Auto Tranny Questions - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

95auto · 03-23-2003, 02:22 AM

how strong are the autos that are in our cars? i have been told by a few people that they will hold 400 hp without any problems, anybody know?

what is the deal with the "nismo approved" transmission free mod? the clip that you unplug, does that hurt anything, i cant find anything about it besides the post on this board.

any help would be great, thanks
adam

DuffMan · 03-23-2003, 03:36 AM

The auto is not really that strong. The fastest auto 240 I know had a lot of tranny upgrades before reaching 400 hp.

AKADriver · 03-23-2003, 03:49 PM

The auto is not as strong as the manual... there's no real set limit to what it can take, but they are known to break sooner than the 5 speeds.

The "free mod" involves unplugging the dropping resistor for the transmission fluid pressure regulator solenoid. More transmission fluid pressure means faster, harder shifts. It might wear out the clutch packs in the trans a bit faster. I wouldn't leave it unplugged in traffic. It's a neat little trick to pull at the dragstrip though.

*Jeff240sx* · 03-23-2003, 04:52 PM

I was told by Don Nimi a long time ago that the auto was good to 350rwhp. The 5-speed is good untill 450rwhp or so, if driven nicely.
Also.. Level10.com does valvebody upgrades on the tranny, and can install a higher stall torque convertor.
-Jeff

03-23-2003, 02:22 AM	#1
95auto Join Date: Sep 2002 Posts: 36 Trader Rating: (0) Feedback Score: 0 reviews	Auto Tranny Questions how strong are the autos that are in our cars? i have been told by a few people that they will hold 400 hp without any problems, anybody know? what is the deal with the "nismo approved" transmission free mod? the clip that you unplug, does that hurt anything, i cant find anything about it besides the post on this board. any help would be great, thanks adam

03-23-2003, 04:52 PM	#4
Jeff240sx I hate you too... Join Date: Jul 2001 Location: Tampa, FL Age: 42 Posts: 5,828 Trader Rating: (0) Rides Gallery: Jeff240sx Feedback Score: 0 reviews	I was told by Don Nimi a long time ago that the auto was good to 350rwhp. The 5-speed is good untill 450rwhp or so, if driven nicely. Also.. Level10.com does valvebody upgrades on the tranny, and can install a higher stall torque convertor. -Jeff __________________ Whatup?

03-23-2003, 03:36 AM	#2
DuffMan Post Whore! Join Date: Oct 2001 Location: in a cardboard box Posts: 2,517 Trader Rating: (0) Feedback Score: 0 reviews	The auto is not really that strong. The fastest auto 240 I know had a lot of tranny upgrades before reaching 400 hp.

03-23-2003, 03:49 PM	#3
AKADriver Post Whore! Join Date: May 2002 Location: Springfield, VA Age: 43 Posts: 3,517 Trader Rating: (1) Feedback Score: 1 reviews	The auto is not as strong as the manual... there's no real set limit to what it can take, but they are known to break sooner than the 5 speeds. The "free mod" involves unplugging the dropping resistor for the transmission fluid pressure regulator solenoid. More transmission fluid pressure means faster, harder shifts. It might wear out the clutch packs in the trans a bit faster. I wouldn't leave it unplugged in traffic. It's a neat little trick to pull at the dragstrip though.