fill up, only got 5.5 gallons on $20. I will say the normal get up and go it had before i filled up isn't quiet there, usual has more in this cold weather on a warmed up engine.

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[Twister]

Pre-1971 engines were equipped with "soft" valve seats and leaded gasoline acted as a lubricant to prevent excessive wearof the valve seats. Using these engines with unleaded fuel in high-speed/high-load situations could result in some valve seatwear. (Boats, some farm equipment, and tow vehicles may be included in this category.) Substitute lubricant additives areavailable at auto supply stores to help this situation. In addition, valve seats are usually replaced with at the time an olderengine is rebuilt. If you are concerned about your particular application, check with your engine manufacturer.

Found that on leaded gas lol. Hope you get you truck fixed

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[dangerranger83]

I think it could be the fuel from that gas station. Going to put done octane booster in tomorrow and see what that does.

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[dangerranger83]

My step dad said to add a thing of HEET to the tank and see what that does. He use to race dirt track years ago and couldnt stand Holley carbs either, was always tuning them with weather change. He said he got an edelbrock and never had to look back.

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[dangerranger83]

Does anybody know where I can find a blue replacement cap and rotor for a Ford 302 HEI dizzy? Some reason I cant find one online, only the dizzy's for sale.

And also I assume HEI wires are the same, whether it be ford chevy, etc... Just need to find a set that can get around the exploer headers too, the wires like to touch them. The wires Im using now, I cant find any forsale anymore.

 

[dangerranger83]

Just ordered my edelbrock carb. Should be to me anywhere from Feb 21st to 25th.

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[Twister]

Just ordered my edelbrock carb. Should be to me anywhere from Feb 21st to 25th.

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Let us know how you like it, my engine came with an edelbrock Carb in it

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[dangerranger83]

From what I'm told, they are nice a very reliable.

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[BullFrog13x4]

You will love that edelbrock carb, they are usually a bolt on and run affair with the slight idle and mixture adjustment. I have been the crew chief on many race cars, and i am not very fond of the Holley carb either, but it does have its place. The biggest problem with the Holley carb is the vacuum operated power valve located in the metering block. these are available in many different vacuum ratings (ie5psi-6psi-7psi-etc.). what is normally done to eliminate it is to replace it with a "power valve plug" these plugs are sold for off road or racing use only, so if you get one tell them it is for a race car and you will not have any trouble getting it. I have a few of them rolling around in my tool box. the power valve is a rubber diaphragm and they are known to go bad, If it is only starting to go bad it can mess with performance and fuel mileage; if it is totally shot it can cause a severe backfire and possibly even burnt valves with a crazy stumble off the line. The edelbrock does not have this problem. when i use a Holley carb the first modification i do is the power valve plug kit, even on a street car.

 

[dangerranger83]

My truck struggles off the line and has backfiring. Plus terrible mileage. Sometimes the secondaries don't want to close until i shut the motor off.

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[BullFrog13x4]

My truck struggles off the line and has backfiring. Plus terrible mileage. Sometimes the secondaries don't want to close until i shut the motor off.

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Sounds like you have a vacuum operated secondary single pump Holley, the secondary's are probably sticking due to a bad vacuum actuator(diaphragm). Your description of how it performs definitely sounds like a power valve, the rubber is probably ripped. Just for kicks, when you get that new edelbrock; tare down that Holley and take some pics of the parts and post them. I would like to see if i am right ,, i am 90% positive those parts (power valve and secondary actuator) are the cause of your carb problem. The description of how it started one morning after a cold night goes with it as well because old rubber and cold night can = cracked rubber. Especially if the engine was hot, like if you drove home late and parked outside in really cold temps with a 30 year old carb.

 

[dangerranger83]

A guy wants to buy the holley off me but if he doesn't then i may tear it down after trying to sell it got cheap. Ran fine since the engine swap then one day started doing what it's doing now.

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[BullFrog13x4]

A guy wants to buy the holley off me but if he doesn't then i may tear it down after trying to sell it got cheap. Ran fine since the engine swap then one day started doing what it's doing now.

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welcome to the world of "why we don't use Holley carbs"!joking,, that sounds like most of the stories i have heard about old Holley carbs from most of my friends, if they are rebuilt right they can be a great carb. They do always seem to leak out of at least one gasket. The edelbrock does have a few drawbacks as well. they are mostly limited to extreme use as the edelbrock performs well on the road out of the box. If you were to want to use it on a 4x4 that will see extreme angles like when rock crawling then you might want to look into the angles of the floats (whether they would shut the fuel off at the angle or not) and the secondary adjustments (exactly when do the weights throw the secondary's open). Depending on what version you choose to get they do offer pre-modified versions for extreme off-road use. If you are just driving the truck and occasionally going off road down some trails and maybe a hill or to then you wont need to worry about any extreme carb stuff.

 

[BullFrog13x4]

Found some info on the metering block and power valve on the Holley for any one interested.

 

[BullFrog13x4]

and the plug,, sorry i am not going to post part numbers; they are easy to find.