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#1 Joe370Z

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Posted 10 January 2019 - 05:33 pm

Im intending to replace my factory fit and rather crusty exhaust system with an Oe system from a Nismo, which is almost new, my question is how would you tackle whats left of this nut? I had thoughts about using a nut splitter. I just wondered if any of you had done this job yourselves and how you went about it.64B42A1B-7E77-417B-B65A-C6DC190C5E6B.jpeg
All 4 nuts are in a similar state.

#2 Cray Z

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Posted 10 January 2019 - 05:59 pm

Clean it up first with a wire brush on a drill, maybe tap it with a hammer first to shatter the rust, and then soak in penetrating fluid (ideally plus gas) leave for as long as possible and spray again. You can do this over a few days if you have the patience/time.

Then get the correct sized hex socket (not a multi type one) and hammer it on, then insert ratchet, ideally with some sort of pipe or extension on the end to give you leverage, and it should bust loose!



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#3 A Pair Of Flabby Wings

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Posted 10 January 2019 - 10:34 pm

I'd agree with most of that, but might add that applying quite a lot of heat to the nut (with a blowtorch or similar) can break the seal a bit as one part expands more than the other.

 

Are you keeping the part that the bolt is attached to (ie the other side of the gasket/join, which I imagine is the mid-pipe)?  If not, then I might have cut it down with an angle grinder or a saw, and then drilled out the remainder of the bolt.  That might make a bit of a mess at the other side (of the mid-pipe), but from the look of it I imagine the other end of the bolt is probably in a similar state at the other side and won't come off without a bit of damage too.


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2007 350Z (my second Zed) - When you give up driving, you’re not going to look back wistfully on the car you owned with the nicest dashboard top or speaker grilles. You’re going to remember a car for its excitement and how it made you feel.
2011 Yaris 1.33 (my third Yaris) - With an extra 30cc and an extra gear it's become the S-Class of small cars.  Far less pretentious though.


#4 Joe370Z

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Posted 11 January 2019 - 06:55 am

Yeah, I was thinking that, looks like a pressed stud to me, and it may not survive.
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#5 Kano

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Posted 11 January 2019 - 10:53 am

Had something similar on my 350z.  The stud was badly corroded, ended up drilling it out and just using a standard bolt in its place, with a good sized washer for support..  

 

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Edited by Kano, 11 January 2019 - 11:01 am.

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Peugeot 205 XS : 1995 to 2002

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Nissan 350z : 2007 to 2017

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#6 A Pair Of Flabby Wings

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Posted 11 January 2019 - 06:26 pm

Yes, that's been my experience and practice for a while.  New nuts and bolts and washers also help with a better fit on the new exhaust.


2007 350Z (my second Zed) - When you give up driving, you’re not going to look back wistfully on the car you owned with the nicest dashboard top or speaker grilles. You’re going to remember a car for its excitement and how it made you feel.
2011 Yaris 1.33 (my third Yaris) - With an extra 30cc and an extra gear it's become the S-Class of small cars.  Far less pretentious though.


#7 Joe370Z

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Posted 11 January 2019 - 10:04 pm

I do recall doing this on another car before, looks like it’s going to be necessary here too. God I hate drilling studs out!
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#8 A Pair Of Flabby Wings

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Posted 11 January 2019 - 10:23 pm

Agreed.  But when it's the quickest, easiest way to get an old exhaust off and a much better one on, then it can be massively appealling. :thumbs: :lol:


2007 350Z (my second Zed) - When you give up driving, you’re not going to look back wistfully on the car you owned with the nicest dashboard top or speaker grilles. You’re going to remember a car for its excitement and how it made you feel.
2011 Yaris 1.33 (my third Yaris) - With an extra 30cc and an extra gear it's become the S-Class of small cars.  Far less pretentious though.


#9 Joe370Z

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Posted 20 January 2019 - 05:07 pm

Just an update, all done and dusted, I did have to cut those press in studs after all, and all kudos to a guy on another Forum for suggesting using a ball joint splitter to drive out those pressed in studs, worked a treat! So I now have an OE nismo exhaust on my GT, true dual with H pipe on the Y. I didnt realise just how different a nismo y pipe is to a stock one, bigger bore and that h pipe and dual pipes, but fits like a glove!

Edited by Joe370Z, 20 January 2019 - 05:19 pm.

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