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Author
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Topic: Dist. Gear Gone Bad
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perk
Gearhead Posts: 254
From: Staley,nc
Registered: Sep 2000
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posted 06-24-2001 04:22 AM
   
Hi guys !
My new 351W ate the gear off a new reman dist.What would cause this?
Engine has a roller cam,It's also a '69 block and we are using a duraspark dist. made for a '86 351w block.Could this be the problem?Thanks,,,,,,, !perk!
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Dave_C
Gearhead Posts: 256
From: Gadsden, Al
Registered: Aug 99
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posted 06-24-2001 10:59 AM
With a roller cam you must use a steel distributor gear. The one on the reman dist is prob a cast iron gear. All the cam companies sell a steel gear that will work. Later, David Cole
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MrXerox
Gearhead Posts: 106
From: Oklahoma, Oklahoma, USA
Registered: Nov 2000
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posted 06-24-2001 11:42 AM
When does one need to use a bronze gear? I thought you needed to use a bronze gear with roller cams? By the way perk, been there, done that. Might as well pull her back apart and replace all the bearings because I thought my motor was okay till I went to install oil restrictors and all the bearings were showing copper  [This message has been edited by MrXerox (edited 06-24-2001).]
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Dave_C
Gearhead Posts: 256
From: Gadsden, Al
Registered: Aug 99
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posted 06-24-2001 12:16 PM
The steel gear should be used on a street application. It will last. The bronze gear is a race only part for solid roller cams that sacrifices itself to the cam and 500+lb valve spring pressures. The bronze also has some "give" to it. It is softer and can take an inpact without breaking. The steel is much harder, making it last, but it is more brittle and needs to be used with more sane spring pressures. Keep the spring pressure under 350 lbs with a steel gear.The 5.0L HO engines from 85-95 were equipped fromthe factory with a steel gear. The 351W didn't get a roller until almost the end of production. (94 I think). non of the Duraspark equipped 351W had a roller, so no steel gear. Later, David Cole
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perk
Gearhead Posts: 254
From: Staley,nc
Registered: Sep 2000
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posted 06-24-2001 04:12 PM
Thanks guys.
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perk
Gearhead Posts: 254
From: Staley,nc
Registered: Sep 2000
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posted 06-25-2001 10:43 PM
One more ???. could or would the gear wear out in 1 day (about 6 1/8 mile passes and 160 road miles).
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Moneymaker
Administrator Posts: 8543
From: Lyons, IL, USA
Registered: May 99
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posted 06-26-2001 12:53 AM
Yes! It could wear out in an hour. ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link
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MrXerox
Gearhead Posts: 106
From: Oklahoma, Oklahoma, USA
Registered: Nov 2000
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posted 06-26-2001 12:25 PM
So, a bronze gear should not be used in a solid roller street application? I hope it can because it was hell putting this gear on my MSD for my 351C 
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Moneymaker
Administrator Posts: 8543
From: Lyons, IL, USA
Registered: May 99
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posted 06-26-2001 03:22 PM
You can use a bronze or steel gear. ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link
IP: Logged |
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