|
10-22-2015, 06:04 PM | #71 | |
VIP Member
Join Date: Oct 2002
Location: On a hilltop in Pa.
Posts: 4,223
Likes: 3,103
Liked 6,790 Times in 1,524 Posts
|
Re: Schubeck lifters
Quote:
__________________
Billy Nees 1188 STK, SS World's greatest Under-Achiever! |
|
10-22-2015, 09:23 PM | #72 |
Member
Join Date: Jan 2003
Location: Beaverdam, Va./ Port St. Lucie,Fla.
Posts: 362
Likes: 177
Liked 158 Times in 38 Posts
|
Re: Schubeck lifters
Thank you ! Mr. Southerland
__________________
66W30POST |
10-22-2015, 09:44 PM | #73 | |
VIP Member
Join Date: Feb 2003
Location: Glendale, Arizona
Posts: 2,991
Likes: 693
Liked 1,457 Times in 543 Posts
|
Re: Schubeck lifters
Quote:
|
|
10-22-2015, 10:04 PM | #74 |
Senior Member
Join Date: Jul 2004
Location: Minneapolis
Posts: 788
Likes: 2,890
Liked 370 Times in 102 Posts
|
Re: Schubeck lifters
Exactly, Dwight !!!!!!!!!!!!
__________________
Jerry Heath I/S '93 Cobra FS/J 2010 Mustang "Ebay CJ" |
10-22-2015, 11:19 PM | #75 |
VIP Member
Join Date: Oct 2008
Posts: 2,114
Likes: 1,078
Liked 180 Times in 110 Posts
|
Re: Schubeck lifters
Thanks Dwight.
I am not having valve train fracture problems in Pure Stock. Basically early Stock rules. IMHO be a good idea to moderate the spring rule. Get back to a NTE rating. NASCAR cams are a different breed. Stocker cams are physically smaller. Shorter lift and massive duration never intended. 150 lb closed and 400 open is a good start. Some ratio for Valve size. Just putting it out there. D |
10-23-2015, 09:16 AM | #76 |
VIP Member
Join Date: Oct 2008
Location: Somerset,Ky
Posts: 1,303
Likes: 198
Liked 116 Times in 48 Posts
|
Re: Schubeck lifters
I agree if stock pressure spring rule was left alone in 87 wouldn't need tool steel,ceramic lifters and everything that came after that,was just putting out there the effects of not having the spring pressure to control the valvetrain, if you want to run the aggressive lobes and crank up the RPM then you have to have the spring pressure.
The stockers I build have plenty of spring pressure,they make more runs and require less maintenance than my pure stocker with stock spring pressure does,there valves,guides,spings,valve jobs will last twice as many runs as my pure stocker does.. Mike Taylor 3601 |
10-23-2015, 12:14 PM | #77 | |
VIP Member
Join Date: Dec 2001
Location: Arkansas - In the middle of everything.
Posts: 1,980
Likes: 53
Liked 724 Times in 177 Posts
|
Re: Schubeck lifters
Quote:
__________________
Last edited by Dwight Southerland; 10-23-2015 at 12:17 PM. |
|
10-23-2015, 12:58 PM | #78 |
VIP Member
Join Date: Oct 2008
Posts: 2,114
Likes: 1,078
Liked 180 Times in 110 Posts
|
Re: Schubeck lifters
Hmmm interesting..
Moderating Spring Pressure is a good answer. I like racing..not fixing broken stuff. Using super high springs pressure creates larger catastrophic messes. Someone mentioned they could not even get it off the Dyno. Then required a new rotating assembly. This does not happen anywhere often with Bracket Engines. xHRA's need consider this. Especially the RIO.. Fewer breakdowns during qualifying and competition. D |
10-23-2015, 01:30 PM | #79 |
Member
Join Date: Dec 2013
Posts: 311
Likes: 2
Liked 9 Times in 8 Posts
|
Re: Schubeck lifters
If you have canted heads with 120+ gram valves and crooked pushrods you are going to need valve springs....you inline valve guys with tiny valves and straight pushrod geometry should never break a dam thing.
Its as simple as that 1 spring rule for everybody is not a cure all.... guys that race,.not bracket race the combo will always push the limit watch how much "breakage" Prostock is going to have with a 10,500 rpm limit...should have left that alone also
__________________
__________________ Bill Diehl B200 C/D STK Last edited by Bill Diehl; 10-23-2015 at 01:33 PM. |
10-23-2015, 01:32 PM | #80 |
VIP Member
Join Date: Oct 2008
Location: Somerset,Ky
Posts: 1,303
Likes: 198
Liked 116 Times in 48 Posts
|
Re: Schubeck lifters
Dwight,
I didn't take your post as confrontation or picking on me. Mike Taylor 3601 |
|
|