spoolxr6 Member 312 Member For: 14y 2m 25d Posted 04/12/10 11:27 AM Share Posted 04/12/10 11:27 AM When doing a power run on a 4 speed T, what gear do they use? Do they leave it in Drive or do you select a gear or leave it in sports mode? Does gear selection alter the final readings? Link to comment Share on other sites More sharing options...
icer Banned 2,335 Member For: 15y 6m 22d Gender: Male Location: Aspendale, Vic. Posted 04/12/10 11:58 AM Share Posted 04/12/10 11:58 AM in a btr / 4speed, 3rd gear. in a zf 6 speed, they use 4th gear. Link to comment Share on other sites More sharing options...
tray_182005 Member 1,226 Member For: 15y 6m 1d Gender: Male Location: Wee Waa/NSW Posted 04/12/10 08:51 PM Share Posted 04/12/10 08:51 PM Depends on the power of the manualMine was done in 5 gear Link to comment Share on other sites More sharing options...
Benny Member 1,869 Member For: 21y 6m 3d Gender: Male Location: Newcastle Posted 04/12/10 09:40 PM Share Posted 04/12/10 09:40 PM The best gear to use is a gear that has a ratio closest to 1:1. Manual selection of this gear in an auto is required to stop the transmission up shifting while doing the power run.Benny Link to comment Share on other sites More sharing options...
tonyv EPC Member Donating Members 1,598 Member For: 16y 2m 5d Gender: Male Posted 04/12/10 11:15 PM Share Posted 04/12/10 11:15 PM zf uses 3rd also, correct if wrong.All my power runs even at other dynos were 3rd Link to comment Share on other sites More sharing options...
discostig Manual mode ________________________ All day, erryday Donating Members 13,798 Member For: 17y 2m 15d Gender: Male Location: Probably above atmospheric pressure Posted 05/12/10 12:00 AM Share Posted 05/12/10 12:00 AM Simon at XFT said they use 3rd on the ZF as 4th gets to far too high a road speed and starts climbing up the dyno. As said above I see 3rd a lot on other dynos too for the 6 speed auto. Link to comment Share on other sites More sharing options...
Adam Here since the start... Lifetime Members 10,282 Member For: 21y 9m 14d Gender: Male Location: Victoria Posted 05/12/10 12:30 AM Share Posted 05/12/10 12:30 AM Does gear selection alter the final readings?It will alter the torque output, but not the power. Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 8m 12d Gender: Male Location: @ my laptop Posted 05/12/10 12:56 AM Share Posted 05/12/10 12:56 AM We use 3rd gear in the 4 speed and for the ZF we use 4th.We have found that these cars will make more power in a 3rd gear run on the ZF when the car is not pushing big power.Some dyno operators will use 3rd gear on the ZF as their dyno may not have a fast enough road speed to run the ZF in 4thOn manuals we use 4th gear as that is 1:1 Link to comment Share on other sites More sharing options...
spoolxr6 Member 312 Member For: 14y 2m 25d Posted 05/12/10 01:14 AM Author Share Posted 05/12/10 01:14 AM Thanks for your input guys. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now