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 Brocks Clutch Mod Install Gen II ZX-14r 
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wee


Mon Jan 21, 2013 4:50 pm
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How many of you guys have one? Just as necessary on these bikes as a Busa? Don't really hear too many people saying they have one


Fri Aug 09, 2013 5:19 pm
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Crawlin wrote:
How many of you guys have one? Just as necessary on these bikes as a Busa? Don't really hear too many people saying they have one
I have one .. Wee and Shane have one as do most drag racers ... Do you need one ? Well if you leave soft you might not need one .. If you leave like we do ( 1.30 60 footers ) you need it ..

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Fri Aug 09, 2013 5:24 pm
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SmokinZX14 wrote:
Crawlin wrote:
How many of you guys have one? Just as necessary on these bikes as a Busa? Don't really hear too many people saying they have one
I have one .. Wee and Shane have one as do most drag racers ... Do you need one ? Well if you leave soft you might not need one .. If you leave like we do ( 1.30 60 footers ) you need it ..
I noticed a big difference during shifting at the drag strip, 14r would pick up the wheel in second gear, without the mod it never did, if I remember correctly I picked up 2-3 mph in the 1/8th mile after installing Brocks clutch mod.. btw Crawlin, a Booza clutch mod is different that a ZX-14r clutch mod.

wee


Fri Aug 09, 2013 5:44 pm
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Thanks guys.

Yeah I noticed the difference after watching this video. Pretty interesting.


Sat Aug 10, 2013 7:48 am
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Crawlin wrote:
Thanks guys.

Yeah I noticed the difference after watching this video. Pretty interesting.

You're welcome.

wee


Sun Aug 11, 2013 10:22 pm
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KyleZX-1441R wrote:
Anyone know if I need a new clutch cover gasket with this purchase?

I re-used my oem gasket a few times without any issue

wee


Fri Oct 25, 2013 2:24 am
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Question for anyone who has ran both the Brocks clutch mod and a cycle logic lockup.
Which is better for drag racing and witch is better for clutch life.


Mon Jan 27, 2014 10:43 am
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When running a lock-up you usually stay with stock springs.

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Mon Jan 27, 2014 11:44 am
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I'll give this Mod a both thumbs up. :thumbs:
Totally got rid of my bogging issue with the slipper.
Also picked up 3 MPH and the et is going in the right direction..
Did exactly what they said it would...
Thanks Brocks..

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Tue Mar 18, 2014 3:57 pm
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1400R wrote:
I'll give this Mod a both thumbs up. :thumbs:
Totally got rid of my bogging issue with the slipper.
Also picked up 3 MPH and the et is going in the right direction..
Did exactly what they said it would...
Thanks Brocks..

:vroom:

wee


Tue Mar 18, 2014 4:13 pm
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1400R wrote:
I'll give this Mod a both thumbs up. :thumbs:
Totally got rid of my bogging issue with the slipper.
Also picked up 3 MPH and the et is going in the right direction..
Did exactly what they said it would...
Thanks Brocks..


1400R - My pleasure.

One item of note: The MPH gains are interesting... I don't think the stock clutch can handle a drag strip launch without slipping a little (small but measurable percentage).
I haven't had time to prove this on the strip, but dyno testing has shown that the OEM holding force is right on the edge for the power being produced.

Brock
www.BrocksPerformance.com


Tue Mar 18, 2014 5:57 pm
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Brock wrote:
1400R wrote:
I'll give this Mod a both thumbs up. :thumbs:
Totally got rid of my bogging issue with the slipper.
Also picked up 3 MPH and the et is going in the right direction..
Did exactly what they said it would...
Thanks Brocks..


1400R - My pleasure.

One item of note: The MPH gains are interesting... I don't think the stock clutch can handle a drag strip launch without slipping a little (small but measurable percentage).
I haven't had time to prove this on the strip, but dyno testing has shown that the OEM holding force is right on the edge for the power being produced.

