MSD Distributer & gear question
07-21-2023 | 06:42 AM
#11
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From: Cortlandt Manor NY
Yeah, the info constantly contradicts itself, Comp cams statement from that article below is perfect example, contrary to THAT statement Cam motion will sell you a billet core hydraulic roller / roller cam and a matching steel gear (they dont say what gear is) and it works OK. Ive also ran the no name 60$ melonized gear from engine pro in a hot street truck on a 8640 steel roller in a SBC and timing has NOT decayed from gear wear in 10,000 miles (also modded the distributors oiling). I have put timing gun on a boat that guy said "slowed down" and timing had decayed from 34 to 22 degrees, pulled his MSD distributor out and found that chinese gear MSD uses scalloped all to hell. His engine builder screwed the pooch on that one.
THIS STATEMENT FROM THAT ARTICLE CONTRADICTS CAM MOTIONS PRACTICES: "If you have a billet steel hydraulic or solid roller cam, your two options are:
1. Bronze distributor gear
2. Composite distributor gear"
THIS STATEMENT FROM THAT ARTICLE CONTRADICTS CAM MOTIONS PRACTICES: "If you have a billet steel hydraulic or solid roller cam, your two options are:
1. Bronze distributor gear
2. Composite distributor gear"
Maybe I toss in a composite and just check it every few hrs or run time but then I assume even marking the distributer I have to toss a light on it every time?
07-21-2023 | 10:24 AM
#13
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From: Virginia Beach
From his other cam thread… it’s an Isky p/n 696275284 and the grind number is RR-265/275 (per Summit).
A quick search showed that it could be built on a cast core… some suggested having it ordered on a steel core. Others commented that it needed a bronze gear or Everwear (melonized) gear. Seems it’s a bit all over the place.
A quick search showed that it could be built on a cast core… some suggested having it ordered on a steel core. Others commented that it needed a bronze gear or Everwear (melonized) gear. Seems it’s a bit all over the place.
07-21-2023 | 04:06 PM
#14
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From: East Tennesseee
I've ran melanized gears on cast iron and 8620 cams and never had any issue at all. I've ran bronze on both and always had wear. So, from experience, I'd recommend the melanized gear and not worry about it. Even if you have to buy one from someone other than MSD so you have piece of mind.
07-22-2023 | 02:11 PM
#15
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Posts: 7,317
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From: frankenmuth michigan
Is it a shiny black? I havent seen a new msd distributor come out of box with a good gear but maybe they changed. A real simple way to tell if any gear is wearing quickly is checking timing. Your new timing chain will settle in right away and youll have to reset timing a degree or so BUT after that it woll pretty much stay consistent.
As far as modding the lower oil band on distributor body, its exactly that. Align distributor to where you will be able to get enough adjustment either way out of body with motor at 20, 30 dgree btdc. Mark body where it touches intake, pull it back out, file or cut a small groove about .050 wide and a little deeper in lower band where it faces where cam gears meet, thats it. I do it while swapping to a good gear on the msd distributors or stock ones. Now it sprays a tiny bit of oil where the gears meet, Smitty
As far as modding the lower oil band on distributor body, its exactly that. Align distributor to where you will be able to get enough adjustment either way out of body with motor at 20, 30 dgree btdc. Mark body where it touches intake, pull it back out, file or cut a small groove about .050 wide and a little deeper in lower band where it faces where cam gears meet, thats it. I do it while swapping to a good gear on the msd distributors or stock ones. Now it sprays a tiny bit of oil where the gears meet, Smitty
