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Forum: Dragstrip and Launch Techniques Discussion 10-31-2023, 11:43 AM
Replies: 30
Views: 2,198
Posted By sr530
I don't know, but a typical V8 swapped 2nd gen...

I don't know, but a typical V8 swapped 2nd gen RX-7 usually weighs around 26-2800. With a turbo and T56, I would suspect around 2800. Videos are on Stick Shift Nation facebook group.

Grant
Forum: Dragstrip and Launch Techniques Discussion 10-31-2023, 10:19 AM
Replies: 30
Views: 2,198
Posted By sr530
I know of a 88mm T4 SBE LS with a synchro'd...

I know of a 88mm T4 SBE LS with a synchro'd H-pattern T56 that's been 8.85@163. No 2-step, lifting every shift. Not a Camaro, but a stock bodied 2nd gen RX-7 swapped from IRS to solid axle with one...
Forum: Dragstrip and Launch Techniques Discussion 02-18-2023, 11:29 AM
Replies: 34
Views: 5,572
Posted By sr530
All what you said above are reasons why people...

All what you said above are reasons why people use clutch hit controllers. They make an overkill clutch like your RXT hit more like a well matched clutch, without giving up holding power, thermal...
Forum: Dragstrip and Launch Techniques Discussion 02-17-2023, 11:49 AM
Replies: 34
Views: 5,572
Posted By sr530
The Coyote Stock sealed crate engine cars are 25%...

The Coyote Stock sealed crate engine cars are 25% lighter, on the other hand you have 25% more displacement as well as engine mods. There are lots of little things that make those CS cars so quick,...
Forum: Dragstrip and Launch Techniques Discussion 02-16-2023, 09:19 AM
Replies: 34
Views: 5,572
Posted By sr530
Every single car in NMRA's Coyote Stock class...

Every single car in NMRA's Coyote Stock class runs a clutch release device on a diaphragm clutch, and they all dead hook with 20+ psi in bias slicks. NA 302cuin factory sealed crate engines on spec...
Forum: Dragstrip and Launch Techniques Discussion 02-15-2023, 10:35 AM
Replies: 34
Views: 5,572
Posted By sr530
Starting line rpm is stored energy you make...

Starting line rpm is stored energy you make before the clocks start, and then put to work after the clocks start running. Another 1300 on the starting line could add around 130ftlbs for .6 of a...
Forum: Dragstrip and Launch Techniques Discussion 02-14-2023, 10:36 AM
Replies: 34
Views: 5,572
Posted By sr530
If you could stick a 6800 launch, that would make...

If you could stick a 6800 launch, that would make quite a difference.

Grant
Forum: Dragstrip and Launch Techniques Discussion 02-09-2023, 10:47 PM
Replies: 34
Views: 5,572
Posted By sr530
There's at least half a second to be gained...

There's at least half a second to be gained inside the bellhousing... :)

Grant
Forum: Dragstrip and Launch Techniques Discussion 09-05-2022, 11:24 AM
Replies: 53
Views: 12,544
Posted By sr530
Clutches are much like brakes, they will last a...

Clutches are much like brakes, they will last a long while until you start exceeding their thermal capabilities. That said, it's hard to fit a high HP drag race capable clutch inside a Subaru...
Forum: Dragstrip and Launch Techniques Discussion 09-03-2022, 05:19 PM
Replies: 53
Views: 12,544
Posted By sr530
https://grannys.tripod.com/clutchtamerinfo.html ...

https://grannys.tripod.com/clutchtamerinfo.html
https://grannys.tripod.com/hitmaster.html

Grant
Forum: Dragstrip and Launch Techniques Discussion 09-03-2022, 12:08 AM
Replies: 53
Views: 12,544
Posted By sr530
You could soften the hit after the shifts by...

You could soften the hit after the shifts by swapping out that Spec 3 disc for a dual friction disc. But not a Spec 2+ style dual friction with Kevlar on one side, I would recommend a Ram Powergrip...
Forum: Dragstrip and Launch Techniques Discussion 08-31-2022, 11:40 PM
Replies: 53
Views: 12,544
Posted By sr530
Clutch engagement rate is key to getting the most...

Clutch engagement rate is key to getting the most power possible thru a manual drivetrain in a drag race setting without breaking parts. It also happens to be the key to being quick. Hard for some to...
Forum: Dragstrip and Launch Techniques Discussion 06-21-2022, 03:38 PM
Replies: 53
Views: 12,544
Posted By sr530
Nothing wrong with that, much the same reason I...

