upgrading valve springs and stem seals - 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 08-09-2009, 05:27 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
upgrading valve springs and stem seals

i need to change my valve stem seals but i dont want the o ring style i want the umbrella style. i would also like to upgrade my valve springs. they are 350 heads from a 69 camaro. i believe they are single springs with the damper spring.

i have a 268h cam but i never upgraded the spring as it is recommended so i would like to now since i have to replace the stem seals.

i want the umbrella seals because ive heard lots are read lots more that they are the best seal. but i dont know which ones to get. some say machine work required others say its not needed.

as far as valve springs. should i buy single or dual springs. what about a damper? spring rate? bind hight? etc. im not sure what to look for.

what other information do i need to list to help you tell me what i should look for?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 08-09-2009, 05:35 PM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,840
Wiki Edits: 0

Thanks: 1
Thanked 86 Times in 73 Posts
I have installed umbrella seals that came in a Ford gasket set on a SBC with no problems. They just slip over the valve guide boss with nothing to hold them down, but they do a much better job than the OEM "O" ring type. The Perfect Circle type bonnet seals do require machining of the valve guide boss. They have a crimped wire retainer that goes over a groove cut in the boss.

Vince
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-09-2009, 06:41 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
something like this???
http://www.summitracing.com/parts/CCA-504-16/

they just push on and sit inside the spring. but then what time of springs would i use with those?
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-09-2009, 07:13 PM
justold's Avatar
Registered User
 
Join Date: Sep 2003
Location: South Jersey
Age: 66
Posts: 192
Wiki Edits: 0

Thanks: 0
Thanked 4 Times in 4 Posts
I don't remember the part number , but the app is 1957 Cadillac they fit well and they don't interfere with the springs . As far as the springs I can't help you , contact the cam mfg. .
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 08-09-2009, 07:17 PM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 47
Posts: 9,410
Wiki Edits: 0

Thanks: 29
Thanked 473 Times in 430 Posts
Quote:
Originally Posted by elcaminodragster
something like this???
http://www.summitracing.com/parts/CCA-504-16/

they just push on and sit inside the spring. but then what time of springs would i use with those?
That type is what 302 is referring to, but that part # is for 3/8" stems and SBC is(99.8% time) 11/32". The correct size will fit inside a stock diameter spring.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 08-09-2009, 07:42 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by ericnova72
That type is what 302 is referring to, but that part # is for 3/8" stems and SBC is(99.8% time) 11/32". The correct size will fit inside a stock diameter spring.

ok but that style would work for me (just the 11/32")??? and be able to fit under most any spring setup???


here are some pics of the springs that are on my engine now. . . hope they help all of you tell me what i have and what i might be able to get. there are so many options on what kinds of springs to get im lost on what would be good for my engine
Attached Thumbnails
Click image for larger version

Name:	Engine removal 020.jpg
Views:	78
Size:	232.4 KB
ID:	39882   Click image for larger version

Name:	Engine removal 052.jpg
Views:	71
Size:	195.3 KB
ID:	39883  
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 08-09-2009, 07:51 PM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 47
Posts: 9,410
Wiki Edits: 0

Thanks: 29
Thanked 473 Times in 430 Posts
Yes, the seals will fit, your springs are the stock diameter of 1.250", you just need to pick a spring that matches the spring poundage requirements of the cam in that 1.250" diameter.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 08-09-2009, 08:00 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
so 1.250 outside diameter 1 2 or 3 springs? what about a damper? what exactly is a damper anyway???
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 08-09-2009, 08:15 PM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,840
Wiki Edits: 0

Thanks: 1
Thanked 86 Times in 73 Posts
I would toss the dampers, never had em on any engine I have ever built and ran.

Vince
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 08-09-2009, 08:19 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by 302 Z28
I would toss the dampers, never had em on any engine I have ever built and ran.

Vince

what exatly is a damper??? what is its job???
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 08-09-2009, 08:24 PM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 47
Posts: 9,410
Wiki Edits: 0

Thanks: 29
Thanked 473 Times in 430 Posts
Can't pick a spring out of thin air, it has to match what the cam needs for pressure, and how much pressure it needs decides how many sets of coils it has.

The damper is the flatwire wound piece thar sorta looks like a spring inside your current spring(which is called a single spring w/damper, by the way). Damper serves the same purpose as putting you finger up against a vibrating guitar string to kill the harmonic vibration.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 08-09-2009, 08:39 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
i understand that you cant tell me to buy this one or that one. i was asking what i should look for and i got my answer.

i need it to match the cam. i found the papers for my cam and it says to buy these springs http://www.summitracing.com/parts/CCA-981-16/

and i will use these seals http://www.summitracing.com/parts/CCA-502-16/

thank you for all your help everyone i appreciate it greatly
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 08-09-2009, 08:49 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
one more question. . .

do i have to buy the retainers that go with those springs or can i use the ones i currently have???
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 08-09-2009, 09:00 PM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 47
Posts: 9,410
Wiki Edits: 0

Thanks: 29
Thanked 473 Times in 430 Posts
You can use the stock retainers just fine. I might suggest replacing the locks just for insurance, they're what holds everything together. Nothing fancy, new stock replacements are enough.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 08-09-2009, 09:05 PM
elcaminodragster's Avatar
70 El Camino aka FRANKENSTEIN
 
Last photo:
Join Date: Feb 2007
Location: California
Age: 26
Posts: 738
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
ok cool.

i just read a little bit on the seals being crushed due to a lift higher then .420 is that true??? because my cam is .454 lift

is there anything else i should replace just to be on the safe side??? push rods? rocker arms?
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
Valve Stem Seals mightycarlo10 Engine 5 05-16-2009 08:38 PM
Valve Lash adjustment hiball Engine 36 05-11-2009 10:12 AM
GM fast burn heads batman09 Engine 1 10-26-2004 09:32 AM
Valve Stem Seals? Grant209 Engine 19 03-02-2004 03:09 PM
valve stem seals HQ Pete Engine 2 04-02-2002 12:04 AM


All times are GMT -6. The time now is 07:06 PM.


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.