xEM1x
15+ Year Contributor
- 78
- 1
- Nov 9, 2003
-
York,
Pennsylvania
kristmen said:Keep the bolts straight? I cant tell if you are kidding or not. No thats not why it's used. Why do you need to keep the bolts straght? They go in straight on there own.
Its used to keep the hardend bolts from chewing up the flywheel and marking it up and distributes the bolt loading more evenly. Also keeps the bolts from denting into the soft aluminum which can cause it to come loose later down the road. Over time the heat and viberation can cause the bolts to sorta sink into the flywheel just enough to make it start to come loose. They dont do that with the steel plate there or atleast not at easy.
So now one would say ok its a good idea to use this plate. Well its 1.5mm thicker so thats another 1.5 mm less bolt you have and you only had like 8.x mm of bolt in the first place then maybe depending on the brand of flywheel you buy its upto 5mm thicker. Mine was just under 4mm thicker btw so we had like 3.9mm thicker on the flywheel and 1.5 thick on the plate and only 8.x something of bolt in the first place and now there is about half of that.
Thats just to short for comfort. Even if the flywheel is the exact same spec taking away 1.5mm can be problematic. You say well its only a thread or 2 but only a thread or 2 can affect bolt to crank torque and yeild.
Sure alot of people use stock bolts with a flywheel that is confirmed to be 4mm thicker and that 1.5 mm plate and never have issues. Then alot of people do it and have major issues. There flywheel bolts come out and it distroys the flywheel and crank.
I've seen a few people personally have this happen and I'm simply trying to avoid it.
Anyway I decided to go with ARP Toyota Supra bolts like Kevin Kiggly runs and it seems ALOT of other DSM'ers who run this flywheel and spacer run them too. They are 5.4mm longer then stock M/T bolts and rated at like 220,000 or something crazy. You can torque the HELL out of them too.
Anyway for anyone who cares here are the spec's on all the DSM flywheel and flexplate bolts.
1G M/T Bolts 12x22.5mm
1G A/T Bolts 12x17mm
2G M/T Bolts 12x21.2mm
2G A/T Bolts 12x11.7mm
Then you can get some that are 12x26mm too and those are part number MD008839.
That could be a good way to go for some people too. My local dealer can get them for $1.97 each altho others charge at much as $6 dollars a bolt.
Where did those specs come from? And is Everyone that bought a car from the factory, their flywheels are going to fall off, and trash their crank? Everyone? My fidanza flywheel is the same thickness as stock, that was your original question. As you said I am the first to have a same "spec" flywheel as stock. Im 100% sure nothing is going to be breaking off and trashing my crank. That is all. Happy Boosting.