Trans hump gets very hot - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

carnagexxxx · 10-22-2006, 12:51 AM

I have a strange problem that I was wondering if anyone has experienced on their car. I have a '93 coupe manual trans. After maybe 5 minutes of normal driving, the transmission hump gets real hot. Its basically right where my right leg is. Has anyone heard of this?

Teknolust72 · 10-22-2006, 01:27 AM

My S14 does that too, but only when I drive for a while, maybe like over 45 minutes. It gets pretty hot by the gas pedal, the center console, and seeps up through the shift boot. I was thinking it may be the exhaust manifold.

Slidin240Wayz · 10-22-2006, 01:52 AM

Nothing out of the ordinary. It gets hot. Just have to deal with it.

Carlos

carnagexxxx · 10-23-2006, 01:07 PM

Sounds like the problem I am having. I took the carpeting out and I don't drive the car very long to see how hot it really gets.

swwifty · 10-23-2006, 01:14 PM

it's from the exhaust header/piping.

i took the carpet out of my 240 (track/weekend car so it doesn't matter)

I then proceeded to burn my feet at a track day.

I bought some heatshielding that sticks to the underside of the car to keep my feet from melting.

trybal · 10-23-2006, 01:45 PM

yeah my foot gets really really hot when i drive for awhile to, i thought it was just the floor heater vent.. ?? haha my bad

LB.Motoring · 10-23-2006, 01:48 PM

my buddy rocks burnt shoes

pr240sx · 10-23-2006, 02:25 PM

happens to me in my s13 too, even when I was NA

even with double carpetting insulation.

Its from the exhaust, but also radiates to the tranny.

Next time the tranny is down, will cover the area with some heat shield of some sort.

Brian · 10-23-2006, 02:30 PM

haha where do you think the catalytic converter is?

pr240sx · 10-23-2006, 09:09 PM

right under the driver seat, not under the gas pedal, toward the tranny.

wootwoot · 10-23-2006, 09:43 PM

my downpipe use to get my feet really hot. Just throw some insulation around down there. It'll show her.

Jay Dee M · 10-23-2006, 10:41 PM

It's funny that I noticed this too and I thought that something was wrong with my car. But I guess it happens to everyone's 240.

sikS1LVIA · 10-23-2006, 11:35 PM

ya same shit happens to me my legs get so fuking hot its good in the winter blows in the summer

sw20>>s14 · 10-24-2006, 02:34 AM

"trans hump"...haha, i like that...

carnagexxxx · 10-24-2006, 11:58 PM

Well I guess I'm not the only one! It sounds like a good idea once I take the engine out to put some heat shield down there. I figured it was the transmission getting REALLY overworked.

nissanhpower · 10-25-2006, 12:06 AM

might be something to do with your heat shield

theslows13 · 10-25-2006, 09:26 AM

i had this prob but only when the torque converter on the auto died... after the 5 spd swap, no heat issues

speedstar01 · 10-25-2006, 10:44 AM

i have a 91 240 HB and my hump gets very hot. almost uncomfortable after a few hours of driving (did it from Iowa to NY) with no cruise and in under 20 hrs! why? cuz i can and more importantly cuz i love my nissan :P

anyway at first i thought it was due to the lousy new carpeting that was installed in my car car before i bought it. my car also didnt come with floormats.(i thought that maybe they forgot to lay down a lil insulation underneath my gas pedal foot and esp near my hump my HUMP MY HUMP!! golly Fergie is a hottie...anyway... i also had a test pipe welded in when i installed my catback exhuast.....

to solve the heat problem i "borrowed" an extra Mazda6 rear passenger floor mat and place it right on my drivers side floor. not only does it match my black interior...it also looks snazzy super cool now that i have a plush and inviting floormat shielding my size 12 feet....and now i dont suffer anymore because it was rough. my kicks would seriously feel as if they were on fire and i was like "man im getting damn sweaty driving this sweet car". maybe it was the excitement of driving a 240?!??? or maybe the rubber soles in my Circas were getting melted to my heels!!!

Problem Solved

tacotacotaco · 10-25-2006, 11:38 AM

Yeah i have a fully gutted interior. I have to put blue tape on my heel to stop my heel from burning. It gives that "I drive" look to your style

g6civcx · 10-25-2006, 08:03 PM

Nomex shoes.

carnagexxxx · 09-14-2007, 01:00 PM

I hate to bring back a dead thread but I have a funny bit to share. My girlfriend recently drove my car for an extended period of time. After she was done doing what she needed to do she takes her sneaker off, shows me the damage, and wouldn't you know that the S.O.B. melted about 1/4 off of the sole.

Once I get some free time I am going to try to write up a post on how to prevent this from happening without being too ghetto.

hayaimoto · 09-14-2007, 01:17 PM

This is a very common problem amongst the s-chassis guys, its a little worst to have an sr20det as well. What I found out to help is first insulating that tranny "hump" with heat wrap. Not through the inside of the car but in the tranny "hump" area itself. I strongly recommend this with the motor or transmission of out the car. Then if your are SR20DET powered, wrap the exhaust elbow and downpipe with heat wrap as well. After I performed these steps, My car didn't become a shoe melter no more.

