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06-01-2016, 08:53 AM | #21 |
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Re: Vac pump destruction / mystery
OK...........I understand your "timing" points. I've run less , but it does in fact , fall off..................just for shyts and giggles I'll pull it down to 34 and see what happens........
Besides all this........I have to follow up with this closing comment. I made the mistake of using the Brad Penn BREAK IN oil to make initial passes down the track ( 5 ) , no one ever warned me or told me otherwise..........call me a dumazz if you want , but I did, and I learned the hard way. My INTENTION WAS , run it a few times and change it. Now , I know that was wrong..................perhaps the vac pump isn't the problem now , after all. I actually called Brad Penn and talked with "Ken?" anyway he slammed me for doing that , so did my "old machinist" I use.......LOL And Adger Smith made references to this as well.......the older I get , the dumber I still am........doubt timing contributed. |
06-01-2016, 09:20 AM | #22 |
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Re: Vac pump destruction / mystery
I've personally made many passes with BP breakin oil in my engine, never had an issue with mine or the several engines I've freshened for other racers. Not sure that theory holds water, however the timing advice sounds like a likely cause. Hope you find it. BTW on the engines I've done for other folks , with a wet sump and vacuum pump I "request" they not pull more than 10 inches. That number is NOT a result of much R&D merely going off the condition of engines at tear down with a known amount of vacuum.
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Joe Buchanan SS/BX 3117 Last edited by buzzinhalfdozen; 06-01-2016 at 09:25 AM. |
06-01-2016, 09:36 AM | #23 |
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Re: Vac pump destruction / mystery
JOESPANOVA,
I believe I have the answers you are looking for, and it would much easier to talk to you over the phone, and then post what we concluded. If you would like to, please call me at Moroso at 203-689-4010 Thanks, Scott Hall |
06-01-2016, 09:38 AM | #24 |
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Re: Vac pump destruction / mystery
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06-01-2016, 10:05 AM | #25 | |
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Re: Vac pump destruction / mystery
Quote:
Steel valves here...............Comp 944 springs seem to get the job done. Absolutely I've considered an Accusump......SS guys on this very forum suggest I don't need one |
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06-01-2016, 10:57 AM | #26 | ||
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Re: Vac pump destruction / mystery
Quote:
Quote:
That said, making passes on break in oil is not your issue, many have including myself though not on brad penn, personally I would never use it, don't like what I've seen come out of friend's engines who run it. I've broken it using Joe Gibbs or Lucas and run Mobil 1 in my race engines for the past 25 years. Otherwise, hope all is well. Last edited by 1320racer; 06-01-2016 at 11:03 AM. |
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06-01-2016, 11:14 AM | #27 | |
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Re: Vac pump destruction / mystery
Quote:
Actually ......I'll probably go back to what worked in the past.........I've been in this thing waay too much in the last 4-5 months...... I'm sure BP is fine ..........just that now I'm tired of f'in around and need to get back to havin' fun. Hope this new Bullet cam gets me in the thirties........... |
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06-01-2016, 11:22 AM | #28 |
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Re: Vac pump destruction / mystery
Joe, my suggestion is talk to national known and proven engine builders for advice/guidance.
Maybe even better is to post your issue here... http://drr.infopop.cc/eve/forums/a/frm/f/80760912 and if FastBuick doesn't reply, shoot him a PM. He is a competitor at my home track, running a high rpm small block turning 9.40s off the footbrake, on the hill in 4000 foot air which should be 9.20s at a sea level track. I don't know specifics about his combo. |
06-01-2016, 11:35 AM | #29 | |
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Re: Vac pump destruction / mystery
Quote:
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06-01-2016, 11:53 AM | #30 |
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Re: Vac pump destruction / mystery
I suggest you title the post "High RPM small block"
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