EricJB Posted January 4, 2012 Report Share Posted January 4, 2012 What is the OEM 240mm pressure plate with the most clamping force that will fit in a dogleg? I dont really trust the chart in the Honsowetz book, I was going to have my NAPA guy get me one, but not sure which one. 720 truck 240sx Zcar Or are they all the same? thanks Quote Link to comment
I'm BLUE Posted January 4, 2012 Report Share Posted January 4, 2012 from datzenmike ,,, read first :) ---> http://www.the510rea....php?f=2&t=5666 Eric currently in my 240z,,, I have a 1982 280zx 2+2 5spd drivetrain ,,, 240mm clutch (OEM) ,,, I love the clamping force in my current 240mm (OEM) clutch from factory ! 130,000 org miles ,,,, and the sucker never slips behind my N/A L28 :D ,,,,, the 280z coupes had 225mm clutches ! ( Very Noticeable difference between the 225mm and 240mm ! I have ran both behind same engine ! ) I am assuming my clutch is the same as a 1982-1983 280zxt ( assuming ! ) nicoclub discusses white bunny ---> http://forums.nicocl...up-t227129.html Rock Auto (240mm) 280z/280zx 2+2 (1975-1983) Datsun 720 (1983-1986) Nissan D21 (1986-1994) Quote Link to comment
EricJB Posted January 5, 2012 Author Report Share Posted January 5, 2012 Thanks for the info. After reading everything I can find, and digging through my shop, here is what I have discovered. DatzenMike is correct (again) the z24 720 truck is 240mm. That is what I have. But mine only has 6 bolts holding the pressure plate on instead of 9 from the Z car. So there is two different 240mm flywheels. So I am guessing the Z car PP is out for me. It appears I am limited to the truck. Anyone have any thoughts on this? Quote Link to comment
datzenmike Posted January 5, 2012 Report Share Posted January 5, 2012 I'm not aware of a 9 bolt PP used on the 240mm flywheel. (or any PP) I looked up both 240mm clutches and they only list 6 bolts. Even the 300zx turbo only uses 6 bolts. The 240mm '83-'86 VG30ET PP # 30210-P9600 with 600 Kg or 1,323 pounds of clamping force, will fit any 240mm flywheel. I do however believe that the zx flywheels were lighter at around 21 pounds, the truck may be heavier at 29pounds. I have a 29 pound one. Quote Link to comment
EricJB Posted January 5, 2012 Author Report Share Posted January 5, 2012 Thanks Mike. I was reading something late last night where a guy was having problems mating a Z car pp to a fywheel. I must have read it wrong. That Nicoclub link above, the pic sure looks like 9 bolts. I started thinking about dropping the Z pp over the pins and redrilling the holes. Would be nice if it bolted up. Is the 280 2+2 pp really 1700lbs like the Honsowetz book says? It's probably overkill, but I am running ladder bars, slicks,and welded spiders, so it needs to be. My 720 flywheel was 21lbs. At least thats what was in the truck when I got it. I chucked it up in a CNC lathe at work. It's now 16.4lbs. Thanks for the help. Quote Link to comment
datzenmike Posted January 5, 2012 Report Share Posted January 5, 2012 Ha ha unfortunately the 2+2 PP is the Holy Grail of 240mm PPs and .... no longer available. Quote Link to comment
EricJB Posted January 6, 2012 Author Report Share Posted January 6, 2012 So I guess thats a NO. I'll go with the # you provided. Thanks for your help. Quote Link to comment
datzenmike Posted January 6, 2012 Report Share Posted January 6, 2012 Not from Nissan. Others I wouldn't trust. The 240mm '83-'86 VG30ET PP # 30210-P9600 with 600 Kg or 1,323 pounds of clamping force are worth about $120 from Nissan... that's nothing. Quote Link to comment
EricJB Posted January 6, 2012 Author Report Share Posted January 6, 2012 How about MSA? They lied to me before, (want to buy a roll bar for a Z that "doesn't limit the travel of the seats"?) but I would order from them if it was good stuff . Quote Link to comment
Ratty260z Posted January 6, 2012 Report Share Posted January 6, 2012 I have a 10lb fidanza 240mm flywheel and a 2+2 clutch and pressure plate from MSA and it's done awesome hasn't slipped once and I can chirp the tires (215/70/14 cheapo tires) going into second gear and I dynoed about 150 rwtq. I believe the turbo guys use the 240mm setup with no slippage as well and you can get centerforce parts too. I have heard bad things about spec clutches on high horsepower l28et's. Also the zcar 240mm pressure plate does have 9 bolts but I could only use 6 on the fidanza flywheel hasn't given me any problems and I had checked it after a few hundred miles when replacing the rear main seal a while back. It takes a lot of abuse too keeping up with my buddies foxbody. B) Quote Link to comment
