Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 964 & 993 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Bubbling well's Avatar
 
Join Date: Nov 2008
Location: Oakland, CA
Posts: 157
Garage
Q: Orientation for installing Engine Sound Pad

I got a new sound pad today and will install it in the engine compartment. The engine is out for clutch job. It is called Ultimate sound pad which has an aluminum foil layer on one side. Here is my silly question. Is the aluminum side supposed to face the firewall or motor when installed? I have checked previous threads but I see both versions. It makes sense to me if black form side faces the motor to enhance more sound absorption.

Thanks,

BW

Last edited by Bubbling well; 02-27-2011 at 08:40 AM..
Old 02-26-2011, 09:21 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Sep 2010
Location: Chicago
Posts: 75
Garage
I just installed mine last week...I actually put the foil out to engine to reflect heat and "bounce" noise...not sure if its right...but it sure looks pretty 8-p...Kind-of remindes me of the McClearn F1 with the gold plated heat reflectors in the engine bay ;-)

I'd be really interested to know If I got this right...
Old 03-12-2011, 08:06 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Now in 993 land ...
 
aigel's Avatar
 
Join Date: Mar 2003
Location: L.A.-> SF Bay Area
Posts: 13,674
Garage
The only pad they sell at pelican is shown with shiny side up. That's the only way that make sense. There is a lot of infrared radiation coming off an engine and it is effectively reflected by a mirror / silver surface. It makes no sense to have that mirror surface towards your passenger compartment as it does nothing when heat is transferred by conduction through the pad material.

I am in the same boat right now. The pad is sagging and I am torn between installing an aluminum strip holding it up at the edges or ripping it out either to keep it blank or installing a brand new pad.

Right now I am leaning towards the aluminum strip. Least amount of effort and clean result.

Anyone have any input on how much louder and warmer it gets without a sound pad? I had none on my SC and it was just fine.

G
__________________
97 993
81 SC (sold)
Old 03-12-2011, 09:48 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Bubbling well's Avatar
 
Join Date: Nov 2008
Location: Oakland, CA
Posts: 157
Garage
Quote:
Originally Posted by aigel View Post
The only pad they sell at pelican is shown with shiny side up. That's the only way that make sense. There is a lot of infrared radiation coming off an engine and it is effectively reflected by a mirror / silver surface. It makes no sense to have that mirror surface towards your passenger compartment as it does nothing when heat is transferred by conduction through the pad material.

I am in the same boat right now. The pad is sagging and I am torn between installing an aluminum strip holding it up at the edges or ripping it out either to keep it blank or installing a brand new pad.

Right now I am leaning towards the aluminum strip. Least amount of effort and clean result.

Anyone have any input on how much louder and warmer it gets without a sound pad? I had none on my SC and it was just fine.

G
I got an answer from the manufacturer. They said the aluminum foil side faces the cabin and rubber side faces the engine. I think the sample pic we see on the PP site shows another product which has foil on both sides. I should find someone in my area who did opposite way. It may not be much different at least to our sense but should be interesting. BTW, anyone works for Bose or JBL here?

BW

Last edited by Bubbling well; 03-16-2011 at 09:49 AM..
Old 03-16-2011, 09:47 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
Bubbling well's Avatar
 
Join Date: Nov 2008
Location: Oakland, CA
Posts: 157
Garage
Quote:
Originally Posted by BenBgood View Post
I just installed mine last week...I actually put the foil out to engine to reflect heat and "bounce" noise...not sure if its right...but it sure looks pretty 8-p...Kind-of remindes me of the McClearn F1 with the gold plated heat reflectors in the engine bay ;-)

I'd be really interested to know If I got this right...
I think I did right to my driving style. I most likely open the windows and it's a Targa. Yeah, I am in sunny California! So I would rather absorb the sound than reflect in the engine compartment. I don't think my ears are that sensitive but in theory...

But I really wanted my engine room shinny though.

BW
Old 03-16-2011, 10:02 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Join Date: Sep 2010
Location: Chicago
Posts: 75
Garage
Thanks for checking-up on this...I still have not done the engine re-install...And I only "mocked it up" i.e. no adhesive used...I now need to decide as to whether or not to flip it over and "read the instructions" ;-)
Old 03-17-2011, 06:15 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
Bubbling well's Avatar
 
Join Date: Nov 2008
Location: Oakland, CA
Posts: 157
Garage
Here are some pix...





I have only used the trim adhesive on the top side of the pad since it's held by 10 round clips and fasteners for hoses and lines. Also, to bind and waterproof the edge, I used the rubberize material(red) that is normally used for electrical wire for insulation. So it won't shed.

Hope it helps.

