[James2007]

so a while ago about 2k miles ago, I installed JBA LT's what a PITA that is.... but super happy with results

after install I thought I heard a leak
one of the studs stripped out on me and I had to drill tap and heli coil....(hence the PITA install)
and I thought that was the problem either that or the B pipe connection
ive since then re torqued the header nuts

so since I was done with dealing with exhaust myself i brought it to a shop, they checked it over and over, called a few guys and could not find a leak.
I will bring it to another shop to get different guys to take a look at it

but I swear to god, I hear a slight " pap pap pap pap" at idle and while cruising around

the guys at the shop said that with headers that you hear the injector pulse a lot more, and it sounds like a leak/lifter noise sometimes

I still have stock exhaust only thing I have is JBA LT and UpRev

has anyone else had this problem? what should I be checking?

 

[robstrevor]

Headers do tend to have more noise due to the fact that the stainless steel is thinner than the common cast iron or thicker steel manifolds. My silverado had more noticeable ticking with headers. Everything was torqued and not leaking. My T seems to have the same thing. Just the ever so slight exhaust tick.

Sent from my SM-N910V using Tapatalk

 

[CVTitan05]

I have it as well with my stainless JBA LT's, you can hear a tick, almost like an exhaust leak, but im pretty sure in my case its an injector tick, which the vk56 does have inherently loud injectors. I have the same exhaust as you, im running JBA LT's with stock B-pipes and stock catback with the stock muffler. I can hear it at idle really good in the cab, to the point where friends have asked if theres something wrong with my truck haha.

My plan is once i get a newer muffler in there, i wont hear it anymore, and i wont worry.

 

[HRTKD]

If you're not throwing a code I wouldn't worry about it.

 

[LaxDfns15]

It's especially noticeable if you don't have your fender liners in. That helps to quiet it a bit.

 

[mattsmash]

I have heard the samething on mine just once when half throttle to pass for a split second. To me sounds like all the high frequency pulses trying to exit the headers from the collecter but that's what I tell myself.

 

[LUBECAKES]

Headers have a very distinct sound to them, and they are definitely thinner than manifolds. You will hear each cylinder firing as a sort of ticking sound through the metal.
If you have a leak, it will likely be loud and downright obnoxious.

For leaks, try soapy water sprayed on the connections during a cold start.

 

[James2007]

soapy water seems like a good idea to check, thanks for the idea.
glad to see im not the only one who hears the little annoying sound, and I am not crazy.

 

[Walrus]

Did you use Nissan gaskets?

 

[James2007]

Did you use Nissan gaskets?

yes 100% nissan....unless the dealership used different gaskets and put them in nissan bags......and sold them for nissan prices!!:eek_surprise:

 

[CVTitan05]

Joe at cajun could actually tell on my data log that i had exhaust leaks, we went back and forth 4 or 5 times with torquing bolts, and re-data logging, before he told me is was right. So if whoever tuned your truck didnt say anything, i wouldn't worry.

 

[avmaldo]

So what's the quietest (in terms of ticking) option besides stock?

 

[JauntyBishop]

There isnt. It's the nature of the beast. When you add 14 or 16 gauge headers the ticking of exhaust pulses, valve train noise etc will be emphasized.

Since the aluminum heads expand and shrink rapidly during heat cycles you could possibly have a small leak where you heli-coiled that one thread.

Could be unlikely but always a possibility.

Engine noise will always be more pronounced with mods.

You could be hearing injector tick and the fuel oscillating in the rails.

Could be hearing the cam lobes and buckets due to lash from the factory. Even though mass produced some things can happen and be a little off vs the next engine in line.

 

[Mr. Perseverance]

How'bout......Taking a shorty header, and instead of wielding a catalyst with a flange you weld up a resonator/bullet style muffler in it's place (with a flange)? Then have Cajun custom make a 2.5" B-Pipe that's catted along with the bottle resonator after the O2 bung. B-Pipe should be long enough to accommodate both? Then add an Ultra Quiet towards the tail pipe end post muffler. Possibly could add another Ultra Quiet pre muffler. This setup then would then have two catalyst, and five or six total resonators. Maybe this is also just throwing money at the problem? Just thinking out loud here.....

