TRUST BNR32 6 Speed Transmission Dogbox

[mwracing]

This is coming out of my recently imported Black GTR.

the new owner doesnt like the harsh engagement for a street car, so I ordered a new OEM 5spd Stock Transmission from Nissan. plus a Nismo Coppermix Twin Plate at the same time.


Will be removed in Two weeks when new tranny arrives Express Air Mail.

Looking for quick sale, $3800 plus shipping.
Item located in Vancouver BC, Local sales more than welcome to test drive car before it gets removed.

This is a Push style Pre~93/02 Engines. not a R33 Style Pull transmission.

Paypal 3.5%





Same transmission as Felix's Monster
some videos of actual transmission in action:

http://youtube.com/watch?v=eMEOmHvCxpo&fmt=18

http://youtube.com/watch?v=bJcc0Qpl4NA&fmt=18

[JD74]

Faaacckkkk........

What kind of mileage is on this badboy ?

This almost seems worthwile putting my paintjob on hold for......lol

Also, what's the deal with REVERSE in the second video ? have to HOLD it in ?

[mwracing]

As mentioned in the video, the low clutch life is the probable cause of the reverse intermittent engagement. Tranmission is alot better once warmed up. both videos were from a cold start.

[JNS Performance]

I don't believe its a dogbox, I originally owned this car and was told otherwise.... you still need to use the clutch between gears.

If it isa dogbox, then that is one hell of a price!

[Z-Tuned]

My o my. Me want. Any credit for a good working transmission? How about an Exedy triple plate thats attached to it! ARGH!

[mwracing]

I don't believe its a dogbox, I originally owned this car and was told otherwise.... you still need to use the clutch between gears.

If it isa dogbox, then that is one hell of a price!

Yes it is one hell of a price.

Even thou you might have owned the car for a few days, I actually driven it, here in Vancouver.

Here is some info about transmissions from NASIOC:

What types of engagement are available? This is a common source of confusion when searching for information on transmissions. There are two types of engagement: Synchro and Dog.

Synchro engagement (also known as synchromesh) is what most passenger cars use.

Advantages:
a. Smooth operation on the road
b. No special driving style required

Disadvantages:
a. Synchros and shifting forks can break when abused and shifted aggressively
b. Slower to shift vs. dog engagement

Dog engagement is what most race prepared vehicles use.

Advantages:
a. Engage at any rpm
b. Allows for wider gear design
c. Will flat shift (Flat shifting is a practice where the clutch or gas do not need to be totally lifted in order to shift. Users will slightly lift one or the other to unload the dogs to allow a very fast shift)

Disadvantages:
a. Difficult to drive on the road
b. Recommended only for race use
c. Special care required under normal street use


What is a dog box? A dog box is the term for a transmission utilizing a dog engagement. A dog box can have either helical or spur gears or both.

What is dog engagement? Dogs are basically no more than cogs on a slider. The shifter pushes them into a receiver ring which engages the gear it is attached to. There is a separate dog and receiver for each gear in the transmission. On a racing transmission, there is a lot of "slop" (the gaps in the receiver are a lot larger than the teeth on the dog), which makes it easier to move into and out of the gears at higher RPMs without fully engaging the clutch.

Can a dog box be driven on the street? Though generally reserved for race applications, many users drive dog boxes on their daily driven vehicles. To do so, you need to learn proper shifting techniques and rev matching skills to decrease wear on the dog gears. The Shifting FAQ, this article, local personnel, or your transmission professional should be able to provide assistance with proper shifting techniques. This is one decision that should not be made lightly. If there is the slightest doubt in your mind as to your technique or attitude towards a daily driven dog box, you should opt for a synchro engagement transmission. Another thing to keep in mind is that a dog box is definitely not an option for a vehicle that sees occasional use by others such as your spouse, friends, visitors, valet, etc.


From this complete well informed write up, i can confirm this transmission has dog engagement. I dont think Greddy/trust even builds a Syncro 6 Speed for an BNR32.

rev matching for down shifts is important, aswell as Using the clutch isnt 100% necessary, IF you know what your doing, and have a good sense of timing.

[C-unit]

I can prove this is a dog box. No clutch is require when shifting.

[RyanGTS-T]

I learned how to shift without the clutch one the Lordco delivery cars. Quite the technique but kinda difficult to recover if your not quick enough. NEVER force the shifter when revmatching your downshift, it will result in grinding.

I find double clutching + rev matching together seems to work the best. It results in a smoother engaugement and no worrying about griding anything.

[mcfly]

this box will be good for a moderate gtr build

[bignate]

If used in a track only car, how often would this need to be rebuilt? I know theres a lot of factors, but just a rough idea.

[mwracing]

all pm's replied. close offers but no takers just yet

[Dragon Humper]

still kickin'?

This tranny still around? If so I suppose an OS Gikken double will work with it?


Jon.

[danceofcurse]

still have it? tried to pm your box is full..? pm me

[bignate]

I asked Martin about this a little while ago, its long gone sadly.

[mwracing]

still have it? tried to pm your box is full..? pm me

Sorry Tranny Sold.

Mods please Lock thread.