|
03-26-2018, 01:04 PM | #1 |
Senior Member
Join Date: Jan 2015
Posts: 590
Likes: 1,431
Liked 559 Times in 158 Posts
|
PAC springs valve spring locators?
Having a problem with a new set of springs PAC 1409X being installed on my 882 heads. I will need either locators or a different retainer to get the correct installed height and 200 lb seat pressure.
Problem is I cant find anyone that makes either a spring locator with a .760” inside diameter and 1.25” outside diameter with an .840” valve spring inside diameter. Does anyone make something like this or is there another solution we are missing? Thanks Rich |
03-26-2018, 01:48 PM | #2 |
Senior Member
Join Date: Feb 2009
Posts: 934
Likes: 358
Liked 167 Times in 77 Posts
|
Re: PAC springs valve spring locators?
plus or minus machined locks from crane or comp cams can help... if u use plus .050'' locks you have to watch the retainer to underside of rocker. roller rockers there should be sufficient clearance there....what is the required installed height and what r u getting presently?
|
03-26-2018, 02:01 PM | #3 |
Senior Member
Join Date: Jan 2015
Posts: 590
Likes: 1,431
Liked 559 Times in 158 Posts
|
Re: PAC springs valve spring locators?
We got 1.90” with the retainer and 140 lbs with no shim. We can shim it up to 180 but not much material left to locate the springs then
|
03-26-2018, 03:17 PM | #4 |
Senior Member
Join Date: Feb 2009
Posts: 934
Likes: 358
Liked 167 Times in 77 Posts
|
Re: PAC springs valve spring locators?
a retainer providing less installed height and/or -.050'' locks should get you down to 1.800''. leave the bottom alone to help keep the spring located properly.
|
03-26-2018, 07:18 PM | #5 |
Senior Member
Join Date: Jan 2015
Posts: 590
Likes: 1,431
Liked 559 Times in 158 Posts
|
Re: PAC springs valve spring locators?
Thanks Class Racers and Jim Marshall and Jim Lewis for getting me squared away!
|
03-26-2018, 07:51 PM | #6 |
Member
Join Date: Nov 2005
Location: Waldorf Md
Posts: 225
Likes: 10
Liked 29 Times in 16 Posts
|
Re: PAC springs valve spring locators?
Rich,
Just want to add that it would be a good idea to get the same brand keepers as your retainers. I have seen a bunch of cases lately where locks from one manufacturer do not properly fit another's retainer etc. And this is not no-name stuff. You would think that any 7 degree lock should fit any 7 degree retainer but it is not the case.
__________________
Bill Koustenis |
03-26-2018, 08:24 PM | #7 |
Senior Member
Join Date: Jan 2015
Posts: 590
Likes: 1,431
Liked 559 Times in 158 Posts
|
Re: PAC springs valve spring locators?
Thanks Bill, yes we are using matched retainers and keepers from the same manufacturer
|
03-27-2018, 07:36 AM | #8 |
Live Reporter
Join Date: Oct 2004
Location: Hickory, Ky
Posts: 10,449
Likes: 1,746
Liked 10,058 Times in 2,087 Posts
|
Re: PAC springs valve spring locators?
Sometimes machining a new part is necessary to get the locator to fit the head. For some of us its not a Chevrolet world.
|
03-27-2018, 10:17 AM | #9 |
VIP Member
Join Date: Apr 2003
Location: Tulsa, Oklahoma
Posts: 1,610
Likes: 3,492
Liked 704 Times in 305 Posts
|
Re: PAC springs valve spring locators?
|
|
|