Which intake to use?
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Which intake to use?
I have 2 intakes, a C8TE 9425A and a D5TE 9425 KB. Which one would be the best to use on the 390 I'm rebuilding? Thanks
Also on a side note, there is a metal cover of some sort on the bottom of the D5TE intake. How do I or can I take that off in order to clean it? It is full of carbon and crap.
Also on a side note, there is a metal cover of some sort on the bottom of the D5TE intake. How do I or can I take that off in order to clean it? It is full of carbon and crap.
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Oooh, alright. Yeah, they just look like the tops of carriage bolts. Just to be sure, those are the rivits right? Also, how important is it to clean that out? Does it improve performance or does the crap just accumulate there or something?
Needsmorecoffee.
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From: CT
Well if you can remove them and clean it out all the better. If you see a hex or star head they might have been replaced and tapped. If not try a small cold chizel on the head to spin them counter clock wise to remove them. Just years of carbon crap and chunks can hide there. You can also inspect the heat crossover for possible cracks or damage. I can't remember if they are a straight rivit with tiny splines on the end or have slight swirls on the side. I kinda remember both but can't be sure if they were original or something someone replaced.
Needsmorecoffee.
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From: CT
BTW you'll find both intakes are more or less the same casting. Some small changes and revisions on the D5 but in essence the same as the earlier C8. I would pick the best one between the 2 and use it.
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Yeah, the reason I asked about which intake to use was because the C8 looks like it has more space under the carb where a water hose goes in the front and two exit the rear? I had never seen that before and thought that it may keep things cooler or something. I'm not an FE expert or even a Ford expert, just love the dentsides. I know it's water because the hose in front comes from the same plug where the heater hose goes just above and behind the thermostat housing. Ever seen one or am I crazy?
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The water plumbing was to keep the carb from icing when it's cold out. I don't think it actually HELPS anything performance wise, that's for sure.
There should be one water hose barb in the front, and one in the back. I THINK the second one you see in the back is really the PCV?
Also, I'd see if there's an EGR hole under that spacer - that might be another difference between the two.
That cover on the bottom of the D5 keeps the oil from cooking to the crossover, probably keeps sludge down or keeps the oil from turning to syrup too fast. I'd keep it, but definitely clean under it. Or, just block off the crossover at the ends and be done with it.
There should be one water hose barb in the front, and one in the back. I THINK the second one you see in the back is really the PCV?
Also, I'd see if there's an EGR hole under that spacer - that might be another difference between the two.
That cover on the bottom of the D5 keeps the oil from cooking to the crossover, probably keeps sludge down or keeps the oil from turning to syrup too fast. I'd keep it, but definitely clean under it. Or, just block off the crossover at the ends and be done with it.
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Huh, learn something new everyday! Yeah there is alot of smog stuff on this one. It is a California motor, so there is smog stuff galore! I'll be using the D5. I cleaned the bottom best I could. It's good enough for me. Thanks for all the help yall!
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From: suburban atlanta
The cover plate you cleaned used to be the oil separator for the road draft tube, and probably still is for the PCV. They used to fill the cavity with shredded metal, catching the oil on the shreds, and allowing the vapor to continue on out to the atmosphere, or PCV. They get really full of coke. The stuff they used looks like the filter elements in a range hood, sort of expanded aluminum.
tom
tom
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From: Union, Washington
kerwat, You are correct, heat shield only. The PCV air inlet is in the left valve cover and out to the carb on the right valve cover. What he is talking about is back when they still had road draft tubes off the back of the manifold, late 50s early 60's stuff. This was pre PCV and is not the case here.
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