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03-28-2020, 05:52 PM | #21 |
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Location: Minnesota, Florida Keys
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Re: 8ABA engine distributor?
Derek, I think you should slow down and do a little more reading and researching about what you are trying to do. If you really do have 80 lbs of oil pressure at cold idle like you said in another thread here, that's a problem and you should find out what's going on there before you worry about your ignition.
A word to the wise. |
03-28-2020, 06:04 PM | #22 |
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Location: Minnesota, Florida Keys
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Re: 8ABA engine distributor?
As for a distributor, first decide if you want vacuum over mechanical advance, or just mechanical. You then get a suitable SBC distributor (either GM or aftermarket) and send it to one of several guys on here who convert these distributors for use in a flathead, "Charlie ny" is the one I have used and he is A number 1. I would actually discuss with him what you want to do and he can probably recommend or supply the proper distributor core that best fits your needs. Then have him do the conversion. If you are a glutton for punishment, get the Pertronix kit of your choice and have that installed (or do it yourself).
When he does the conversion, he will set up a good standard advance curve that should work just fine in 99% of the cases. Fine tuning beyond that will be in your hands. There is excellent aftermarket support for weights and springs for SBC distributors, so you should not be hurting for any parts you might need. |
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03-29-2020, 07:24 AM | #23 | |
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Re: 8ABA engine distributor?
Quote:
__________________
Al |
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03-29-2020, 08:40 AM | #24 | |
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Re: 8ABA engine distributor?
Quote:
http://www.bubbasignition.com/loadam...lacements.html |
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03-29-2020, 09:54 AM | #25 |
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Re: 8ABA engine distributor?
"Bubba" - I didn't mean to ignore you, I just thought you were enjoying your well-deserved retirement. If you still have your hand in this (even just a little bit), it's to everyone's benefit.
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03-29-2020, 04:19 PM | #26 |
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Location: Niagara Falls Canada
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Re: 8ABA engine distributor?
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But am I to under stand the shaft that has the gear is cutoff and doesn't extend down into the 8BA bearing?? |
03-29-2020, 07:09 PM | #27 |
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Re: 8ABA engine distributor?
derek,
As with Bubba's sbc conversions mine have the shaft that extends past the gear. If your timing cover does not have the lower bushing just chop off the extension. Additionally as received his and mine will work in ANY timing cover.....we are both very non exclusionary. Charlie ny |
03-30-2020, 02:48 PM | #28 |
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Re: 8ABA engine distributor?
The conversion I bought very early after these became available had the extended shaft but it was too big for the lower support hole in the aluminum cover. I eventually cut the extension off. Without the extension, the distributor tried to "wallow" around in the cover unless the hold down bolt was really tight. Fearing a lot of stress was put on the aluminum distributor, I sent it to Charlie to install a new shaft with the extension machined to fit the cover's lower support hole. All the instability disappeared with the new shaft. The aluminum cover with the lower support hole doesn't provide nearly as much support/stability in the upper section as an iron cover without the lower hole provides.
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03-30-2020, 05:15 PM | #29 |
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Re: 8ABA engine distributor?
OK that is what I wanted to here is that the remanufactured distributors HAVE
the extended distributor shaft lower support bearing. This seems very necessary for gear engagement and stability. |
03-30-2020, 05:57 PM | #30 |
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Re: 8ABA engine distributor?
Derek, Use the cast iron cover with the shorter shaft as 40cpe suggests.
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03-30-2020, 06:09 PM | #31 |
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Re: 8ABA engine distributor?
I like the aluminum timing covers. You can polish them and they weigh 5 lbs less than the cast iron cover. I run 'em when I can find 'em.
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03-30-2020, 06:10 PM | #32 |
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Re: 8ABA engine distributor?
I actually wasn't suggesting the use of the cast iron cover. I haven't used one to base an opinion that one is better than the other. I was only saying that I had distributor wobble in the aluminum cover until the bottom support hole was utilized.
Last edited by 40cpe; 03-30-2020 at 08:33 PM. Reason: spelling |
03-31-2020, 05:52 PM | #33 |
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Re: 8ABA engine distributor?
I'm trying out a Mallory Unilite hooked up to a CB Performance black box. I can control everything through a laptop and most importantly, I can pull the timing down as the boost comes up. The motor should be back in the car this weekend and ready to roll in a week or two!!
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03-31-2020, 06:51 PM | #34 | |
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Re: 8ABA engine distributor?
Quote:
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04-01-2020, 05:00 PM | #35 |
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Location: Niagara Falls Canada
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Re: 8ABA engine distributor?
Sorry bout that........ Quick street use........ engine is in a 1934 ford pickup with a
mustang 5speed T5, and 3:73 Ranger rear-end, Triangulated 4 bar, and conventional ford leaf spring front-end. all steel , full fendered, all steel, un-cut pickup..... |
04-01-2020, 05:08 PM | #36 |
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Re: 8ABA engine distributor?
That helps a lot!
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04-02-2020, 06:50 PM | #37 |
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Re: 8ABA engine distributor?
I am waiting on a new aluminum timing gear, when it is installed I will restart the engine with fresh 20-50- VR1 oil and all new valves and seats hopefully next week.
I will then get a new reading on my oil pressure gage, both cold and warmed up ( my last report disturbed some members at 80psi). so I will see what happens this time...................... |
04-02-2020, 11:56 PM | #38 |
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Re: 8ABA engine distributor?
I got an aluminum gear in mine since 1949-51 Mercury advertised truck powertrains for quality and performance in some back in the day sales brochures and it's noisy! The original set, aluminum and steel was all pitted from years of rattling as well and when I tear my 255 down for new gaskets and seals after 35 years of use AND if the gear is shlonged I will throw a fiber one in!! They worked in the Fords and what got me is I would hear a rattle at 62 miles per hour! Ignition preignition, loose engine components?? Finally I realized its that stupid gear perhaps resonating or rattling at certain engine rpm's and I hear this accelerating before I shift. As for the distributor, a 6 volt battery, positive ground of course, a GOOD brand of points and condenser, and of course make sure the bushing is in good shape and not worn and sloppy. The advance springs can be checked using a timing light as well and tweaked. China ain't allowed in my 70 year old Mercury as well! The only thing know to work from them is Corona!
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04-03-2020, 10:15 AM | #39 |
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Re: 8ABA engine distributor?
I would be careful about using a fiber timing gear. There have been reports that the replacements currently available fail in as little as 2000 miles. If you can find a NOS gear, you may be OK, but there is no way I would put a used fiber timing gear in an engine I cared about;
In addition, I have aluminum timing gears in two engines and am disappointed in the fact that they are no more noisy than a stock fiber gear. I you sure there wasn't some other problem? |
04-03-2020, 12:12 PM | #40 |
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Re: 8ABA engine distributor?
I agree with Tubman. I've been running and for 25 years and don't hear any extra noise. If you're hearing bad noise, you've got some other problem.
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