proxlamus©

I spoke with Fidanza this morning.. "Generally" most cars typically use a 6 bolt pattern versus 9. They said don't worry about it ACT says it should work fine, they do NOT test certain pressure plates with 6 out of 9 bolts but it should work. One bolt every 60 degrees on the face should be enough. If I want to think outside of the box.. I could buy a 225mm clutch/pressure plate combo that will handle lets say 500 ft lb .. that only uses 6 bolts. Now I bought a 240mm clutch/pressure plate that will handle lets say 500 ft lb... I could use 6 bolts. It would be nice to use 3 more for extra security.. Fidanza and ACT said it should be fine. I'm not running gobs of power.. so I am over thinking this too much.

By the way.. I have rotated the pressure plate on the flywheel... I know on my stock 240mm flywheel the ACT pressure plate ONLY fit ONE way. I have rotated the pressure plate around over and over again..

I know about the dowels.. I chose not to install them until the holes all lined up properly. Bo you have been running with 6 bolts installed and not all 9?? Do you have the 240mm or the 225mm clutch/pp? ahh! when I spend as much money as I have on the flywheel and pressure plate/clutch I expect everything to be top notch!! I don't want to go "half assed"

I updated the other thread.. I got the new PP in =)

Well.. as if my stretched rivets on the ACT pressure plate and now mis-drilled holes on my fidanza aluminum flywheel weren't enough.. my 1977 factory 5-speed now has a broken front cover which overlays the transmission input shaft. Basically the release bearing (throwout bearing) and the throwout collar slides back and forth on this front cover shaft... It might explain the noise I was hearing and the pulsating vibrations felt through the clutch pedal. What causes this? I don't know. How do I prevent this? I don't know. anyone have any ideas??

"The Nissan 300zx OEM Automatic Flex Plate Spacer is the spacer that goes between the Automatic transmission flex plate and the mounting bolts." Judging by the picture.. and the direction of the bolt.. and the description.. it should go.. engine > flexplate > spacer > bolt > torque converter

I sent this to Fidanza via e-mail not long ago Hello, I recently purchased a Fidanza aluminum flywheel for my 1983 Datsun/Nissan 280zx turbo. (I have a 1978 Datsun 280z with a '83 turbo motor) Part number 143281. Attached are 7 pictures comparing the stock 1970-1983 non-turbo 225mm friction surface flywheel and the stock 1981-1983 280zx turbo flywheel (also found in 2+2 cars which have a back seat) which has a 240mm friction surface on the flywheel. Picture titled "fidanza flywheel003.jpg" shows all 3 flywheels side by side. The Fidanza on the far left, the 240mm flywheel in the middle and the 225mm on the far right. Picture "fidanza flywheel002.jpg" shows the 240mm flywheel on the left and the 225mm on the right. Notice how the 240mm flywheel has 9 total bolt holes, while the 225mm only has 6 total? Picture "fidanza flywheel004.jpg" shows the 225mm pressure plate on the Fidanza aluminum flywheel. All 6 bolt holes line up properly. Picture "fidanza flywheel005.jpg" shows the 240mm pressure plate bolted to the factory 240mm flywheel. All 9 bolts line up even though the pressure plate is aftermarket. (ACT (advanced clutch technologies)) Picture "fidanza flywheel006.jpg" and "fidanza flywheel007.jpg" show the 240mm ACT pressure plate on top of the Fidanza aluminum flywheel. The outer bolt holes line up.. all except the middle bolt holes. From what I can tell... the bolt holes are drilled properly for the 225mm pressure plate (6 total bolts) while the 240mm has 6 of the 9 bolt holes drilled properly. The center bolt holes are offset improperly. Picture "fidanza flywheel001.jpg" shows the ACT 240mm pressure plate slightly over extending over the surface of the Fidanza aluminum flywheel about ~ 1/8" Overall I can determine that the Fidanza flywheel is drilled properly for any Datsun 240z/260z/280z/280zx non-turbo and non 2+2 application for the 225mm clutch and pressure plate. However; the flywheel has 3 bolt holes that are off for any Datsun 280zx turbo and 2+2 application. 6 of the 9 bolt holes line up properly which follows the 225mm bolt pattern.

As promised ACT gave me a NEW clutch disc, a NEW throwout bearing and changed the rivets on the pressure plate! whoo!

I might be mistaken.. I'm just trying to recall from my memory.. and I let my manager borrow my damn FSM.. uh oh

thanks for sharing Derek lol

from my memory .. the aluminum "flexplate" or flywheel should have a spacer behind it which allows the transmission input shaft to fit into. So it should go in the following order... Engine crank > aluminum spacer/adapter > flexplate > torque converter. The pilot bushing supports and stabilizes the input shaft from the manual transmission. do you still have that spacer?

Here ya go http://forums.hybridz.org/showthread.php?t=77962

ohh.. another performance upgrade.... "gutted cat"

I love roostmonkey's color.. ohh baby