Tom M'Guinn

The dang thing just fell off...wonder how long its been leaking...and how much HP I'll get back by capping it...

OriginalSterm

mine was snipped off and pinched, how do i cap it properly?

Tom M'Guinn

My plan is to pull it off and put a lug nut on the threads, assuming I can get it off.

tconn

Mine came loose during a DE event. Ended up against the coolant hose at the back of the engine and burned a hole in it. Coolant sprayed onto the headers
and started to burn. Luckily I had fire extinquisher handy. It now resides on a shelf in my shop.

sweanders

Mine let go while I was flat out at 260 km/h.. That scared me, a lot. I thought I had blown something up with the new whoosing noise all of a sudden.

Tom M'Guinn

So what are the chances something won't break if I try to remove the tube stube and cap it with a lug nut? PB Blaster and MAPP gas at the ready....

jerome951

I just pulled mine while doing the rod bearings. Soak it w/ PB Blaster and let it sit a bit. Wasn't too difficult to get off after that though access is tough. However, the other attachment to the body that you need to remove is a PITA to reach.

tconn

PB Blaster and it came right off the crossover without any problems.
Corrosion isn't a problem because of the alloy it's made from.

Tom M'Guinn

Well, it came off with PB Blaster, using an 18 inche bar and a 17mm crowsfoot. Replaced it with a lug nut off my old 911. Kicking myself for not realizing something was wrong -- I had been hearing a new air-rush sound under WOT -- kept thinking one of my windows was open a little somewhere or the weather-stripping went bad. It was the exhaust leak from the pipe -- all gone now. The car also has its punch back in full force...almost makes me wonder why I want to build this 3L.... almost...

theedge

http://www.lindseyracing.com/Merchan...951EXHAUSTMISC

Ive got one of those.

Eyal 951

nifty looking peice brian, but 25 plus shipping for it is excessive since lugnuts are free typically, and you can't see down there.

Tom M'Guinn

True... although, if it is contoured to match the bevel in the CO2 port, then it would be better than using a Porsche lug nut in my opinion. The bevel on the lug nut prevents it from really seating on the port -- the edge of the lug nut bevel kind of knifes into the port with very little contact area.

Eyal 951

thats true, I used some random lugnut of some random car with no real bevel like that. Only downside is that its shiny, but like I said, unless your looking for it, you can't see it.

Sam Lin

Tom, the Porsche OEM cap seals via the sealing bevel at the tip of the test port threads, while a lug nut seals using the threads themselves. The difference is painfully obvious if you have to remove the cap for any reason after driving the car a bit.

Sam

Tom M'Guinn

It was pretty obvious going on...but it's all I had handy. I did use plenty of antiseize, hoping that will help. Is the Lindsey cap an OEM Porsche part?