So I picked up the next to last part of my exhaust and I have done everything in the world to stop it from leaking at the flanges, seals for about a few days then, poof, back leaking again. Has anyone had beter luck with differrent gaskets, seals, gasket maker etc? I'm about to lose it and f***ing weld this pipe together , anyway thanks in adavnce.

- points to note,

2004 sedan g35 6mt

M2 HR Y pipe (3"in ---> nismo)

nismo ext. (3" ---> 350 middy 2.5")

350z middy

HKS Exhaust...





...beastmode...when it not leaking

- Tori

Ooo... I hate exhaust extenders. If it was me, I'd remove the extender and have a muffler shop cut the flange and extend the pipe. It that where it's blowing out?

On a related note, it's refreshing to see such good manners in a thread topic title.

hmmmmmmmm, yeah that might be an idea, kind of iffy tho, I don't know where the car will be at in the next few years, I might want to sell the part later on if I move to back to stock etc...I was kind hoping that someone knew of a good sealent that may work. Cutting may have to be my last resource.

and thank you, I try to be very nice when requesting help.

yeah im not going to lie bro, hes probably right it may be the extension. Have the shop do a custom pipe to make it work

Thanks for the help guys, looks like ill be setting an appointment. Yeah, it leaks at both ends of the extention Still if i have them make one, is ultra copper RTV to use on the flange from the Y to the middy?

Thanks

im not too sure to be honest. If you're interested in selling the extension though lemme know

Did you get new OEM gaskets?

I agree with the others though. Just get a custom pipe put on and then no more problems!

I've used High temp Rtv with gaskets to seal up leaky connections like that.

I usually install,and then let it sit overnight before starting it up and testing it out

...80 bucks for a flange and a weld around here O.O !!! F-that, following a suggestion, I'm going to pick up some new nismo gaskets and coat em in ultra copper, if that doesn't work, then I will pull the trigger on the weld. Thank you every one for all you imput, i do appreciate it.

***over 8 months to get a middy and cant keep it sealed ***

yeah, new gaskets not nismo tho, had different ones but new and the same size.

your not using the cheap paper gaskets are you?

you should try OEM nissan metal gaskets

You are suffering from all the symptoms of warped flanges. Check those puppies with a straightedge before reassembly, and tighten the bolts a little bit at a time all the way around (not full torque on the first, then full torque on the second, etc).

On the original seals did you sand out any left scraps that were left from the previous seals? When I got my shipment exhaust the old seals were stuck so Jairen and I sanded them down. I don't think mine leaks lol

Wow leaking exhausts? That doesn't sound too fun...