[L69-Z28]

I have a new G-Force G5R transmission that I started using this summer. I have found the tranny likes lots of RPMs when using the clutchless upshifting. I'm able to do that pretty good but I have issues when trying to do a clutchless downshift. The clutchless downshifting was one of the reasons why I went with a dogring tranny because I'm not very good at heel-toe (rolling the foot). I now use the clutch everytime when down shifting (still trying to figure out the rpm match). I do shift the gears very quickly and the engine is only a 10.6:1 compression ratio.

I've talked with the manufacture regarding the downshifting. Anyone who uses a dogring tranny shed some light on how they do a clutchless downshift ??
Thanks,
Brian

[StanIROCZ]

There aren't too many on this forum with dog ring trannys. I am one of them but I almost always use the clutch. No clutch shifting sounds glamorous but I've found that I can upshift just as fast with the clutch as I can without. Dog rings make the shift fast, not the clutchless part of it. I can stab the clutch just as fast as I can pull the shifter so why not use the clutch and save some wear and tear on parts?

As far clutchless downshifting, I've tried it on the street a time or 2 and it scared me enough to not try it again. Unless you are left foot braking I don't see any need to not use the clutch... your left foot isn't doing anything else. Heal toe is a totally separate issue than the clutch. Heal toe is the right foot, not the left. You can suck and heal toeing but still use the clutch. You should try and wait as long as possible to downshift,,, maybe even at mid corner right before you want to hit the gas. The lower the engine RPM the easier it is to down shift. There's another pretty recent thread about pedal mods that you can do to help with heal toe.

Funny side bar story. I was having trouble with my throttle sticking after the LS swap this past summer. I did a couple 1/4 mile runs at Gateway Motorsports Park in St. Louis on the Hot Rod Power Tour and my throttle stuck both times. Rather than stopping the run and turning the car off and looking like an ass, I kept going. So the throttle is stuck to the floor and I just leave it there, hit red line, stab the clutch and shift, let it red line, stab the clutch and shift, let it red line, stab the clutch and shift. I had the rev limiter set for the same RPM as I was shifting at so there were no ill effects. After I went through the lights I turned the engine off. There are some more funny stories about this sticking throttle (IMG:http://www.frrax.com/rrforum/style_emoticons/default/biggrin.gif) And yes it is fixed now and it was fixed before I ever got on the road course again.

[Pony Exp.305]

There aren't too many on this forum with dog ring trannys. I am one of them but I almost always use the clutch. No clutch shifting sounds glamorous but I've found that I can upshift just as fast with the clutch as I can without. Dog rings make the shift fast, not the clutchless part of it. I can stab the clutch just as fast as I can pull the shifter so why not use the clutch and save some wear and tear on parts?

As far clutchless downshifting, I've tried it on the street a time or 2 and it scared me enough to not try it again. Unless you are left foot braking I don't see any need to not use the clutch... your left foot isn't doing anything else. Heal toe is a totally separate issue than the clutch. Heal toe is the right foot, not the left. You can suck and heal toeing but still use the clutch. You should try and wait as long as possible to downshift,,, maybe even at mid corner right before you want to hit the gas. The lower the engine RPM the easier it is to down shift. There's another pretty recent thread about pedal mods that you can do to help with heal

I think about buying clutchless. Thanks Stan for sharing this info.
I bought used richmond-tex 4-spd. I talked with Titfon on Clutches/Bellhousing. The guy @Titfon said this trans looks same as T-10. I don't know about that (IMG:http://www.frrax.com/rrforum/style_emoticons/default/wink.gif) .
Pixes:
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