!! Stripped Cat Bolt !!

'10Anamoly · 08-27-2011, 06:40 AM

Yeah I think two per cat are bolts and one is a stud threaded into the hole on the header. Therefore, you just leave the stud there, remove the bolt and then re-use the bolt when bolting the new piece up.

The top of the stud (engine side) I believe has a star fitting so you can unscrew it though.

SPOHN · 08-27-2011, 07:37 AM

Yea I just replaced it all with the supplied bolts being there SS.

CHZ · 09-26-2011, 08:57 AM

My mechanic broke 1 bolt on each side, is it possible to remove the remain broken bolt?

CBRich · 09-26-2011, 10:43 AM

Best bet may be to drill it out.

arnoldas · 12-14-2012, 06:12 PM

did mine today, no problem till the top bolts, one broke the other striped, so ended up blow tourching it to break it off/ cuting it, kinda burnt the transmition oil metal line insulation does anyone know if i should change my trani oil because i heated the metal line up or is it not gona be a problem?

Zbrah · 08-17-2015, 07:16 PM

Bump this up! Where can I find replacement for these two demon bolts? Anyone has the size or product number?

And can I reused the other oem bolts off the cats for the art pipes? Got my test pipes 2nd hand and I don't think it came with any hardware

Elmo370z · 08-17-2015, 11:54 PM

I used sprayed some pb blast let soak over night and all the bolts came out

RickyRozay · 08-19-2015, 02:33 PM

From reading this if I can break the bolt head off I can get the cat off? If so, how? I snapped one of awhile ago and dstripped the other, decided to leave the oem cats on but if I'm able to just dremel the heads off to get them off I'll try again.

08-27-2011, 06:40 AM	#1 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 17	Yeah I think two per cat are bolts and one is a stud threaded into the hole on the header. Therefore, you just leave the stud there, remove the bolt and then re-use the bolt when bolting the new piece up. The top of the stud (engine side) I believe has a star fitting so you can unscrew it though. __________________ 2013 Ford Mustang GT 374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd

08-27-2011, 07:37 AM	#2 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 46 Posts: 14,844 Drives: Waiting on next Z Rep Power: 222	Yea I just replaced it all with the supplied bolts being there SS. __________________

08-17-2015, 07:16 PM	#6 (permalink)
Zbrah A True Z Fanatic Join Date: May 2013 Location: The370Z.com Posts: 4,956 Drives: 370Z Rep Power: 5453	Bump this up! Where can I find replacement for these two demon bolts? Anyone has the size or product number? And can I reused the other oem bolts off the cats for the art pipes? Got my test pipes 2nd hand and I don't think it came with any hardware __________________

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09-26-2011, 08:57 AM	#3 (permalink)
CHZ Base Member Join Date: Oct 2009 Location: Melbourne Posts: 68 Drives: 370Z Rep Power: 16	My mechanic broke 1 bolt on each side, is it possible to remove the remain broken bolt?

09-26-2011, 10:43 AM	#4 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 545	Best bet may be to drill it out.

12-14-2012, 06:12 PM	#5 (permalink)
arnoldas Base Member Join Date: Aug 2012 Location: new york Posts: 197 Drives: 09 Nissan 370Z M6 Rep Power: 13	did mine today, no problem till the top bolts, one broke the other striped, so ended up blow tourching it to break it off/ cuting it, kinda burnt the transmition oil metal line insulation does anyone know if i should change my trani oil because i heated the metal line up or is it not gona be a problem?

08-17-2015, 11:54 PM	#7 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,727 Drives: 09 nissan 370z Sp M6 Rep Power: 295379	I used sprayed some pb blast let soak over night and all the bolts came out

08-19-2015, 02:33 PM	#8 (permalink)
RickyRozay Base Member Join Date: Jun 2014 Location: San Antonio, TX Posts: 68 Drives: 2011 Nissan 370Z Rep Power: 12	From reading this if I can break the bolt head off I can get the cat off? If so, how? I snapped one of awhile ago and dstripped the other, decided to leave the oem cats on but if I'm able to just dremel the heads off to get them off I'll try again.