RJM Clutch Pedal System for 370Z - Fully Customizable Clutch Feel & Stroke

JARblue · 05-20-2014, 07:52 AM

Ryan, is there a way to adjust the pedal height without affecting the clutch rod position? I know the two pre-installed loose bolts (7/16") allow a large portion of the assembly including the pedal to slide up and down, but this directly impacts the position of the CMC rod. I have found that to have the rod horizontal, which I understand is how it needs to be, the pedal has to be lowered all the way down. It is even with the brake pedal and looks fine, but I'm finding the toe of my boots hit the upper arm of the pedal on occasion. TBH, I'm not exactly sure how the new pedal height compares to the stock pedal height.

Is there another way to adjust the pedal height? I ask because I will be installing a new CMC this week, so I'll be working in the vicinity if there's something I can do. If not, it's not really bothersome - I just happened to notice it a couple of times since the install.

Ryan @ RJM · 05-20-2014, 07:36 PM

Quote:

Originally Posted by JARblue

Ryan, is there a way to adjust the pedal height without affecting the clutch rod position? I know the two pre-installed loose bolts (7/16") allow a large portion of the assembly including the pedal to slide up and down, but this directly impacts the position of the CMC rod. I have found that to have the rod horizontal, which I understand is how it needs to be, the pedal has to be lowered all the way down. It is even with the brake pedal and looks fine, but I'm finding the toe of my boots hit the upper arm of the pedal on occasion. TBH, I'm not exactly sure how the new pedal height compares to the stock pedal height.

Is there another way to adjust the pedal height? I ask because I will be installing a new CMC this week, so I'll be working in the vicinity if there's something I can do. If not, it's not really bothersome - I just happened to notice it a couple of times since the install.

JARblue, you can independently move the height of the lower arm section up/down up to 3/4" by loosening the 3 bolt connection between the upper/lower arms allowing the arm to be "clocked" to a new angle and then tighten it back up again. Although the adjustment you mentioned above with the 2 bearing pre-load bolts is specifically just for aligning the clutch rod for a straight push of the linkage and not intended for height adjustment beyond leveling the rod.
Hope that helps a bit but I suspect what you're trying to do is raise the entire assembly more on the firewall which can't be done.

JARblue · 05-21-2014, 06:37 AM

Quote:

Originally Posted by Ryan @ RJM

JARblue, you can independently move the height of the lower arm section up/down up to 3/4" by loosening the 3 bolt connection between the upper/lower arms allowing the arm to be "clocked" to a new angle and then tighten it back up again. Although the adjustment you mentioned above with the 2 bearing pre-load bolts is specifically just for aligning the clutch rod for a straight push of the linkage and not intended for height adjustment beyond leveling the rod.
Hope that helps a bit but I suspect what you're trying to do is raise the entire assembly more on the firewall which can't be done.

Gotcha, Ryan. Thanks! I will take a look at it again when I'm working on the car this weekend

onzedge · 05-21-2014, 07:19 AM

Quote:

Originally Posted by Ryan @ RJM

JARblue, you can independently move the height of the lower arm section up/down up to 3/4" by loosening the 3 bolt connection between the upper/lower arms allowing the arm to be "clocked" to a new angle and then tighten it back up again. Although the adjustment you mentioned above with the 2 bearing pre-load bolts is specifically just for aligning the clutch rod for a straight push of the linkage and not intended for height adjustment beyond leveling the rod.
Hope that helps a bit but I suspect what you're trying to do is raise the entire assembly more on the firewall which can't be done.

Ryan @ RJM · 06-14-2014, 07:26 AM

Down to just 24 left available this weekend out of the 50 that just came in last week! These will be sold out again QUICK!

140BPM · 06-17-2014, 12:01 AM

Quote:

Originally Posted by Ryan @ RJM

Down to just 24 left available this weekend out of the 50 that just came in last week!

Make that 23

Ryan @ RJM · 06-17-2014, 11:29 AM

Quote:

Originally Posted by 140BPM

Make that 23

140BPM Thank you, Order Received

You'll be receiving a formal email later today about your shipment.

Thanks,
Ryan@RJM

BA9092 · 06-27-2014, 12:14 AM

Finally had a full day off to install the RJM clutch pedal.

