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Re: CompCams 911 springs with stock retainers? [Re: gdonovan] #1720811
01/05/15 02:33 AM
01/05/15 02:33 AM
Joined: Jul 2008
Posts: 259
Khemi, Stygia
Mebsuta Offline
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Khemi, Stygia
I have the original vintage springs and retainers on my 383 RR. I am tempted to go pull a valve cover and look.

Digging through Melling catalogs; they said spring that goes with 383 HP cam is VS-430.

http://www.melling.com/Portals/0/Size%20Charts/Valve%20Spring%20ID%20chart.pdf

Other parts nos. I encountered digging around:

ELGIN or PIONEER PART NUMBER: RV891-X RV981X
PERFECT CIRCLE or CLEVITE PART NUMBER: 212-1209
SEALED POWER PART NUMBER: VS675

http://www.engineproparts.com/downloads/valvespringinterchange.pdf


68 Roadrunner. 383 4-spd. Beat up.
Re: CompCams 911 springs with stock retainers? [Re: Mebsuta] #1720812
01/05/15 03:22 AM
01/05/15 03:22 AM
Joined: Jul 2008
Posts: 259
Khemi, Stygia
Mebsuta Offline
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Here they are, to the best of my knowledge, original springs and retainers from 1968 383 4-spd RR. Wowee Kazowee! (the shafts and rockers are from 1990).

According to my plastic RCBS calipers, retainer diameter is 1.330 or so, spring OD is 1.490-1.500 or so.



68 Roadrunner. 383 4-spd. Beat up.
Re: CompCams 911 springs with stock retainers? [Re: Supercuda] #1720813
01/05/15 08:16 AM
01/05/15 08:16 AM
Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan Offline OP
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Quote:

It says all the "newer" engines.

Hmm, looking up a 60 300 with a 413 shows a smaller diameter valve spring than a 70 300 with a 440. The 70 should have fit the 911 springs just fine, 1.494" outside diameter on the Sealed Power spring.




When was the DC handout published, the mid 70's? In the context of the info from the sheet, the author was just finishing discussing the max wedge engines. I assume "newer engines" refers to ones made after that point.

Looking at further info before bed it states the 383-2 and 383-4 uses the same valve spring and the next bump in spring pressure is when you step up to the 383-4-RR 335hp engine.




"I think its got a hemi"
Re: CompCams 911 springs with stock retainers? [Re: Mebsuta] #1720814
01/05/15 08:25 AM
01/05/15 08:25 AM
Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan Offline OP
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Quote:

I have the original vintage springs and retainers on my 383 RR. I am tempted to go pull a valve cover and look.

Digging through Melling catalogs; they said spring that goes with 383 HP cam is VS-430.

http://www.melling.com/Portals/0/Size%20Charts/Valve%20Spring%20ID%20chart.pdf

Other parts nos. I encountered digging around:

ELGIN or PIONEER PART NUMBER: RV891-X RV981X
PERFECT CIRCLE or CLEVITE PART NUMBER: 212-1209
SEALED POWER PART NUMBER: VS675

http://www.engineproparts.com/downloads/valvespringinterchange.pdf




Looking at some of these choices it looks like they have a smaller inner diameter like the factory spring which I suspect is the real issue. The Compcam spring has the largest ID and rattles around like dice in a cup since the ID really isn't keeping it centered.




"I think its got a hemi"
Re: CompCams 911 springs with stock retainers? [Re: Torq37] #1720815
01/05/15 09:19 AM
01/05/15 09:19 AM
Joined: Jan 2003
Posts: 75,106
A Banana Republic near you.
JohnRR Offline
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Quote:

Crane 99839 would be a better choice for stock replacement. Stock diameter and far less seat pressure than 911




That spring wouldn't be a DROP IN either and needs to be installed at something like 1.800 , so he would need retainers , seat cups ... which need the spring seats machine flat and guides turned down or modify the cups ... and shims ... I have these springs in 2 different sets of heads.

Re: CompCams 911 springs with stock retainers? [Re: gdonovan] #1720816
01/05/15 09:26 AM
01/05/15 09:26 AM
Joined: Jan 2003
Posts: 75,106
A Banana Republic near you.
JohnRR Offline
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Quote:

Quote:

I have the original vintage springs and retainers on my 383 RR. I am tempted to go pull a valve cover and look.