Nothing wrong with that, much the same reason I make my clutch hit controllers.

Grant
Forum: Dragstrip and Launch Techniques Discussion 06-21-2022, 10:11 AM
Replies: 53
Views: 12,544
Posted By sr530
Hitmaster is a positive displacement device that...

Hitmaster is a positive displacement device that momentarily limits throwout bearing return travel, converting your clutch into a 2-stage unit. 1st stage of limited TOB travel allows you to...
Forum: Dragstrip and Launch Techniques Discussion 06-18-2022, 12:39 PM
Replies: 53
Views: 12,544
Posted By sr530
My Hitmaster clutch hit controller allows you to...

My Hitmaster clutch hit controller allows you to incrementally loosen up clutch engagement until you find your sweet spot. Far safer for your clutch vs occasionally blowing past the sweet spot while...
Forum: Dragstrip and Launch Techniques Discussion 02-23-2022, 10:29 AM
Replies: 19
Views: 3,780
Posted By sr530
The magic you need will come from controlling...

The magic you need will come from controlling clutch engagement. Lots of trial and error in trying to perfect a foot-controlled launch, lots of wear/tear on the drivetrain as well. You can avoid that...
Forum: Dragstrip and Launch Techniques Discussion 01-28-2022, 03:04 PM
Replies: 3
Views: 1,485
Posted By sr530
The tuning process on the above link is about not...

The tuning process on the above link is about not leaving anything on the table. If launch is your only concern, tuning process is pretty straight forward.

Here's direct links to the...
Forum: Dragstrip and Launch Techniques Discussion 01-24-2022, 10:14 AM
Replies: 3
Views: 1,485
Posted By sr530
Putting Some Torque Numbers On A Stick Shift Launch!

Here's a link to my page on analyzing a stick shift launch and clutch tuning in general... https://grannys.tripod.com/clutchtuning.html

Grant
Forum: Dragstrip and Launch Techniques Discussion 10-26-2020, 11:23 PM
Replies: 3
Views: 1,359
Posted By sr530
Without a clutch hit controller, a twin will be a...

Without a clutch hit controller, a twin will be a step in the wrong direction if your goal is better 60's. A clutch with barely enough capacity to hold high gear will be quicker.

Grant
Forum: Dragstrip and Launch Techniques Discussion 10-26-2020, 10:30 AM
Replies: 3
Views: 1,359
Posted By sr530
Too much clutch will limit you to low rpm...

Too much clutch will limit you to low rpm launches, which also limits your ability to store inertia before the hit. The basic problem is, a diaphragm clutch that gives you enough slip for the best...
Forum: Dragstrip and Launch Techniques Discussion 09-02-2020, 12:17 PM
Replies: 113
Views: 26,273
Posted By sr530
I don't know what style device you plan to diy,...

I don't know what style device you plan to diy, but I built my first version of the ClutchTamer years ago for about $20 using hardware store materials...
...
Forum: Dragstrip and Launch Techniques Discussion 08-24-2020, 11:02 AM
Replies: 113
Views: 26,273
Posted By sr530
The MAP brand unit is pretty much the same thing...

The MAP brand unit is pretty much the same thing as a Magnus unit, but neither of those two are the same thing as the ClutchTamer or Hitmaster units.

Here's the shape of hydraulic pressure release...
Forum: Dragstrip and Launch Techniques Discussion 06-13-2020, 12:02 AM
Replies: 40
Views: 8,584
Posted By sr530
This thread has some info on installing clutch...

This thread has some info on installing clutch controllers...
https://www.camaro5.com/forums/showthread.php?t=566170

Grant
Forum: Dragstrip and Launch Techniques Discussion 06-12-2020, 11:58 PM
Replies: 40
Views: 8,584
Posted By sr530
Have FUN! It's rained here the last couple...

Have FUN! It's rained here the last couple weekends, supposed to rain this weekend as well :(

Grant
Forum: Dragstrip and Launch Techniques Discussion 06-12-2020, 10:25 AM
Replies: 40
Views: 8,584
Posted By sr530
My Hitmaster clutch hit controller can fix the...

My Hitmaster clutch hit controller can fix the problems you guys are having with slipping the clutch, it can also be set up to soften the clutch hit on the shifts as well. Big help for keeping an irs...
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