how to dyno

pr gt · August 23rd, 2007, 09:42 PM

what's the differnt of dynoing in a manual in 3er and 4th gear?

HMUSN · August 23rd, 2007, 09:46 PM

a clutch and a gear box.

Regency 2007 · August 23rd, 2007, 10:15 PM

I believe they usually dyno 4th gear

06RedfireGT · August 23rd, 2007, 10:31 PM

If its a 5 speed they use 4th gear, thats why its tough for an auto because you have to feather the gas to keep it in the right gear.

05mustang_TT_charged · August 23rd, 2007, 11:15 PM

4th gear in a manual car is a 1:1 ratio from engine to rear end, meaning the rear tires will be spinning close to what the rpm's on the motor is, in an automatic the 3rd gear is the 1:1 ratio

06RedfireGT · August 24th, 2007, 12:04 AM

oh really, good info. thanks.

pr gt · August 24th, 2007, 04:20 PM

so if you dyno on 4th gear you could read more h.p.?

05mustang_TT_charged · August 25th, 2007, 12:49 AM

you won't read more hp, you would read the actual hp your car makes with driveline loss, if you dyno in 3rd with a manual you could see higher numbers because it isn't 1:1 you will have a multiplication through the transmission, but it isn't a true hp reading

August 23rd, 2007, 09:42 PM	#1
pr gt Regular 2006 gt Join Date: May 2007 Location: puerto rico Posts: 56 iTrader: 0 reviews	how to dyno what's the differnt of dynoing in a manual in 3er and 4th gear?

August 23rd, 2007, 09:46 PM	#2
HMUSN Doc 1986 SVO 48.47@ 12.58 Join Date: Nov 2006 Posts: 37,047 iTrader: 11 reviews	a clutch and a gear box. __________________

August 23rd, 2007, 10:31 PM	#4
06RedfireGT One Man Wolf Pack 2006 Mustang GT 13ish....maybe Join Date: Aug 2006 Location: Regulatin On Some OGs Posts: 22,483 iTrader: 2 reviews	If its a 5 speed they use 4th gear, thats why its tough for an auto because you have to feather the gas to keep it in the right gear. __________________ ΜΟΛΩΝ ΛΑΒΕ

August 23rd, 2007, 11:15 PM	#5
05mustang_TT_charged Hardcore Enthusiast 2005 Mustang GT 10.32@137.70 Join Date: Mar 2007 Location: LSU Country Posts: 2,774 iTrader: 0 reviews	4th gear in a manual car is a 1:1 ratio from engine to rear end, meaning the rear tires will be spinning close to what the rpm's on the motor is, in an automatic the 3rd gear is the 1:1 ratio __________________ 350 rwhp and 310 rwtq at 6000 rpms through stock exhaust system 326 cubic inches of Twin Turbocharged hell will be running soon Tuned by Wes @ TPS

August 24th, 2007, 12:04 AM	#6
06RedfireGT One Man Wolf Pack 2006 Mustang GT 13ish....maybe Join Date: Aug 2006 Location: Regulatin On Some OGs Posts: 22,483 iTrader: 2 reviews	oh really, good info. thanks. __________________ ΜΟΛΩΝ ΛΑΒΕ

August 23rd, 2007, 10:15 PM	#3
Regency 2007 Hardcore Enthusiast F-150 FX4 Join Date: May 2007 Location: Memphrica Posts: 1,144 iTrader: 0 reviews	I believe they usually dyno 4th gear

August 24th, 2007, 04:20 PM	#7
pr gt Regular 2006 gt Join Date: May 2007 Location: puerto rico Posts: 56 iTrader: 0 reviews	so if you dyno on 4th gear you could read more h.p.?

August 25th, 2007, 12:49 AM	#8
05mustang_TT_charged Hardcore Enthusiast 2005 Mustang GT 10.32@137.70 Join Date: Mar 2007 Location: LSU Country Posts: 2,774 iTrader: 0 reviews	you won't read more hp, you would read the actual hp your car makes with driveline loss, if you dyno in 3rd with a manual you could see higher numbers because it isn't 1:1 you will have a multiplication through the transmission, but it isn't a true hp reading __________________ 350 rwhp and 310 rwtq at 6000 rpms through stock exhaust system 326 cubic inches of Twin Turbocharged hell will be running soon Tuned by Wes @ TPS

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