Tops* · 09-14-2007, 11:58 PM

carnagexxxx, thanks for bringing this thread back up to the top. I was wondering for some time if it was my tranny or my exhaust. I'm SR powered and it's definitely not as bad as some people on here but the heat creeps through to my shift knob. Oh well, I guess I'll just have a nice hand warmer this winter...

10-22-2006, 12:51 AM	#1
carnagexxxx Zilvia Member Join Date: Sep 2006 Location: weirdoville Age: 43 Posts: 244 Trader Rating: (-1) Feedback Score: -1 reviews	Trans hump gets very hot I have a strange problem that I was wondering if anyone has experienced on their car. I have a '93 coupe manual trans. After maybe 5 minutes of normal driving, the transmission hump gets real hot. Its basically right where my right leg is. Has anyone heard of this?

10-22-2006, 01:52 AM	#3
Slidin240Wayz Post Whore! Join Date: Jan 2005 Location: Everywhere Age: 40 Posts: 5,427 Trader Rating: (9) Feedback Score: 9 reviews	Nothing out of the ordinary. It gets hot. Just have to deal with it. Carlos __________________ Support Zilvia by purchasing a sticker!

10-23-2006, 01:48 PM	#7
LB.Motoring Post Whore! Join Date: Jul 2006 Location: SòCal♥ Age: 38 Posts: 5,840 Trader Rating: (1) Rides Gallery: LB.Motoring Feedback Score: 1 reviews	my buddy rocks burnt shoes __________________ Robby Leuer

10-23-2006, 02:30 PM	#9
Brian Post Whore! Join Date: Jan 2003 Location: usa Posts: 12,840 Trader Rating: (54) Rides Gallery: Brian Feedback Score: 54 reviews	haha where do you think the catalytic converter is? __________________ http://bhworld.wordpress.com/

10-23-2006, 09:43 PM	#11
wootwoot Post Whore! Join Date: Jan 2004 Location: sarasota florida biatch Age: 39 Posts: 3,850 Trader Rating: (0) Feedback Score: 0 reviews	my downpipe use to get my feet really hot. Just throw some insulation around down there. It'll show her. __________________ I'm from Florida so I'm probably a bit more strange than you

10-22-2006, 01:27 AM	#2
Teknolust72 Nissanaholic! Join Date: Mar 2005 Location: SoCal Posts: 1,748 Trader Rating: (40) Feedback Score: 40 reviews	My S14 does that too, but only when I drive for a while, maybe like over 45 minutes. It gets pretty hot by the gas pedal, the center console, and seeps up through the shift boot. I was thinking it may be the exhaust manifold.

10-23-2006, 01:07 PM	#4
carnagexxxx Zilvia Member Join Date: Sep 2006 Location: weirdoville Age: 43 Posts: 244 Trader Rating: (-1) Feedback Score: -1 reviews	Sounds like the problem I am having. I took the carpeting out and I don't drive the car very long to see how hot it really gets.

10-23-2006, 01:14 PM	#5
swwifty Zilvia Member Join Date: Jul 2005 Location: Atlanta, GA Posts: 197 Trader Rating: (8) Feedback Score: 8 reviews	it's from the exhaust header/piping. i took the carpet out of my 240 (track/weekend car so it doesn't matter) I then proceeded to burn my feet at a track day. I bought some heatshielding that sticks to the underside of the car to keep my feet from melting.

10-23-2006, 01:45 PM	#6
trybal Zilvia Junkie Join Date: Nov 2005 Location: Seattle wa Posts: 299 Trader Rating: (0) Feedback Score: 0 reviews	yeah my foot gets really really hot when i drive for awhile to, i thought it was just the floor heater vent.. ?? haha my bad

10-23-2006, 02:25 PM	#8
pr240sx Zilvia Addict Join Date: Jan 2002 Posts: 627 Trader Rating: (0) Feedback Score: 0 reviews	happens to me in my s13 too, even when I was NA even with double carpetting insulation. Its from the exhaust, but also radiates to the tranny. Next time the tranny is down, will cover the area with some heat shield of some sort.

10-23-2006, 09:09 PM	#10
pr240sx Zilvia Addict Join Date: Jan 2002 Posts: 627 Trader Rating: (0) Feedback Score: 0 reviews	right under the driver seat, not under the gas pedal, toward the tranny.

10-23-2006, 10:41 PM	#12
Jay Dee M Leaky Injector Join Date: Dec 2005 Location: So Cal. Posts: 93 Trader Rating: (1) Feedback Score: 1 reviews	It's funny that I noticed this too and I thought that something was wrong with my car. But I guess it happens to everyone's 240.

