HOME FORUM RULES CONTACT
     
   
   

Go Back   CLASS RACER FORUM > Class Racer Forums > Stock and Super Stock Tech


Reply
 
Thread Tools Display Modes
Old 09-03-2018, 09:02 PM   #1
Tim H
VIP Member
 
Tim H's Avatar
 
Join Date: Jan 2007
Posts: 1,011
Likes: 891
Liked 430 Times in 142 Posts
Default Solid lifters in Stock

When the rule was changed to allow solid lifters in Stock eliminator engines that were previously hydraulic equipped, did racers change cams or just install solid lifters ? What typically would they set valve lash at ? Not looking for top secret info just a general idea.
I have seen solid cams run in engines (not NHRA stockers) with hydraulic lifters that seemed to work "ok" but never the reverse procedure,
Tim H is offline   Reply With Quote
Old 09-03-2018, 09:53 PM   #2
Dave Noll
Senior Member
 
Dave Noll's Avatar
 
Join Date: Nov 2007
Location: Div. 6, Eastern, WA
Posts: 692
Likes: 2,222
Liked 217 Times in 104 Posts
Default Re: Solid lifters in Stock

Myself, I have just switched lifters. BUT, the pattern on the cam had to appear normal, I lubed the lifters just like installing a new cam. Put break in oil in the pan. Set lash and ran it for a Half hour at 2500. With a hydraulic cam there are no clearance ramps ground into it so I run lash tighter than usual. (under .010)
__________________
Dave Noll, E/FS ,L/SA 6526

Last edited by Dave Noll; 09-04-2018 at 05:34 PM.
Dave Noll is offline   Reply With Quote
Old 09-04-2018, 01:19 PM   #3
Rsmith38
Member
 
Join Date: Mar 2011
Posts: 186
Likes: 0
Liked 28 Times in 15 Posts
Default Re: Solid lifters in Stock

I installed solid lifters on hydraulic cam and was told by a well known cam grinder to set lash at .004 - works fine!
Rsmith38 is offline   Reply With Quote
Old 09-04-2018, 01:50 PM   #4
David Lee
VIP Member
 
Join Date: Oct 2007
Posts: 1,079
Likes: 391
Liked 246 Times in 99 Posts
Default Re: Solid lifters in Stock

has anyone noticed a hp increase or a better et?
David Lee is offline   Reply With Quote
Old 09-04-2018, 04:47 PM   #5
Alan Nyhus
VIP Member
 
Join Date: Dec 2002
Location: Lower Dakota territory
Posts: 1,162
Likes: 1,012
Liked 761 Times in 225 Posts
Default Re: Solid lifters in Stock

Quote:
Originally Posted by David Lee View Post
has anyone noticed a hp increase or a better et?
-With solids, you loose lift at the valve due to the lash under running conditions.

-With true hydraulics, the theoretical lash is '0'. In reality, there is some compression of the retained oil in the lifter. How much? .004? .006? More? less?

And since the lift is checked at '0' lash..... -Al
__________________
"That'll never work....."
Alan Nyhus is offline   Reply With Quote
Old 02-03-2019, 10:22 PM   #6
Rob Petrie E395
VIP Member
 
Join Date: Dec 2007
Location: Woodlawn IL
Posts: 1,093
Likes: 162
Liked 219 Times in 79 Posts
Default Re: Solid lifters in Stock

Going from non shimmed Hydraulic Roller Lifters to solid roller lifters. What would you expect to see as far as performance increase?
Rob Petrie E395 is offline   Reply With Quote
Old 02-04-2019, 06:56 PM   #7
Dan Fahey
VIP Member
 
Dan Fahey's Avatar
 
Join Date: Oct 2008
Posts: 2,115
Likes: 1,078
Liked 179 Times in 110 Posts
Default Re: Solid lifters in Stock

The way I see it...
Solid Lifters allowed an engine to spin tighter with the same Spring.

Over the years (decades) Hydraulics improved with Short Travel Lifters and other modifications to get them to behave more like a Solid Lifter.

Couple questions.
Are Solid Lifters Lighter than Hydraulics?

Do solids allow better ramp rates and duration?

Is there any improvement to valvetrain control?
Dan Fahey is offline   Reply With Quote
Old 02-05-2019, 06:32 PM   #8
Mark Yacavone
Veteran Member
 
Mark Yacavone's Avatar
 
Join Date: Mar 2002
Location: Miles From Nowhere
Posts: 7,393
Likes: 2,563
Liked 4,419 Times in 1,683 Posts
Default Re: Solid lifters in Stock

Minus 4 thou lift not a big issue to me .Probably lose that much on the other side with hydraulics.
Last year, guys were talking .010.
Any more real world, hands on reports about lash from last season?
__________________
We are lucky we don't get as much Government as we pay for..... Will Rogers
Mark Yacavone is offline   Reply With Quote
Old 02-05-2019, 06:55 PM   #9
Nmbr1GMfan
VIP Member
 
Join Date: Aug 2013
Posts: 1,767
Likes: 1,199
Liked 1,957 Times in 492 Posts
Default Re: Solid lifters in Stock

I am in the process of switching from hydraulics to solids on the same cam (originally ground by crane who was of little help to me) (maybe I talked to the wrong guy). Called Bullet, they were very very helpful and instructed me to swap to an "EDM" lifter @ .008 hot. I'm going to tighten the lash from there on the dyno to see if there's any + or - results. I hope there is a peformance improvement for me with lifters, pushrods, rockers and properly setup springs.
__________________
Todd Greene
Nmbr1GMfan is offline   Reply With Quote
Old 02-05-2019, 10:27 PM   #10
Pat6868
Junior Member
 
Join Date: May 2010
Posts: 94
Likes: 5
Liked 66 Times in 21 Posts
Default Re: Solid lifters in Stock

Treating your cam , Nitride or Cryo is worth looking into.
Pat6868 is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -4. The time now is 03:53 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.