Wow! MUCH better modulation and engagement now! It's PERFECT! Feels like the world-famous Honda/Acura clutch feel I had on my old Accord V6, S2000, Prelude and RSX!

The instructions and construction are amazing! Took me just under 4 hours since I took my time and breaks - it was a hot and humid day here in Dallas. No problems though and everything fit perfectly.

Thank you again, Ryan!

Ryan @ RJM · 06-29-2014, 08:13 PM

Quote:

Originally Posted by BA9092

Finally had a full day off to install the RJM clutch pedal.

Wow! MUCH better modulation and engagement now! It's PERFECT! Feels like the world-famous Honda/Acura clutch feel I had on my old Accord V6, S2000, Prelude and RSX!

The instructions and construction are amazing! Took me just under 4 hours since I took my time and breaks - it was a hot and humid day here in Dallas. No problems though and everything fit perfectly.

Thank you again, Ryan!

BA9092 You're Very Welcome! I'm glad to hear you had a good install and are enjoying the new pedal assembly

theBroodwich · 07-09-2014, 12:58 AM

Just ordered, looking forward to smoother launches and upshifts!

Ryan @ RJM · 07-10-2014, 09:29 PM

Quote:

Originally Posted by theBroodwich

Just ordered, looking forward to smoother launches and upshifts!

theBroodwich Thank you, order received, fabricated and shipping out tomorrow morning for you

Best Regards,
Ryan@RJM

batboyvaj · 07-10-2014, 10:10 PM

I might have missed it, but on your site it says that this pedal system can reduce or eliminate csc failure. How does it go about doing this?

Ryan @ RJM · 07-12-2014, 04:10 PM

Quote:

Originally Posted by batboyvaj

I might have missed it, but on your site it says that this pedal system can reduce or eliminate csc failure. How does it go about doing this?

batboyvaj, I'm sure it's been covered a few times in the past 18 pages but it's good to bring it back to the top of the conversation again. Bear with me as I try to summarize in semi-point form why the RJM pedal is good for your CSC

My take on all the thousands of CSC failures out there is to do with Nissan's silly high engagement with the factory pedal assembly pushing the CSC piston right to the max extension on every pedal stroke which stresses the seals.

This leads to terrible pedal feel with both the engagement so high and the friction point so high off the floor.

Next all of that wasted travel at the bottom of the stroke before the clutch starts to engage is excess travel, wasted movement of the piston and work that you, the MC and the CSC didn't need to do. All this extra travel scrubs the CSC seals back/forth much further for every shift then they need to and accelerates the seal wear.

Finally I believe the above has been the recipe for disaster for many owners due to the following uncontrollable factor - Sudden Heat Expansion of the clutch fluid during spirited driving. If during a run thru the gears you dump a lot of heat into the clutch which heats the CSC fluid causing rapid expansion of the clutch fluid in the lines... exhaust temps spiking in the cats near the bellhousing and clutch line have a great affect too...

So now you've got hot expanding fluid in the lines that's trying to bleed back into the reservoir, a factory master cylinder that's set to max out the CSC piston right to the end of its stoke, you bang the clutch down for that next shift AND ........ POP! goes the CSC seals.

The temporary condition of having rapidly expanding fluid in the lines that doesn't get bled off fast enough to the reservoir, coupled with the next complete master cylinder stroke is too much for the seals to handle causing the piston to max out in the bore and all that excess fluid pressure needs to go somewhere so it blows out the seals and sprays fluid all into your clutch area.

Kind of like one of those shows on Discovery channel where minute by minute the right combination of factors and unfortunate timing leads to disaster... you may go years without having the magical set of circumstances that lead to instant CSC death or you may only go a few weeks. Without remedy it's bound to happen sooner or later in every cars life. Either from an instant death or a slow death from all that excess stroke over many miles wearing down the seals faster.

Ever wonder why your clutch fluid turns all black and nasty over time? That is excess heat cooking the fluid and CSC piston seal material wearing off and entering suspension in the fluid.

So all that said here is the important take away point: The RJM pedal safely and effectively reduces master cylinder stroke volume and lowers the engagement point taking away that excess CSC stroke that leads to failures.
This reduction of MC & CSC stroke when installing an RJM pedal is why the stress on the factory CSC is greatly reduced to where the CSC is no longer in danger of maxing out and popping the seals with every stroke and there's less overall seal wear for a longer overall service life.

