Culprit to annoying vibrations thru clutch pedal, gas pedal, and shifter found!!!
05-13-2004, 06:29 PM
#1
Not DAVEB the parts guy
Thread Starter
Join Date: Aug 2000
Posts: 8,555
Culprit to annoying vibrations thru clutch pedal, gas pedal, and shifter found!!!
The culprit was my WSP y-pipe. No, the y-pipe wasn't hitting the body, cross member, etc. The problem resides in the fact that WSP doesn't use the factory hanger that connects the front downpipe on the engine block near the oil pan. Without utilizing this mount/hanger, the WSP y-pipe or any aftermarket y-pipe is left to be suspended except for where the factory hanger is used by the cat converter flange. What ends up happening is the y-pipe vibrates slightly. If you have a y-pipe, you can look underneath the car while it's running and you'll see the y-pipe vibrating especially near the flex section. This vibrating caused my whole exhaust system to vibrate slightly. While driving and shifting, I could feel an annoying grainy vibration thru my clutch and gas pedal plus my shifter which I have realized was the y-pipe causing the exhaust to vibrate. The vibrations weren't horrible and couldn't be noticed by passengers, but to someone picky like me that's wants to keep VQ's ultra smoothness, this problem had annoyed me for over two years.
The fix was simple. I simply drilled a 1/2" hole in the black metal shield that connects to the factory hanger point on the engine block. Then I took large hose clamp (the kind you use on the intake pipes) and I wrapped it around the pipe and thru the drilled hole and tightened the clamp. I'm happy to report nearly the grainy vibration is gone.
Dave
The fix was simple. I simply drilled a 1/2" hole in the black metal shield that connects to the factory hanger point on the engine block. Then I took large hose clamp (the kind you use on the intake pipes) and I wrapped it around the pipe and thru the drilled hole and tightened the clamp. I'm happy to report nearly the grainy vibration is gone.
Dave
05-13-2004, 07:23 PM
#2
Originally Posted by Dave B
The culprit was my WSP y-pipe. No, the y-pipe wasn't hitting the body, cross member, etc. The problem resides in the fact that WSP doesn't use the factory hanger that connects the front downpipe on the engine block near the oil pan. Without utilizing this mount/hanger, the WSP y-pipe or any aftermarket y-pipe is left to be suspended except for where the factory hanger is used by the cat converter flange. What ends up happening is the y-pipe vibrates slightly. If you have a y-pipe, you can look underneath the car while it's running and you'll see the y-pipe vibrating especially near the flex section. This vibrating caused my whole exhaust system to vibrate slightly. While driving and shifting, I could feel an annoying grainy vibration thru my clutch and gas pedal plus my shifter which I have realized was the y-pipe causing the exhaust to vibrate. The vibrations weren't horrible and couldn't be noticed by passengers, but to someone picky like me that's wants to keep VQ's ultra smoothness, this problem had annoyed me for over two years.
The fix was simple. I simply drilled a 1/2" hole in the black metal shield that connects to the factory hanger point on the engine block. Then I took large hose clamp (the kind you use on the intake pipes) and I wrapped it around the pipe and thru the drilled hole and tightened the clamp. I'm happy to report nearly the grainy vibration is gone.
Dave
The fix was simple. I simply drilled a 1/2" hole in the black metal shield that connects to the factory hanger point on the engine block. Then I took large hose clamp (the kind you use on the intake pipes) and I wrapped it around the pipe and thru the drilled hole and tightened the clamp. I'm happy to report nearly the grainy vibration is gone.
Dave
05-13-2004, 07:34 PM
#3
Why are you posting his whole thread in the reply if you're the first person? Think about it.
I was lucky enough to have the y-pipe fitted with a custom rod that uses the stock hanger. Glad you got the problem fixed.
I was lucky enough to have the y-pipe fitted with a custom rod that uses the stock hanger. Glad you got the problem fixed.
05-14-2004, 07:49 AM
#4
Originally Posted by Big D
Why are you posting his whole thread in the reply if you're the first person? Think about it.
I was lucky enough to have the y-pipe fitted with a custom rod that uses the stock hanger. Glad you got the problem fixed.
I was lucky enough to have the y-pipe fitted with a custom rod that uses the stock hanger. Glad you got the problem fixed.
That is very interesting, Dave B. I need to try this.
Mine gets the vibration as well, but I know that it is not from the crossmember.
I have long wondered why it was suspended like it was, but too lazy to get under there and do anything about it.
I appreciate you taking the time to do this and then inform us all of what is causing it. I know that others will appreciate it as well, because there are a lot of us with WSP y-pipes.
Thanks,
05-22-2004, 08:47 AM
#10
Dave, do you mind if you take a pic of this? I want to see exactly where you made the hole in the sheet metal
Edit- OK I just finnished the "DaveB ypipe mod" I guess Ill call it that. Anyways I used a dremel and cut a slot into the black bracket and used the hose clamp. I havent turned on the car yet but Im going to in a few min.
Edit- OK I just finnished the "DaveB ypipe mod" I guess Ill call it that. Anyways I used a dremel and cut a slot into the black bracket and used the hose clamp. I havent turned on the car yet but Im going to in a few min.
05-22-2004, 03:08 PM
#14
Originally Posted by bearded
I believe this is what Dave B means...if I am wrong please let me know. I noticed when I first drove the car there was lots of squeeling from this clamp, though it subsided a lot after a few minutes.
05-22-2004, 09:38 PM
#16
cloth might catch on fire maybe? You can try a sheet of fiberglass fleece if you cant get header wrap but from the looks of your pic, it doesnt look like the clamp is tight enough so try tighten it a lot more and see if that works first.
