Porsche Enthusiasts Club Forum

It is currently Thu Mar 28, 2024 9:01 pm
Classic Line Insurance


All times are UTC [ DST ]




Post new topic Reply to topic  [ 122 posts ]  Go to page Previous  1 ... 5, 6, 7, 8, 9
Author Message
 Post subject: Re: Club Trackday 2016
PostPosted: Sat Jul 23, 2016 1:30 pm 
Offline
Moderator
Moderator

Joined: Wed Nov 07, 2007 12:00 pm
Posts: 1510
Location: Kingston upon thames
Digi944 wrote:

Do bad engine mounts really cause a lot of problems?


They can do, I must state that my fuel rail is a 968 version and the design is sightly worse.
However, worn mounts allow the engine to move more side to side under heavy load, on and off of full throttle gives lots of flex.
The fuel hose will tug slightly on the weak metal of the rail and can cause it to crack.
Very unlikely in a std road car

Another big cause is incorrect balancer shaft timing, look on the American forums and some racers were going through 6 rails a year

_________________
Cayenne S 4.5 06 Basalt Black
924S 87 Guards Red
924S 87 Alpine White Sold
Boxster 2.7 Silver 00 Sold
Boxster S Meridian 01 Sold
928 S2 Prussian Blue 86 Sold
993 C4 Arena Red 97 Sold


Top
 Profile  
Reply with quote  
 Post subject: Re: Club Trackday 2016
PostPosted: Tue Aug 02, 2016 4:47 pm 
Offline

Joined: Mon Aug 23, 2010 7:58 am
Posts: 703
Location: Yateley, Hampshire.
TIPEC membership: 6489
JasonGibson wrote:
PaulPSB wrote:
Thanks to everyone that came along last weekend and helped make it a great day :D

Found out why the car was running so rough on track - got a leak from the fuel rail :(


I know all about those, on my 3rd now but hopefully sorted out why.
I know Glenn had one crack, replacement engine mounts cured his, mine we think was gearbox mounts causing the vibrations


Yes. To confirm Jason's comment, I had (at least*) two fuel rails fracture and start leaking on my 944 2.7 due to worn/failed engine mounts causing excessive vibration. The cracks on the rail appeared near the brackets which mount the rail to the engine.

[* I say "at least" as the fuel rail on the car when I bought it was very shiny and new, making me suspect it had already been replaced due to an earlier fracture.]

_________________
Glenn
944 S2 ("Trigger")
944 2.7 road-legal track-day car ("Doris") [Sold]


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 122 posts ]  Go to page Previous  1 ... 5, 6, 7, 8, 9

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 10 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group