Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: megaomega123 on 05 August 2009, 12:46:15

Title: Cat Bolts
Post by: megaomega123 on 05 August 2009, 12:46:15

Could someone tell me if the manifold end of the cat has studs or bolts? Also what size head are they?
Just want to make sure I have correct tools before starting.  ;)

Title: Re: Cat Bolts
Post by: megaomega123 on 05 August 2009, 13:12:51

Think my cats cooled enough now!! Anybody any ideas on initial question please?

Title: Re: Cat Bolts
Post by: Matchless on 05 August 2009, 13:18:42

Studs in the manifold, special nuts with helicoil thread inserts.

Use a sparkplug socket, one of the hexagonal type, dont use a bi-hex socket. iirc its 18mm AF

try to get some penetrant spray such as plusgas or rust flash into the nuts to avoid shearing the studs.

Title: Re: Cat Bolts
Post by: megaomega123 on 05 August 2009, 13:19:53

Thanks very much. I have eveything I need. Off to change  :y

Title: Re: Cat Bolts
Post by: Matchless on 05 August 2009, 13:20:27

Forgot to say... the above applies to V6. 4 pot have bolts

Title: Re: Cat Bolts
Post by: megaomega123 on 05 August 2009, 19:00:24

All sorted. The top nuts came off no trouble. The non GM cat sounds like a bag of pooh. I was advised by james but I needed it done for the weekend. I'll keep an eye out for a 2nd hand nearside cat.  :y