[RX7]

Anyone ever heard of doing this so you can shift faster?

[stickcar1990]

RX7, on May 22 2006, 12:28 PM, said:

Anyone ever heard of doing this so you can shift faster?

its not really a good idea, but i have heard of it, its called a crash box. you take the blocking rings out, or grind the teeth off them, then grind every other tooth off the gear, and off the inside of the slider. if this is somethin you want, i would suggest going with something pro-shifted. liberty, g-force etc.

[RX7]

RX7, on May 22 2006, 12:28 PM, said:

Anyone ever heard of doing this so you can shift faster?

The reason I ask is because this guy says he removed his and also 3/4 of his dogs. He's now running 9.0's.........

http://videos.street...273B20B5487.htm

[Stage-1-SRT-4]

I have never heard of that

[RX7]

stickcar1990, on May 22 2006, 12:42 PM, said:

its not really a good idea, but i have heard of it, its called a crash box. you take the blocking rings out, or grind the teeth off them, then grind every other tooth off the gear, and off the inside of the slider. if this is somethin you want, i would suggest going with something pro-shifted. liberty, g-force etc.

Well, not everyone can afford a $6,500 transmission

So, they remove the synchros and grind off every other tooth off the dog gears? What do you mean, slider?

[stickcar1990]

its not a matter of affording an expensive tranny, you can send any box to the aforementioned companies and have them proshifted. the slider is the part of the synchro assembly that the fork engages, it slides onto the teeth of the gear. the problem with doing this, is the tranny gets weaker. when you have something proshifted, they put new rings on the gears with much bigger thicker teeth. they still grind out teeth from the slider, but there is much more material there to support the power. if you want, when i get home, i can take some pics of some proshifted gears and sliders so you can get a better idea. if you do decide to try doin this on your own, keep us posted, i have only heard of people doin this, never actually seen it done. be neat to see how it turns out. what tranny are you using?

and they dont use a blocking ring at all from what i understand

[RX7]

stickcar1990, on May 22 2006, 12:57 PM, said:

its not a matter of affording an expensive tranny, you can send any box to the aforementioned companies and have them proshifted. the slider is the part of the synchro assembly that the fork engages, it slides onto the teeth of the gear. the problem with doing this, is the tranny gets weaker. when you have something proshifted, they put new rings on the gears with much bigger thicker teeth. they still grind out teeth from the slider, but there is much more material there to support the power. if you want, when i get home, i can take some pics of some proshifted gears and sliders so you can get a better idea. if you do decide to try doin this on your own, keep us posted, i have only heard of people doin this, never actually seen it done. be neat to see how it turns out. what tranny are you using?

and they dont use a blocking ring at all from what i understand

Another reason why some of us can't use a aftermarket transmission is because our class won't allow it. Pictures would be great. I'd actually like to try doing this but I would seriously need some help. It's a mazda transmission. I'm only putting down like 550 torque so.....

I just had my transmission apart a few weeks ago, I should have done it then.

I tried searching but didn't find anything about anyone doing this. Do you have anymore information about this?

Are blocking rings the same thing as synchros?

This post has been edited by RX7: 22 May 2006 - 12:07 PM

[BobCat]

The one's I've seen that were "home-made" still used blockers but they would grind off every other tooth on the gears. You can also sharpen the hell out of the dog teeth and it will make it shift more positive but it doesn't last very long.


What are you trying to accomplish by doing all of this or what would you like to improve...??

[stickcar1990]

synchro is a few parts, you got the slider, the hub(part attahced to the shaft that the slider rides on), blocking rings(the ring between the gear and hub that has teeth on it and rides right next to the gear).
i would honestly think that with that much torque, you should atleast call liberty and ask them if the can proshift your setup. it will still be the stock tranny, they will just modify your existing gears and sliders. the other part of doing this is that the tranny becomes unsynchronized. that means it can be a bitch to down shift. the guys that run the g-force t5's seem to do ok with it on the street though. i dont have the number for liberty, but their site is www.libertysgears.com , i think. you might just give them a shout. if you need any help doin it yourself, lemme know. i would be happy to asist, if you wanna drive to b.f.e. i just cant tell you for sure how well it will work.

that addy is correct, they have some good pics of what i am talking about in the pro shift section

[RX7]

BobCat, on May 22 2006, 01:18 PM, said:

The one's I've seen that were "home-made" still used blockers but they would grind off every other tooth on the gears. You can also sharpen the hell out of the dog teeth and it will make it shift more positive but it doesn't last very long.
What are you trying to accomplish by doing all of this or what would you like to improve...??