Brock
http://www.BrocksPerformance.com
Brock, I noticed the gain in the shifts with the air shifter, no clutch mod no wheelie at the 2nd gear shift, with the clutch mod wheelie at the 2nd gear shift. I knew the clutch was soft when I noticed that, and my mph was around the same as my Gen I, after I installed your mod I picked up 3 mph for sure and a 10th of a second in the 8th mile if I remember correctly. Bigger guys will notice this more than the fly weights.

wee


Tue Mar 18, 2014 6:47 pm
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Wheelie wrote:
Brock wrote:
1400R wrote:
I'll give this Mod a both thumbs up. :thumbs:
Totally got rid of my bogging issue with the slipper.
Also picked up 3 MPH and the et is going in the right direction..
Did exactly what they said it would...
Thanks Brocks..


1400R - My pleasure.

One item of note: The MPH gains are interesting... I don't think the stock clutch can handle a drag strip launch without slipping a little (small but measurable percentage).
I haven't had time to prove this on the strip, but dyno testing has shown that the OEM holding force is right on the edge for the power being produced.

Brock
http://www.BrocksPerformance.com
Brock, I noticed the gain in the shifts with the air shifter, no clutch mod no wheelie at the 2nd gear shift, with the clutch mod wheelie at the 2nd gear shift. I knew the clutch was soft when I noticed that, and my mph was around the same as my Gen I, after I installed your mod I picked up 3 mph for sure and a 10th of a second in the 8th mile if I remember correctly. Bigger guys will notice this more than the fly weights.

wee


Thank's wee,

We had a modified 14R, with a stock clutch, drive right through it on the dyno - it picked up 22 HP at 7200 RPM (max torque) after we installed our mod. We have had customers call to say they didn't pick up power (or not enough) after installing our pipe and map, or didn't go any faster on top end - of course, this isn't possible. Dig a little deeper to find that they are 'just street riders' so they didn't install our clutch mod 'for drag racing'... reality is that they didn't notice the proper power gains because the stock clutch begins to slip as you increase power over stock. Go fast guys like myself and people who speak to my staff will install our 'combination' to extract to most from their bikes; others pick and choose and might miss out... usually having no idea that a small detail is slowing them down. 3 MPH in the quarter is the dynamic equivalent of being down (or UP!) 12-15 HP - any way you look at it, that's a BUNCH.

Brock
http://www.BrocksPerformance.com


Wed Mar 19, 2014 9:34 am
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Going to Brocks site now. Is the Gen 1 clutch mod still streetable? I ride it to the track and back. :thanks:


Sat Apr 26, 2014 1:01 am
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fordtech58 wrote:
Going to Brocks site now. Is the Gen 1 clutch mod still streetable? I ride it to the track and back. :thanks:


fordtech58,

The Gen 1 14's only require a slight adjustment to the spring pressure, no mod is required.http://www.brocksperformance.com/Clutch-Spring-Spacer-Kit-180-Thick+I270318+C30.aspx The spacers are 100% streetable, they only increase the lever pressure a bit.

If you drag race quite a bit, or you are a 'larger' guy (above 170 lbs or so - like me) I would suggest this: http://www.brocksperformance.com/Clutch-Spring-Kit-With-280-Thick-Spacer+I270162+C31.aspx Same deal: 100% streetable, they increase the lever pressure quite a bit, but not unmanageable by any means.

Hope this helps

Brock
http://www.BrocksPerformance.com


Mon Apr 28, 2014 9:13 am
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On the Dyno my bike was blowing through the stock clutch at anything slightly over 200 hp. Brocks Clutch mod was installed and pulled 278 with Zero issues. Great mod very pleased. :thanks: Brock

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Mon Apr 28, 2014 11:19 am
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Romans,

Ha! We see the same thing... but our guys get mad when stock engine bikes see slip above 200 HP ;)

Nice power.

Brock
www.BrocksPerformance.com


Mon Apr 28, 2014 1:44 pm
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Can I just install a shim behind the springs without disabling the slipper clutch? I don't plan to drag race the bike, but I don't want a slipping clutch either.

