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-   -   Well Crap. Engine Banging Noise (http://forums.pelicanparts.com/porsche-911-technical-forum/741370-well-crap-engine-banging-noise.html)

Lapkritis 03-27-2013 06:58 PM

(Double post)

pete3799 03-27-2013 07:47 PM

I'd be happy to lend an ear.
Shoot me a PM.

whiz05403 03-27-2013 10:15 PM

Pete is the man!!

DRACO A5OG 03-28-2013 01:06 AM

"... when accelerating"

+1 cv joint.

sorry to read about your wife Andrew.

Jim

Jerome74911S 03-28-2013 09:21 AM

As for your original question, check the Green Mountain Region of PCA. The website is gmtpca.org.

On the website, click the "About GMT" button. There you will find a list of officers in the club. Call the president (he will twist your arm to join the club, but ignore that if you want) and ask him about good Porsche techs in VT. He should give you a list of options.

If that doesn't work, PM me - I belong to GMT.

szyzygy 03-29-2013 09:27 AM

Quote:

Originally Posted by Lapkritis (Post 7354587)
Montpelier area is tough. There are not any reputable Porsche shops anywhere in the area. If you head to Burlington you have a few options of course... if it is anything internal that requires engine breakdown you're going to get really expensive really fast. Does the noise exist with the engine running, car sitting still? Like the others have said, lots of things make noise and not just the engine. Could be something simple/free even.

No, the sound is gone when it's just idling. Started her up last night

szyzygy 03-29-2013 09:28 AM

Quote:

Originally Posted by Jerome74911S (Post 7355583)
As for your original question, check the Green Mountain Region of PCA. The website is gmtpca.org.

On the website, click the "About GMT" button. There you will find a list of officers in the club. Call the president (he will twist your arm to join the club, but ignore that if you want) and ask him about good Porsche techs in VT. He should give you a list of options.

If that doesn't work, PM me - I belong to GMT.

thanks, good idea.

I'm already a member. I had the orange coast region transfer me over here

szyzygy 03-29-2013 09:34 AM

Thanks for your help guys
Here's some vids I took of the CV joint areas. The last vid shows there is some rubber hose ripped apart under my car. What is that? Also, are those the sway bar bushings that look all crumbled? Whatever they are looks like they could be replaced.

I jacked up my car, one side at a time, and rotated the wheels. The drivers side (which I called Right in the video description) sounded a little rough when I first started turn it, but in the vid you can't really hear anything. The noise for the first 14 seconds is just me getting the shop light situated. The passenger side also sounded pretty normal.
I squeezed the rubber boot to see if I could feel anything, but I really don't know what anything is supposed to feel or look like.

Do I have to remove the wheel to check them?
Should I try to push the wheel up and down to see if the vertical jostling makes any noise?

I'll keep searching on here, thanks in advance.


Drivers side
VID_20130328_213420_196 - YouTube
Passenger
VID_20130328_214020_944 - YouTube
Sway bar bushings and loose rubber hose
VID_20130328_214437_841 - YouTube

Lapkritis 03-29-2013 09:57 AM

Check the inboard CV joints (connect to transmission) in the same manner. The sway bar mount appears torn from the body in the last video. That would clunk about over uneven road surface.

KTL 03-29-2013 10:02 AM

Might have a bad outer CV joint on the right side. I can see the rubber boot on the engine side of the axle shaft has moved on the shaft. You can see a clean/shiny area of the shaft.

Your sway bar mount is broken on the right side. You can see the rear of it hanging down 3 seconds into the last video. That will cause some banging for sure.

Also, that floppy boot at the end of the last video is a boot that keeps the elements out of the center tunnel of the car. Reason its there is to cover the connection between the trans shift rod and the shifter coupler. Go inside the car and lift up the carpet on top of the tunnel just in front of the rear seats. You'll see an inspection cover with four screws. Remove those screws and you'll see exactly what's going on in there with the boot. Outer boot is cheap- $14.50. Inner boot is $33. Dunno why the inner boot is needed if you have the outer boot.

Porsche 911 & Carrera Shift Linkage - Page 1

Scott R 03-29-2013 10:11 AM

+1 Sway bar is broken off, happens a lot. Also the drop link is bent as well. Order new mounts, links and rubber and weld it back together.

jmh61 03-29-2013 10:14 AM

Your vids show the CV joints at the wheels. They look OK to me. you need to check the CVs at the other end of the halfshafts, next to the transmission. Make sure the boots aren't torn and all the bolts are tight to the transmission output flanges.

I think what you called the deteriorated rubber hose is actually the rubber boot for the transmission shift rod. Don't know if it ba replaced with the engine in the car.

Your sway bar rubber is shot and should be replaced. It appears the sway bar clip on the passenger side is unbolted. I would try and rebolt it to see if the mount is OK.

Good Luck

szyzygy 03-29-2013 10:19 AM

Quote:

Originally Posted by Lapkritis (Post 7357559)
Check the inboard CV joints (connect to transmission) in the same manner. The sway bar mount appears torn from the body in the last video. That would clunk about over uneven road surface.

