japmadlad Posted July 30, 2010 Share Posted July 30, 2010 Hi guys. What are the 350Z gearboxs capable of handling power & torque wise? Are there any issues that the gearboxs suffer from? thanks Quote Link to comment Share on other sites More sharing options...
geoff-r Posted July 30, 2010 Share Posted July 30, 2010 My favourite subject about the 350Z Quote Link to comment Share on other sites More sharing options...
japmadlad Posted July 30, 2010 Author Share Posted July 30, 2010 glad to hear it. you got any info for me? The search is terrible on this forum. Put in 350z gearbox & it brings up every single post that exists which contain any of the letters & numbers you searched for Quote Link to comment Share on other sites More sharing options...
maz0 Posted July 30, 2010 Share Posted July 30, 2010 glad to hear it. you got any info for me? The search is terrible on this forum. Put in 350z gearbox & it brings up every single post that exists which contain any of the letters & numbers you searched for Hahaha, try searching topic titles only. But yeah I know what you mean. Quote Link to comment Share on other sites More sharing options...
IanS16 Posted July 30, 2010 Share Posted July 30, 2010 I tried searching on MY350Z for you but the search there is awfull. There were a few posts mentioning uprated gearboxes at 450bhp and 750bhp but couldnt see anything about the stock box. Wonder if Alex runs stock? Quote Link to comment Share on other sites More sharing options...
andlid Posted July 30, 2010 Share Posted July 30, 2010 So you've not decided yet then, ;-) What power do you need it to last to take? Quote Link to comment Share on other sites More sharing options...
japmadlad Posted July 30, 2010 Author Share Posted July 30, 2010 no fella still researching. Z box looks to have its shifter fairly far back compared to SR but need to have them side by side really & measure. Power wise say 430 bhp torque say 410 ft/lbs Quote Link to comment Share on other sites More sharing options...
andlid Posted July 30, 2010 Share Posted July 30, 2010 People run that on standard gearbox, will see if I can find any figures somewhere. no fella still researching. Z box looks to have its shifter fairly far back compared to SR but need to have them side by side really & measure. Power wise say 430 bhp torque say 410 ft/lbs Quote Link to comment Share on other sites More sharing options...
ATTAK Z Posted July 30, 2010 Share Posted July 30, 2010 Standard is a strong box but it does have issues with lazy synchro, especially 4th to 5th and 3rd to 4th when giving it b@stardos Quote Link to comment Share on other sites More sharing options...
japmadlad Posted July 30, 2010 Author Share Posted July 30, 2010 i was hoping a standard Z box would take it. Does the Z box have many problems? Quote Link to comment Share on other sites More sharing options...
Husky Posted July 30, 2010 Share Posted July 30, 2010 Standard is a strong box but it does have issues with lazy synchro, especially 4th to 5th and 3rd to 4th when giving it b@stardos i believe the weak synchros are actually 5th, 6th and 2nd normally Quote Link to comment Share on other sites More sharing options...
ATTAK Z Posted July 30, 2010 Share Posted July 30, 2010 Standard is a strong box but it does have issues with lazy synchro, especially 4th to 5th and 3rd to 4th when giving it b@stardos i believe the weak synchros are actually 5th, 6th and 2nd normally mistake ... I should have said that .... but it's not a big problem anyway IMO Quote Link to comment Share on other sites More sharing options...
japmadlad Posted July 30, 2010 Author Share Posted July 30, 2010 I've seen mention of upgraded gearboxs. what does it entail & what sorta monies are we talking? Quote Link to comment Share on other sites More sharing options...
ATTAK Z Posted July 30, 2010 Share Posted July 30, 2010 I've seen mention of upgraded gearboxs. what does it entail & what sorta monies are we talking? je ne sais pas Quote Link to comment Share on other sites More sharing options...
japmadlad Posted July 30, 2010 Author Share Posted July 30, 2010 Standard is a strong box but it does have issues with lazy synchro, especially 4th to 5th and 3rd to 4th when giving it b@stardos i believe the weak synchros are actually 5th, 6th and 2nd normally Weak in what way? That they expolde & need rebuild or that they are slow to engage when pushing it on & really just annoying but liveable? Quote Link to comment Share on other sites More sharing options...
