HEI springs - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-12-2006, 02:49 PM
Registered User
 
Join Date: Nov 2005
Location: NC
Posts: 154
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
HEI springs

Does anyone know where I can get stock replacement springs for the HEI mechanical advance? Mine is coming in much too early and too fast, just slightly above idle it starts moving with the vac disconnected. This is for a stock engine, so I was hoping to stay away from the recurve spring kits.

Local auto parts stores have the weight bushings, but no springs.

Thanks,
-Michael

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-12-2006, 03:57 PM
Registered User
 
Last photo:
Join Date: Apr 2005
Location: TX
Posts: 44
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
get the kit from summit or jegs, the kit will come with soft to hard springs so you can custom taylor your setup. also it will come with weight to replace them too if you want to.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-12-2006, 04:57 PM
Registered User
 
Join Date: Nov 2005
Location: NC
Posts: 154
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I was looking at the Summit kit (springs, weights, bushings, and plate), do you know if either set of those springs comes close to the original stiffness? I guess for $5 it's worth a gamble...
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 01-12-2006, 09:29 PM
Jmark's Avatar
Registered User
 
Last photo:
Join Date: Sep 2003
Location: phoenix
Age: 61
Posts: 4,795
Wiki Edits: 0

Thanks: 0
Thanked 3 Times in 3 Posts
Most Checker/Schucks/Kragen auto parts carry the recurve kits too. They have an assortmant of springs in them. Might save a mail order wait.

Mark
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 01-13-2006, 03:25 PM
adryan16's Avatar
Engine Builder Mentee
 
Join Date: Sep 2002
Location: Creston, Iowa
Age: 30
Posts: 215
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I would reccomend O'Reiley's or the sort first. Saves you shipping and the wait. I've put three or four of the inexpensive Mr. Gasket kits in my different distributors, and with all the combinations of springs, there's a lot that you can do to tune on it. Good luck.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 01-13-2006, 03:48 PM
curtis73's Avatar
Hates: Liver. Loves: Diesel
 
Last wiki edit: How to find cheap parts
Last journal entry: 1999-2001: Getting it on the road
Last photo:
Join Date: Dec 2005
Location: Pittsburgh, PA
Age: 40
Posts: 5,128
Wiki Edits: 16

Thanks: 0
Thanked 2 Times in 2 Posts
How about a junkyard? Find a similar application from a similar year and snag the springs (or the whole HEI) from it.

It might be a bit trial and error. There are no cut and dried rules when it comes to HEI curve springs. Over the years weights and springs were farmed out to the lowest bidder and they changed more often than the weather in Chicago. Those spring kits come with their own weights since they can't predict what weights are on your HEI. That's why I maybe suggest getting an HEI from a vehicle that was a similar application. For the most part all of GMs low-po HEIs gave all their advance by 3000 rpms or a little more. The problem is; did they do it with light springs and light weights, or heavy weights/springs? Just snagging the springs might not get you exactly what you need.

Also (just to throw more confusion in the mix) the aftermarket kits are terribly inaccurate. I bought the Accel kit for my HEI and installed their weights and the 3000 rpm springs. On the Sun tester, they had all of their advance in by 900 distributor RPMs or 1800 crank RPMs. That's WAAAY off. I purchased a Mallory kit and they had a 2800 combo that actually gave all of its advance by 2000 on the crank. In the end since I had access to the Sun tester, I just dug through the parts bin and found several matched springs that "looked" right and tried them until I got the right curve.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 01-13-2006, 04:18 PM
Registered User
 
Join Date: Nov 2005
Location: NC
Posts: 154
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for all the suggestions. I've gone ahead and ordered the kit from Summit. I don't have any O'Reillys or that chain around here. Just Advanced Auto and Napa. Junkyards around here just have late model imports.

Looking at their catalog and reading the PDF instructions for the kit, I think I can find something that works. Right now my mechanical advance is coming in almost fully right above idle. I've got the factory specs on the curve, so I hope I can get it to match close enough with a stiffer spring.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 01-13-2006, 08:31 PM
Member
 
Join Date: Nov 2004
Location: PA
Age: 71
Posts: 367
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by curtis73
How about a junkyard? Find a similar application from a similar year and snag the springs (or the whole HEI) from it.

It might be a bit trial and error. There are no cut and dried rules when it comes to HEI curve springs. Over the years weights and springs were farmed out to the lowest bidder and they changed more often than the weather in Chicago. Those spring kits come with their own weights since they can't predict what weights are on your HEI. That's why I maybe suggest getting an HEI from a vehicle that was a similar application. For the most part all of GMs low-po HEIs gave all their advance by 3000 rpms or a little more. The problem is; did they do it with light springs and light weights, or heavy weights/springs? Just snagging the springs might not get you exactly what you need.

Also (just to throw more confusion in the mix) the aftermarket kits are terribly inaccurate. I bought the Accel kit for my HEI and installed their weights and the 3000 rpm springs. On the Sun tester, they had all of their advance in by 900 distributor RPMs or 1800 crank RPMs. That's WAAAY off. I purchased a Mallory kit and they had a 2800 combo that actually gave all of its advance by 2000 on the crank. In the end since I had access to the Sun tester, I just dug through the parts bin and found several matched springs that "looked" right and tried them until I got the right curve.
Don't know what you consider low performance, but the GM specs for my '76 'vette L-48, show max centrifugal advance of 22* at between 4200 and 4600 rpm, depending upon auto or manual transmission. The Hi Po L-82 shows a max advance of 16* at 2000 rpm.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Consequences of wrong springs on my heads? TVR383 Engine 6 11-23-2005 10:25 PM
Diffrent Springs? strikingthematch Engine 3 12-09-2004 09:12 PM
HEI Springs Sweet-34 Hotrodding Basics 5 04-14-2004 11:46 PM
Valve Springs GearHead69 Engine 5 07-19-2003 11:00 AM
Do I Need Little HEI Box for New HEI Dist? Mr.56Chevy Electrical 0 12-23-2002 02:38 PM


All times are GMT -6. The time now is 05:03 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.