Yeah, I've suspected that for awhile. Going over bumps is not fun.

I've only just recently gotten a place with a garage, so a lot of these little things I've learned on here will hopefully get done soon.

I'm a little nervous on welding though. Seems expensive and like you need to have some practice under your belt. I like learning new things but that job might be a little out of my skill level.

szyzygy 03-29-2013 10:20 AM

Quote:

Originally Posted by jmh61 (Post 7357594)
Your vids show the CV joints at the wheels. They look OK to me. you need to check the CVs at the other end of the halfshafts, next to the transmission. Make sure the boots aren't torn and all the bolts are tight to the transmission output flanges.

I think what you called the deteriorated rubber hose is actually the rubber boot for the transmission shift rod. Don't know if it ba replaced with the engine in the car.

Your sway bar rubber is shot and should be replaced. It appears the sway bar clip on the passenger side is unbolted. I would try and rebolt it to see if the mount is OK.

Good Luck

Thanks

Those inner CV joints are hard to get to - do I take the wheel off?
Do I just squeeze them? What am I feeling for? Or is it just if they make noise?

szyzygy 03-29-2013 10:23 AM

Quote:

Originally Posted by rennworks (Post 7354610)
If you have a loud popping noise on accel, could be pulled or broken headstuds.

Quote:

Originally Posted by samourai71 (Post 7354634)
How about a used (grinded) piston head?


Sent from my iPad using Tapatalk HD

I started her up last night and revved her up in neutral. No noise.

szyzygy 03-29-2013 10:30 AM

Quote:

Originally Posted by KTL (Post 7357564)
Might have a bad outer CV joint on the right side. I can see the rubber boot on the engine side of the axle shaft has moved on the shaft. You can see a clean/shiny area of the shaft.

Your sway bar mount is broken on the right side. You can see the rear of it hanging down 3 seconds into the last video. That will cause some banging for sure.

Also, that floppy boot at the end of the last video is a boot that keeps the elements out of the center tunnel of the car. Reason its there is to cover the connection between the trans shift rod and the shifter coupler. Go inside the car and lift up the carpet on top of the tunnel just in front of the rear seats. You'll see an inspection cover with four screws. Remove those screws and you'll see exactly what's going on in there with the boot. Outer boot is cheap- $14.50. Inner boot is $33. Dunno why the inner boot is needed if you have the outer boot.

Porsche 911 & Carrera Shift Linkage - Page 1

Thanks, I'l check that out. I am familiar with that trap door - I replaced the coupler a year or so ago with one from IvanGene (the couplerwhisperer) on here.

spuggy 03-29-2013 10:41 AM

Quote:

Originally Posted by szyzygy (Post 7357606)
Thanks

Those inner CV joints are hard to get to - do I take the wheel off?
Do I just squeeze them? What am I feeling for? Or is it just if they make noise?

My money's on your ARB being the noise. But here's how I check CV joints http://forums.pelicanparts.com/porsche-911-technical-forum/727195-calling-all-half-shaft-cv-joint-experts.html#post7190762

Check with the axles loaded - e.g. car on it's wheels. Because if you put the car on axle stands, the wheels and axles can droop into the "unworn" portion of the bearing and test good when they're really not...

Any detectable side-to-side/up and down play in the CVs == fail. Any noticeable "graunching" or grittiness in the CV == fail. Any wear/chips/pitting on the hardened surfaces, skidding/overheated balls == fail.

Axle moving back and forth between the CVs - that's fine, it needs to be able to do that :)

szyzygy 03-29-2013 10:49 AM

Quote:

Originally Posted by spuggy (Post 7357648)
My money's on your ARB being the noise. But here's how I check CV joints http://forums.pelicanparts.com/porsche-911-technical-forum/727195-calling-all-half-shaft-cv-joint-experts.html#post7190762

Check with the axles loaded - e.g. car on it's wheels. Because if you put the car on axle stands, the wheels and axles can droop into the "unworn" portion of the bearing and test good when they're really not...

Any detectable side-to-side/up and down play in the CVs == fail. Any noticeable "graunching" or grittiness in the CV == fail. Any wear/chips/pitting on the hardened surfaces, skidding/overheated balls == fail.

Axle moving back and forth between the CVs - that's fine, it needs to be able to do that :)

awesome, thank you.

szyzygy 03-29-2013 10:51 AM

I'm also kinda wondering if its the ebrake.

I know from DRACO on here that you should have a certain number of clicks (6?) but mine has like 11 clicks. It also doesn't hold very well. I've been meaning to get to it, but as mentioned, I've only just recently gotten a place with a garage and received my tools from storage

javadog 03-29-2013 11:25 AM

Quote:

Originally Posted by szyzygy (Post 7357663)
I know from DRACO on here that you should have a certain number of clicks (6?)

5

Quote:

Originally Posted by szyzygy (Post 7357663)
mine has like 11 clicks. It also doesn't hold very well.

Those two things are directly related...

JR


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