Husky Posted July 30, 2010 Share Posted July 30, 2010 Standard is a strong box but it does have issues with lazy synchro, especially 4th to 5th and 3rd to 4th when giving it b@stardos i believe the weak synchros are actually 5th, 6th and 2nd normally mistake ... I should have said that .... but it's not a big problem anyway IMO its a pretty huge problem unfortunately, now the general zed population is racking up more miles, more and more gearboxes are failing and needed replaced entirely. If they arent too bad they can be refurbed though so not a complete loss. im not trying to be the doomsayer of the zed gearbox but if it IS faulty then its not a cheap fix. Quote Link to comment Share on other sites More sharing options...
ATTAK Z Posted July 30, 2010 Share Posted July 30, 2010 Standard is a strong box but it does have issues with lazy synchro, especially 4th to 5th and 3rd to 4th when giving it b@stardos i believe the weak synchros are actually 5th, 6th and 2nd normally Weak in what way? That they expolde & need rebuild or that they are slow to engage when pushing it on & really just annoying but liveable? Spot on ........ liveable ... I quite like it TBH Quote Link to comment Share on other sites More sharing options...
Husky Posted July 30, 2010 Share Posted July 30, 2010 Standard is a strong box but it does have issues with lazy synchro, especially 4th to 5th and 3rd to 4th when giving it b@stardos i believe the weak synchros are actually 5th, 6th and 2nd normally Weak in what way? That they expolde & need rebuild or that they are slow to engage when pushing it on & really just annoying but liveable? from personal experience, annoying but liveable at first, it makes changing gear difficult as you need close matching shaft speeds not to crunch, untill they give up and its almost impossible to change gear without crunching. There are many perfect boxes out there though Quote Link to comment Share on other sites More sharing options...
japmadlad Posted July 30, 2010 Author Share Posted July 30, 2010 what i'm looking at is putting a Z33 box im my S15 to replace the SR 6spd as the SR boxes are weak. idealy i'd like to keep 6 gears ( hence Z33 ) but it is gona cost $$$$ to do conversion & if the Z33 box has problems i'd be better off doing RB25/Z32 as it is cheaper to do & box is fairly bulletproof. Quote Link to comment Share on other sites More sharing options...
ATTAK Z Posted July 30, 2010 Share Posted July 30, 2010 what i'm looking at is putting a Z33 box im my S15 to replace the SR 6spd as the SR boxes are weak. idealy i'd like to keep 6 gears ( hence Z33 ) but it is gona cost $$$$ to do conversion & if the Z33 box has problems i'd be better off doing RB25/Z32 as it is cheaper to do & box is fairly bulletproof. I'm out .... you've gone way beyond my knowledge ..... good luck Quote Link to comment Share on other sites More sharing options...
japmadlad Posted July 30, 2010 Author Share Posted July 30, 2010 conversion is simples really there are 2 options: 1. Custom adaptor plate to fit between engine & bell housing 2. Get the welder out & mate the SR bell housing to the chosen gearbox (RB25/Z32/Z33) Both also require a custom prop shaft ( Carbon Fibre ) & depending on you clutch/fly wheel setup you may require a change of either/or or just clutch release bearing. I'm sorted with this as my orc ogura clutch & fly is happy in the Z box/RB box/SR box etc Quote Link to comment Share on other sites More sharing options...
Husky Posted July 30, 2010 Share Posted July 30, 2010 from what i gather, the box is very strong there are however some lemons out there. Quote Link to comment Share on other sites More sharing options...
japmadlad Posted July 30, 2010 Author Share Posted July 30, 2010 will have to give it some thought. availability & price will come into it. 6spd SR = rare, Z33 = lots, RB25 = lots. was there an oil issue with older box say pre 2004? Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted July 30, 2010 Share Posted July 30, 2010 I tried searching on MY350Z for you but the search there is awfull. There were a few posts mentioning uprated gearboxes at 450bhp and 750bhp but couldnt see anything about the stock box. Wonder if Alex runs stock? Stock box Ian and no issues. Regular fluid changes with Nissan's finest and a dash of Molyslip. Quote Link to comment Share on other sites More sharing options...
geoler Posted July 31, 2010 Share Posted July 31, 2010 I tried searching on MY350Z for you but the search there is awfull. There were a few posts mentioning uprated gearboxes at 450bhp and 750bhp but couldnt see anything about the stock box. Wonder if Alex runs stock? Stock box Ian and no issues. Regular fluid changes with Nissan's finest and a dash of Molyslip. Hi Alex, Can you give us a bit more info about your us of Molyslip? E.g. Where it's applied, how often etc. Cheers, Geo Quote Link to comment Share on other sites More sharing options...
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