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-   -   Clutch pedal broke while driving (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/clutch-pedal-broke-while-driving-450101/)

Juan 12-23-07 12:24 PM


Originally Posted by andrewdruiz (Post 7657156)
Shoot son, where's the wrecking yard with FD's in it? I'm down to strip those sucka's down to nothing!

Wrecking yards, not junk yards. The guy with this wrecking yard was shady. It's at the end of long dirt driveway. He had about 3 FDs total which were all cut longways in half. I think I still have his number and address. We can go check out the place and talk to the workers one of these days. :)

1QWIK7 12-23-07 12:36 PM

Shit, how did you drive home with no clutch?

I know you put it in 2nd gear but what about stop lights/signs? Getting into the driveway of your home?

Or in easier terms, braking?? lol

2Lucky2tha7 12-23-07 01:03 PM

^ I had to do that for a week before. I know my starter was hating it because I left my pedal at the floor (because my clutch master cylinder and slave cylinder died) and when I was forced to stop at traffic lights and I couldn't coast long enough from far away, I would shut it off and then when I had to go, I would keep it in 1st and crank it over and give it gas and off I went. The rest was all speed shifting, which I good at real fast. My car was my only mode of transportation and I had to work. I was also waiting for the parts to come in.

t2terror 03-30-10 11:01 AM

After searching I saw this thread and thought I might update it with an picture to show my experience as well!

http://www.imagechicken.com/uploads/...5068007100.jpg

It broke just like "wan" had described. Except I loaded it on a trailer instead of driving it back :-)
A $3.50 part has my part broke down for two days until the part comes in courtesy of Ray at Malloy Mazda. Actually the shipping was more than twice as much as the part itself.

DaveW 03-30-10 02:14 PM

Did you read the rest of the thread? This will happen again shortly if your bushing is defunct and the clutch pedal is worn as described previously. You need to fix the root cause, not just the result!

1QWIK7 03-30-10 03:48 PM

God, reading stuff like this makes me scared to drive my car now lol

gnictry 03-30-10 03:52 PM

same thing happen to a member named sweeley on this form...he welded it back in get going again...

Juan 03-30-10 04:51 PM


Originally Posted by 1QWIK7 (Post 7657213)
Shit, how did you drive home with no clutch?

I know you put it in 2nd gear but what about stop lights/signs? Getting into the driveway of your home?

Or in easier terms, braking?? lol

I pushed the car as fast as I could (I was alone), jumped in the drivers seat and I had enough speed to get it into second gear. Putting it in first would have slowed me down significantly and possibly would have stalled the car.

I got home by floating the gears and timing the stop lights by driving real slow up to them crossing my fingers they would get green before I reached them. I was on the freeway most of the way which wasnt a big deal but I did end up running one red light right as I got home, good thing I was the only car on the road at about 3 am, and coasted up my driveway with the engine off. Going up the driveway was the scariest part since I only had so much room to get in and brake before smashing into the house without power steering or the brake booster helping me :lol:


Originally Posted by t2terror (Post 9902652)
After searching I saw this thread and thought I might update it with an picture to show my experience as well!

http://www.imagechicken.com/uploads/...5068007100.jpg

It broke just like "wan" had described. Except I loaded it on a trailer instead of driving it back :-)
A $3.50 part has my part broke down for two days until the part comes in courtesy of Ray at Malloy Mazda. Actually the shipping was more than twice as much as the part itself.

Make sure you check your clutch pedal for wear and replace all those parts like I did.


Originally Posted by DaveW (Post 9903159)
Did you read the rest of the thread? This will happen again shortly if your bushing is defunct and the clutch pedal is worn as described previously. You need to fix the root cause, not just the result!

Yup. :icon_tup:

t2terror 03-30-10 08:01 PM


Originally Posted by DaveW (Post 9903159)
Did you read the rest of the thread? This will happen again shortly if your bushing is defunct and the clutch pedal is worn as described previously. You need to fix the root cause, not just the result!


I did read the rest of the thread, but I had already ordered the part while the car was still on the side of the road and I was waiting for the trailer. I'll look more closely tomorrow and check the remaining part of the clutch assembly.

Juan 03-30-10 08:37 PM

Just noticed you have the same FD as me down to the year, color and package! The only difference is mine has an all black leather interior. Must be a conspiracy against white FDs :ponder:

TwinCharged RX7 03-30-10 09:28 PM

I'm going to go check my pedal now haha.

t2terror 03-31-10 07:20 AM


Originally Posted by wan (Post 9904156)
Just noticed you have the same FD as me down to the year, color and package! The only difference is mine has an all black leather interior. Must be a conspiracy against white FDs :ponder:

Ha, yeah it must be a conspiracy! Your FD looks amazing and an all black interior is what I'm shooting for as well... I wonder how many of ours with the same color and package there are?

DaveW 03-31-10 08:59 AM


Originally Posted by t2terror (Post 9904073)
I did read the rest of the thread, but I had already ordered the part while the car was still on the side of the road and I was waiting for the trailer. I'll look more closely tomorrow and check the remaining part of the clutch assembly.

Good. Just wanted to make sure you didn't get stranded again!

Dave

Speed of light 03-31-10 02:24 PM

3 Attachment(s)
My clutch pedal started to get sticky at about 140,000mi or so. Upon inspection, I too found a broken bushing and elongated hole.

My solution was to bore the lever and press in a roller bearing. Before you flame me, I considered the stresses in the beam and concluded that this would work fine.

Putting a real bearing here substantially reduces friction and has transformed the feel of the clutch, it makes the plate feel lighter and it is much easier to modulate. One of the best mods I have made to the driving feel and enjoyment of the car.

In so far as reliability is concerned, I did this mod 6 years ago and have put 50,000miles of daily use on it with lots of stop & go; most of those miles with a heavy ACT EXTREME pressure plate installed (and a reinforced clutch fork). No problems.

sbnrx7 03-31-10 03:12 PM


Originally Posted by andrewdruiz (Post 7657156)
Shoot son, where's the wrecking yard with FD's in it? I'm down to strip those sucka's down to nothing!


^^ Knew this one was coming.

gracer7-rx7 03-31-10 03:12 PM


Originally Posted by Speed of light (Post 9906006)
My clutch pedal started to get sticky at about 140,000mi or so. Upon inspection, I too found a broken bushing and elongated hole.

My solution was to bore the lever and press in a roller bearing. Before you flame me, I considered the stresses in the beam and concluded that this would work fine.

Putting a real bearing here substantially reduces friction and has transformed the feel of the clutch, it makes the plate feel lighter and it is much easier to modulate. One of the best mods I have made to the driving feel and enjoyment of the car.

In so far as reliability is concerned, I did this mod 6 years ago and have put 50,000miles of daily use on it with lots of stop & go; most of those miles with a heavy ACT EXTREME pressure plate installed (and a reinforced clutch fork). No problems.



I always wondered how you did that. Thanks for the pics.




This is now linked to in the FAQ thread.

Speed of light 03-31-10 07:59 PM

If there is interest out there in having this clutch pedal bearing conversion performed, let me know; I'm sure I still have the tooling.

t2terror 03-31-10 09:29 PM


Originally Posted by Speed of light (Post 9906006)
My clutch pedal started to get sticky at about 140,000mi or so. Upon inspection, I too found a broken bushing and elongated hole.

My solution was to bore the lever and press in a roller bearing. Before you flame me, I considered the stresses in the beam and concluded that this would work fine.

Putting a real bearing here substantially reduces friction and has transformed the feel of the clutch, it makes the plate feel lighter and it is much easier to modulate. One of the best mods I have made to the driving feel and enjoyment of the car.

In so far as reliability is concerned, I did this mod 6 years ago and have put 50,000miles of daily use on it with lots of stop & go; most of those miles with a heavy ACT EXTREME pressure plate installed (and a reinforced clutch fork). No problems.

