Flywheel bolts keep backing off...

[Zazzn]

Ok guys I've had it and I'm stumped....

I've had my flywheel bolts back out 5 times now. First time I though I didn't locktite and make them tight enough. No prob second time I use plenty of red locktite, and torque them 35 and 90" as per the 2jz mk4 manual (it's a 2jz-mk3 with 1jz flywheel)

Backs off shortly after... Ok.. time for new bolts maybe the originals are streched.

New bolts same deal wtf.. Tighten again plenty of locktight reef them in there to the point that I'm scared they are stretching.... The just backed off again off again WTF....

Anyone have any suggestions? The only explication I have is that I'm bouncing the rev limit of 7500 with the AEM and making 650 WHP the constant back and forth with the rev limit is backing them out?

Any other suggestions any ideas why this could be happening?

Help I don't like doing a clutch job a week! thanks!

 

[supraguy@aol]

Good morning.
I dunno- Maybe that's the problem, but I've not heard many cases where the FW bolts do that. Is it possible that the threading in the crank is loose? Does anyone know if it'd be possible to have a shop drill some ARP's and safety wire them?

 

[ahmed]

impact them bitches. locktite and an impact always works for me. and i have done this at least 20 times usually on dsm's and mustangs without any issue.

 

[T701jz]

Aren't you missing that spacer with tabs on them so you can bend them to lock the bolts in place or from backing out? I can't remember what its call (bolt locking plate commonly use for Camshaft)..lol.

 

[T701jz]

Driftmotion sells them.

 

[IJ.]

I just clean the bolts and holes with paint thinner in a spray gun blow it out with compressed air then hit the bolts and holes with loctite primer let it set then 262 loctite torqued to factory spec, never had an issue.

 

[super.secret.supra.club]

i have set upas you do. i used arps and gasket maker. works perfect. also just tightend them using a rachet. never backed out on me.

 

[92TealSupra]

I take parts cleaner and clean the hole. Take a cue-tip and get all the gunk out. Get the compressed air blow it out to make sure. Put the Arp Flywheel bolts on, and use * red * locktite.

The Red locktite is said to make it near impossible to get those off, but a impact does the trick every time.


:hs:

 

[Orion ZyGarian]

Indeed. If red strength loctite doesnt hold them, nothing will. Supraguy is probably right; if it has happened THAT much, the problem could be the threads in the crank itself. Its really weird that it keeps happening..whatever you do, its definitely time to use safety wire or whatever the equivalent is for spinning that much.

 

[IJ.]

Be interesting drilling the ARP's for safety wires them being 12 point heads

 

[Orion ZyGarian]

A quick google shows that ARP offers it for some of their 12 point bolts. I'm sure you could get 12 point flywheel bolts from them drilled for safety tabs or wire.

 

[IJ.]

Just saying it would be an interesting exercise to do them

If they can be bought off the shelf even better!

I still stand by my install method I've NEVER had a flywheel come loose ever.

 

[T701jz]

 

[Orion ZyGarian]

Just saying it would be an interesting exercise to do them

If they can be bought off the shelf even better!

I still stand by my install method I've NEVER had a flywheel come loose ever.

I would think your best bet is to drill between two points rather than on them, as opposed to a 6 point head which goes through the middle of the flat part. Not sure if this is how its done, but again, easier to accomplish.

 

[IJ.]

The ARP's I have are flanged so you don't have a lot of room, (At least they're soft enough to drill) while it "could" be done the off the shelf ones would be the better option.

 

[ForcedTorque]

I'm renting a welding machine today to weld something onto the two rounded off ARP's that were put in with blue loctite. I've tried so many ways to get these last two bolts out, and they will not budge.

 

[Zazzn]

thanks or the answers, does that plate really work? I've never seen it? My 1jz never had the PP back off, the 2jz I had was an auto before.... I don't know about the safety wire... I always catch the flywheel as soon as it's loose because I hear it dangling at idle back and forth.

It's really really pissing me off...

so you guys do the 35FT LB then 90"?

 

[Raven97990]

If you noticed most people are saying "Just ram them in there" . Really intelligent responses.

What fasteners are you using? OEM or ARP? Because ARP bolts have their own torquing sequence different from factory. And the locking plate shown will work with OEM 6 sided bolts, but you could notch it to work with the 12 point ARP's. Tha tshould work.

 

[Zazzn]

btw is it 3sgte arp bolts that i use or the 4ag bolts for ARP's for 2jz? for a 1jz bell flywheel??

 

[becauseican]

Yup use the 3SGTE fW bolts for the 1jz/ 2jz, Thats what I use with Lock Tight. just make sure the threads are cleaned with solvent or brake kleen first.