DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    melonized vs bronze distributor gear
Go
New
Find
Notify
Tools
Reply
  
melonized vs bronze distributor gear
 Login/Join
 
<DOTracer>
posted
Was just looking at the bronze distributor gear and it's showing some wear. No telling how many years it's been run and how many runs, but it's due for replacement along with the cap & rotor. It's a MSD crank trigger distributor btw (.500" ID gear).

So, I have heard of and seen where there is a melonized iron gear that is supposed to be compatible with the billet roller cam gear.

Not being familiar with them, do I make the switch or just stick with the Bronze?

Also, what brand?

I see MSD has one listed in their marine catalog. Other brands I've found are Crane, Lunati and Comp Cams.
 
Reply With QuoteReport This Post
DRR Pro
posted Hide Post
Never heard of it....BRONZE it is..
 
Posts: 1265 | Location: USA | Registered: December 04, 2008Reply With QuoteReport This Post
DRR S/Pro
Picture of Big Steve
posted Hide Post
Why change what already works
 
Posts: 2448 | Location: Moving back to the door side | Registered: April 30, 2010Reply With QuoteReport This Post
DRR Sportsman
Picture of TD3550
posted Hide Post
I always considered the gear a maint item with proper end-play maint. Just like checking the PG band every 25 runs.
 
Posts: 1409 | Location: Under a Truck | Registered: August 23, 2013Reply With QuoteReport This Post
DRR Elite
posted Hide Post
I have used the same composite gear on my car for more than a decade. Never pick up any bronze in the oil filter.


Foxtrot Juliet Bravo
 
Posts: 6421 | Location: Illinois | Registered: July 08, 2004Reply With QuoteReport This Post
<DOTracer>
posted
Thanks everyone, bronze it is!
 
Reply With QuoteReport This Post
DRR Trophy
posted Hide Post
That composite gear is a maintenance item too!! It will more than likely break at the worst possible time lol
 
Posts: 73 | Location: Lake Worth Fl. | Registered: December 20, 2008Reply With QuoteReport This Post



DRR Sportsman
Picture of SonnyJames
posted Hide Post
Stick with bronze. Wink
 
Posts: 680 | Location: Consistently researching inconsistencies | Registered: September 04, 2001Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
have always got melonized and never had an issue or thought about it after installation.



Configuration: 3350#, 582 C.I.,

60 - 1.24
1/8 - 5.53@ 126MPH
1/4 - 8.73@ 159MPH



3700#+210lb driver, FULL interior, through mufflers, 10.5 tire.
60'-1.333 (IN 4000ft DA! Joisy Math excluded; 1.25sec using JOISY MATH.) Wink
1/4 - 9.60@144MPH

 
Posts: 1450 | Location: St Marys | Registered: January 12, 2004Reply With QuoteReport This Post
DRR Sportsman
Picture of SonnyJames
posted Hide Post
If you are willing to throw the dice and hope that your high volume/high pressure pump with 20/50 doesn’t wear thru the heat treat coating on the gear that makes it “melonized” and into your high dollar roller cam then by all means roll away. Rolled my cam right in the trash.
 
Posts: 680 | Location: Consistently researching inconsistencies | Registered: September 04, 2001Reply With QuoteReport This Post
DRR Elite
posted Hide Post
Used a melonized gear, the same melonized gear with everyone one of the 3 roller cams in the 468 in my Chevelle from 1999 to 2007 without issue. First bronze distributor gear was on the distributor supplied by Sunset when they built the 522.
 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Pro
Picture of Alaskaracer
posted Hide Post
I used a melodized gear I got from Lunati all the way up until I went with my front mount belt driven distributor. It looked like it barely had any wear on it. Buddy of mine back in Denver runs the same gear on his stuff, supercharged deal, been running the same gear for last 7 seasons, and will be running it this year if things ever get going....


Mark Goulette
Owner/Driver of the Livin' The Dream Racing dragster
www.livinthedreamracing.com
"Speed kills but it's better than going slow!"
Authorized Amsoil Retailer
 
Posts: 1503 | Location: Back home in Alaska! | Registered: February 13, 2011Reply With QuoteReport This Post
DRR Top Comp
posted Hide Post
quote:
Originally posted by SonnyJames:
If you are willing to throw the dice and hope that your high volume/high pressure pump with 20/50 doesn’t wear thru the heat treat coating on the gear that makes it “melonized” and into your high dollar roller cam then by all means roll away. Rolled my cam right in the trash.


Relatively lightweght oil and clearances to match, I'm gonna roll the dice to start off on the dyno. Any sign of ignition timing going away, melonized gear will be out of there.

I did the mod on the bottom journal on the distributor for continuous proprietary oiling of the two gears in question as well.

Street Strip pump gas compression 496 can't have a bronze, unless it has to.

8620 billet cam core.

We'll see, I'll have the findings in a few days.

The spring to bypass at the highest rate, is installed in the pump as well.


 
Posts: 9398 | Location: Madeira Beach Fl. | Registered: June 12, 2018Reply With QuoteReport This Post
  Powered by Social Strata  
 

DragRaceResults.Com    Bracket Talk    Bracket Talk Forum  Hop To Forum Categories  Tech Talk - by Abruzzi    melonized vs bronze distributor gear

© DragRaceResults.com 2024