New flywheel bolts

[girlpower92]

hey thanks for the help

[Scott_S]

94-101 ft/lbs
I see its already been answered, my bad

[-DSM2NR-]

I've read a couple of threads saying that you have to use longer bolts to fit the Fidanza flywheel so the bolts wouldn't back out. Is anyone using the stock bolts with their Fidanza? Any problems with that?

[JamiesTSI]

I use the stock bolts on my Fidanza set-up. So-far, so-good.

[-DSM2NR-]

when did you install your flywheel? Also, did you use a a/t spacer plate when you installed it?

[95-talontsi]

I used my stock bolts as well about 12000 miles on it now.

[spydur8385]

i used stock bolts also sitting at 4000 miles so far...

[-DSM2NR-]

did you guys put a a/t spacer plate on?

[95-talontsi]

nope

[-DSM2NR-]

wow, why do so many people say that their stock flywheel bolts on a fidanza loosen and raise havoc

[nightspeed87]

Originally Posted by spydur8385

i used stock bolts also sitting at 4000 miles so far...

2nd that....

[VanIsleDSM]

I'm running on stock bolts too.. just use locktite.. if it was a big deal fidanza would be recommending and selling bolts I figure..

That FP kit is crap anyway from what I've heard, the bolts are good.. but definitly don't use the stud kit or whatever it is for the pressure plate.

To be honest I didn't even know when I put my fidanza in that it was 4mm thicker.. if I would have known I may have just bought some high grade bolts from the fastener place but I really don't think it'll be a big deal..

[TALONTRAX]

All stock hardware on my 2G Act 2600 & Fidanza flywheel, & no problems at all so far

[gsx951]

Originally Posted by VanIsleDSM

I'm running on stock bolts too.. just use locktite.. if it was a big deal fidanza would be recommending and selling bolts I figure.. ..

Well, in this case, the fastener will not back out (due to the loctite) but will be of little value because it has lost some or all of it's clamping force.
http://www.boltscience.com/pages/basics2.htm

Originally Posted by VanIsleDSM

That FP kit is crap anyway from what I've heard, the bolts are good.. but definitly don't use the stud kit or whatever it is for the pressure plate.

I have found that FP kit to be a bit pricey but to work very well.

[gsx951]

Originally Posted by -DSM2NR-

wow, why do so many people say that their stock flywheel bolts on a fidanza losen and raise havoc

Ok here the deal in a nut shell:

For bolts to work, they must be preloaded. That is, the bolt must be"torqued" so that it sees an appropriate amount of stretch.
The stretch applies a clamping load on the bolted joint. Remove the preload stretch and the bolt is free to back out under vibration. Remove the preload and the bolted joint is just a bunch of parts held in location.
A bolted joint with the appropriate amount of preload stretch is actually stronger than the sum of it's parts (figure that one out).
When you bolt a Fidanza or other soft aluminum flywheel down, the flywheel surface will actually flow away from the bolt head. When this happens, you lose the preload and the flywheel becomes loose. The A/T spacer prevents this by spreading the load over a much larger area. This is a very good idea because not only does it prevent the losening issue from occuring but it also prevents the flywheel from being damaged as the bolt heads fret or wear into the surface. Fretting is very undesireable, it causes stress to be focused and will promote cracking in otherwise sturdy components.

[marcmsj]

stock bolts here too, no problems.

[-DSM2NR-]

quick question for the people that used stock bolts, did you use a a/t spacer plate?

[boosted spartan]

i resused mine..i just put a dab of blue thread-lock.

[TwoLiterLaser]

Very good explanation gsx951.

If the a/t spacer is not used the likelihood that the bolts will back out increases. A lot.

[Raph]

Stock bolts+threadloc ,no probs

[Puscifer]

Very good question of course. I'm replacing my clutch system myself and ordered Fidanza's 8lb alum. flywheel. I went to bolt it up to the crank and what started my curiousity was how far it was off the crank. So, I dug the paper that came with the flywheel and they "suggest" using the 95 flywheel bolts. Didn't specify whether it was a n/a or forced induction application though so it's something to make you wonder about.

Also, after researching and noticing a lot of people commenting about Fidanza's flywheel's being 4mm thicker is very understandable. Out of curiousity I measured mine and came up with very close to the stock measurement. Anyone figure they might've made them more stock spec? Regardless I said definite for the a/t plate. I mean, duh.. if you know what it's for you know it's gonna help. Good luck.

[gsx951]

What happened here?

[Defiant]

The bolts held nice and tight.