Edelbrock Performer vs Thermoquad...

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Re: Carburetor choices ?

Unread post by Acesneights » Sat May 04, 2013 5:22 pm

Spoke with Summit. New carb being shipped monday. I am certain this carb was a re box.
1977 Travco 270 Elite\n1974 Travco 220 Parts unit

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Re: Carburetor understanding

Unread post by frank-id » Sat May 04, 2013 5:57 pm

Maybe this is your beginning to know this carb. Instead of complaining, learn and fix the carb. These are great carbs. I buy and build these carbs. The carb is very adjustable to any application. Buy the carb kit with new main needles and jets. Taylor the carb to your needs. In my era, a new fuel filter must be installed before the carb is operated. Is your fuel pump pressure correct?? Are all the gaskets correct? Do not complain, fix the problem and ya may learn some stuff............Frank

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Re: Carburetor choices ?

Unread post by Acesneights » Sun May 05, 2013 9:33 am

Frank,\nI have rebuilt a few of these carbs in my time.I never said I didnt like the type of carb. This one was obvioulsy a return and they re boxed it and sold it again. Yes The fuel filter and fuel pump are new.Not only do I replace the fuel filter but I flush the fuel line into a coffeee can before reconnecting to the carb in case of something in the new filter(which has happended) The problem is not lack of fuel pressure and I should not have to "fix" a brand new carburetor that I just paid 314$ for . I could have saved that money and rebuilt the old one but I do not have the facilities to properly boil the carb out and in some circumstances if they have sat long enough with rotten gas the blockages can be difficult to clean. As I posted the I took the carb off and reset the floats and cleaned it.It is probably leaking residual fuel pressure past the needle seats.I should not have to buy a rebuild kit or parts and it is still not functioning properly and I paid alot of money for it. They can replace it. End of story.\nWould you pay 300$ for something new then have to rebuild it ?\nIt should not need Needle valves out of the box. Only minor adjustment.\nNew jets are for re tuning it for more performance or different application. The factory installed jets are more than adequate.
1977 Travco 270 Elite\n1974 Travco 220 Parts unit

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Re: Carburetor choices ?

Unread post by 77Travco » Tue May 07, 2013 4:28 pm

That sucks! Hopefully the "new" new carb will just bolt on trouble free. I may buy one myself someday but I am gonna see how your story turns out first.

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Re: Carburetor choices ?

Unread post by Acesneights » Tue May 07, 2013 9:54 pm

I'm sure it will turn out good. The design of the Edelbrock is just an Carter AFB redesigned by Weber. It even has the Weber logo.\nThe trouble with mine was it was obviously a dud and was returned by someone else and reboxed either on purpose or accident. I took it off tonight so I could pull the top off it and drain the gas to ship it back and there was gas laying in the bottom of the intake and I did not move the linkage and no residual fuel pressure. Also the throttle shaft seems to be binding. \nI'm gonna put the thicker base gasket in too although I ran it yesterday and although the aluminum spacer got hot the base of to carb was cool to the touch. I don't think it's vapor lock.
1977 Travco 270 Elite\n1974 Travco 220 Parts unit

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Re: Carburetor choices ?

Unread post by Acesneights » Tue May 07, 2013 9:55 pm

Could always scrap the Carb and do this...\n3500$...Ouch. A Cummins swap would be cheaper. This setup does look nice though...\nhttp://www.summitracing.com/parts/edl-35080/ov ... er\n\nFree Shipping !!\nlol
1977 Travco 270 Elite\n1974 Travco 220 Parts unit

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Re: Carburetor choices ?

Unread post by Acesneights » Wed May 08, 2013 5:45 pm

New carb got here and UPS took away the old one. In the interim I had a nice chat with edelbrock. The tech said there should not have been magic marker on a brand new carb so something was up with that one. Also my gas smell ...He confirmed that the gas is boiling in the bowl after shutdown from heat. He recommended a special gasket they make that is an insulator but after a brief discussion we agreed that the factory thick thermoquad gasket would accomplish the same thing. It runs much smoother now although no road test today. Raining hard here. I just shut it off so I will see if the gas smell shows up. I think it's cured. Summit did the right thing so far so all it well.\nThe tech at edelbrock was great too.\nI also dissasembled the carb before install to check the floats. They were right on the money.
1977 Travco 270 Elite\n1974 Travco 220 Parts unit

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Re: Carburetor choices ?

Unread post by Acesneights » Wed May 08, 2013 8:17 pm

Still stinks of gas on shutdown. The fact that they make this:\nhttp://www.summitracing.com/parts/edl-9266\n\nKinda tells me it's an issue with this carb. I see no difference between this and the factory Thermoquad gasket as far a insulation.\nhttp://www.jegs.com/i/Fel-Pro/375/60273/10002/-1\n\nNow that I think about it I think my 220 had the same issue.
1977 Travco 270 Elite\n1974 Travco 220 Parts unit

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Re: Carburetor choices ?

Unread post by Acesneights » Wed May 08, 2013 8:55 pm

Well after about an hour of reading(Which I wish I had done first) I basically found out that the Edelbrock 1406 perfomer series carbs are notorious for heat soak issues. Had I know this I would have rebuilt the Thermoquad. I would not recommended this Carb for this application. I guess I will be playing around with Spacers. I gotta call Summit tomorrow and see if I can return this thing. I am not happy with it. I would never buy another one. I wonder if it has anything to do with the fact that the redesign seems to have eliminated the bowl vent they used to have on the outside. Alot of people used to plug them by accident thinking they were a vacuum port.
1977 Travco 270 Elite\n1974 Travco 220 Parts unit

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Re: Carburetor choices ?

Unread post by Acesneights » Thu May 09, 2013 5:55 am

Went to bed thinking about this last night. If I can't get a refund on this thing\nI wonder if i could swap the airhorn off an AFB. I don't recall having this problem with \nThe Carter version. AFAIK the parts between the edelbrock and Carter are supposed to interchange \nAnd I have a couple junk AFB's. I can't help but wonder if the lack of external bowl vent is contributing \nTo this. I know if you plugged that bowl vent on an AFB it did exactly what i am experiencing.\nHmmm......
1977 Travco 270 Elite\n1974 Travco 220 Parts unit

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