worn brass dist gear

Old 01-14-2012, 06:30 PM
  #1  
scott0408
Junior Member
SHOW GUEST
Thread Starter
 
Join Date: Mar 2004
Posts: 5
Default worn brass dist gear

running a 421 sbc after a year of racing doing some work on it & found the dist gear worn not extremly bad but still makes me worry about it any ideas
scott0408 is offline  
Old 01-14-2012, 07:17 PM
  #2  
zipper06
Senior Member
RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
Posts: 2,890
Default

They are usually good for about a yr. The biggest cause for wear is the oil pump, high pressures causes more wear. It's not uncommon. You can usually pick that up with a timing light is will show eratic timing when you check the timing. Hope this helps.

Zip.
zipper06 is offline  
Old 01-16-2012, 07:08 AM
  #3  
itsabird
Senior Member
RACING JUNKIE
 
Join Date: Dec 2007
Location: ohio
Posts: 812
Default

Yep common thing with brass gear, as zip said about year of hard running you will see ware,
itsabird is offline  
Old 01-23-2012, 12:09 AM
  #4  
bluedawg357
Member
CRAFTSMAN
 
Join Date: Dec 2010
Location: anchorage alaska
Posts: 56
Default

Any one running the new comp cams composite distributor gear.
bluedawg357 is offline  
Old 01-23-2012, 07:39 AM
  #5  
coolracing
Senior Member
MASTER BUILDER
 
Join Date: Jan 2008
Location: Yooper
Posts: 168
Default

Im with Zip we always replaced them every year!
coolracing is offline  
Old 01-24-2012, 06:29 AM
  #6  
oldandtired
Senior Member
RACING JUNKIE
 
oldandtired's Avatar
 
Join Date: Dec 2008
Location: Sugar Hill, GA
Posts: 1,370
Default

Originally Posted by bluedawg357
Any one running the new comp cams composite distributor gear.
I'm running it. The pin hole is only drilled on one side to allow you to finish it with your distributor shaft. Early gears were breaking because of the slight offset in distributor shaft hole.
I ran bronze gears and changed them at 80-90 runs. Bronze shavings in the oil filter. (See Zips comment above)
oldandtired is offline  
Old 01-24-2012, 06:54 AM
  #7  
cncmotorsports
Senior Member
MASTER BUILDER
 
Join Date: Apr 2003
Location: Brookings South Dakota
Posts: 244
Default

Originally Posted by bluedawg357
Any one running the new comp cams composite distributor gear.
We have been using them for 2 years, They work great with every camshaft.

Eliminates the need to replace brass gears every year.
cncmotorsports is offline  
Old 01-24-2012, 12:04 PM
  #8  
zipper06
Senior Member
RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
Posts: 2,890
Default

I don't know if all the cam companies are useing them but i've got a Bullit 4/7 swap (big bump) sm/blk cam that has a cast iron distributor gear and rear bearing pinned and bolted to the billet roller. i was told i coud use a steel gear or a Bronze distributor gear on it. I'm asumming they are doing this to save the cam in case someone doesn't use Bronze gear on their race engine.

Zip.
zipper06 is offline  
Old 01-21-2015, 01:13 PM
  #9  
HiredGun7
Junior Member
SHOW GUEST
 
Join Date: Dec 1969
Posts: 4
Default

I cut an oil feed slot in base of distributor body right above and before where the gears mesh. Bronze gears now last the life of the engine with almost zero wear. I ran one roller cam over 100,000 miles of combined street and strip use.
HiredGun7 is offline  
Old 01-21-2015, 01:49 PM
  #10  
BigBlockMark
Senior Member
MASTER BUILDER
 
Join Date: Mar 2014
Posts: 208
Default

That sounds like a good tip. Any way you can elaborate on this modification or maybe get a diagram or picture on this forum or at another location?
BigBlockMark is offline  

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service