What I'm trying to accomplish..........

I should be trapping around 145-147mph when I take my car out. With my slow shifting transmission, I would probably be able to runa 10.00 (That's ridiculous). My problems is that between shifts, my motor falls out of boost. If I were able to bang gears while keeping the pedal to the metal, my motor would stay in boost and that would results in a much better et. My car looks like a leap frog going down the track. It's ridiculous.

What exactly is the blocker? Is it attached to the synchro? I thought the teeth off the synchros needed to be grinded off to?

What do you mean, make it shift more positive?

Thanks for the help.

stickcar1990, on May 22 2006, 01:20 PM, said:

synchro is a few parts, you got the slider, the hub(part attahced to the shaft that the slider rides on), blocking rings(the ring between the gear and hub that has teeth on it and rides right next to the gear).
i would honestly think that with that much torque, you should atleast call liberty and ask them if the can proshift your setup. it will still be the stock tranny, they will just modify your existing gears and sliders. the other part of doing this is that the tranny becomes unsynchronized. that means it can be a bitch to down shift. the guys that run the g-force t5's seem to do ok with it on the street though. i dont have the number for liberty, but their site is www.libertysgears.com , i think. you might just give them a shout. if you need any help doin it yourself, lemme know. i would be happy to asist, if you wanna drive to b.f.e. i just cant tell you for sure how well it will work.

that addy is correct, they have some good pics of what i am talking about in the pro shift section

Oh, I don't care about downshifting

I'll take a look at the pics.

We've tried calling liberty and g-force. They want nothing to do with us mazda guys

Liberty will build our transmission up but they want $6,500 for it. That's too rich for my blood.

Thanks for the help!

[Keeven1320]

"goodolboy32" did that to his munci ( i think thats how you spell it?)

[RX7]

Keeven1320, on May 22 2006, 02:01 PM, said:

"goodolboy32" did that to his munci ( i think thats how you spell it?)

how did he like it?


I was also just told that I would need a longer shifter to help avoid mised shifts. Is this true?

[stickcar1990]

what you need, is a good machine shop. they can make the proshifted rings, and then weld them on the gears. if you can get on here later tonite, pm me, we can talk about all this in chat or something. that would be easier.

i have been messin with manual trannies for a long time, and i dont think what you want to do will be strong enough for that much power. i could easily be wrong, but the gears just arent going to have the surface area to hold. the teeth are so small i just see it being a real weak link. does anybody make a bell housing to put like a toploader behind your engine? with the right work, that will hold. or better yet, there has to be somebody out there that can do a faceplate or proshift on your tranny. im shocked liberty wanted that much to do yours. you can buy one of their 5 speeds for that. g-force too.

as far as a longer shifter goes, a transmission that is setup like this will go into the next gear with a toothpick. the biggestr effort that will come out of you to shift it will be pulling it out of gear and stabbing the clutch. my proshifted boxes shift quicker than anybody would ever believe unless they heard it for themselves. ask bob

[RX7]

stickcar1990, on May 22 2006, 02:26 PM, said:

what you need, is a good machine shop. they can make the proshifted rings, and then weld them on the gears. if you can get on here later tonite, pm me, we can talk about all this in chat or something. that would be easier.

i have been messin with manual trannies for a long time, and i dont think what you want to do will be strong enough for that much power. i could easily be wrong, but the gears just arent going to have the surface area to hold. the teeth are so small i just see it being a real weak link. does anybody make a bell housing to put like a toploader behind your engine? with the right work, that will hold. or better yet, there has to be somebody out there that can do a faceplate or proshift on your tranny. im shocked liberty wanted that much to do yours. you can buy one of their 5 speeds for that. g-force too.

as far as a longer shifter goes, a transmission that is setup like this will go into the next gear with a toothpick. the biggestr effort that will come out of you to shift it will be pulling it out of gear and stabbing the clutch. my proshifted boxes shift quicker than anybody would ever believe unless they heard it for themselves. ask bob

I'll try to get on here later tonight....... The only weak link on my transmission is the input and output shafts. The transmission can withstand alot more than I'm throwing at it.

The only bellhousing people make is to fit up with a T5. What's a faceplate?

I'd like to do this

This post has been edited by RX7: 22 May 2006 - 01:33 PM