Who has seen 918 beehive springs do this?
Registered User
Joined: Apr 2007
Posts: 549
From: Lancaster, Texas
I talked to AFR many, many years ago about springs. They were going on some 8 second quarter mile engines I use to build for a several teams in the Chicago area.
I was told then that new springs should always be placed in a bench vise (protected on both ends with something like pieces of 2"x4") and compressed to coil bind.
Let them sit that way , bound up, for several minutes, then installed. I was told this serves to stress relieve them; they'd last longer and hold pressure much better.
Now, remember, this was told to me close to 20 years ago, so things may have changed since then. Might be a good idea to give 'em a call and see if that advice is still valid with the new springs of today.
You could also give Reher & Morrison a call in Arlington, TX and ask them how they keep they're springs alive. I've talked to them several times over the years -those guys LOVE to talk engines - and they were always very helpful to me.
Hope this helps.
Jake
I was told then that new springs should always be placed in a bench vise (protected on both ends with something like pieces of 2"x4") and compressed to coil bind.
Let them sit that way , bound up, for several minutes, then installed. I was told this serves to stress relieve them; they'd last longer and hold pressure much better.
Now, remember, this was told to me close to 20 years ago, so things may have changed since then. Might be a good idea to give 'em a call and see if that advice is still valid with the new springs of today.
You could also give Reher & Morrison a call in Arlington, TX and ask them how they keep they're springs alive. I've talked to them several times over the years -those guys LOVE to talk engines - and they were always very helpful to me.
Hope this helps.
Jake
Registered User
Joined: Jan 2006
Posts: 494
From: Rolla/Blue Springs, Missouri
I was told then that new springs should always be placed in a bench vise (protected on both ends with something like pieces of 2"x4") and compressed to coil bind.
Let them sit that way , bound up, for several minutes, then installed. I was told this serves to stress relieve them; they'd last longer and hold pressure much better.
Let them sit that way , bound up, for several minutes, then installed. I was told this serves to stress relieve them; they'd last longer and hold pressure much better.
Registered User
Joined: May 2007
Posts: 3
I think the valve springs (918s) speak for themselves. See pic and thread:
YES, 10 of 16 were broken on my engine.
http://forums.corvetteforum.com/show....php?t=1715377
YES, 10 of 16 were broken on my engine.
http://forums.corvetteforum.com/show....php?t=1715377
Last edited by 11sec_z06; May 30, 2007 at 03:10 AM. Reason: Wrong URL
Registered User
Joined: Jun 2004
Posts: 411
I think the valve springs (918s) speak for themselves. See pic and thread:
YES, 10 of 16 were broken on my engine.
http://http://forums.corvetteforum.c....php?t=1715377
YES, 10 of 16 were broken on my engine.
http://http://forums.corvetteforum.c....php?t=1715377
Registered User
Joined: Dec 1969
Posts: 3,499
From: PORTLAND, OR, MULTNOMAH
I'm sure that the springs are great----that they are the latest in design and all that stuff, but.....when I first heard of a valve spring that was shaped like a bee hive, I said to myself...."self" it will be cold day in hell when I buy something like that unless someone --other than the manufacturer) can give me a factual run-down on why a behive shaped spring should be superior to the traditional spring.
I know that everyone jumps on the ole band wagon when something like this comes out and before long they are the greatest thing since suspenders.
But no thanks. I shall stay with the tried and true until it is proven beyond doubt that behive springs are the have-to have spring.JMHO
I know that everyone jumps on the ole band wagon when something like this comes out and before long they are the greatest thing since suspenders.
But no thanks. I shall stay with the tried and true until it is proven beyond doubt that behive springs are the have-to have spring.JMHO
Registered User
Joined: Jun 2003
Posts: 3,557
From: Carol Stream, Il.
I'm sure that the springs are great----that they are the latest in design and all that stuff, but.....when I first heard of a valve spring that was shaped like a bee hive, I said to myself...."self" it will be cold day in hell when I buy something like that unless someone --other than the manufacturer) can give me a factual run-down on why a behive shaped spring should be superior to the traditional spring.
I know that everyone jumps on the ole band wagon when something like this comes out and before long they are the greatest thing since suspenders.
But no thanks. I shall stay with the tried and true until it is proven beyond doubt that behive springs are the have-to have spring.JMHO
I know that everyone jumps on the ole band wagon when something like this comes out and before long they are the greatest thing since suspenders.
But no thanks. I shall stay with the tried and true until it is proven beyond doubt that behive springs are the have-to have spring.JMHO
Registered User
Joined: Mar 1999
Posts: 2,068
From: Kernersville, NC
I think the valve springs (918s) speak for themselves. See pic and thread:
YES, 10 of 16 were broken on my engine.
http://http://forums.corvetteforum.c....php?t=1715377
YES, 10 of 16 were broken on my engine.
http://http://forums.corvetteforum.c....php?t=1715377
Corrected link....
Registered User
Joined: Oct 2005
Posts: 501
From: Monmouth County, NJ
The question in my mind now is, what springs to use now? I'm beginning to plan out my valve train for a cam swap and the 918's were going to be the springs to use. I just don't want to run any risks, I keep seeing these break.
Registered User
Joined: Jun 2003
Posts: 3,557
From: Carol Stream, Il.
No you don't, their a popular spring and are hard to beat for many applications. There was a bad batch once, but that can happen. Even if it happens again, it would not shy me away from these springs.