Jump to content

BORLA Touring rattle?

6.2Midnight

By 6.2Midnight
in Engines & Drivetrain

Recommended Posts

6.2Midnight Enthusiast

6.2Midnight

Posted
Posted

I have a rattle at low rpm, it seems to get quieter once the exhaust warms up. I have checked my heat shields, doesn't seem to be a issue there. The only other thing in the area from where the rattle is coming from is the "flapper" (can't remember the correct name) in the exhaust for the V8-V4 mode. Anyone else have this issue? If so, how do you fix it? I checked it, the parts seems to slightly twist freely...

ShamrockShooter Senior Enthusiast

ShamrockShooter

Posted
Posted

I have a rattle at low rpm, it seems to get quieter once the exhaust warms up. I have checked my heat shields, doesn't seem to be a issue there. The only other thing in the area from where the rattle is coming from is the "flapper" (can't remember the correct name) in the exhaust for the V8-V4 mode. Anyone else have this issue? If so, how do you fix it? I checked it, the parts seems to slightly twist freely...

So you have the gm version of the borla? Clamp it open with a bolt and two washers or a 2 inch band clamp and see if it stops the rattle. If it does stop it then call borla and have them ship you a new front pipe with the flapper.

 

Sent from my SM-G930V using Tapatalk

It's a known issue on the stock exhaust for the flapper to rattle.

 

Sent from my SM-G930V using Tapatalk

SilveradoSaver Senior Enthusiast

SilveradoSaver

Posted
Posted

I have a rattle at low rpm, it seems to get quieter once the exhaust warms up. I have checked my heat shields, doesn't seem to be a issue there. The only other thing in the area from where the rattle is coming from is the "flapper" (can't remember the correct name) in the exhaust for the V8-V4 mode. Anyone else have this issue? If so, how do you fix it? I checked it, the parts seems to slightly twist freely...

 

 

I have the non-GM Borla S-Type and had a similar issue with mine. Drove me crazy! In the end it was a loose clamp just before (or after, can't remember) the cat. Put a new one on and voila!

6.2Midnight Enthusiast

6.2Midnight

Posted
  • Author
Posted

GM corsa exhaust here no flapper no problems, just a nice sound. I think as long as your exhaust has a flapper there's chances of problems,,,,,,

 

You're one of the smart ones aren't ya? :thumbs::crackup:

 

Liketohavefun Enthusiast

Liketohavefun

Posted
Posted

Well it's a roll of the dice with these trucks and the exhaust. I wasn't much of a fan with the flapper design so when I seen this system without the flapper I said this might be worth trying and I might have not given it a try except GM say it was meeting their requirements for everything the stock exhaust did plus offering 10hp/6tq ( for the 5.3 which by the way is a real cow in my book ) which is the only one I ever found saying an increase in power but maybe that makes them feel better for the price they want to charge you lol. But if I was the smart one I would of bought the 6.2??

6.2Midnight Enthusiast

6.2Midnight

Posted
  • Author
Posted

Happy to say it was just a hanger from the exhaust just close enough to barley touch, but yet send out a signal. Cut off about a half inch, no where close enough to touch now. I did take a look at the flapper, it does make a little noise that you can hear while under the truck and near it. As long as I can't hear it while outside the truck, or inside, I'll let it go for now..., but at least I'll know what to look for and how to fix it if the time comes now. Thanks.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      In the 80's 90's I'd run Honda's 7,500 miles between changes using Red Line HP 5W20 and do it for hundreds of thousands of miles with issues. Back in the day it was an SAE 20 with the HTHS of a SAE 30 and SN add load. It was also very polar. Oxidation VOA was over 120. Besides those motors were SPFI and lean burn tech. I could have likely run it longer but never did.    We had a Toyota bought new I ran on Pennzoil's latest and greatest synthetic of the day with "Penthane". A made up word for a very low dose of PAO. Tried 7,500 mile OCI's in that Group III/VI chemistry and the rings tapped out at 90K. Rocker box wasn't as bad as the one Punch put up but it wasn't good either. Also a SPFI motor.    I'm around 3,750 across the board on these GDI monsters and the oil it tapped out by then usually on TBN/TAN crossover and color. Red Line HP Euro.    The AMSOIL SS brochures tell you to follow the OEM values for the service class but that it can be run up to 25K if monitored. I can't imagine what motor could go that distance and not tap out. I've never owned one.    Yes, I know. Lot's of people do. I'm just not going to be one of them. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      I knew a guy in the early 80's that bought a new Monte Carlo and ran it a 100,000 miles without ever changing the filter or the oil. Just kept adding. It looked like that inside.     
    • whenindoubtuseahammer
      My First Project and GMC has me stumped

      By whenindoubtuseahammer · Posted

      Good evening. I was lucky enough to get passed down to me a 2007 GMC LBZ that was my great uncle's. While the underside and rockers are more or less gone I feel like with time I can restore it to working order since it only has 110,000 miles and he put nearly every option he could get without getting the new body style since he did not trust DEF. So far I have done everything I can think of but when I put the key into the ignition nothing happens. I put 2 brand new batteries in it. Cleaned the terminals. Check all the fuses and relays and they all pass with my multimeter. I know I'm missing something that I just cant think of. The only odd thing is the OBD2 port works which makes me think its not the mega fuse. Any advice would be greatly appreciated. 
    • PunchT37
      Casey from the Texas Hill Country

      By PunchT37 · Posted

      Looks nice. I still have my 2000, 1500. Bought a 2025, 1500 for retirement. Feels solid. These trucks have a bad rap on the internet. My brother has a `24 1500, 5.3 with 52,000 miles. No problems at all. Mine hasn`t either but mine`s only at 12,700 miles. Have seen some of these things with 100,000 miles with no problems.
    • Fish_truck
      Casey from the Texas Hill Country

      By Fish_truck · Posted

      Howdy! New to the forum of course! My name is Casey, just picked up a 2024 high country midnight edition. First “new” truck in 24 years for me. Driving a 1998 Z71 since 2002. Have been on the GMT400 forum with lots of good info and help there. Nervous about driving these newer trucks and all their electronics…. Did a lot of work on the Z71 myself over the years. New truck is definitely a nice upgrade after 24 years. Photo of the old and new, still keeping the Z71 - has 320,000 miles on her and still running well!  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...