Author Topic: Distributor Weights and Springs  (Read 1272 times)

tmodel66

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Distributor Weights and Springs
« on: March 08, 2012, 05:26:16 PM »
'69 L48 4 speed. I bought a used distributor and I think somebody has tinkered with the weights and springs. Where can I buy a new set of weights and springs to put it back to stock performance?
Daniel  
'69 SS 350/4 speed  Fathom Green--POP

L78 steve

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Re: Distributor Weights and Springs
« Reply #1 on: March 08, 2012, 06:47:42 PM »
I wouldn't just change parts. Send it to a Dist. guy and see where its at.
69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C
70 Nova L78 Blk. Cherry,Sandalwood,M21,02B

Mike S

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Re: Distributor Weights and Springs
« Reply #2 on: March 08, 2012, 10:17:35 PM »
I have seen the springs modified and you can get stock aftermarket replacement springs with the correct rate.
What happened to the weights?

Mike
67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Restored

rally

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Re: Distributor Weights and Springs
« Reply #3 on: March 08, 2012, 10:26:30 PM »
Send your distributor to Jerry MacNeish. He can fix all your issues, great workmanship.

tmodel66

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Re: Distributor Weights and Springs
« Reply #4 on: March 09, 2012, 12:59:23 AM »
I have seen the springs modified and you can get stock aftermarket replacement springs with the correct rate.
What happened to the weights?

Mike

One spring broke and I got to looking and the weights have been ground on.  I was hoping to get a set of Delco weights and springs but I can't find any at the parts house.
Daniel  
'69 SS 350/4 speed  Fathom Green--POP

Marty

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Re: Distributor Weights and Springs
« Reply #5 on: March 09, 2012, 04:04:19 AM »
Used distributors at swap meets are $5-10. Maybe cheaper to do that for parts. Martin
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tmodel66

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Re: Distributor Weights and Springs
« Reply #6 on: March 09, 2012, 04:18:12 AM »
Thanks Marty !  Hadn't thought about that. I think I know where one is at right now.
Daniel  
'69 SS 350/4 speed  Fathom Green--POP

JohnZ

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Re: Distributor Weights and Springs
« Reply #7 on: March 09, 2012, 03:44:34 PM »
I have seen the springs modified and you can get stock aftermarket replacement springs with the correct rate.
What happened to the weights?

Mike

One spring broke and I got to looking and the weights have been ground on.  I was hoping to get a set of Delco weights and springs but I can't find any at the parts house.

Weights and springs haven't been available from GM for over 20 years; most guys who have Sun machines and rebuild distributors (like Jerry M.) have a stash of them. The weights in aftermarket "kits" aren't hardened, and they usually only have three generic types of springs. As Marty noted, used distributors are the best source of GM weights and springs.
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Mike S

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Re: Distributor Weights and Springs
« Reply #8 on: March 09, 2012, 04:20:15 PM »
I have seen the springs modified and you can get stock aftermarket replacement springs with the correct rate.
What happened to the weights?

Mike

One spring broke and I got to looking and the weights have been ground on.  I was hoping to get a set of Delco weights and springs but I can't find any at the parts house.

Weights and springs haven't been available from GM for over 20 years; most guys who have Sun machines and rebuild distributors (like Jerry M.) have a stash of them. The weights in aftermarket "kits" aren't hardened, and they usually only have three generic types of springs. As Marty noted, used distributors are the best source of GM weights and springs.

 I wasn't implying that they can be had from GM. But with today's gas quality, low octane and the absence of lead, the stock spring rates are a moot point for driving so using a modified rate to change the curve profile will likely change the springs anyhow unless the intent is to have museum piece.

Mike
67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Restored

KurtS

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Re: Distributor Weights and Springs
« Reply #9 on: March 09, 2012, 07:38:29 PM »
Agree, you don't want the stock springs in there. Way too slow of an advance curve.
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tmodel66

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Re: Distributor Weights and Springs
« Reply #10 on: March 10, 2012, 04:59:42 PM »
Agree, you don't want the stock springs in there. Way too slow of an advance curve.
I was just needing something to put in it to get started. Then I'll map my advance and set it up to my engine. I know I'll have to change the springs because I'm running a small cam.
Daniel  
'69 SS 350/4 speed  Fathom Green--POP

1971ls6

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Re: Distributor Weights and Springs
« Reply #11 on: March 11, 2012, 01:23:42 AM »
Go out and buy the mr gasket 927 spring kit and use one gold and one silver spring, this should give you all of your advance in by 2500-2800. The weights in the kits are not good, look for a set of original ones. I tried them in all combinations on my distributor machine, and the silver and gold combo comes out as the best most of te time
69 Copo 12.95@113 mph, 2.20 60ft on polyglas
71 LS6 vette 12.31@118 mph PSMCDR

tmodel66

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Re: Distributor Weights and Springs
« Reply #12 on: March 11, 2012, 01:48:24 AM »
Thanks !! I got a set of weights today. I'll get on this first thing Monday.
Daniel  
'69 SS 350/4 speed  Fathom Green--POP