Dogbox interests
Joined: Apr 2002
Posts: 4,857
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From: Gold Coast
Originally Posted by Spoolin,Oct 30 2009, 02:30 PM
Can you even do the 1-4 dog box and use the stock 5-6? Isn't the dog box 4th gear close to the same ratio as the stock 5th gear?
It makes it a bit easier on the street than a full dog system.
Most of the time it should be fine. I read the traffic eg at traffic light or during peak hour and expect when I will need to put the stick back into 1st. I just depress the clutch pedal before I get to move and give the input shaft time to slow down before I put it into 5th.
On rare occasion, when the light suddenly turns green or something that I need to grab first gear urgently (from neutral), I depress the clutch, just rest the stick half way into 5th and use the 5th synchro to slow down the input shaft. Then I chuck it into first. This way I won't damage the 1st dog/dog ring.
5th (or reverse) synchro is cheap compare to the dog ring
I am no gearbox expert/ engineer. However 5th and 6th are next to each other so it is doable unless the 1-4th gears are wider than the stock gears and doesn't allow enough room for the oem 5th and 6th.
The gear ratio can be custom order
Joined: Feb 2008
Posts: 3,964
Likes: 7
From: USA
Okay, I have a few questions as I am no expert on transmissions
(1) What parts fail in our transmissions?
(2) When the failures occur is it attributed to launching the car or extended loading from hard acceleration?
(3) Has anyone tried, heat treateatment, case hardening……. To the parts that fail?
(4) What about just buying the parts that are prone to failure from a company like PPG for a cheaper alternative?
(1) What parts fail in our transmissions?
(2) When the failures occur is it attributed to launching the car or extended loading from hard acceleration?
(3) Has anyone tried, heat treateatment, case hardening……. To the parts that fail?
(4) What about just buying the parts that are prone to failure from a company like PPG for a cheaper alternative?
Registered User
Joined: Jan 2009
Posts: 1,601
Likes: 14
From: Zionsville, IN
From my experiences with this trans, I never broke one launching, I broke 2 2nd gears just rolling into the throttle.
But I'm sure it's just a domino effect. Once you beefed that up, it's on to the next weakest link in the trans
But I'm sure it's just a domino effect. Once you beefed that up, it's on to the next weakest link in the trans
Joined: Apr 2002
Posts: 4,857
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From: Gold Coast
Yes I lost 2nd in one box and another gearbox was noisy after a launch which broke an axle as well.
The second gear was stripped clean of it's teeth. I have not open up the noisy gearbox to see what's wrong.
Joined: Nov 2004
Posts: 1,239
Likes: 13
From: Denver
Originally Posted by camuman,Oct 29 2009, 04:37 PM
aint that rear mount? can u retrofit that to a conventional mount?
Registered User
Joined: Jan 2009
Posts: 1,601
Likes: 14
From: Zionsville, IN
Originally Posted by rob!,Nov 3 2009, 07:30 PM
just keeping this thread up there hoping we can lock something up by mid winter so i can make up my mind on what to do with this car. keep it or sell it and get a supra.