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Valve Spring Retainer for 906 Heads. #1200477 03/20/12 09:33 PM 03/20/12 09:33 PM
Joined: Jan 2003 Posts: 2,179 Walton, Indiana TimS OP top fuel
TimS OP top fuel Joined: Jan 2003 Posts: 2,179 Walton, Indiana	I've got an original set of 1968 906 heads off my Super Bee that have never been apart. They have the 1.5 OD spring with inner damper spring. They also have a retainer that is slightly smaller OD than the spring. Is this wrong or unusual. I thought maybe the factory used a smaller retainer on top when the damper spring was used that reduced spring movement side to side. Anyone know for sure if the smaller retainer was or was not used on the 1.5" OD spring? I bought a set of 1.55 10 degree retainers from Mancini at the Mopar swap last week but the inner lip is too large and doesn't fit my spring. Thanks. 1968 Barracuda Fastback 318-2BBL 904 2.76 Frost Blue Survivor 1970 Roadrunner 440+6 BBL 727 AT 4.10 SG Dana Blue Fire Metallic 1971 Cuda 340-4 BBL 4spd 3.91 SG Curious Yellow 1972 Barracuda 318-2 BBL 904 AT 3.23 1 Legger Tor Red/White Vinyl Top 2007 Dodge Ram 1500 5.7 Hemi AT Patriot Blue 2011 Dodge Challenger RT 5.7 Hemi 6spd 392 SG Triple Black 2014 Dodge Charger RT Max AWD 5.7 Hemi AT 305 Billet Silver

Re: Valve Spring Retainer for 906 Heads. [Re: TimS] #1200478 03/20/12 10:53 PM 03/20/12 10:53 PM
Joined: Oct 2005 Posts: 8,874 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,874 Ontario, Canada	Nothing wrong with the retainers being slightly smaller than the spring.

Re: Valve Spring Retainer for 906 Heads. [Re: TimS] #1200479 03/21/12 01:38 AM 03/21/12 01:38 AM
Joined: Jan 2003 Posts: 75,020 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,020 U.S.S.A.	Yes that is the stock retainer, retainers are sized to fit snuggly , almost snap , into the ID of the spring. It doesn't need to be the OD of the spring.

Re: Valve Spring Retainer for 906 Heads. [Re: JohnRR] #1200480 03/21/12 07:38 AM 03/21/12 07:38 AM
Joined: Jan 2003 Posts: 2,179 Walton, Indiana TimS OP top fuel
TimS OP top fuel Joined: Jan 2003 Posts: 2,179 Walton, Indiana	Quote: Yes that is the stock retainer, retainers are sized to fit snuggly , almost snap , into the ID of the spring. It doesn't need to be the OD of the spring. I was just surprised that the retainer didn't cover the spring. I looked at my 69 Bee, which does have the wrong heads the lopo 516's for an earlier 361/383, and they have retainers that cover the 1.5 springs but no dampers. I'm positive however about these heads for my 68 Bee never being apart. Just thought that smaller OD was odd. Thanks. 1968 Barracuda Fastback 318-2BBL 904 2.76 Frost Blue Survivor 1970 Roadrunner 440+6 BBL 727 AT 4.10 SG Dana Blue Fire Metallic 1971 Cuda 340-4 BBL 4spd 3.91 SG Curious Yellow 1972 Barracuda 318-2 BBL 904 AT 3.23 1 Legger Tor Red/White Vinyl Top 2007 Dodge Ram 1500 5.7 Hemi AT Patriot Blue 2011 Dodge Challenger RT 5.7 Hemi 6spd 392 SG Triple Black 2014 Dodge Charger RT Max AWD 5.7 Hemi AT 305 Billet Silver

Re: Valve Spring Retainer for 906 Heads. [Re: Stanton] #1200481 03/22/12 07:42 AM 03/22/12 07:42 AM
Joined: Jan 2003 Posts: 2,179 Walton, Indiana TimS OP top fuel
TimS OP top fuel Joined: Jan 2003 Posts: 2,179 Walton, Indiana	Quote: Nothing wrong with the retainers being slightly smaller than the spring. These are 1.33" OD compared to 1.50". With the damper springs I'm thinking that will allow for less movement side to side. Suppose that's why the factory did that. 1968 Barracuda Fastback 318-2BBL 904 2.76 Frost Blue Survivor 1970 Roadrunner 440+6 BBL 727 AT 4.10 SG Dana Blue Fire Metallic 1971 Cuda 340-4 BBL 4spd 3.91 SG Curious Yellow 1972 Barracuda 318-2 BBL 904 AT 3.23 1 Legger Tor Red/White Vinyl Top 2007 Dodge Ram 1500 5.7 Hemi AT Patriot Blue 2011 Dodge Challenger RT 5.7 Hemi 6spd 392 SG Triple Black 2014 Dodge Charger RT Max AWD 5.7 Hemi AT 305 Billet Silver

Re: Valve Spring Retainer for 906 Heads. [Re: TimS] #1200482 03/22/12 09:46 AM 03/22/12 09:46 AM
Joined: Jan 2003 Posts: 75,020 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,020 U.S.S.A.	Quote: Quote: Nothing wrong with the retainers being slightly smaller than the spring. These are 1.33" OD compared to 1.50". With the damper springs I'm thinking that will allow for less movement side to side. Suppose that's why the factory did that. I think you are wasting way to many brain cells trying to figure out why the factory did it. Chew on this , it's cheaper to make a smaller part because it uses less metal , manufacturers are all about spending as little as possible to maximize profit .

Re: Valve Spring Retainer for 906 Heads. [Re: JohnRR] #1200483 03/22/12 01:10 PM 03/22/12 01:10 PM
Joined: Jan 2003 Posts: 2,179 Walton, Indiana TimS OP top fuel
TimS OP top fuel Joined: Jan 2003 Posts: 2,179 Walton, Indiana	Quote: Quote: Quote: Nothing wrong with the retainers being slightly smaller than the spring. These are 1.33" OD compared to 1.50". With the damper springs I'm thinking that will allow for less movement side to side. Suppose that's why the factory did that. I think you are wasting way to many brain cells trying to figure out why the factory did it. Chew on this , it's cheaper to make a smaller part because it uses less metal , manufacturers are all about spending as little as possible to maximize profit . Probably so. They added the damper spring so needed to retrieve that cost from something else. 1968 Barracuda Fastback 318-2BBL 904 2.76 Frost Blue Survivor 1970 Roadrunner 440+6 BBL 727 AT 4.10 SG Dana Blue Fire Metallic 1971 Cuda 340-4 BBL 4spd 3.91 SG Curious Yellow 1972 Barracuda 318-2 BBL 904 AT 3.23 1 Legger Tor Red/White Vinyl Top 2007 Dodge Ram 1500 5.7 Hemi AT Patriot Blue 2011 Dodge Challenger RT 5.7 Hemi 6spd 392 SG Triple Black 2014 Dodge Charger RT Max AWD 5.7 Hemi AT 305 Billet Silver

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