EricJB Posted January 6, 2012 Author Report Share Posted January 6, 2012 Hey Ratty, that flywheel is way too light for that big heavy car. Since I'm such a nice guy I will trade you for a stock one ha ha. So if your fywheel is a six bolt, and your p plate is nine, did the pins and all six bolt holes line up? Or did you have to drill something? If I only have to drill and tap three holes, piece of cake. As long as the pins line up. If the true 1700lb 2+2 pp is obsolete, I wonder what MSA is selling disguised as one. I bought a ton of stuff from them several years ago and got "suprised" a few times. If it will push your 2+2 around it will work for me. Thanks for the feedback. Quote Link to comment
datzenmike Posted January 6, 2012 Report Share Posted January 6, 2012 That's my point. I would trust the factory PP but after market anything could be substituted and will work. As top the nine bolt was it the flywheel with 9 holes or the PP?? Could be the 9 hole PP is for several applications maybe for a Mazda or something. Pretty sure the Nissan ones are 6. Quote Link to comment
EricJB Posted January 6, 2012 Author Report Share Posted January 6, 2012 Aftermarket pressure plates are like a box of chocolates. You never know what your going to get. Good to know Mike. Sometimes you have to hit me over the head with a 2x4 before it sinks in. Quote Link to comment
Sealik Posted January 6, 2012 Report Share Posted January 6, 2012 Here's the 21 lb 240mm 720 4x4 flywheel. 6 holes...3 dowels Exedy clutch..(made in Japan)....rated at 319 ft lbs of torque, which equates into.......a lot of clamping force :D If I jump in my other truck with the stock clutch....it feels....like....well.... there's no clutch installed, big difference between the 2 Quote Link to comment
Ratty260z Posted January 6, 2012 Report Share Posted January 6, 2012 Hey Ratty, that flywheel is way too light for that big heavy car. Since I'm such a nice guy I will trade you for a stock one ha ha. So if your fywheel is a six bolt, and your p plate is nine, did the pins and all six bolt holes line up? Or did you have to drill something? If I only have to drill and tap three holes, piece of cake. As long as the pins line up. If the true 1700lb 2+2 pp is obsolete, I wonder what MSA is selling disguised as one. I bought a ton of stuff from them several years ago and got "suprised" a few times. If it will push your 2+2 around it will work for me. Thanks for the feedback. I need to change my username I had to get rid of my 280z 2+2 because I couldn't title it, Its in my 260z coupe now . All I had to do was line the pressure plate up with the pins and the 6 holes lined up. Basically three bolt holes didn't line up with the pressure plate so I didn't put bolts in those 3 holes. I did some research on hybridz.org before I ran it like that and everyone else does it the same way without any problems. This is also only a issue with the Fidanza flywheel I have heard, using a different aftermarket flywheel or a stock flywheel shouldn't have this problem. Otherwise the 2+2 isn't really heavy at all I've seen them come in a 2600lbs with just a few interior bits removed. I haven't weighed my 260z but I'm guessing 2300-2500lbs at most. MSA sent me a Exedy Clutch and Pressure plate I don't remember the specs, I might still have the boxes around. Stock 240mm flywheels in the Z cars have 9 bolts in the flywheel for the Pressure plate. the 225mm Flywheel in the Z cars had only 6 bolts in the flywheel for the Pressure plate. All the Z cars had 6 bolts in the flywheel for the crank if that clears some confusion. Quote Link to comment
banzai510(hainz) Posted January 7, 2012 Report Share Posted January 7, 2012 look at the importrp.com site and look under Daiken or SPEC Brands for the 2+2 and see if part numbers are different between the 225mm Z car and the 2+2 napa might use the cheaper weaker clutch as a sub for the 2+2 as I seen Schucks used to list the weak 510 Clutch for the Roadster Quote Link to comment
EricJB Posted January 7, 2012 Author Report Share Posted January 7, 2012 NAPA is out anyways. He didn't come up with much. Who knew that buying a clutch would be such a "shell game". Hey Sealik, where did you get the Exedy stuff? Do you have the part #'s? Quote Link to comment
Sealik Posted January 7, 2012 Report Share Posted January 7, 2012 (edited) NAPA is out anyways. He didn't come up with much. Who knew that buying a clutch would be such a "shell game". Hey Sealik, where did you get the Exedy stuff? Do you have the part #'s? I believe this is it....bought mine off Ebay though, same price. http://www.jdmhub.com/index.php?route=product/product&path=7_84_35578&product_id=99569 Rated for 255 ft lbs of torque....seems it has few different ratings, my info stated 317 But....clamping force is 2017 lbs Edited January 8, 2012 by Sealik Quote Link to comment
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