 

[avmaldo]

There isnt. It's the nature of the beast. When you add 14 or 16 gauge headers the ticking of exhaust pulses, valve train noise etc will be emphasized.

Since the aluminum heads expand and shrink rapidly during heat cycles you could possibly have a small leak where you heli-coiled that one thread.

Could be unlikely but always a possibility.

Engine noise will always be more pronounced with mods.

You could be hearing injector tick and the fuel oscillating in the rails.

Could be hearing the cam lobes and buckets due to lash from the factory. Even though mass produced some things can happen and be a little off vs the next engine in line.

Dang I've been saving up for headers but I'm not sure I want to be clacking all around town.

For aftermarket stuff: I think what you are saying is that it's the thickness and CTE difference between the header and the flange that causes the clack or tick? So if somehow you were able to get thicker tubing and shielding it would be quieter?

Also that said does anyone have a video in which you can here the extra noise? A good one would be slowly walking all the way around the truck or maybe a slow drive by?

 

[JauntyBishop]

I wouldn't worry about the noise so much, its just the mechanics of the 4 cam engine. You will be pleased with the headers installed.

And adding catalyst or resonators won't necessarily quiet down the ticking/pulsing. You're just hearing exhaust events and valvetrain noise.

If you're driving next to a wall/barricade and you hear a racket from one side then its most likely an exhaust leak, but you will also hear some raspiness and a feint card in spoke sound due to the firing order of the VK56. Depending on what muffler and B pipe combination you use, the CIS (card in spokes) sound will be either loud or near non-existent.

Some titans have noisy injectors as well, which is also the result of fuel oscillating in the fuel rails themselves. Sometimes the fuel pulsation dampers can go bad or wear out and you will hear more injector pulsation.

Also, a clicking sound has been known to be caused by the drain back valve in the oil filter, few cases of this. Engines are weird at times.


I'd say go for it, get a set of JBA 6400S or which ever they are and give it a shot. Make sure to use all OEM Nissan Gaskets for the headers to cylinder head and headers to B pipe connection.

 

[JauntyBishop]

How'bout......Taking a shorty header, and instead of wielding a catalyst with a flange you weld up a resonator/bullet style muffler in it's place (with a flange)? Then have Cajun custom make a 2.5" B-Pipe that's catted along with the bottle resonator after the O2 bung. B-Pipe should be long enough to accommodate both? Then add an Ultra Quiet towards the tail pipe end post muffler. Possibly could add another Ultra Quiet pre muffler. This setup then would then have two catalyst, and five or six total resonators. Maybe this is also just throwing money at the problem? Just thinking out loud here.....

Lots of work lol. No doubt I understand what you're saying and see the reasoning for sure.

JBA shorties are a nightmare, becuase you have to weld components on to them.

You'd have more money tied up in doing JBA shorties vs just buying the standard JBA long tubes and running Catted B pipes.

Once you start adding Resonators, cats and extra mufflers, you start adding 10lbs here and there and it adds up.

This makes more strain on the hangers and the entire exhaust system. So when things heat/expand, then flex from driving etc.. you can cause cracks at the welds or even at connections.

Food for thought :smile:

 

[James2007]

yeah its hardly noticeable when driving, but im a freak when it comes to noises from vehicles (OCD thing)
more noticeable when driving beside another vehicle or wall, but still isnt to bad, not as bad as it was when my manifolds were cracked
Joe never said anything to me about any leaks or any problem actually while doing the logging process
even if the noise stays and is all good, its worth it for the gain headers and UpRev made to my T

 

[JauntyBishop]

Roll windows up and turn music up or stay away from walls lol. Like i said its just the nature of the beast, you could always try adding some sound deadener like hushmat or secondskin

 

[nightowl]

There is a thing called header "Ping" that is what y'all are likely hearing. My Titan does the same thing and that is completely normal with headers on any make or model. It will sound different than a manifold what y'all are use to hearing. Stop the OCD crap! LOL