05-14-2020, 04:44 AM
|
#1
|
Registered User
Join Date: Sep 2018
Location: Illinois
Posts: 249
|
997 T plenum
A question for anyone who has installed the 997 plenum: how did you compensate for the large difference in diameter from the plenum outlet to the manifold? There' a 9mm step there and only a short distance to make it. I've ordered some step-down silicone hose but think it's going to be too long to work.
|
|
|
05-14-2020, 06:49 AM
|
#2
|
Artist, 986S tinkerer
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,821
|
Watch this video on my YouTube channel to see the simple solution at 3:15.
https://www.youtube.com/watch?v=QHAoJDKqxZE :dance:
__________________
James now has: 2008 987S 6 speed
Crashed: 2010 987.2 pdk in speed yellow! 
Sold to a cool racer chick: 2004 986 S
YouTube channel: the PORSCHE as seen by NewArt
www.youtube.com/channel/UCohdrH2xHTklM1thxk0KKOQ?
|
|
|
05-14-2020, 07:24 AM
|
#3
|
Registered User
Join Date: Sep 2018
Location: Illinois
Posts: 249
|
Do you worry they'll fail being stretched that far?
I would love to have seen you fit the plenum in there with them attached! I'll bet it was fun.
__________________
A cynic is a man who, when he smells flowers, looks around for a coffin.
-H. L. Mencken
|
|
|
05-14-2020, 07:58 AM
|
#4
|
Artist, 986S tinkerer
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,821
|
Quote:
Originally Posted by Newsguy
Do you worry they'll fail being stretched that far?
I would love to have seen you fit the plenum in there with them attached! I'll bet it was fun.
|
Not really a big problem. I ordered a set of silicone reducers but in the end I never used them since the factory ones fit nicely.  The original sleeves stretch easily if they're warm. They are quite strong.
__________________
James now has: 2008 987S 6 speed
Crashed: 2010 987.2 pdk in speed yellow! 
Sold to a cool racer chick: 2004 986 S
YouTube channel: the PORSCHE as seen by NewArt
www.youtube.com/channel/UCohdrH2xHTklM1thxk0KKOQ?
|
|
|
05-14-2020, 08:09 AM
|
#5
|
Motorist & Coffee Drinker
Join Date: Jul 2014
Location: Oklahoma
Posts: 3,889
|
My 2000 was already modified when I bought it, but it has the silicone reducers.
Here's pics from when I was cleaning out the oil from a bad AOS:
__________________
I am not an attorney, mechanic, or member of the clergy. Following any advice given in my posts is done at your own peril.
|
|
|
05-14-2020, 11:01 AM
|
#6
|
Registered User
Join Date: Nov 2019
Location: Orange County, CA
Posts: 57
|
Currently using the OEM ones as well. They fit. Should be good for a long time!
|
|
|
05-14-2020, 04:26 PM
|
#7
|
Registered User
Join Date: Aug 2017
Location: Tucson,az
Posts: 749
|
Is this Mod worth doing on a 2.7,.I would keep my air box,.MAF sensor Etc..and just change plenum and TB.?? or do you need to change the air tube and box aswell..??
|
|
|
05-14-2020, 05:47 PM
|
#8
|
Registered User
Join Date: Sep 2018
Location: Illinois
Posts: 249
|
If you search the other threads, I think you'll find the 987 airbox is critical to helping breathing.
__________________
A cynic is a man who, when he smells flowers, looks around for a coffin.
-H. L. Mencken
|
|
|
05-18-2020, 07:48 PM
|
#9
|
Motorist & Coffee Drinker
Join Date: Jul 2014
Location: Oklahoma
Posts: 3,889
|
One more thought while the topic is up: The hose that goes from the AOS to the throttle body did not fit well with the 997 Plenum on my car. I took it off and used a heat-gun to soften it and flex it to a better fit. Is there a better hose to use or did anyone fabricate a good one?
__________________
I am not an attorney, mechanic, or member of the clergy. Following any advice given in my posts is done at your own peril.
|
|
|
05-19-2020, 05:47 AM
|
#10
|
Artist, 986S tinkerer
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,821
|
Quote:
Originally Posted by 78F350
One more thought while the topic is up: The hose that goes from the AOS to the throttle body did not fit well with the 997 Plenum on my car. I took it off and used a heat-gun to soften it and flex it to a better fit. Is there a better hose to use or did anyone fabricate a good one?
|
I did the same as you although if the hose is old, it might crack. I'm sure someone has made their own tube?
__________________
James now has: 2008 987S 6 speed
Crashed: 2010 987.2 pdk in speed yellow! 
Sold to a cool racer chick: 2004 986 S
YouTube channel: the PORSCHE as seen by NewArt
www.youtube.com/channel/UCohdrH2xHTklM1thxk0KKOQ?
|
|
|
05-19-2020, 06:11 AM
|
#11
|
550 Anniversary
Join Date: Jul 2012
Location: Surrey, UK
Posts: 747
|
Quote:
Originally Posted by flmont
Is this Mod worth doing on a 2.7,.I would keep my air box,.MAF sensor Etc..and just change plenum and TB.?? or do you need to change the air tube and box aswell..??
|
You can change the plenum and throttle body but will need to make up a run from the MAF to throttle body.
|
|
|
05-19-2020, 10:40 AM
|
#12
|
Who's askin'?
Join Date: Mar 2018
Location: Utah
Posts: 2,448
|
Quote:
Originally Posted by NewArt
I did the same as you although if the hose is old, it might crack. I'm sure someone has made their own tube?
|
I made my own from a clear wire- reinforced hose, with about a foot extra, looped down below the tb, so if it gets accumulation I can see it. Works REALLY, really well.
The non reinforced hose didn't work.... when it was warm it would collapse under vacuum.
Sent from my SM-G970U using Tapatalk
|
|
|
05-19-2020, 12:36 PM
|
#13
|
Artist, 986S tinkerer
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,821
|
Quote:
Originally Posted by maytag
I made my own from a clear wire- reinforced hose, with about a foot extra, looped down below the tb, so if it gets accumulation I can see it. Works REALLY, really well.
The non reinforced hose didn't work.... when it was warm it would collapse under vacuum.
Sent from my SM-G970U using Tapatalk
|
Yeah, didn't you make a post about that? Maybe a thread about catch-cans or something? Or was that someone else?
__________________
James now has: 2008 987S 6 speed
Crashed: 2010 987.2 pdk in speed yellow! 
Sold to a cool racer chick: 2004 986 S
YouTube channel: the PORSCHE as seen by NewArt
www.youtube.com/channel/UCohdrH2xHTklM1thxk0KKOQ?
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is On
|
|
|
All times are GMT -8. The time now is 01:31 AM.
| |