Go Back  Offshoreonly.com > Technical > General Q & A
low compression 548 dyno testing has begun!! >

low compression 548 dyno testing has begun!!

Notices

low compression 548 dyno testing has begun!!

Thread Tools
 
Old 04-02-2017 | 04:41 PM
  #301  
Registered
15 Year Member
 
Joined: Jan 2010
Posts: 617
Likes: 144
From: syracuse ny
Default

Originally Posted by 14 apache
What do you run for dyno muffler? Thanks
I think there is a picture on post #133
green lightning is offline  
Reply
Old 04-02-2017 | 04:49 PM
  #302  
articfriends's Avatar
Thread Starter
Platinum Member
20 Year Member
Platinum Member
 
Joined: Jun 2004
Posts: 7,317
Likes: 1,037
From: frankenmuth michigan
Default

Originally Posted by 14 apache
What do you run for dyno muffler? Thanks
A pair of 5" inlet cheap gibson boat mufflers, they knock noise down pretty good and they dont seem to hurt hp too bad although the torque picked up pretty good with them off

Last edited by articfriends; 04-02-2017 at 04:51 PM.
articfriends is offline  
Reply
Old 04-02-2017 | 05:12 PM
  #303  
14 apache's Avatar
Platinum Member
20 Year Member
Platinum Member
 
Joined: Apr 2005
Posts: 2,150
Likes: 15
From: Northport N.Y.
Default

Thanks for posting the picture like to see what other people use.
14 apache is offline  
Reply
Old 04-02-2017 | 08:33 PM
  #304  
articfriends's Avatar
Thread Starter
Platinum Member
20 Year Member
Platinum Member
 
Joined: Jun 2004
Posts: 7,317
Likes: 1,037
From: frankenmuth michigan
Default

Originally Posted by 14 apache
Thanks for posting the picture like to see what other people use.
I used to have ggbs on my baja, the bolt and clamp weren't tight enough so one blew off in 100 feet of water at 85 mph so i needed mufflers, ggb wasn't answering there phone so i couldnt get another one so i bought these for 400$. Baja ran 99.5 with and without them, when i sold it i took blower motor out and sold the stainless marine 3s. Had these laying around , norm had some gigantic semi mufflers and flex tube we had to drag out and stick on everytime we dynoed. One day i pulled without his and picked up 20hp on my 502 i was dynoing. I stuck these on the 5" pipes coming off the headers and motor only lost 2 or 3 hp and noise was tolerable so i been running them ever since on the dyno.
articfriends is offline  
Reply
Old 04-02-2017 | 08:58 PM
  #305  
articfriends's Avatar
Thread Starter
Platinum Member
20 Year Member
Platinum Member
 
Joined: Jun 2004
Posts: 7,317
Likes: 1,037
From: frankenmuth michigan
Default

Rons tb, i would only consider running one of these if you were using a centrifugal and it made plumbing easier, cost too much hp otherwise.
Attached Thumbnails low compression 548 dyno testing has begun!!-20170402_213516.jpg  
articfriends is offline  
Reply
Old 04-03-2017 | 07:07 AM
  #306  
Registered
 
Joined: Nov 2005
Posts: 4,554
Likes: 3
From: Fredericksburg, Va
Default

Originally Posted by articfriends
Rons tb, i would only consider running one of these if you were using a centrifugal and it made plumbing easier, cost too much hp otherwise.
I thought he had the same one we tried and did not work, but one we tried was a std 4150 style, 3 blade from accel, in testing on LS stuff what you saw with this about right, the victor style intake and 4150TB kicked this ass everytime...
ezstriper is offline  
Reply
Old 04-03-2017 | 08:03 AM
  #307  
articfriends's Avatar
Thread Starter
Platinum Member
20 Year Member
Platinum Member
 
Joined: Jun 2004
Posts: 7,317
Likes: 1,037
From: frankenmuth michigan
Default

Originally Posted by ezstriper
I thought he had the same one we tried and did not work, but one we tried was a std 4150 style, 3 blade from accel, in testing on LS stuff what you saw with this about right, the victor style intake and 4150TB kicked this ass everytime...
He did, he bought this to try as hes considering using these on his 502
articfriends is offline  
Reply
Old 04-03-2017 | 09:49 AM
  #308  
Registered
 
Joined: Aug 2013
Posts: 1,037
Likes: 3
From: FredVegas, Va
Default

So youre saying the ching chang chit are liars about what their T/B flows?

Ya don't say? LMAO
TooLateVTEC is offline  
Reply
Old 04-03-2017 | 03:28 PM
  #309  
articfriends's Avatar
Thread Starter
Platinum Member
20 Year Member
Platinum Member
 
Joined: Jun 2004
Posts: 7,317
Likes: 1,037
From: frankenmuth michigan
Default

Originally Posted by TooLateVTEC
So youre saying the ching chang chit are liars about what their T/B flows?

Ya don't say? LMAO
I didnt buy it, Gimmefuel on here did to test, its a poor copy of the fast which doesn't claim to flow any insane amount to start with!
articfriends is offline  
Reply
Old 04-03-2017 | 04:16 PM
  #310  
Registered
 
Joined: Oct 2010
Posts: 922
Likes: 128
From: Hemlock, MI
Default

Originally Posted by articfriends
I didnt buy it, Gimmefuel on here did to test, its a poor copy of the fast which doesn't claim to flow any insane amount to start with!
It was cheap enough to buy for a dyno test. Was considering it for my rebuilds since I was considering procharger them at a later point. Don't know until you try! This one never had flow claims made with it. Hard to find flow data on any brand. Wilson's 105 mm claimed around 1500 cfm. I figured this at a 102 mm should at least break 1000 cfm easily. Apparently not so much! Might work good on a much lesser engine, just not in this 6700 rpm 548 haha! When I do my rebuilds next winter, we will dyno them at Articfriends place. Probably​ slap it on for squits and giggles since I own it already. We also have the 2200 dominator throttle body as well. I am planning 509's staying at or below 6000 rpm with much less cam than this motor we tested.

In research, whether data is good or bad, it is still data and tells a story!

Last edited by Gimme Fuel; 04-03-2017 at 04:19 PM.
Gimme Fuel is offline  
Reply


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.