Like Tree0Likes

CrazyHorse where are the results???

Reply
Old 04-16-2002, 11:23 AM
  #31
pb
Charter Member
Charter Member
 
pb's Avatar
 
Join Date: Feb 2001
Location: Lemont, IL
My Boats: 1997 Sunsation Aggressor, 2002 Regal 3060 Commodore
Posts: 278
Default

Crazyhorse,
The specs for the CS1139 is the exact cam my builder suggested and installed in my motor. Your desktop dyno numbers just confirmed EXACTLY what he said it would be for RPM and HP. However, his claim on the torque side was around 450 ft.lbs. Would an exhaust valve size of 1.72 as opposed to 1.88 have a decreasing affect on the torque numbers? If yes that would explain the lower number. By the way my C.R is 9.7:1.

Paul
pb is offline  
Reply With Quote
Old 04-16-2002, 05:37 PM
  #32
Registered
 
Crazyhorse's Avatar
 
Join Date: Jan 2001
Location: Holland MI
My Boats: 38 Cigarette flat-deck
Posts: 3,140
Default

I'd have to guess that the 1.72 exhaust is going to reduce the torque somewhat, but even running the smaller valve size through the desktop dyno shows about 480 for torque. It's also possible that your engine guy is planning on setting the cam up on a different intake centerline angle. That would also account for the difference. Of course it's always possible my 29 dollar version of DT is a little off.

Last edited by Crazyhorse; 04-16-2002 at 05:43 PM.
Crazyhorse is offline  
Reply With Quote
Old 04-16-2002, 09:47 PM
  #33
Charter Member #655
Charter Member
Thread Starter
 
dyno's Avatar
 
Join Date: Dec 2000
Location: Holland, Michigan
My Boats: 1993 Sonic 31ss
Posts: 4,939
Default

Budman I run EMI manifolds with my silent choice.....I did have a set of Lightnings in my Checkmate that I ran through silent choice though....SuperV runs lightnings with teague switchable mufflers ,if I was going to do it again I would go that route....
__________________
If your boat has a sail do you ride a horse to the ramp?
dyno is offline  
Reply With Quote
Old 04-18-2002, 04:10 PM
  #34
Registered
 
cougarman's Avatar
 
Join Date: Jan 2002
Location: Michigan
My Boats: 1986 Cougar US-1 46'
Posts: 2,765
Default Thanks dyno

Dyno,

Thanks for your help and input, I will be talking to him this weekend. Looks like this would be a really good way for him to go.

Thanks again

Cougarman
cougarman is offline  
Reply With Quote
Old 04-18-2002, 08:11 PM
  #35
Registered
 
Crazyhorse's Avatar
 
Join Date: Jan 2001
Location: Holland MI
My Boats: 38 Cigarette flat-deck
Posts: 3,140
Default

Whether he goes with the Lightnings or the EMI, I'm sure he'll be more than happy with the results. Dyno's boat really came to life with the engine and EMI exhaust upgrades, and SuperV should have a good running package with his freshened engines.
Crazyhorse is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dyno
General Boating Discussion
0
11-22-2002 06:48 AM
dyno
General Boating Discussion
6
10-22-2002 08:11 PM
Tinkerer
General Boating Discussion
0
06-10-2002 11:22 PM
jafo
General Boating Discussion
2
03-27-2002 12:12 PM
General Boating Discussion
1
02-24-2002 08:27 PM



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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 07:19 PM.


Copyright 2011 OffShoreOnly. All rights reserved.