Need an Exhaust Flange for M56.

[misfit77]

Anyone know a good source for Metric or Japanese flanges?
I have googled a lot.


Went to two popular exhaust shops in Tucson to get a new Y-pipe installed.
Both shops said "we get these all the time"

I went with one that could schedule me in sooner. I asked him to take a look and thats when his confidence annoyed me. I asked him if he was sure he has seen a M56. He very confidentially said yes.

Fast forward two weeks. I basically left empty handed. The flange coming right off the front cats is about 2.5" with a bolt spacing about 4.75. This is not an easy thing to find.
I tried the scrap yard for a flange no luck, either too small or taken plus not too many 5.6 nissans in the yard.

I was able to modify a Walker 41726 https://www.amazon.com/Walker-41726-Exh ... B0015KZL26 to make this.




Its almost perfect, but its not stainless steel, only .3" thick and it could use a little more real estate on the cat converter. I am going to get bigger flange nuts.


2 more options but not sure if they are any better, no mention of stainless steel.
The JDM Collector for Civics. Will require some trimming, it already has the O2 bung so time saved.
https://www.ebay.com/itm/224520390418?m ... media=COPY

FX12 2-5/8" Flange
https://www.ebay.com/itm/185314363930?m ... media=COPY


God knows where I am going to find gaskets.

[conaigh]

Your photos aren't showing, but I wouldn't mind trying to help as I work for an Infiniti dealer.

Without seeing how you modded the Amazon part, would something like this - https://www.aceraceparts.com/products/s ... 6641176452 work?

Compatible gasket - https://www.aceraceparts.com/products/2 ... 6641179140

[misfit77]

Sorry forgot to share the album.

My problem is the bolt spacing. I took the modified Walker part to my exhaust guy and he said they would work.
He only has these thick Graphite gaskets. The extra 1/4" thickeness might interfere with the support brackets.
I am hoping to find gaskets or be prepared to fabricate my own brackets.

[EdBwoy]

Sorry for the frustration, and I wish you the best in your search.

If all else fails, there's the option to have them made by a machine shop. Since you already have the dimensions, and it's a fairly straightforward cut, a capable shop could have them water jet cut for a relatively cheap price.