Main bearing bolts - lock tabs
Turbo Mini Forums

Hi all,
I have a pre a-plus 998 that uses lock tabs on the main bearing bolts. Will the main bolts be ok without the lock tabs - will they stay tight and not come loose? Is it worth using some hardened ARP washers with them?

I have tried to get hold of the later A plus type of bolt, but they are NLA - only other option is ARP, but these are pretty expensive!

Thanks

Edit bad spelling

Edited by minivan63 on 20th Aug, 2012.

I have never used lock tabs on main bearing or big ends - they slack off in use.

Use Loctite and the right torque and they will be fine. I dont always use the Loctite either.

imo, if its anything mildly performance based and good old stock parts are not available arp's are worth the money
i have never seen locktabs used but ive only have A+ engines

Yes i moved to the darkside

Instagram @jdm_brett

I have A series engine my 998 never had Lock tabs on the main bearings but did on the big ends Lockite would work well but Personal Ill go for the ARP stud and nut convertion much better What ill use for big ends then Use CAT bolts for the Main bearings with hardend washers I'm kinda over killing my build abit

Ok thanks.
I have ARP's for the rods, as I managed to get some cheap(er) from someone who ordered the wrong ones, so that is sorted.

I don't know if the ARP stud kit is overkill for the mains or not and the kit is about £100