Slant *       6       Forum
Home Home Home
The Place to Go for Slant Six Info!
Click here to help support the Slant Six Forum!
It is currently Wed Jun 26, 2024 6:28 am

Unanswered topics | Active topics


» » »

All times are UTC-07:00



Post new topic  Reply to topic  Page 7 of 8
  [ 109 posts ]  Go to page Previous 1 … 4 5 6 7 8 Next
  Print view Previous topic | Next topic 
Author Message
Dave M
PostPosted: Fri May 10, 2024 11:22 am 
Offline
SL6 Racer

Joined: Sun Nov 10, 2002 8:49 pm
Posts: 106
Location: Longview Washington
Car Model:
FYI

I was at Oregon Cam this morning picking up some race oil from him and I asked Ken what was one of his bigger cam profiles for the .904 mopar lifter.

Grind #1543
intake 289* duration at .050" .647" with 1.5 .690" with 1.6 rocker arm ratio .026 valve lash
exhaust 289* duration at .050" .650" with 1.5 .693" with 1.6 rocker arm ratio .026 valve lash
lobe separation on this one is 108

Big cam with lots of lift.
Top
   
Reply with quote  
Greg Ondayko
PostPosted: Fri May 10, 2024 12:50 pm 
Offline
Supercharged
User avatar

Joined: Sat Nov 27, 2004 8:03 pm
Posts: 9218
Location: IRWIN PA
Car Model:
Dave M wrote:
FYI

I was at Oregon Cam this morning picking up some race oil from him and I asked Ken what was one of his bigger cam profiles for the .904 mopar lifter.

Grind #1543
intake 289* duration at .050" .647" with 1.5 .690" with 1.6 rocker arm ratio .026 valve lash
exhaust 289* duration at .050" .650" with 1.5 .693" with 1.6 rocker arm ratio .026 valve lash
lobe separation on this one is 108

Big cam with lots of lift.


Is that one in a roller flavor or flat tappet variety?

Thanks Dave & Ken!

_________________
http://www.youtube.com/hyperpack
Image
Top
   
Reply with quote  
Dart270
PostPosted: Sun May 12, 2024 12:49 am 
Offline
Board Sponsor & Moderator
User avatar

Joined: Mon Oct 21, 2002 11:08 am
Posts: 16618
Location: Blacksburg, VA
Car Model:
Gotta be flat tappet, but Dave can verify.

Lou

_________________
Home of Slant6-powered fun machines since 1988
Top
   
Reply with quote  
slantzilla
PostPosted: Sun May 12, 2024 5:02 am 
Offline
Board Sponsor & Moderator
User avatar

Joined: Thu Oct 17, 2002 7:27 pm
Posts: 14276
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Definitely not a lawn mower cam. :mrgreen:

_________________
Official Cookie and Mater Tormentor.
Top
   
Reply with quote  
hyper_pak
PostPosted: Sun May 12, 2024 7:47 am 
Offline
Triple Duece Weber
User avatar

Joined: Tue Nov 23, 2004 6:05 pm
Posts: 2121
Location: Desoto Texas
Car Model: 1972 Dodge Colt
slantzilla wrote:
Definitely not a lawn mower cam. :mrgreen:


What is this fascination with lawn mower cams?

_________________
Hyper_pak
Top
   
Reply with quote  
Greg Ondayko
PostPosted: Sun May 12, 2024 8:02 am 
Offline
Supercharged
User avatar

Joined: Sat Nov 27, 2004 8:03 pm
Posts: 9218
Location: IRWIN PA
Car Model:
People have grass to cut!

_________________
http://www.youtube.com/hyperpack
Image
Top
   
Reply with quote  
Dave M
PostPosted: Sun May 12, 2024 8:53 am 
Offline
SL6 Racer

Joined: Sun Nov 10, 2002 8:49 pm
Posts: 106
Location: Longview Washington
Car Model:
It was a flat tappet for the super x series lawn mower. Only sold in the Pacific Norhtwest.
Top
   
Reply with quote  
Killer6
PostPosted: Sun May 12, 2024 10:39 am 
Offline
EFI Slant 6

Joined: Sat Mar 19, 2016 7:25 pm
Posts: 378
Location: SW PA
Car Model:
Dave M wrote:
It was a flat tappet for the super x series lawn mower. Only sold in the Pacific Norhtwest.

