Boost Leak Tester

Here is a DIY on how I made a boost leak tester for my Turbo it has a 4" inlet .

Go to a local hardware/plumbing store and get these items:

3" PVC Female Adapter

http://i540.photobucket.com/albums/g...ps8de834ce.jpg

3" PVC Cleanout Plug

http://i540.photobucket.com/albums/g...psd38e5237.jpg

Fitting of your choice depends how you wanna set it up the top fitting makes no sense so I would NOT get one of those I'd chose one of the bottom 2 choices in the pic.

http://i540.photobucket.com/albums/g...ps3829a8fd.jpg

Air Regulator and the proper fitting for your air connection and the fittings to hook it to your air system or the pvc cap whichever you chose.Your compressor may already have an adjustable regulator so you may not need to purchase one.

http://i540.photobucket.com/albums/g...ps69a5ce8c.jpg

4" coupler to go on the turbo I already have one on mine so I didn't need to buy one.

http://i540.photobucket.com/albums/g...ps1de1ad81.jpg

Ok here goes

1- Drill the pvc cap

http://i540.photobucket.com/albums/g...ps42e83e34.jpg

Select the fitting you wanna use and thread it into the cap I was able to simply clamp the fitting in the vise and press down on the cap pretty good rotate the cap onto the fitting threading it in.

http://i540.photobucket.com/albums/g...ps4a21a763.jpg

I found an old hose in my tool box from an old compression tester so I cut the end off and put it on the barb and clamped it and then threaded the two pvc pieces together , this is what you end up with.

http://i540.photobucket.com/albums/g...psae5c128f.jpg

Most boost leak testers are done like so with an air fitting in the end but since I had the old compression tester hose I did mine differently. Its up to you which connection you put in the pvc cap.

http://i540.photobucket.com/albums/g...psccaf457a.jpg

Then adjust the regulator to the desired psi and install the tester into you turbo inlet and clamp the coupler down on the tool.

http://i540.photobucket.com/albums/g...psc999fa28.jpg

Then hook your air line to your fitting on the boost tester .I didn't use the regulator I posted earlier . I actually used the regulator from my mac tools leak down tester

http://i540.photobucket.com/albums/g...ps05ac31c7.jpg

Now with the system pressurized have fun finding the leaks I have found 3 leaks since making the tool .Thanks to my push leak fittings oh I mean push lock fittings :biggrin:

Very nice there pal. Love it.

So did you not need to thread the pvc cap? Looks like you just made a hole and stuck the fitting in?

Quote:

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Originally Posted by aLmk

So did you not need to thread the pvc cap? Looks like you just made a hole and stuck the fitting in?

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Yep just drilled a hole in the cap and put it in the vise and pressed down with some pressure and it threaded it nice and snug.

Quote:

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Originally Posted by monjarassi

Very nice there pal. Love it.

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Thanks man

Quote:

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Originally Posted by vdubkilla

Yep just drilled a hole in the cap and put it in the vise and pressed down with some pressure and it threaded it nice and snug.

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Gotcha, so no thread sealant either? Just sealed via pressure?

Quote:

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Originally Posted by aLmk

Gotcha, so no thread sealant either? Just sealed via pressure?

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No I didn't use any I was going to but I tried it and the fitting didn't leak in the cap .I thought it would but as long as you don't drill the hole to big in the cap and the fitting threads in tight then your good at least mine is .

Quote:

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Originally Posted by vdubkilla

No I didn't use any I was going to but I tried it and the fitting didn't leak in the cap .I thought it would but as long as you don't drill the hole to big in the cap and the fitting threads in tight then your good at least mine is .

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So you did spin the fitting while pushing it in? But you drilled it with just a regular drill bit, right? Not an NPT tap?

Quote:

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Originally Posted by aLmk

So you did spin the fitting while pushing it in? But you drilled it with just a regular drill bit, right? Not an NPT tap?

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No I clamped the fitting in the vise and pressed down on the cap and threaded it onto the fitting .

Quote:

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Originally Posted by vdubkilla

No I clamped the fitting in the vise and pressed down on the cap and threaded it onto the fitting .

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Gotcha, so you spun the cap, sorry for being so stupid :hiding:

yeah I posted a pic above of the fitting clamped in the vise then ya spin the pvc cap onto it

perfect tool for you turbo guys, great DIY!

Thanks