TimZ Posted December 12, 2000 Share Posted December 12, 2000 Okay - I have a problem/question... I am currently using a Tilton aluminum flywheel. I have heard of people having problems with this type of flywheel where the flywheel bolts deform the aluminum, and subsequently make it difficult to keep the flywheel fastened securely. As a preventative measure, I have been using an auto trans flexplate adapter as a giant washer to prevent this from happening. It works great for this purpose, but the added thickness of the flexplate adapter leaves me with only about 0.5" of thread penetration into the crank. This makes me a bit nervous, since the bolts are 12mm, so I only have about 1.1 times the bolt diameter of penetration (the rule of thumb is 1.5 or greater). The stock bolts are 12mmx1.25 thread pitch, and are ~27mm in length. I checked with ARP, and they do not have anything longer, although they said that they could make me some if I paid the tooling costs, which would probably work out to something like $50-100/bolt (really). Does anybody have any ideas? Are there any other stock datsun (or other) flywheel bolts that are longer? I could mill the flexplate adapter, but that would probably only get me to about 1.3 or so... Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted December 12, 2000 Share Posted December 12, 2000 I have a tilton(nee NisMo) flywheel and observe a 7500 redline and haven't had any problems with about 20-22k miles on it. I know tons of people with aluminum flywheels on their 300ZX with no problems, and they make loads more power..... Perhaps you could find some suitable studs and nuts to use? I would imagine that there isn't enough room for studs and nuts though. ------------------ Morgan http://z31.com/~morgan/s30 http://carfiche.com Quote Link to comment Share on other sites More sharing options...
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