gilberjj
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posted September 21, 2010 03:36 PM
turbo clutch setup
I'm in the market for a lockup clutch, but I'm also wondering.... How much power would springs and spacers hold on a stock clutch? I have the Brocks springs in, and I was thinking about adding the spacers anyway because it isn't that much different then stock. I like the increaced lever feel...
Shooting for 300whp max.
  
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Compton
Zone Head
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posted September 21, 2010 03:47 PM
bikes are making 350-370 rwhp on the "Real street" clutch setup from adams, heavy springs and spacers.
300 wont be a problem
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b.w.
zx14, little longer, little louder, little lower.
08 Busa, just a little longer and louder and lower than the 14
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gilberjj
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posted September 21, 2010 03:51 PM
Great..... i like to hear that! Who makes the heaviest springs? Anyone make their own spacers? I imagine should be simple to add shims/spacers to my clutch to stiffen it up some more.
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eklipse636
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ZX-14
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posted September 21, 2010 03:53 PM
quote:
bikes are making 350-370 rwhp on the "Real street" clutch setup from adams, heavy springs and spacers.
300 wont be a problem
just something to consider, the real street guys have to check their clutches every few passes. Ask Roger Starrette.
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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gilberjj
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posted September 21, 2010 03:57 PM
quote:
quote:
bikes are making 350-370 rwhp on the "Real street" clutch setup from adams, heavy springs and spacers.
300 wont be a problem
just something to consider, the real street guys have to check their clutches every few passes. Ask Roger Starrette.
Well...... i'm not really interested in doing that..... I know of one member that ran the stock clutch (no springs or spacers) at 250whp for a over 20k miles. Just wondering if adding some pressure via springs and spacers could RELIABLY take me to 300whp?
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01smokes
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posted September 21, 2010 04:04 PM
springs will hold the power and you dont have to check them after every pass, if your racing in a class like they are i would check em but i dont race a class....
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gilberjj
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posted September 21, 2010 04:10 PM
quote:
springs will hold the power and you dont have to check them after every pass, if your racing in a class like they are i would check em but i dont race a class....
Did you only use springs for your 300+ whp?
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eklipse636
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posted September 21, 2010 04:56 PM
It depends on what the bike is being used for, and how it's rode.
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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01smokes
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posted September 21, 2010 05:16 PM
quote:
quote:
springs will hold the power and you dont have to check them after every pass, if your racing in a class like they are i would check em but i dont race a class....
Did you only use springs for your 300+ whp?
yep, they held fine for me a lock up would have been better but i wasn't slipping so i didn't get one
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01smokes
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posted September 21, 2010 05:19 PM
quote:
It depends on what the bike is being used for, and how it's rode.
if you want every little last bit out of the bike than ya the lock up would be the way to go that or the heavy springs and checking the height after every few passes, and adjusting it, to the the same every time out.
I rode my bike on the street mostly but it did see the track from time to time.
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06redzx14
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posted September 21, 2010 05:49 PM
brock's springs with real street spacers for me
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06 alien head, no flies, PC+hub, 16/45 44 43, air shifter, dry shot
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Compton
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posted September 21, 2010 06:49 PM
quote:
quote:
bikes are making 350-370 rwhp on the "Real street" clutch setup from adams, heavy springs and spacers.
300 wont be a problem
just something to consider, the real street guys have to check their clutches every few passes. Ask Roger Starrette.
lockup or not, any bike with 300+ hp would be checking the clutch. Its cheap insurance after every pass to catch something before it really gets bad.
the more the HP goes up, the more the repairs go up.
____________
b.w.
zx14, little longer, little louder, little lower.
08 Busa, just a little longer and louder and lower than the 14
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1badzx12r
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posted September 21, 2010 07:09 PM
 Edited By: 1badzx12r on 22 Sep 2010 03:11
you guys are funny . if your going to ride the street then get a lock-up . because them REAL street guys don't pass cars in 6th @4500 rpm with 300rwhp bikes .
maybe a 30 mile pie run should be enforce as a rule before the race. then we see how many of them bikes are REAL street ..
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gilberjj
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posted September 21, 2010 09:21 PM
Actually 1bad, springs and spacers are much better for pulls in 6th gear at 4500 rpm... You want static pressure for low end stuff. Lockups hold tighter with rpm. Besides, torque is what makes clutches slip, and last time I checked my bike made peak torque at about double that!