05-23-2004, 12:07 PM
#17
Not DAVEB the parts guy
Thread Starter
Join Date: Aug 2000
Posts: 8,555
That's exactly how I fixed most of the vibration. Pretty ghetto isn't it? I have header wrap so I don't get any rattles from the clamp. Eventually I plan on having an exhaust shop just weld in a piece of metal that can bolt into the OEM location.
Dave
07-03-2004, 09:22 PM
#24
Dave I want to say thanks for your post.
I did this last week and the smoothness that my car use to have is back. I thought that the slight roughness was due to the car being older, but that was not the case. I actually ran the hose clamp under and around the bracket and then around the y-pipe. One other thing I noticed was that the last bit of my bees in the can noise is gone. I had wrapped my y-pipe and it helped a lot, but there was still a small hint of the bee noise. My car is as quiet as as my sister's stock Max now
.
I did this last week and the smoothness that my car use to have is back. I thought that the slight roughness was due to the car being older, but that was not the case. I actually ran the hose clamp under and around the bracket and then around the y-pipe. One other thing I noticed was that the last bit of my bees in the can noise is gone. I had wrapped my y-pipe and it helped a lot, but there was still a small hint of the bee noise. My car is as quiet as as my sister's stock Max now
.
07-04-2004, 07:57 AM
#25
Not DAVEB the parts guy
Thread Starter
Join Date: Aug 2000
Posts: 8,555
Originally Posted by 1996blackmax
Dave I want to say thanks for your post.
I did this last week and the smoothness that my car use to have is back. I thought that the slight roughness was due to the car being older, but that was not the case. I actually ran the hose clamp under and around the bracket and then around the y-pipe. One other thing I noticed was that the last bit of my bees in the can noise is gone. I had wrapped my y-pipe and it helped a lot, but there was still a small hint of the bee noise. My car is as quiet as as my sister's stock Max now .
I did this last week and the smoothness that my car use to have is back. I thought that the slight roughness was due to the car being older, but that was not the case. I actually ran the hose clamp under and around the bracket and then around the y-pipe. One other thing I noticed was that the last bit of my bees in the can noise is gone. I had wrapped my y-pipe and it helped a lot, but there was still a small hint of the bee noise. My car is as quiet as as my sister's stock Max now
.
07-04-2004, 12:36 PM
#28
Supporting Maxima.org Member
Join Date: Mar 2004
Posts: 207
my budget rattles when idling and in 1st at low rmp, very annoying. I think that it is comming from the support bracket on the b pipe though.
The stock cat support doesnt fit on this pipe, as far as i can tell (rusted out pretty bad).
Kudos daveB.
The stock cat support doesnt fit on this pipe, as far as i can tell (rusted out pretty bad).
Kudos daveB.
11-02-2007, 05:07 PM
#29
Bump because I think this may be the answer to my odd, hard to pin down vibration that is coming through my shifter and gas pedal. But just to be sure, I want to post a pic of my shift linkage. I think during on of my stock->B&M->stock transitions I may have not reinstalled a bracket the attaches part of the assembly to the car.
The gray stuff above all the linkage is sound/heat deadening material installed from inside the car. Is there supposed to be another bracket in there somewhere?
The gray stuff above all the linkage is sound/heat deadening material installed from inside the car. Is there supposed to be another bracket in there somewhere?
11-02-2007, 09:09 PM
#31
11-05-2007, 12:13 PM
#32
How did everybody keep the y-pipe from vibrating against the hanger? It seems like that would lead to more vibrations unless you wrapped the y-pipe.
I spoke to Dallas at WSP and he said they updated their hanger design about four years ago, likely after I purchased my y pipe. He says they can send me a new hanger/u bolt for about $10. I can't decide if I should do that, Dave B's mod, or both.
Any thoughts?
I spoke to Dallas at WSP and he said they updated their hanger design about four years ago, likely after I purchased my y pipe. He says they can send me a new hanger/u bolt for about $10. I can't decide if I should do that, Dave B's mod, or both.
Any thoughts?
11-05-2007, 10:26 PM
#33
My y-pipe was wrapped, but I used the hanger without the wrap for a while as well. No unusual noises, except for the bees in the can type noise (reason I wrapped the pipe again).
11-05-2007, 10:39 PM
#34
Supporting Maxima.org Member
iTrader: (29)
Join Date: Oct 2005
Location: Middleboro/Carver, Ma
Posts: 4,572
Topspeed ss 2-peice y-pipe FTMFW, I got it on closeout for $120 and it has a bracket attached to bolt in place of the stock one, which for us NE guys likes to rot out.
01-08-2008, 06:13 PM
#35
Well I finally got around to trying to fix my vibration that comes through my shifter, and to a lesser extent my gas pedal. Here's what we did:
So far, it didn't cure my shifter vibration, and I can't tell if it fixed my gas pedal vibration. For all the time we put into the mod, I'm a little disappointed.
At least it looks cool
Thoughts?
So far, it didn't cure my shifter vibration, and I can't tell if it fixed my gas pedal vibration. For all the time we put into the mod, I'm a little disappointed.
At least it looks cool Thoughts?
01-08-2008, 06:26 PM
#36
looks good.
I remember a thread where a member used (either or both) duck tape and zip ties on the shifter bushing (was a square like shape) then re-installed and it eliminated majority of the shifter vibration. which I still had the pics.
I remember a thread where a member used (either or both) duck tape and zip ties on the shifter bushing (was a square like shape) then re-installed and it eliminated majority of the shifter vibration. which I still had the pics.
01-08-2008, 06:38 PM
#37
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