Digging through Melling catalogs; they said spring that goes with 383 HP cam is VS-430.

http://www.melling.com/Portals/0/Size%20Charts/Valve%20Spring%20ID%20chart.pdf

Other parts nos. I encountered digging around:

ELGIN or PIONEER PART NUMBER: RV891-X RV981X
PERFECT CIRCLE or CLEVITE PART NUMBER: 212-1209
SEALED POWER PART NUMBER: VS675

http://www.engineproparts.com/downloads/valvespringinterchange.pdf




Looking at some of these choices it looks like they have a smaller inner diameter like the factory spring which I suspect is the real issue. The Compcam spring has the largest ID and rattles around like dice in a cup since the ID really isn't keeping it centered.




Gary the ID is what you are really concerned with , correct fitting retainers should almost SNAP into the spring, that is what is going to help keep the spring from walking around.

I did have one of those crane springs noted above break on me after a few hours of run time , they had been assembled on the heads and not ever installed on an engine for about 5 years but finally were put on a running engine . I have heard the same about comp 911's too on breakage so I won't run those anymore either.

Re: CompCams 911 springs with stock retainers? [Re: JohnRR] #1720817
01/05/15 10:33 AM
01/05/15 10:33 AM
Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan Offline OP
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Quote:



Gary the ID is what you are really concerned with , correct fitting retainers should almost SNAP into the spring, that is what is going to help keep the spring from walking around.





This is what has me concerned the most, not so much the OD of the spring. All the springs I have done in the past 30+ years were either snug on the retainer or fit with very little movement.

I dread calling the vendor this morning, I told my best friend if I ever suggest ordering from them again to punch me in the nuts hard.

Hard habit to break but I have been dealing with them on and off since the 80's and it seems like the last few years there is always a cockup of one sort or another.




"I think its got a hemi"
Re: CompCams 911 springs with stock retainers? [Re: gdonovan] #1720818
01/05/15 12:07 PM
01/05/15 12:07 PM
Joined: Jan 2003
Posts: 75,106
A Banana Republic near you.
JohnRR Offline
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I think ebven on a stock spring the retainer is a little sloppy , the ID is just as , if not a little more important , than the od in the fitment. You should have seem how bad the fit of the springs on my hemi crate motor were , I think MP just sent all their NS! parts left over from the late 70's to Cummins and told them to just put it together. the ID of the springs was something to the order of .060 bigger than the retainer .

Re: CompCams 911 springs with stock retainers? [Re: JohnRR] #1720819
01/05/15 12:49 PM
01/05/15 12:49 PM
Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan Offline OP
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Quote:

I think ebven on a stock spring the retainer is a little sloppy , the ID is just as , if not a little more important , than the od in the fitment.




Actually with the factory spring that came off there is no notable movement at all.




"I think its got a hemi"
Re: CompCams 911 springs with stock retainers? [Re: gdonovan] #1720820
01/05/15 01:27 PM
01/05/15 01:27 PM
Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan Offline OP
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My choices order the sealed power springs and wait 2 weeks or order compcams 744 retainers.

I'm leaning towards the SP springs, I don't need all the spring pressure for a stocker style cam.




"I think its got a hemi"
Re: CompCams 911 springs with stock retainers? [Re: gdonovan] #1720821
01/05/15 01:41 PM
01/05/15 01:41 PM
Joined: Jun 2006
Posts: 5,168
CT
GTX MATT Offline
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Quote:

I dread calling the vendor this morning, I told my best friend if I ever suggest ordering from them again to punch me in the nuts hard.

Hard habit to break but I have been dealing with them on and off since the 80's and it seems like the last few years there is always a cockup of one sort or another.




Start with an M?


Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
Re: CompCams 911 springs with stock retainers? [Re: GTX MATT] #1720822
01/09/15 07:40 PM
01/09/15 07:40 PM
Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan Offline OP
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Springs going back, Sealed Power units on order.




"I think its got a hemi"
Re: CompCams 911 springs with stock retainers? [Re: gdonovan] #1720823
01/17/15 01:52 PM
01/17/15 01:52 PM
Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan Offline OP
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Quote:

Springs going back, Sealed Power units on order.




The saga continues... Will update Monday.

Last edited by gdonovan; 01/17/15 02:09 PM.



"I think its got a hemi"
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