10-23-2006, 11:35 PM	#13
sikS1LVIA Leaky Injector Join Date: Oct 2006 Location: Chicago Posts: 100 Trader Rating: (0) Feedback Score: 0 reviews	ya same shit happens to me my legs get so fuking hot its good in the winter blows in the summer __________________ -240sr- If You're Not Breakin It, You're Not Drivin It Right. "BOOST IT"

10-24-2006, 02:34 AM	#14
sw20>>s14 Post Whore! Join Date: Jan 2005 Location: bay area Posts: 5,656 Trader Rating: (19) Feedback Score: 19 reviews	"trans hump"...haha, i like that... __________________ s14\| y34\| 911 gts\| exige s\| 600rr\| r3\| 250r\| 85 girlfriend

10-24-2006, 11:58 PM	#15
carnagexxxx Zilvia Member Join Date: Sep 2006 Location: weirdoville Age: 43 Posts: 244 Trader Rating: (-1) Feedback Score: -1 reviews	Well I guess I'm not the only one! It sounds like a good idea once I take the engine out to put some heat shield down there. I figured it was the transmission getting REALLY overworked.

10-25-2006, 12:06 AM	#16
nissanhpower Join Date: Oct 2006 Location: georgia Age: 45 Posts: 27 Trader Rating: (0) Feedback Score: 0 reviews	might be something to do with your heat shield

10-25-2006, 09:26 AM	#17
theslows13 Zilvia Member Join Date: Aug 2006 Location: Paradise Age: 38 Posts: 251 Trader Rating: (1) Feedback Score: 1 reviews	i had this prob but only when the torque converter on the auto died... after the 5 spd swap, no heat issues

10-25-2006, 10:44 AM	#18
speedstar01 Zilvia Junkie Join Date: Dec 2005 Location: NY! Posts: 389 Trader Rating: (0) Feedback Score: 0 reviews	i have a 91 240 HB and my hump gets very hot. almost uncomfortable after a few hours of driving (did it from Iowa to NY) with no cruise and in under 20 hrs! why? cuz i can and more importantly cuz i love my nissan :P anyway at first i thought it was due to the lousy new carpeting that was installed in my car car before i bought it. my car also didnt come with floormats.(i thought that maybe they forgot to lay down a lil insulation underneath my gas pedal foot and esp near my hump my HUMP MY HUMP!! golly Fergie is a hottie...anyway... i also had a test pipe welded in when i installed my catback exhuast..... to solve the heat problem i "borrowed" an extra Mazda6 rear passenger floor mat and place it right on my drivers side floor. not only does it match my black interior...it also looks snazzy super cool now that i have a plush and inviting floormat shielding my size 12 feet....and now i dont suffer anymore because it was rough. my kicks would seriously feel as if they were on fire and i was like "man im getting damn sweaty driving this sweet car". maybe it was the excitement of driving a 240?!??? or maybe the rubber soles in my Circas were getting melted to my heels!!! Problem Solved

10-25-2006, 11:38 AM	#19
tacotacotaco Post Whore! Join Date: Jun 2005 Location: GRRRVINE!!! Age: 42 Posts: 3,249 Trader Rating: (16) Rides Gallery: tacotacotaco Feedback Score: 16 reviews	Yeah i have a fully gutted interior. I have to put blue tape on my heel to stop my heel from burning. It gives that "I drive" look to your style

10-25-2006, 08:03 PM	#20
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	Nomex shoes.

09-14-2007, 01:00 PM	#21
carnagexxxx Zilvia Member Join Date: Sep 2006 Location: weirdoville Age: 43 Posts: 244 Trader Rating: (-1) Feedback Score: -1 reviews	I hate to bring back a dead thread but I have a funny bit to share. My girlfriend recently drove my car for an extended period of time. After she was done doing what she needed to do she takes her sneaker off, shows me the damage, and wouldn't you know that the S.O.B. melted about 1/4 off of the sole. Once I get some free time I am going to try to write up a post on how to prevent this from happening without being too ghetto.

09-14-2007, 01:17 PM	#22
hayaimoto Zilvia Junkie Join Date: Dec 2006 Location: Irvine CA Posts: 492 Trader Rating: (20) Feedback Score: 20 reviews	This is a very common problem amongst the s-chassis guys, its a little worst to have an sr20det as well. What I found out to help is first insulating that tranny "hump" with heat wrap. Not through the inside of the car but in the tranny "hump" area itself. I strongly recommend this with the motor or transmission of out the car. Then if your are SR20DET powered, wrap the exhaust elbow and downpipe with heat wrap as well. After I performed these steps, My car didn't become a shoe melter no more. __________________

09-14-2007, 11:58 PM	#23
Tops* Zilvia Addict Join Date: Sep 2007 Location: SF, CA Age: 37 Posts: 966 Trader Rating: (6) Feedback Score: 6 reviews	carnagexxxx, thanks for bringing this thread back up to the top. I was wondering for some time if it was my tranny or my exhaust. I'm SR powered and it's definitely not as bad as some people on here but the heat creeps through to my shift knob. Oh well, I guess I'll just have a nice hand warmer this winter...