:lol: Here in Seattle East, it grows 4"+/day, & rarely has a chance to dry out. We need a huge mid-range torque curve, :lol: :lol: ...
Top
   
Reply with quote  
Dave M
PostPosted: Sun May 12, 2024 12:31 pm 
Offline
SL6 Racer

Joined: Sun Nov 10, 2002 8:49 pm
Posts: 106
Location: Longview Washington
Car Model:
Well, anyone that know me, knows that I do everything to a slant six that you are not suppose do. With that being said my lawn mower is no different.

I will be removing the flat tappet camshaft from the mower this winter and will be upgrading to a more aggressive roller camshaft.

OC grind number #1542 296* intake 302* exhaust with .824 valve lift.

This should provide more midrange power even suitable for the Seattle area.
Top
   
Reply with quote  
Rick Covalt
PostPosted: Sun May 12, 2024 1:20 pm 
Offline
Board Sponsor & SL6 Racer

Joined: Wed Oct 23, 2002 7:57 pm
Posts: 8422
Location: Waynesboro, Pa.
Car Model: 65 Valiant 2Dr Post
But with our Slant 6 head there is only very small gains in any flow after .550 lift unless someone has found a new mystery head. So wouldn't be much easier on equipment and make just as much power to have the same duration and much lower lift than .697? Just wonderin! :D

_________________
2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!
Image
12.70 @ 104.6
Image
Top
   
Reply with quote  
slantzilla
PostPosted: Sun May 12, 2024 5:52 pm 
Offline
Board Sponsor & Moderator
User avatar

Joined: Thu Oct 17, 2002 7:27 pm
Posts: 14276
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
hyper_pak wrote:
slantzilla wrote:
Definitely not a lawn mower cam. :mrgreen:


What is this fascination with lawn mower cams?


Try to keep up, anything with .550" or less lift belongs in a lawnmower. :mrgreen:

_________________
Official Cookie and Mater Tormentor.
Top
   
Reply with quote  
slantzilla
PostPosted: Sun May 12, 2024 6:12 pm 
Offline
Board Sponsor & Moderator
User avatar

Joined: Thu Oct 17, 2002 7:27 pm
Posts: 14276
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Rick Covalt wrote:
But with our Slant 6 head there is only very small gains in any flow after .550 lift unless someone has found a new mystery head. So wouldn't be much easier on equipment and make just as much power to have the same duration and much lower lift than .697? Just wonderin! :D


This is a guess, and ONLY a guess, but the longer you can keep the valve at or above optimum flow, the more power you can theoretically make.

_________________
Official Cookie and Mater Tormentor.
Top
   
Reply with quote  
Dave M
PostPosted: Sun May 12, 2024 6:36 pm 
Offline
SL6 Racer

Joined: Sun Nov 10, 2002 8:49 pm
Posts: 106
Location: Longview Washington
Car Model:
Sorry...this was just a little Kelso WA humor. I'm not putting a .800 " lift camshaft in my single cylinder, flat head, Brigs & Stratton lawn mower engine.

just some FYI how big OC can make a roller camshaft.
Top
   
Reply with quote  
Greg Ondayko
PostPosted: Sun May 12, 2024 7:27 pm 
Offline
Supercharged
User avatar

Joined: Sat Nov 27, 2004 8:03 pm
Posts: 9218
Location: IRWIN PA
Car Model:
Dave M wrote:
I'm not putting a .800 " lift camshaft in my single cylinder, flat head, Brigs & Stratton lawn mower engine.



I think if you tried to do so, you would bend the valve on the head anyway! :D :D

_________________
http://www.youtube.com/hyperpack
Image
Top
   
Reply with quote  
hyper_pak
PostPosted: Mon May 13, 2024 6:17 am 
Offline
Triple Duece Weber
User avatar

Joined: Tue Nov 23, 2004 6:05 pm
Posts: 2121
Location: Desoto Texas
Car Model: 1972 Dodge Colt
Dave M wrote:
Sorry...this was just a little Kelso WA humor. I'm not putting a .800 " lift camshaft in my single cylinder, flat head, Brigs & Stratton lawn mower engine.

just some FYI how big OC can make a roller camshaft.


How big they can make Roller Cam or Flat Tappet?

I am trying to keep up....

_________________
Hyper_pak
Top
   
Reply with quote  
Display posts from previous:  Sort by  
Post new topic  Reply to topic  Page 7 of 8
  [ 109 posts ]  Go to page Previous 1 … 4 5 6 7 8 Next

» » »

All times are UTC-07:00

Who is online

Users browsing this forum: No registered users and 51 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited