A to Z Posted July 24, 2023 Share Posted July 24, 2023 On my clutch setup, I noticed that I wasn't getting enough "push" from the clutch master cylinder. According to the FSM, there should be 8.78 inches distance from teh firewall to the front of the pedal (see pic I attached). When I measured mine it was only 6.5 inches !!! so somehow, my rod is 2 3/8 inches too short! I am assuming I can buy a thread on coupling and some additional all thread to make up the length that is not there, but I am noticing that the clutch pedal stop is screwed out keeping it from coming up any more. So, I know I can simply adjust that out to let it come up, but I am wondering if anyone else has had this problem? 1972 240Z Quote Link to comment Share on other sites More sharing options...
calZ Posted July 24, 2023 Share Posted July 24, 2023 How do you know the rod is too short if the pedal is resting on the stop? Quote Link to comment Share on other sites More sharing options...
A to Z Posted July 25, 2023 Author Share Posted July 25, 2023 the measurement from the firewall to face of pedal pad is 6.5 inches instead of 8.78 inches per the factory manual Quote Link to comment Share on other sites More sharing options...
A to Z Posted July 25, 2023 Author Share Posted July 25, 2023 also the clutch pedal is much lower than the brake pedal. Quote Link to comment Share on other sites More sharing options...
jonbill Posted July 25, 2023 Share Posted July 25, 2023 How much rod is visible at the slave cylinder? Have you changed the clutch? Quote Link to comment Share on other sites More sharing options...
calZ Posted July 25, 2023 Share Posted July 25, 2023 12 hours ago, A to Z said: the measurement from the firewall to face of pedal pad is 6.5 inches instead of 8.78 inches per the factory manual Yes, you said this already. You said if you adjust the stop, the pedal will come up further. That would change your measurement, would it not? Quote Link to comment Share on other sites More sharing options...
A to Z Posted July 27, 2023 Author Share Posted July 27, 2023 the pedal won't move up if the stop is turned in, unless you unhook the clutch rod. It is too short. Quote Link to comment Share on other sites More sharing options...
A to Z Posted July 27, 2023 Author Share Posted July 27, 2023 On 7/25/2023 at 2:10 AM, jonbill said: How much rod is visible at the slave cylinder? Have you changed the clutch? Entire new clutch kit and conversion kit from Godzilla Raceworks, as this car is an automatic transmission to manual stop. Whole whole kit is from exedy and matched. The clutch master cylinder is exedy, and the rod is just too short! Quote Link to comment Share on other sites More sharing options...
jonbill Posted July 27, 2023 Share Posted July 27, 2023 Fair enough. Did the conversion kit add a spacer or any other material to the clutch mc bulkhead mount point? Quote Link to comment Share on other sites More sharing options...
A to Z Posted July 31, 2023 Author Share Posted July 31, 2023 no...... I went ahead and lengthened it over all by one full inch. Before the clutch pedal was 6.5 inches off the floor. With this extension, the pedal is at maximum movement up, around 10 inches. The factory recommends the pedal height to be 8.78 inches. I went ahead and tried it anyway. It DOES work, in that I can shift gears, put it in reverse, etc. But the clutch takeup is right at the end of the pedal travel, and there is NO play in the pedal at all. Should I make the extension 1/2 inch instead of 1 inch? I don't have a longer rod to just swap out. Attached is a pic of my extension. It is a threaded coupling with nuts on both end to lock it, with threads screwed in the end for teh fork to screw on. it isn't flimsy at all, it actually is very stout. Please HELP! Quote Link to comment Share on other sites More sharing options...
A to Z Posted July 31, 2023 Author Share Posted July 31, 2023 could it be as simple as welding a nut on the end of the fork and screwing into just that, no farther, and that 3/8 of an inch could make the difference? Quote Link to comment Share on other sites More sharing options...
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