Pelican Parts Forums

Pelican Parts Forums (http://forums.pelicanparts.com/)
-   Porsche 911 Technical Forum (http://forums.pelicanparts.com/porsche-911-technical-forum/)
-   -   What to use to repair CIS airbox? (http://forums.pelicanparts.com/porsche-911-technical-forum/386158-what-use-repair-cis-airbox.html)

Cdnone1 10-23-2014 05:35 PM

If no one else wants it I would like to buy the air box for $40
I will PM you

timmy2 10-23-2014 05:56 PM

Lol, he posted that 6 years ago! :)


Sent from my iPhone using Tapatalk

Cdnone1 10-23-2014 09:15 PM

Well I am willing to adjust for inflation. Thanks for pointing that out!

SCadaddle 10-23-2014 09:33 PM

"Superglue" aka cyanoacrylate glue I've used for years in the RC model airplane hobby. Nowadays it can be purchased at your local hobby shop under the brand name of "Zap" and they even make a product called "Plasti-Zap". The Loctite stuff looks like it includes a bottle of accelerant that is commonly known as "Zip-kicker" at the hobby shop.
I haven't tried it with the Plasti-Zap, but for the regular Zap if you want to fill in an area with wood in the model planes we would lay a fillet of baking soda between the parts and add a drop of the "Thin" consistency Zap. Sets up like concrete.

I will say this: If you have never used these type of glues make sure you have good ventilation and whatever you do DO NOT use the glues with the accelerants near your face or under your head for that matter--when it makes the bond a whisp of white smoke will appear and rise upwards and if it gets in your eyes it is extremely painful.:eek:

fanaudical 12-19-2014 04:37 PM

Sorry to bring back an old thread, but figured it best to document some stuff here as I have been attempting to repair a leaky airbox.

Quote:

The airbox is rotomolded polyethylene or polypropylene - both are olefinic thermoplastics....
Can anybody point me to a Porsche reference that states this?

I happen to work for a company that does a fair amount of plastic fabrication (included filled polymers). One of the welders in my shop does automotive plastic repairwork on the side. In various attempts at welding, we've been unable to get polypro or polyethylene weld rod to adhere to samples from another shattered airbox (even with significant surface prep). The sample also doesn't behave like PP or PE in that it doesn't soften/melt with heat applied; it immediately goes to a decomposing state like a thermoset.

My best guess is that the airboxes may be made of PPO/Nylon mix (tradename of NORYL) or more likely PPS (polyphenylene sulfide) based on some crude "flame testing" that I've done.

ian c2 12-19-2014 04:46 PM

Can't you use a rod cut from the spare box you have ?
I thought that's how you did it to weld plastic ?

Although my plastic welding experience is limited to that semiconductor company that have a place in oregon mentioned earlier , and making de badged grills from two golf grills many moons ago with my trusty soldering iron !! :D

PZSPEED 11-14-2015 11:22 AM

What about repairing the airbox with any of the several stated methods and then spraying it with the flex seal spray that has been talked about on TV for the last year or so...tape off the runners and sealing points and give it a nice uniform look.
About to tackle this job to see if mine is leaking and just saw that annoying comercial again and thought hmmmmm.

Mick_D 11-14-2015 02:37 PM

FYI CA glues were developed as emergency field repair gear for gunsights before the 2nd World War. Kodak 'rediscovered' it in the '50s and started selling it as a glue 9 Eastman 910) in the late '50s. Loctite bought it in the '60s and it's been popular ever since.
Did you know you can rub sugar on CA that's dried on your fingertips and it will remove it?

ivanuf 11-14-2015 03:04 PM

Here is a link to some test I did a while back

http://forums.pelicanparts.com/porsche-911-technical-forum/853053-air-box-repair-myth-reality.html


All times are GMT -8. The time now is 07:18 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website


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