Carb???
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Elder User
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From: Slippery Rock, PA
Carb???
My dad is goin to pickup a new pickup friday. It's an 86 F-150 and its inspected and runs and drives.$500. But the carb is gonna need rebuilt cuz its old of course. It's a 300 I6. Was this the last year a carb was offered on the 300, or is it an older motor possibly?
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Elder User
Joined: Mar 2006
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From: Slippery Rock, PA
ok thanks...that explains why cold air intakes are only sold for 87-up instead of 86...not that i was looking for one anyhow...do u know what the diameter of the flange is so i can get an adaptor for a 5-5/8" filter?
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From: Virginia
I do not know what the diameter is, but I would caution you about making modifications. It all depends on what you are going to use the truck for.
If you want to use the truck as a "tool", wanting it to start reliably and run good in cold damp weather, I would leave the original air cleaner on the carb, along with the heat stove pipe going to the exhaust manifold. You have to remember this is a carbed truck, and it has it's little quirks that the factory made provisions for. The problems carbs have in cold weather is icing. On a cold damp day, with no heat provisions, the engine will start to run rough and stall because of ice building up in the carb throat. On some engines this is worse that others. I know the racers preach no heat to the carb means more power, but that's racing and this is street use. Port fuel injection on the other hand does not have this problem.
Now if you are going to make a play toy, and drive it in warm nice weather, then by all means put a chrome air cleaner on it and make modifications. It may be a little cold natured, but it will quickly warm up in the summer.
If you want to use the truck as a "tool", wanting it to start reliably and run good in cold damp weather, I would leave the original air cleaner on the carb, along with the heat stove pipe going to the exhaust manifold. You have to remember this is a carbed truck, and it has it's little quirks that the factory made provisions for. The problems carbs have in cold weather is icing. On a cold damp day, with no heat provisions, the engine will start to run rough and stall because of ice building up in the carb throat. On some engines this is worse that others. I know the racers preach no heat to the carb means more power, but that's racing and this is street use. Port fuel injection on the other hand does not have this problem.
Now if you are going to make a play toy, and drive it in warm nice weather, then by all means put a chrome air cleaner on it and make modifications. It may be a little cold natured, but it will quickly warm up in the summer.
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Joined: Jun 2004
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86 was the last year that the carb was offered on the 300 (some later 86s got EFI), however, its whats called the feedback system or the TFI (thick film integrated?). Its almost a combination of a carb & EFI. Apparently it worked all right when new, but not so great as it gets older. If the truck still has the system you're probably better off to back-date the truck to the older carb/ignition system, known as the DS2 (duraspark 2). To do this you'll need an earlier carb, distributor & module (76-83). With the truck being an 86, you actually might even have the right connections, so you could just 'plug & play' so to speak. Doing this will do a lot more for you than a cold air intake.
Edwin
Edwin
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From: Slippery Rock, PA
thanks for the size...and BTW 63redtudor, im not looking for a cold air intake i was just stating that i noticed in my summit and jegs catalogues that they list them for 87-up but not earlier and that explains the carb