I hope in a round about way my theory why the Nissan, Ford, Chevy, Dodge and every other manufacturer I know of who's gone to CSC's has had issues with popping them. Go drive a new Mustang or Camero, their hydraulic clutches are miles high too and owners in those camps are having huge CSC failure rates as well.

Best Regards,
Ryan@RJM

140BPM · 07-14-2014, 08:58 AM

Finally got around to installing mine this weekend. No issues with the install, but I'm pretty sore this morning

I'm still dialing it in and getting used to the new feel, but I instantaneously noticed the benefits while starting in first, especially on steep hills. Commute to work today was way less stressful.

And thanks to Ryan for providing feedback and support even on a Sunday. I had a question regarding final adjustments and got a response back within the hour. That was awesome!

Ryan @ RJM · 07-29-2014, 05:05 PM

Quote:

Originally Posted by 140BPM

Finally got around to installing mine this weekend. No issues with the install, but I'm pretty sore this morning

I'm still dialing it in and getting used to the new feel, but I instantaneously noticed the benefits while starting in first, especially on steep hills. Commute to work today was way less stressful.

And thanks to Ryan for providing feedback and support even on a Sunday. I had a question regarding final adjustments and got a response back within the hour. That was awesome!

140BPM, You're very welcome

I'm glad to hear you're enjoying the new pedal and the final adjustments are going well.

05-20-2014, 07:52 AM	#1 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 45 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684442	Ryan, is there a way to adjust the pedal height without affecting the clutch rod position? I know the two pre-installed loose bolts (7/16") allow a large portion of the assembly including the pedal to slide up and down, but this directly impacts the position of the CMC rod. I have found that to have the rod horizontal, which I understand is how it needs to be, the pedal has to be lowered all the way down. It is even with the brake pedal and looks fine, but I'm finding the toe of my boots hit the upper arm of the pedal on occasion. TBH, I'm not exactly sure how the new pedal height compares to the stock pedal height. Is there another way to adjust the pedal height? I ask because I will be installing a new CMC this week, so I'll be working in the vicinity if there's something I can do. If not, it's not really bothersome - I just happened to notice it a couple of times since the install. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

06-14-2014, 07:26 AM	#5 (permalink)
Ryan @ RJM Enthusiast Member Join Date: Aug 2012 Location: Ontario Canada Posts: 345 Drives: 09' G37S Coupe Rep Power: 14	Weekend Bump Down to just 24 left available this weekend out of the 50 that just came in last week! These will be sold out again QUICK! onzedge likes this. __________________ Home of the A.F.P. Upgraded Clutch Pedal System. Smoother Launches, Smoother Shifts & Improved Clutch Control Like No Other Pedal Mod You've Experianced Before Guaranteed! Visit www.RJMPerformance.com or Email Ryan@RJMPerformance.com Also Don't Forget to Like us on Facebook www.facebook.com/RJM-Performance

07-14-2014, 08:58 AM	#14 (permalink)
140BPM Base Member Join Date: May 2014 Location: Harrisburg, PA Posts: 55 Drives: 2009 Nissan 370Z Rep Power: 13	Finally got around to installing mine this weekend. No issues with the install, but I'm pretty sore this morning I'm still dialing it in and getting used to the new feel, but I instantaneously noticed the benefits while starting in first, especially on steep hills. Commute to work today was way less stressful. And thanks to Ryan for providing feedback and support even on a Sunday. I had a question regarding final adjustments and got a response back within the hour. That was awesome! BA9092 likes this. __________________ 2009 370Z Touring w/Sport 6MT

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07-09-2014, 12:58 AM	#10 (permalink)
theBroodwich Base Member Join Date: May 2011 Location: LA Posts: 33 Drives: 11 Nismo Rep Power: 16	Just ordered, looking forward to smoother launches and upshifts!

07-10-2014, 10:10 PM	#12 (permalink)
batboyvaj Base Member Join Date: Jun 2011 Location: mn Posts: 111 Drives: 2011 370z Rep Power: 16	I might have missed it, but on your site it says that this pedal system can reduce or eliminate csc failure. How does it go about doing this?