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1badzx12r
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posted September 21, 2010 09:40 PM
Edited By: 1badzx12r on 22 Sep 2010 05:42
try what you got . but i done did that long time ago and mine slip in every day riding on the street . lock-up arms are in from 2k rpm to redline unless you have hold back springs ..and even with hold back springs @4 to 5 k rpm and no weight them arms are engaging .it just gets more static pressure with more rpm ..
i test this stuff with a see thru clutch cover and watch how the arms are effected by adding weight .
even on my low 260 HP BUSA WITH heavy springs and washers .the clutch will let loose when i pin it in 6th @5k rpm to make a pass . but if i launch it from 1st thru 6th i get no slip ..
but my bikes are having to carry 275lbs of me
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01smokes
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posted September 21, 2010 09:47 PM
quote:
try what you got . but i done did that long time ago and mine slip in every day riding on the street . lock-up arms are in from 2k rpm to redline unless you have hold back springs ..and even with hold back springs @4 to 5 k rpm and no weight them arms are engaging .it just gets more static pressure with more rpm ..
i test this stuff with a see thru clutch cover and watch how the arms are effected by adding weight .
even on my low 260 HP BUSA WITH heavy springs and washers .the clutch will let loose when i pin it in 6th @5k rpm to make a pass . but if i launch it from 1st thru 6th i get no slip ..
but my bikes are having to carry 275lbs of me
i was just gonna say your a BIG guy too that could be another thing, im sure my clutch was slipping some but i think the tire would let go before the clutch would most of the time
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1badzx12r
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posted September 21, 2010 09:53 PM
Edited By: 1badzx12r on 22 Sep 2010 06:01
I'm running 1 these in my zx14 . I'm not saying to go out and buy 1 these . just showing all the tune ability
http://www.haysmachineworks.com/shopping/?page_id=78
i purchased it because of my bad 60 ft and 330 times .. I'm improving every time i hit the track and its consistent on running the same number almost every time ..
http://www.haysmachineworks.com/videos.html and as you can see most of the racer's use it that are winning
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gilberjj
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posted September 21, 2010 09:56 PM
Great points. Thanks for the tips. I'll probably buy a lockup as soon as one pops up for cheap. I don't want it slipping
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1badzx12r
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posted September 21, 2010 10:04 PM
Edited By: 1badzx12r on 22 Sep 2010 06:06
some 60ft times http://www.haysmachineworks.com/news/
not that i was expecting any 1.20's from myself
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MADDOGC5
Novice Class
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posted September 22, 2010 08:25 AM
remember to.. your weight is a factor also. i dont know how big you are, but im 320 in gear and my zx14 clutch slips with 275 hp. im trying thing but i think the lockup is the way im gonna have to go.
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LIFE IS ALL ABOUT ASS-you're either kissing it,covering it,working it off, trying to get a piece of it......or simply behaving like it!!!
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gilberjj
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posted September 22, 2010 08:34 AM
quote:
remember to.. your weight is a factor also. i dont know how big you are, but im 320 in gear and my zx14 clutch slips with 275 hp. im trying thing but i think the lockup is the way im gonna have to go.
Good point. I'm no lightweight at 250.
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1badzx12r
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posted September 22, 2010 11:32 AM
the cycle-logic work great for me when i had it installed
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zxbob
Pro
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posted September 22, 2010 03:37 PM
When we dyno'd my bike . . . . at 300 hp the clutch would'nt hold. I had only aftermarket
springs at the time. (stock plates)
I installed the MTC single stage, new friction plates (stock) and went back to the stock
clutch springs - problem solved !
Bob
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Good parts aint cheap and cheap parts aint good !
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gilberjj
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posted October 05, 2010 10:30 PM
quote:
quote:
remember to.. your weight is a factor also. i dont know how big you are, but im 320 in gear and my zx14 clutch slips with 275 hp. im trying thing but i think the lockup is the way im gonna have to go.
Good point. I'm no lightweight at 250.
Are you using springs or spacers or both?
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johnbull
Expert Class
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posted October 06, 2010 04:26 AM
Interesting post.
We are using stock plates and uprated springs on our supercharged ZX14 engined racecar and running about 11 psi of boost.
We have been running the car all year in hillclimbs and just a few weeks ago had a weekend of circuit racing which really hammers the engine and transmition without a hint of clutch problems. Last weekend we had a hillclimb and for the first time ever we started with clutch slippage.
What I would like to know is for our application where downshifts are just as important as upshift would a Lockup clutch be ok for this application??
All suggestions are welcome.
____________
John Bul Racing. Malta.
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