Shifting a Dog-Box Transmission - With in-car video!

New to a #Dog-Box Transmission? Make sure you are #shifting right every time and your rebuilds will be cheaper and further between for your high-dollar race transmission!

Watch till the end to see the quick, clutch-less shifting, in slow-motion.

As with anything it might take a little practice, but watching this to see how you properly shift is a great head start. I jump in the #race car and show you as I run up and down through the gears on this freshly built F Production #Mazda #Miata for #SCCA Club Racing.

[Dr_Xyzt]

Every time I help someone with a transmission swap and talk them into a dogbox, I show them this video.
-- There are four things to keep in mind when you go to a dog box.
1: Get the lightest flywheel you find. A heavier flywheel will hit the dog lugs like a monster impact wrench.
2: Get the lightest clutch disc you can find, preferably with a solid hub organic disc. A sprung hub will preload the dog teeth and make it hard to shift, so a solid hub will help you here.
3: Consider a bronze pilot bushing. A bronze bushing creates enough drag to rotate the input shaft, but not enough drag to impede any of the other processes. Sometimes, you don't have enough room to use hard clutch line, so the flex of a braided line can cause some drivability problems. A bronze pilot bushing instead of a roller pilot bushing can help you here.
3.5 -- A bronze bushing on a synchromesh creates a slight drag that the synchronizers have to defeat.
4: You can get great shift quality by partially squeezing the clutch. A 6-finger dog ring with a 1200 RPM speed difference between the gears to be changed will create 7200 opportunities per second to shift.

[Onpointdrift]

This seriously helped me understand how to shift a dogbox trans. Thank you

[smiley]

Thanks for sharing. Years ago, at a Skip Barber school to get my license, they described their transmission as a 'straight cut, non-synchro' tranny. They taught us how to double-clutch on the down shifts. Took a little bit but I got the hang of it. Ever since then, I've always kept on my mind to 'spin the input shaft' if it doesn't want to go in gear (1st or R).

[thomasfischer]

Super cool. Didnt know downshifting was this easy

[montycrain]

It always occurred to me it should be shifted by the hand like you would shift a motorcycle with your foot. They too are straight cut dog ring and have been quick shifted for years. Quick and Diliberate.

[forestlawrencegrading]

Old school Truck Driving Experience helps all old schoolers left foot breaking down shifting with the jake brake

[rlarajr]

I just bought a Formula Mazda with a dog box. Never shifted one before. Read about how to do it. But it really helps to actually see how it's done.

[acesofspades]

Your videos are awesome I would love to see an installation video

[joeperse]

How awesome!! Thanks for the explanation, and i chose to be an electrician 🤦🏽‍♀️

[dimitridtm]

thx for the info . really great tips . greetings

[kpwr]

Thanks Jesse for this explanation and method.

[rallyburnzsimracing]

This is cool well explained...and car sounds sweet!!!

[elliotcutliff]

Knew what a dog box was, didn't fully understand it. Reminds a lot of floating gears, though a fair bit slower motions required.

[popomomo]

I'm here getting info for a mazdaspeed transmission 😄

[adrn]

This video just made me a subscriber..
Thanks for the great explanation..
Cleared up alot of questions.

[mynameismyname]

I need one that smooth and quiet for an 88 foxbody mustang!

[mtndogrally]

Can you do the exact same video again but with a slow mo camera? Particularly the downshift, really hard to tell the sequence.

[mhsoftfiber]

Great explanation. Seems really easy on up shift. On down shift not quite as easy. All happens so fast. So its gear in, neutral, blip and in whith the gear?

[truejayoh]

Awesome video! In a squential dog box, how do you perform blip on a downshift (while braking)? Do you press on the brake with left foot while blip/downshift at the same time?

[doctane]

Hop back in and show us how you would powershift that baby!!!! :‐)