Go Back   986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical Chat

Post Reply
 
LinkBack Thread Tools Display Modes
Old 12-13-2006, 12:45 PM   #1
Registered User
 
Join Date: Aug 2005
Location: Overland Park, KS
Posts: 180
Quote:
Originally Posted by MNBoxster
Hi,

The issue between Super/Turbo was that the Supers usually have an independent Oil supply, while the Turbo generally shares the engines Oil supply.

If you simply shut the car down, the Oil flow around the turbine bearing stops and the Oil in the Bearing Housing will superheat and turn to Coke. This Coke, a form of Carbon which when cracked from Oil produces a granular form which is pretty hard can be pretty destructive. These coke crystals will then flow through the engine causing excess wear (think sand flowing through the engine).

Many turbo cars were equipped with cool down circuits, which continued to run the car at idle a few minutes to remove the Heat from the Bearing Housing until it was below the critical threshold where Coke formation took place. Or, owners allowed the car to cool down by allowing it to idle several minutes before shutting it off.

But, with Synthetic Oil, Coking is largely eliminated because of the Oil's greater stability at high temps. This prevents a breakdown into Coke. Hope this helps...

Happy Motoring!... Jim'99
That is only true of some superchargers. Vortec Superchargers use oil from the engine via a feed and drain line. We use procharger units, which are self contained oiling systems so we don't have this problem.
__________________
Karl Wilen
RennsportKC
PorscheDoc is offline   Reply With Quote
Old 12-13-2006, 12:58 PM   #2
Registered User
 
rule1's Avatar
 
Join Date: Jul 2006
Location: Shawnee, KS
Posts: 159
2.7

PoscheDoc, When will you have a supercharger kit for the 2.7?
rule1 is offline   Reply With Quote
Old 12-14-2006, 05:43 AM   #3
Registered User
 
Join Date: Aug 2005
Location: Overland Park, KS
Posts: 180
Quote:
Originally Posted by rule1
PoscheDoc, When will you have a supercharger kit for the 2.7?
We actually have no timeframe for a 2.7L kit at this time. Maybe down the road once the 2.5L and 3.2L kits really take off (ie, getting additional dealers and qualified installers setup), then we will go after that kit. Once I can get some experienced wrenches in here, it will free up a little more time for those R&D projects.

We thought we had a 987 coming for a prototype supercharger kit, which was suppose to be here already, but the car hasn't shown up yet.
__________________
Karl Wilen
RennsportKC
PorscheDoc is offline   Reply With Quote
Old 12-14-2006, 06:07 AM   #4
Registered User
 
Join Date: Nov 2006
Location: NYC area
Posts: 681
Can't wait for that.

I better begin saving.
__________________
Miss my Boxster
Bavarian Motorist is offline   Reply With Quote
Old 12-14-2006, 06:08 AM   #5
Registered User
 
rule1's Avatar
 
Join Date: Jul 2006
Location: Shawnee, KS
Posts: 159
2.7

Will the 986 setup differ from the 987? I have a 986.
rule1 is offline   Reply With Quote
Post Reply



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 03:17 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page