sr tranny problem!!! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

luckie2hav3her · 12-27-2004, 10:39 PM

just recently my 2nd (best gear) started grinding under pressure!!! i cant downshift into 2nd anymore without it grinding, itll go in but its horrible..... if i shift from 1st (below 3rpm) into 2nd itll go in fine.... i just changed my tranny fluid with some redline shockproof heavy hoping itll fix it... but it didnt!! help!! maybe adjusting my synchros will fix it??

silviasichigo · 12-27-2004, 11:53 PM

Bad syncro the SR trannys suck ass, Even with a OS giken gear set and in/out put shaft they suck. I dumped the idea for the GT-R swap ( did not want to cut into my car) for a dog mission from Australia. It is little expensive but "Garon"teed to last. or my money back minus shipping.

mjjstang · 12-28-2004, 12:55 PM

mine does the same shit in second, i got it where if i move it all the way over hard, and then down, it doesnt shift, but when i get on it, its not a freindly shifter, tends to grind when im bangin through the gears.

the head · 12-28-2004, 02:08 PM

how much was the dog box and where did you get it from?

to help the creator of the post:
you have a bad synchro
you should either rebuild the trans or replace it you can use the standard 240 transmission as long as you swap the bellhousing over

luckie2hav3her · 12-28-2004, 10:21 PM

i heard that older cars didnt have synchros? wat they did to shift was double clutch?? cant i just do that to get it into 2nd without grinding? =)

silviasichigo · 12-28-2004, 11:22 PM

Well It is about $7000 AUS dollars I got it from A friend of mine from nissansilvia.com I think they call there shop eathquake or something like that. I was asking around here in japan about a good dog mission and they said either HKS or some of the Aussie guys build some badass missions.

the head · 12-29-2004, 08:06 AM

some cars back in the 30s and shit had no synchro gears but as you progressed into the muscle car era (late 50s and up) most except for big trucks have syncros...it is not as much the double clutch as rev matching that you need to be good at for a non synchro (dog box) transmission

Flybert · 12-29-2004, 12:55 PM

Quote:

Originally Posted by silviasichigo

Well It is about $7000 AUS dollars I got it from A friend of mine from nissansilvia.com I think they call there shop eathquake or something like that. I was asking around here in japan about a good dog mission and they said either HKS or some of the Aussie guys build some badass missions.

I remember reading that the older model greddy dog missions are great.

And to the original poster, if you are grinding on upshifts with heavyduty shockproof in there, go get another mission or use your old KA mission. If it's only on downshifts, just revmatch. You should be revmatching anyways.

12-27-2004, 10:39 PM	#1
luckie2hav3her BANNED Join Date: Mar 2004 Location: Los Angeles Posts: 348 Trader Rating: (0) Feedback Score: 0 reviews	sr tranny problem!!! just recently my 2nd (best gear) started grinding under pressure!!! i cant downshift into 2nd anymore without it grinding, itll go in but its horrible..... if i shift from 1st (below 3rpm) into 2nd itll go in fine.... i just changed my tranny fluid with some redline shockproof heavy hoping itll fix it... but it didnt!! help!! maybe adjusting my synchros will fix it??

12-28-2004, 02:08 PM	#4
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	how much was the dog box and where did you get it from? to help the creator of the post: you have a bad synchro you should either rebuild the trans or replace it you can use the standard 240 transmission as long as you swap the bellhousing over __________________ I never knew you could do that with an eggplant

12-29-2004, 08:06 AM	#7
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	some cars back in the 30s and shit had no synchro gears but as you progressed into the muscle car era (late 50s and up) most except for big trucks have syncros...it is not as much the double clutch as rev matching that you need to be good at for a non synchro (dog box) transmission __________________ I never knew you could do that with an eggplant

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12-27-2004, 11:53 PM	#2
silviasichigo Zilvia Addict Join Date: Mar 2002 Location: Japan Age: 49 Posts: 782 Trader Rating: (0) Rides Gallery: silviasichigo Feedback Score: 0 reviews	Bad syncro the SR trannys suck ass, Even with a OS giken gear set and in/out put shaft they suck. I dumped the idea for the GT-R swap ( did not want to cut into my car) for a dog mission from Australia. It is little expensive but "Garon"teed to last. or my money back minus shipping.

12-28-2004, 12:55 PM	#3
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,654 Trader Rating: (5) Feedback Score: 5 reviews	mine does the same shit in second, i got it where if i move it all the way over hard, and then down, it doesnt shift, but when i get on it, its not a freindly shifter, tends to grind when im bangin through the gears.

12-28-2004, 10:21 PM	#5
luckie2hav3her BANNED Join Date: Mar 2004 Location: Los Angeles Posts: 348 Trader Rating: (0) Feedback Score: 0 reviews	i heard that older cars didnt have synchros? wat they did to shift was double clutch?? cant i just do that to get it into 2nd without grinding? =)

12-28-2004, 11:22 PM	#6
silviasichigo Zilvia Addict Join Date: Mar 2002 Location: Japan Age: 49 Posts: 782 Trader Rating: (0) Rides Gallery: silviasichigo Feedback Score: 0 reviews	Well It is about $7000 AUS dollars I got it from A friend of mine from nissansilvia.com I think they call there shop eathquake or something like that. I was asking around here in japan about a good dog mission and they said either HKS or some of the Aussie guys build some badass missions.