On the Dyno again ! - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Cleveland Tech
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 01-28-2006, 23:03   #1 (permalink)
Registered User
 
xb351coupe's Avatar
 
Join Date: Feb 2005
Location: Sydney
Posts: 343
On the Dyno again !

Ran my car up on the dyno again today. A local shop got a dyno and put on a day for the locals.

Results :

279.8 RWHP (208KW)
441.8 FTLB Torque (599Kn)
__________________
1974 XB GS Coupe - 351C FMX 9". 208RWKW (280RWHP) 12.92 @ 105.9M MPH (28/6/06 WSID)
xb351coupe is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-29-2006, 01:02   #2 (permalink)
Registered User
 
xb351coupe's Avatar
 
Join Date: Feb 2005
Location: Sydney
Posts: 343
Re: On the Dyno again !

Actually that torque figure looks high, would that be right ?
__________________
1974 XB GS Coupe - 351C FMX 9". 208RWKW (280RWHP) 12.92 @ 105.9M MPH (28/6/06 WSID)
xb351coupe is offline   Reply With Quote
Old 01-29-2006, 01:20   #3 (permalink)
Southern Coupe
 
CJR09's Avatar
 
Join Date: Sep 2005
Location: New Zealand
Age: 36
Posts: 215
Re: On the Dyno again !

Quote:
Originally Posted by xb351coupe
Actually that torque figure looks high, would that be right ?

Seems about right to me - gs1973 runs the torque power hirise and was getting 480ftlb torque similar hp??

still pretty impressive numbers in my book
CJR09 is offline   Reply With Quote
Old 01-29-2006, 04:34   #4 (permalink)
Registered User
 
TruBlu351's Avatar
 
Join Date: Apr 2003
Location: Newcastle
Posts: 2,398
Re: On the Dyno again !

Could be a little high. Do you have the actual TRACTIVE EFFORT numbers from the dyno? TQ at the rear wheels depends on tyre diameter and rear diff ratio, which the dyno guy enters in. When this is crunched with the TE, it spits out a RWTQ number.

ie: RWTQ = TE x r (tyre radius) / diff ratio.

The tractive effort number will be "X Newtons" or "Y Pounds". If you're using lbs, you need to use feet for the tyre diam, and when using Newtons, you'll need to plug in metres.

ie: my 260rwhp XD with 4.11's and 265/50x15's makes 1250 lbs of tractive effort. But at the peak TE rpm (will be same as peak torque), it's only making 215rwhp (needed for other equation below).

So...............RWTQ = 1250 x 1.058ft / 4.11 = 321 ft/lbs of RWTQ

Another calculation can be used below (torque is incestually connected to HP)

TQ = HP x 5252 / rpm
HP = TQ x rpm / 5252

ie: TQ = 215 (hp @ peak tq) x 5252 / 3500 (peak tq rpm) = 320 very close to other reading.

It should be in the ball park.
__________________
XE Falcon
393 Tremec TKO 9"
TruBlu351 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Cleveland Tech



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 04:00.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.