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BRASS GEAR OIL DRIVE FOR ROLLER #3282551 01/13/25 10:49 PM 01/13/25 10:49 PM
Joined: Oct 2008 Posts: 1,200 East Coast A A/MP OP pro stock
A/MP OP pro stock A Joined: Oct 2008 Posts: 1,200 East Coast	Does the the brass gear on the oil pump drive need to be a yearly serviced part(replaced) when used in a street/strip motor?

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: A/MP] #3282555 01/13/25 11:14 PM 01/13/25 11:14 PM
Joined: Jan 2003 Posts: 2,766 Walton's Mountain, Pa Steve1118 master
Steve1118 master Joined: Jan 2003 Posts: 2,766 Walton's Mountain, Pa	No. Just check it for slop every year, and when it gets too loose replace it. In 54 years I've replaced it three times. "Old age and treachery trumps youth and enthusiasm, every time!" East Central Director / Chrysler Power Magazine www.reasbeckracing.webs.com

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: A/MP] #3282572 01/14/25 01:08 AM 01/14/25 01:08 AM
Joined: Jan 2003 Posts: 31,330 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,330 Oregon	Originally Posted by A/MP Does the the brass gear on the oil pump drive need to be a yearly serviced part(replaced) when used in a street/strip motor? Maybe. We see worn out gears all the time on drag race engines. At the minimum you should pull the distributor out every winter and look at the gear. If it looks fine then run it again, but once it starts to show wear you need to replace it. I'd never go more than two seasons without pulling the gear for an inspection.

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: A/MP] #3282585 01/14/25 06:23 AM 01/14/25 06:23 AM
Joined: Aug 2003 Posts: 44,135 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 44,135 Bend,OR USA	A "melanized" steel gear may be a better choice for a high miles per year street car Last edited by Cab_Burge; 01/14/25 06:27 AM. Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: Cab_Burge] #3282587 01/14/25 07:10 AM 01/14/25 07:10 AM
Joined: Mar 2006 Posts: 10,155 MI, usa dvw I Live Here
dvw I Live Here Joined: Mar 2006 Posts: 10,155 MI, usa	The engine in my race car has 1100 passes. The gear hasn't been checked yet this year but in the past it's had minimal wear. Same gear it started with in 2012 turning a HV pump. Doug

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: Cab_Burge] #3282594 01/14/25 08:34 AM 01/14/25 08:34 AM
Joined: Aug 2008 Posts: 4,199 Mo. racerx master
racerx master Joined: Aug 2008 Posts: 4,199 Mo.	A "melanized" steel gear may be a better choice What about race only application?

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: racerx] #3282597 01/14/25 09:05 AM 01/14/25 09:05 AM
Joined: Oct 2005 Posts: 9,207 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 9,207 Ontario, Canada	Quote A "melanized" steel gear may be a better choice workWhat about race only application? The bronze gears wore not only on the teeth but also on the bottom surface of the gear. So it needs to be pulled to check that - not just "slop" in the teeth. Anything that wears is going into the oil pan - and may find a new home along the way - or into the oil pump. In my "opinion", "minimal" wear is totally unacceptable. But when bronze was the only option with a billet cam . well, you know the rest. Melonized is a great leap forward HOWEVER, they're adamant that one should not be used on a cam that has already been using a bronze gear - in other words, to be used with a NEW cam only.

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: Stanton] #3282607 01/14/25 10:14 AM 01/14/25 10:14 AM
Joined: Mar 2006 Posts: 10,155 MI, usa dvw I Live Here
dvw I Live Here Joined: Mar 2006 Posts: 10,155 MI, usa	Originally Posted by Stanton Quote A "melanized" steel gear may be a better choice workWhat about race only application? The bronze gears wore not only on the teeth but also on the bottom surface of the gear. So it needs to be pulled to check that - not just "slop" in the teeth. Anything that wears is going into the oil pan - and may find a new home along the way - or into the oil pump. In my "opinion", "minimal" wear is totally unacceptable. But when bronze was the only option with a billet cam . well, you know the rest. Melonized is a great leap forward HOWEVER, they're adamant that one should not be used on a cam that has already been using a bronze gear - in other words, to be used with a NEW cam only. Mine has the bottom of the gear slightly trimmed. It runs a hardened washer from a Torrington between the gear and the bushing. The bearings always look good on inspection. The bushed roller lifters have even in the motor for over 750 runs (320/830 pressure). Can’t detect any wear issues caused by the bronze particles. Doug

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: dvw] #3282623 01/14/25 11:32 AM 01/14/25 11:32 AM
Joined: Jan 2003 Posts: 31,330 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,330 Oregon	My guess is that not all blocks are machined perfectly since we see engines that come in for rebuilds with gears worn down to sharp edges. We also see gears that look okay after a couple of seasons. I'd say that if you're running a bronze gear you have to check it annually until you are positive that you have a good block or a good setup that doesn't wear it out. I don't think it matters at all if someone else has good luck or bad luck with gear life. I think it depends 100% on how well your block was machined.

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: AndyF] #3282638 01/14/25 12:52 PM 01/14/25 12:52 PM
Joined: Feb 2014 Posts: 1,758 central il. S second 70 top fuel
second 70 top fuel S Joined: Feb 2014 Posts: 1,758 central il.	Here's 1 I pulled out of a street hemi solid roller. I have no idea how many miles where on it. Replaced it with a melanized with no problems. I don't know how the heck would the soft brass would have any effect on the cam or the new gear.

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: second 70] #3282658 01/14/25 02:56 PM 01/14/25 02:56 PM
Joined: Dec 2021 Posts: 1,479 Loudoun County, VA Brad_Haak pro stock
Brad_Haak pro stock Joined: Dec 2021 Posts: 1,479 Loudoun County, VA	Despite the warnings, I've heard of at least one person on this board who switched from a bronze gear to a melonized gear after the engine had some miles on it. Last I recall, they saw no wear issues when checked later. In my case I swapped 'em out after the new engine's dyno session. I hated the idea of the bronze getting spread all through the engine over time, even though a lot of foiks say their wear issues are "reasonable". From what little street use I've driven since, it looks fine, FWIW. 2021 Challenger 6.4L Scat Pack 1320 100% stock: 1.680, 11.894 at 113.75 (DA 175 ft) weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft) 1973 Challenger 452 ci street/strip [2008] pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: Brad_Haak] #3282659 01/14/25 03:02 PM 01/14/25 03:02 PM
Joined: Jan 2003 Posts: 4,248 Canada Kam*Kuda master
Kam*Kuda master Joined: Jan 2003 Posts: 4,248 Canada	I had a lot more gear wear with 20w50 vs 10w30 1970 Barracuda Convertible 1968 Satellite Street Strip car 1654.5 Mustang 1955 Land Rover

Re: BRASS GEAR OIL DRIVE FOR ROLLER [Re: Kam*Kuda] #3282663 01/14/25 03:25 PM 01/14/25 03:25 PM
Joined: Aug 2003 Posts: 44,135 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 44,135 Bend,OR USA	I'm thinking the soft brass gear is sacrificial in the high RPM, high valve spring pressure, drag race world, maybe not :work I have had some brass gears wear and some that didn't, me thinks AndyF is correct on his thinking on stock Mopar blocks variance on finish machine Last edited by Cab_Burge; 01/14/25 03:26 PM. Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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