Warning: Check the bolts on the flywheel

[pdxmille]

I wouldn't replace the stator unless it needs it. I've never heard of much trouble with them pre 04.

I don't know what grade 10 stainless bolts are. Most commonly available stainless is A1 or A2 and I would not use them for this application. The original screws in the 03 engine I have apart are 12.9 which is a high strength alloy steel and I would not replace them with any thing less.

cool, I will check the hardware store, i THINK they have grade 12.9..if they do, I will replace them, if they dont, I'll just reuse them...which locktite do i need for this project? you rule kz

[Cryogenic]

Loctite 648

[pdxmille]

Loctite 648

yeah, i saw that after re-reading the beginning of the thread...DOH!!

[pdxmille]

alrighty, just ordered the loctite 648...$19 shipped for 10ml? seems to be the best price i could find....

[Mike Moriarty]

I went to replace my stator and found it looks just like the one in the first pic

I have already purchased a stator from Ricks , and a new sprag and housing...

The flywheel doesn't appear to be available individually. How stupid would it be to clean it up and re-use it? It has some gouges...

[kzmille]

If it is just beat up a little but structurally sound clean it up and go.

Post a picture if you can.

[Mike Moriarty]

will do KZ !! need to get it off first

[Mike Moriarty]

Here is a pic of the flywheel. I tried to show the worst of the damage.




Here is another, different angle.

[kzmille]

It's hard to tell from pictures. It's just a judgement call you will have to make. Clean all the damaged areas and inspect closely. Make sure there are no cracks in the outer housing.

[BrummyMax]

I have a perfect flywheel sat right here ...... its for sale too! I have even cleaned it!

[TRexRacing]

How noisy was that? That oughta show up in the oil at change time as well.

[Mike Moriarty]

The rotor is a magnet, so it held most of the flakes...it did sound like rocks in a coffee can though, I was thinking it was the sprag.

[Gabro]

The original screws in the 03 engine I have apart are 12.9 which is a high strength alloy steel

12.9 bolts were introduced in late 2000, together with loctite on 'em, after some bolts losening and consequential stator faliure. No more trouble since on production motors
8.8 bolts are enought as far as you tight fine and use good loctite

use a good thread locker on those bolts and doublecheck the tightening while doing yourself the spragclutch replacement

I have some lightened flyweels to sell (on the right the newer motor "pizza" weight lightene as weel):
(i have spare used stators too if you still need... i've to check for 3 12.9 bolts)

[zilog]

Gabro, how much weight did that shave off? You know how much margin there is untll failure from overrev?

Just asking since I now became interested in using the mill and lathe myself this winter..

My engine is a stock 2002 model

[Gabro]

that flyweel is machined 1.8mm down, up to 2.0mm is safe
wheight saving is about 0.2kg