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Mon Apr 28, 2014 5:27 pm
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Nastynotch wrote:
Can I just install a shim behind the springs without disabling the slipper clutch? I don't plan to drag race the bike, but I don't want a slipping clutch either.
You could install the spring seat washer , spring and spring tops and washers ( shims) without removing the slipper or installing the large washer that removes the slipper ..BUT I don't feel that would be a good idea ..They are all made to work together and just using one part of the clutch mod MAY cause a problem .. If you are just looking to increase spring pressure and stop any slipping I would call brock and get a set of stronger springs that are correct for the bike .. I don't know anyone that has tried to do what you are thinking of doing , so I have no clue if it would work correctly ..

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Mon Apr 28, 2014 5:39 pm
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I have done just what your asking with no problems I bought the mod kit but have not removed the slipper clutch yet, I will but I have not yet. And I have had no problems on street or track


Tue Apr 29, 2014 2:28 am
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Great! Going to look into this. Thanks fellas.

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Tue Apr 29, 2014 6:29 am
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Brock, Thanks for your reply. I've ordered both the spring kit with .280 spacers and also the .180 spacers and plan on trying them both. Most of my street riding is a 15 mile trip to the track. I ride in, run low 9's and ride it home. Thanks for your time and efforts on this site.


Sat May 03, 2014 12:31 pm
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How close will this get the lever to feel more like a cable instead of hydraulic ?

And what does this put wear/stress on since your adding more pressure?


Fri May 30, 2014 10:25 am
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With 180 shims lever has just a little more pressure, it will have less wear on the plates.

wee


Fri May 30, 2014 10:49 am
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Would this have any benefit for a mostly street ridden bike? I will be hitting the track occasionally but not mainly. Thoughts?


Sun Jan 11, 2015 10:46 am
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on_2 wrote:
Would this have any benefit for a mostly street ridden bike? I will be hitting the track occasionally but not mainly. Thoughts?
A daily commuter wouldn't need them, if you want to gain mph you need them. Depending on your weight you could gain 3-4 mph in the 1/8th mile.

wee


Sun Jan 11, 2015 11:15 am
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Ok, I'm 6'3 215 unsuited.


Sun Jan 11, 2015 11:26 am
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on_2 wrote:
Ok, I'm 6'3 215 unsuited.
I picked up 3-4 mph at that weight, bike was at 69", autoshift, good air, and a good track,

wee


Sun Jan 11, 2015 11:30 am
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Brock,

I have a question for this clutch mod. I have my slipper welded in my 10, but have been reading about how much the 14 picks up with it. Is the difference in power and mph picked up just because the stock springs can't hold the power? If I remember right the stock springs are 65lb springs. I have 95lb springs in my bike now. Will I see any difference with the clutch mod at the track even though I have really stiff springs now?


Thu Feb 26, 2015 9:23 am
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Hey guys, do you think there is any benefit to installing just the HD springs into a Gen 1 ZX14? Never hit the strip, but street race when I can.


Mon Mar 21, 2016 11:12 am
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JGIG73 wrote:
Hey guys, do you think there is any benefit to installing just the HD springs into a Gen 1 ZX14? Never hit the strip, but street race when I can.


On my 2012 14R I installed the spring kit but kept the slipper clutch.

The standard pack gives 270 pounds of pressure and I installed the Brock's base washer, springs and 180 thou shims which increased it to 390 pounds.

I was using the bike for LSR and was never aware of any clutch slip at high rpm and the lever pressure was ok too.


Thu Jul 28, 2016 8:45 am
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BobC wrote:
On my 2012 14R I installed the spring kit but kept the slipper clutch.

The standard pack gives 270 pounds of pressure and I installed the Brock's base washer, springs and 180 thou shims which increased it to 390 pounds.
I was using the bike for LSR and was never aware of any clutch slip at high rpm and the lever pressure was ok too.

I kind of like the idea of keeping the slipper clutch. Was the slipper aspect affected by the increase in spring pressure?


Tue Jan 24, 2017 10:58 am
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It had no effect on mine.

wee


Tue Jan 24, 2017 4:36 pm
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