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Header replacement nightmare

robbie

By robbie,
in General Forums

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robbie NPORA Regular

robbie

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I posted a few weeks ago about a shop saying they had to bend the ceramic coated thorley y-pipe a few feet. Turns out it was about 5 inches off the cat but still way off. Checked part number and it matches. I guess AC sent wrong y-pipe. So they did some major modifying and even put a nice crimp in the y-pipe. I didn't wanna sit there and argue with the shop so I shelled out $700 for the job.

 

The headers were hissing like crazy so I took it back and they tightened it. Still made noises like baseball card on a bicycle spoke. So this morning I tightened the nuts on the studs of the header and one broke clean off. F ck me! The studs were ordered from AC and it turns out the studs are not heat treated, which gives off a blackish color to the metal and apparently is a lot stronger than the brass colored counterpart that is holding the headers in my truck right now.

 

Well that's the update if anyone is interested.

 

I swore to myself this morning that I alone am going to work on my truck and no one else. With that said, I have a question about the nut and washers. They were oval inside the nut and I read on a thread here that those are one time use only nuts. Are these the same type of nuts that can be ordered with the 300zx turbo studs? Also can I reuse the washers that came with the AC stud nut combo deal? (The nuts and washers were blackish color, apparently treated for strength, and the studs were not.)

 

I'm about to go order the 300zx turbo studs and was wondering if I should order the nuts from the dealer.

 

Thanks.

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Precise1 NPORA Old-Timer

Precise1

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I swore to myself this morning that I alone am going to work on my truck and no one else.

 

It does have it's drawbacks, but in the long run it saves $, grief and creates peace of mind.

 

Sorry, but I don't have answers for you. There is a cheap nissan dealer who has good info that was posted several times. Lemme look...

 

B

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88pathoffroad NPORA Old-Timer

88pathoffroad

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A few people actually reccommend using Grade 5 bolts and two lockwashers instead. Lee from L&P has been using that combo for a couple of years now with no problems. The theory is that the bolts will flex/expand/contract with the heads better than the studs.

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