Re: Worth doing for bronze drive gear?
[Re: Uberpube]
#2917543
05/02/21 02:32 AM
05/02/21 02:32 AM
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Joined: Aug 2003
Posts: 43,181 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,181
Bend,OR USA
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I wouldn't do what your doing I've put a bunch of motors together for both race only and street and strip that used a good bronze gear with no wear issues on any of them with stock oiling. My Duster had over 3000 street miles and hundreds of passes shifting at or above 7000 RPM on every run on the same Mopar brand gear I have seen other guys that had gears get worn, I'm not sure what they did different than me but they did have wear issues. I do coat the gear and cam gear with regular motor oil sprayed from a old oil can that squirts oil out the tip, I don't soak them or dip them in oil like I do the piston tops and rings look closely at the #2 exhaust lobe and how it slings oil off of it from the lifter bores toward the oil pump drive gear Good luck either way
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Worth doing for bronze drive gear?
[Re: Uberpube]
#2917561
05/02/21 06:57 AM
05/02/21 06:57 AM
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Joined: Jan 2003
Posts: 8,027 Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,027
Tulsa OK
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I drilled the plug on my small block this time around, I don't have enough time on it to say if it worked but it can't hurt. On my last tear down i was surprised to learn that the gear did show some weat after 4500 or so miles. But the bushing in the block was smoked.
I did end up drilling the plug at the end of the galley at a slight angle and I was able to aim it at the gear better after seeing how it sprayed while pre oiling. That is an easy decision to make when drilling a easy to replace plug, it would be tough drilling a block like that.
68 Barracuda Formula S 340
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Re: Worth doing for bronze drive gear?
[Re: Uberpube]
#2917721
05/02/21 03:10 PM
05/02/21 03:10 PM
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Joined: Oct 2005
Posts: 8,872 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,872
Ontario, Canada
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Most of the materials are picked just because of their softness relative to the cam, so the gear wears instead of the cam. This is pure BS. There are thousands of products out there using a combo of bronze and steel gears - not because the bronze is softer. I mean c'mon, does ANYONE want bronze filings in their product ?!?!?
Last edited by Stanton; 05/02/21 03:10 PM.
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Re: Worth doing for bronze drive gear?
[Re: Stanton]
#2917788
05/02/21 06:32 PM
05/02/21 06:32 PM
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Joined: Nov 2013
Posts: 703 Southern Alberta
Uberpube
OP
super stock
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OP
super stock
Joined: Nov 2013
Posts: 703
Southern Alberta
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Most of the materials are picked just because of their softness relative to the cam, so the gear wears instead of the cam. This is pure BS. There are thousands of products out there using a combo of bronze and steel gears - not because the bronze is softer. I mean c'mon, does ANYONE want bronze filings in their product ?!?!? I see the combo in industrial machinery quite often, but they are almost always totally flooded in oil. But would you rather have the cam or the gear eaten?
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Re: Worth doing for bronze drive gear?
[Re: Cab_Burge]
#2917832
05/02/21 08:38 PM
05/02/21 08:38 PM
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Joined: Nov 2013
Posts: 703 Southern Alberta
Uberpube
OP
super stock
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OP
super stock
Joined: Nov 2013
Posts: 703
Southern Alberta
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Look at the size differences between Mopar, Ford and GM oil pump drive gears and then think about which one gets worn out quicker, hence all the effort to make THEM last longer Flooding or increasing the oil to any of them probably doesn't hurt them, does it Reading 50 pages of google says that no brand is having any better luck than the other when it comes to the gears and roller cam conversions. Everyone likes the melanized with fewer failures, but also reading that some steel roller cams don't agree with the melonized gears either, have to make a call to the cam company on Monday and see what the deal is with that. I would have really like to have stayed flat tappet, but lately that looks to be an even bigger minefield than the distributor gear.... I don't know whats up with that, here we are in the modern machining world and 30 some years ago as teenagers we could throw [censored] together with little care and never scrub a cam.
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Re: Worth doing for bronze drive gear?
[Re: Uberpube]
#2917837
05/02/21 08:45 PM
05/02/21 08:45 PM
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Joined: Oct 2005
Posts: 8,872 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,872
Ontario, Canada
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would you rather have the cam or the gear eaten Oh, so failure is acceptable and we can chose ?!?!?
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Re: Worth doing for bronze drive gear?
[Re: Stanton]
#2917849
05/02/21 09:35 PM
05/02/21 09:35 PM
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Joined: Nov 2013
Posts: 703 Southern Alberta
Uberpube
OP
super stock
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OP
super stock
Joined: Nov 2013
Posts: 703
Southern Alberta
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would you rather have the cam or the gear eaten Oh, so failure is acceptable and we can chose ?!?!? Google it, a lot of the industry states bronze gears as sacrificial, to plan on replacing it at intervals even with the everything set up correctly.. I would rather not have that either, hence why I am also looking at the melonized gear as permanent solution. My problem is time, I need the engine together before the body shop looses their [censored] on me for not getting the chassis back to them with the driveline it it. .
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