You are the man, after I looked at the clutch arm; it's in the shape of an oval :-) I will perform this mod and save myself the time of searching the net for a good replacement arm as well as possibly buying a new one! This is my latest bookmark ;-)

t2terror 04-01-10 10:29 AM

A few questions about this mod in the effort to save time...

1. Did you buy a replacement pin or bushing to go back in the bearing?

2. What size of roller bearing did you purchase?

3. How much would you charge with shipping in order to do this?

Thanks man!

Speed of light 04-02-10 12:03 AM


Originally Posted by t2terror (Post 9908003)
A few questions about this mod in the effort to save time...

1. Did you buy a replacement pin or bushing to go back in the bearing?

2. What size of roller bearing did you purchase?

3. How much would you charge with shipping in order to do this?

Thanks man!

No problem, in response to your questions:

1) No, I used the existing pin as it was undamaged. It properly fits the ID of the bearing with no bushing required;

2) I don't recall the exact size off the top of my head. It is a metric size, as most
bearings are, it fits the pin in the ID and the width of the brake pedal; the od is de minimis;

3) I estimate the cost of the service at about $65 to $75, including bearing and return shipping (shipping is based on a medium-sized domestic USPS priority mail flat rate box) Maybe a little less if there is enough interest.

Additionally, I will estimate turnaround as 2 to 3 days from reciept at the standard price. It will be more if you want same day/rush service and/or overnite shipping. I think this is reasonable. And you'll like the result.

A note of warning: If you attempt to do this yourself and you oversize the hole--by even a small amount, it will eventually result in a fatigue failure due to constant flexing over time. This mod depends on the bearing to provide structure to the beam section (removed by boring) while it is under compression. Conversely, the bearing cannot be pressed in too tight as the back side of beam is thin and could easily be split.

The way this operation will be performed is by boring (not drilling) the lever in a mill fixture to properly locate the bore, sizing the hole for a very light press fit and fixing the bearing. Pin location remains stock.

Hope this helps.

DaveW 04-02-10 09:06 AM

If I may, I would like to suggest an alternate fix:

Use a "DU" bushing for the repair - these are used in many racing applications and have extremely long life, high load capacity, very low friction, small OD, and are inexpensive, while requiring less hogging out of the pedal. They are available at almost any bearing-supply house. For instance, Applied industrial Technology ( http://www.appliedindustrial.com/ ) has them.

1. Size the "DU" bushing (steel outside, layer of porous bronze inside that, and Teflon/lead layer inside that) to be the proper ID and width to fit the pedal arm and the pin.
2. Machine a spacer to fit the OD of the DU bushing (they are quite thin-walled) to make the OD match the hole you want (as small a possible while having a circular hole) in the pedal.

The advantages are price and smaller hole in the pedal. If i need to repair mine, that is what I will do.

t2terror 04-25-10 06:57 PM

5 Attachment(s)
Well I got the part in the other day and after a few days of driving around; the clutch feels sooooooo much better! It makes my pettit rally pressure plate feel almost like stock now. The shifts are very much improved, especially 3rd gear. The whole thing just works and I shouldn't have any troubles with the new setup!

Attachment 718898
Attachment 718899
Attachment 718900

I picked up the bearing at a local bearing and transmission shop. It's from a company called "Peer Bearing" and their part number is "608-ZZ-C3" It's labeled dimensions are "8x22x27, shielded"
Attachment 718901
Attachment 718902

t2terror 04-25-10 07:01 PM

Oh and in the second picture, the rod was replaced by a brand new one. So things are nice and straight ;-) <---- Preventing any post about that.....

toppy 06-08-10 07:02 AM


Originally Posted by wan (Post 4634787)
Are "JDM" right hand drive pedals different?

Did you find out the answer for this?

PandazRx-7 06-08-10 02:04 PM

Looks like Grainger carries that bearing too...and it lists all the specs including load capacity. http://www.grainger.com/Grainger/items/1L001

Was the ID a good match?


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