Removing exhaust cat bolts - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

RalliartRsX · 06-10-2006, 02:18 PM

Well, I was in the process on installing my exhaust, and, as expeted, there is a hangup. The bolts which bolt the midpipe of the new catback to the cat seem to have been welded together. I kinda realized this and tried drenching it in wd-40 for about 4 days prior to working on it. Also, the bolt itself seems to have no threads as from heating and cooling, it seems to have warped the metal to the point of looking almost molten and rusted.

I already almost rounded one of the nuts with my impact wrench and the other is in too of an awkward position to use the impact. My next step of process is to just take it to midas or a muffler shop locally and just have em cut it off and drive back with only the cat. But, before I go ahead and do that, I wanted to see if you guys had any more ideas before this is all done.

Thanks.

NIK90s13 · 06-10-2006, 07:18 PM

If you don't have a porch you can use, take it to a shop, they shouldn't charge much, I don't know what they charge in Jamaica. But That would be easyest. Where in Jamiaca are you?

RalliartRsX · 06-10-2006, 08:26 PM

I am currently in the US right now. Was in JA for a while.

Actually, what I might just end up doing is taking it to a shop. Maybe easier. I will check prices monday morning. Thanks

NIK90s13 · 06-10-2006, 08:45 PM

Yea to cut a couple of bolts and yank the exaust out, they shouldn't charge much.

*radhaz* · 06-10-2006, 09:04 PM

I imagine if you had one at your disposal you would have already used it but I ended up using a torch to heat my exhaust bolts to the point where they would break free. I had the same problem where they were virtually welded together, but after heating the nuts up to the point they were glowing I was able to take them off with very little resistance.

neilsan · 06-10-2006, 09:17 PM

i drilled out the hardware and sawzalled the gasket out from in between the flanges.

RalliartRsX · 06-11-2006, 01:11 AM

I might end up using that torch idea as I happen to have one handy

. I suppose its better to just go ahead and get a new cat too as well, but I ohh so wanted to bolt her up this weekend, grrrr!!!

We will see.

Thanks for all the help folks!!

06-10-2006, 02:18 PM	#1
RalliartRsX Post Whore! Join Date: Apr 2006 Location: Maryland Posts: 4,793 Trader Rating: (32) Feedback Score: 32 reviews	Removing exhaust cat bolts Well, I was in the process on installing my exhaust, and, as expeted, there is a hangup. The bolts which bolt the midpipe of the new catback to the cat seem to have been welded together. I kinda realized this and tried drenching it in wd-40 for about 4 days prior to working on it. Also, the bolt itself seems to have no threads as from heating and cooling, it seems to have warped the metal to the point of looking almost molten and rusted. I already almost rounded one of the nuts with my impact wrench and the other is in too of an awkward position to use the impact. My next step of process is to just take it to midas or a muffler shop locally and just have em cut it off and drive back with only the cat. But, before I go ahead and do that, I wanted to see if you guys had any more ideas before this is all done. Thanks.

06-10-2006, 09:04 PM	#5
radhaz Premium Member Join Date: Apr 2003 Location: SD SoCal / Jax, Fl Posts: 659 Trader Rating: (0) Feedback Score: 0 reviews	I imagine if you had one at your disposal you would have already used it but I ended up using a torch to heat my exhaust bolts to the point where they would break free. I had the same problem where they were virtually welded together, but after heating the nuts up to the point they were glowing I was able to take them off with very little resistance. __________________ Need a 96 driver side window switch. Feel free to pm me with a price

06-10-2006, 07:18 PM	#2
NIK90s13 Zilvia Junkie Join Date: Jan 2006 Location: texas Age: 58 Posts: 471 Trader Rating: (0) Feedback Score: 0 reviews	If you don't have a porch you can use, take it to a shop, they shouldn't charge much, I don't know what they charge in Jamaica. But That would be easyest. Where in Jamiaca are you?

06-10-2006, 08:26 PM	#3
RalliartRsX Post Whore! Join Date: Apr 2006 Location: Maryland Posts: 4,793 Trader Rating: (32) Feedback Score: 32 reviews	I am currently in the US right now. Was in JA for a while. Actually, what I might just end up doing is taking it to a shop. Maybe easier. I will check prices monday morning. Thanks

06-10-2006, 08:45 PM	#4
NIK90s13 Zilvia Junkie Join Date: Jan 2006 Location: texas Age: 58 Posts: 471 Trader Rating: (0) Feedback Score: 0 reviews	Yea to cut a couple of bolts and yank the exaust out, they shouldn't charge much.

06-10-2006, 09:17 PM	#6
neilsan Zilvia Junkie Join Date: Sep 2004 Location: east coast Age: 44 Posts: 333 Trader Rating: (0) Feedback Score: 0 reviews	i drilled out the hardware and sawzalled the gasket out from in between the flanges.

06-11-2006, 01:11 AM	#7
RalliartRsX Post Whore! Join Date: Apr 2006 Location: Maryland Posts: 4,793 Trader Rating: (32) Feedback Score: 32 reviews	I might end up using that torch idea as I happen to have one handy . I suppose its better to just go ahead and get a new cat too as well, but I ohh so wanted to bolt her up this weekend, grrrr!!! We will see. Thanks for all the help folks!!