BW

Last edited by Bubbling well; 03-17-2011 at 11:12 AM..
Old 03-17-2011, 11:05 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
964TargaC2's Avatar
 
Join Date: Nov 2010
Location: Missouri
Posts: 2,056
I ran for a long time without the sound pad, didnt notice much difference, I put in the foil backed one and the Mfgr says the foil faces the passenger compartment, not the engine
Old 04-26-2011, 02:57 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
Crimson Nape Racing's Avatar
 
Join Date: Oct 2006
Location: Mid-South
Posts: 108
Quote:
Originally Posted by aigel View Post

Anyone have any input on how much louder and warmer it gets without a sound pad? I had none on my SC and it was just fine.

G
I took mine out and the engine compartment looks better (IMHO) and the noise difference was very slight. I also think extra noise is a good thing.
__________________
Bob
96 993 TT
73 911E 3.6 (sold)
89 944S2
Old 04-26-2011, 06:31 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Now in 993 land ...
 
aigel's Avatar
 
Join Date: Mar 2003
Location: L.A.-> SF Bay Area
Posts: 13,674
Garage
I ended up pulling the sagging pad and not replacing it. I cleaned it up well and kept the plastic puck nuts in case I change my mind. I can't tell a difference in noise or temperature. Looks much nicer in there now, too. Getting all the adhesive off was a PITA but with a mask and some adhesive remover, I got it scrubbed nicely.

G
__________________
97 993
81 SC (sold)
Old 08-12-2012, 12:10 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered User
 
Join Date: Apr 2015
Location: Bay Area
Posts: 48
Is it possible to replace the pad while the engine is in the car? Mine is sagging. Likely more difficult, but is it even possible?
__________________
1990 964 C4
Old 10-29-2016, 03:23 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
KNS KNS is offline
Registered User
 
Join Date: Jan 2004
Posts: 5,486
You'd have to at least drop the engine a few inches to gain access to the whole pad. It wouldn't be easy but possible.

I changed the engine pad in my old 911SC by dropping the engine about four or five inches and it came out great but there looks to be more stuff in the 964/993.
__________________
Kurt
1984 911 Carrera
Old 10-29-2016, 04:20 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
 
Registered User
 
Join Date: Nov 2012
Posts: 39
Garage
I just replaced my 993's pad when the engine was out with the Appbiz Ultimate pad from here on Pelican. It was a bit challenging getting the new pad situated with the engine out, so I can't imagine the number of swear words that would be induced if I tried with the engine in.

If the pad's sagging near the trunk edge and the engine's not out already, I would consider David Etter's Pad Keeper (The Pad Keeper). I even installed one on my new pad because I liked the clean look.

For those using the Ultimate pad, I found that a pencil-style soldering iron was the easiest way to punch holes in the ultimate pad.

Here's a link to my full write-up. Two-Fourths Full: A Porsche 993 Blog: Engine Pad Replacement
__________________
"Ella"
1996 Carrera C2
Bilstein HD, H&R Springs, FDM SSK & Goldenrod, TechArt Strut Tower Bar, T-Light HID
For my 993 thoughts, photos, upgrades, repairs, etc: http://twofourthsfull.blogspot.com/
Old 10-30-2016, 10:04 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
Join Date: Jun 2013
Location: Small town Oklahoma
Posts: 731
Garage
Quote:
Originally Posted by 2000m2 View Post
Is it possible to replace the pad while the engine is in the car? Mine is sagging. Likely more difficult, but is it even possible?
I put the double foil in one cer whilst engine out due to sagging so bad. PITA scraping the old stuff off. My other car was sagging bad also. I ordered " the pad keeper " no affiliation. And installed in 15 minutes.
Old 10-30-2016, 03:00 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Now in 993 land ...
 
aigel's Avatar
 
Join Date: Mar 2003
Location: L.A.-> SF Bay Area
Posts: 13,674
Garage
Quote:
Originally Posted by 2000m2 View Post
Is it possible to replace the pad while the engine is in the car? Mine is sagging. Likely more difficult, but is it even possible?
I'd rather stick myself in the eye with a fork than trying that. Everything is possible, but unless you have a show car, why not wait until the engine is out down the road?

What I have seen done is pad removal with a partial engine drop. On a 3.2. That did not remove all the goop adhesive though. It was better looking than the sagging pad but still required an engine out to clean it all up nicely.

G
__________________
97 993
81 SC (sold)
Old 10-30-2016, 10:29 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Registered User
 
Join Date: Jan 2018
Posts: 5
I am in the process of installing a new pad with the engine still in. Suspension, airbox, alternator, a/c compressor is free....just slowly taking my time with this....great time to clean the engine bay though!
Old 01-12-2019, 10:20 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 11:54 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.