Jump to content
SAU Community

Recommended Posts

Please don't flame me im just a nub! :) Lol, But i was wondering if theres such a thing.. Im told there is.. But ive searched and haven't really found much on the subject. My gearbox is abit grindy as it goes in to third every now and again and i have tried Redline oil etc.. But im just wondering ( cause it come on after a day of hard driving ) Would i have done something to the gearbox? ( A mate suggested the sin chrome but then he said that doesn't just come on it progress's.. So would this be the start? ) If so why would the gearbox start to die under only 184rwkw.. I haven't grinded the gears or anything, But just now its starting to have a slight grind in to 3rd once every 10 changes.. But morel of the story is.. Does anyone know much about a dog box for a R33? And/Or a rough price? Cause im looking at putting alot more power in it once i have the money, So i would like to start with a strong base. Even though i was told Rb25 Drive line and engines are almost indestructible.

Link to comment
https://www.sau.com.au/forums/topic/220699-dogbox-in-a-33/
Share on other sites

dog box????? do u enjoy loud howling noises and crunching into everygear instead????

a gearset made by os giken will do the trick its a sychro set to btw. u could get it dont and fitted for about 3500 to 4000 would have to order gearset from japan tho.... good for 800 crank hp so ive been told

Link to comment
https://www.sau.com.au/forums/topic/220699-dogbox-in-a-33/#findComment-3891932
Share on other sites

the previous owner of the car before you could have thrashed the hell out of it, but then u'v babied it but the box is still on its way out.

bigger clutch will put a little more strain on the box (aswell as other things)

does it grind when upshifting or downshifting? (2nd to 3rd, or 4th to 3rd)

Link to comment
https://www.sau.com.au/forums/topic/220699-dogbox-in-a-33/#findComment-3894032
Share on other sites

To R33cruiser : I have only had the car for about 2 months.. and since then i only changed it last week to put the redline in it, But the oil was still really golden.

To hayden49 : If thats the case i don't mind, I have a 2way that grinds when its cold.. But im told thats normal for them.. And i mean if its a normal thing i don't care.. its just when its a bad thing then thats when i start to get worried about something going on me lol.

To StRyDeR: And no it seems to only been shifting up in to 3rd.. I mean with second and 4th its a little bit notchy and thats about it.

Link to comment
https://www.sau.com.au/forums/topic/220699-dogbox-in-a-33/#findComment-3894234
Share on other sites

I wouldn't personally worry too much with a dog box unless you're chasing power of well over 350-400rwkw and will give the car a punishing on a regular basis... Pretty expensive for those type of gearsets. Stick with the 25 gearbox. supposed to be strong as.

Link to comment
https://www.sau.com.au/forums/topic/220699-dogbox-in-a-33/#findComment-3901387
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Latest Posts

    • I don't know if you can disassemble the thing and put it backwards for different ramp rates. They're both "2 ways" or both "1.5 ways" because well, 2 ways and 1.5 ways are the same 'thing' I do not know for sure, but I believe the 38420-RSS15-B5 is the 1 way, and 38420-RSS20-B5 is the two way. In other words, I predict Nissan considers this: to be a 1.5 way. No idea what actually happens when it arrives/you disassemble it. It would be an excellent question to ask Nismo directly! I somehow doubt you will get an answer though, I feel you would be the first person to document what you encounter when you open the box and the internet would be grateful.
    • I'm going to slap an old nismo logo sticker on my spare one and sell it to the land of the free for a thousand bucks
    • lol, probably should have read further!
    • Well - they have arrived.  And they are easy on the eye to put it mildly... These only have three bolts - but for a start there is a key that fits with vacuum like precision..  And as you can see by my ruler, the interface is large..   I listened to a podcast on HP Academy about Dan (KiwiCNC) and I'm more than comfortable he knows what he is doing. R35 Bearing assembly should arrive later today so can mock that up for a look. Can't wait to get these on and get some brake pressure logging too. IMG_3860.MP4
    • I would be very confident that they are the same parts (the 2 different SKUs). It seems very clear that you can drop the cam in the 2-way opening, or in the other opening. If you arrange it in the other opening in the same way that you see any other 1-way diff, ie, with the flat of the cam up against the 1° side of the opening, then it would work as a 1-way. It can only spread the ramps when driving forwards - cannot spread the ramps on overrun. It would then appear obvious that if you put the cam into the opening "backwards", that you would get the angled flats of the cam working onto the "points" of the 1° side of the opening, which would give you ramp spread in both loading directions. I do wonder if the forward direction of the 1.5-way config is equivalent to the forward direction of the 2-way, seeing as the cams are flipped and the angled surfaces on those would need to be the same on each side - AND - clearly when installed in either the 2-way or 1-1ay configuration they are not intended to work exactly the same (the ramp angles on the 2-way are 10° different between forward and backward, and the ramp doesn't exist in the 1-way config). 'twere me, I think I would rather actually have a set of rings that offered the 2-way with two different sets of ramp angles, say the 55/45 of the existing design and maybe a 45/37.5 combo for a less aggressive effect), AND another set of rings with a dedicated 1.5-way opening and a dedicated 1-way opening. The 1.5-way opening would actually have the steeper angle on the overdrive side that causes it to be less pushy than the forward drive angle, like you see in many other diffs. But really - if this Nismo thing is thought out properly and all those surfaces work on each other the way that they need to, who am I to argue?
×
×
  • Create New...