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View Full Version : How To: Make a Boost leak tester



DRFTR8
01-22-2007, 04:29 PM
Ok here is a run down on what is needed to make a boost leak tester and how to use it. I will have pic of how it should look like on the car soon.

Material:
http://img.alibaba.com/photo/51035962/Coupling.summ.jpg
1- 2" to 2" coupler (with clamps on both sides)
http://images.orgill.com/200x200/7572878.jpg
1- 1/4" hose fitting
http://www.hardwarestore.com/media/product/241265_front100.jpg
1- 2" PVC threaded end cap
http://ec3.images-amazon.com/images/P/B0002KL5UM.01-ADG953YR6NRBF._AA280_SCLZZZZZZZ_.jpg
1- tube of Silicone sealant
http://www.restaurant-giardino.ch/koishop/images/teflon-tape.jpg
1- plumbers teflon tape
http://www.aerocraftparts.com/images/MIL-H-6000.jpg
1- 3ft 1/4" vacuum hose (you can buy this at kragen)
http://www.mdc-vacuum.com/graphics/img3313.jpg
2- 1/4" clamp
http://www.partsamerica.com/product_images/img/vct/m8838.jpg
1- valve stem extension
1- electric tire pump (if you dont have a compressor)

How to assemble:
First you will need to drill a hole on the PVC cap big enough to fit the brass fitting, make sure you dont make it too big cuz you will need to buy another one. Once you have a hole you will need to get the fitting and wrap the threaded part twice with the plumbers tape. Then connect the hose to the fitting, dont forget to install the hose clamp to assure that the home wont come loose. On the other end of the hose fit the valve stem extension then use the hose clamp to keep the valve stem in place. After you complete the hose you will need to attach the PVC cover in the 2" tube, but before you tighten it down apply a semi thick coat of Silicone sealant to the threaded part of the cover and then tighten it up allowing the silicone to dry for an hour.

Using the Boost leak tester:
Remove your airbox along with the induction hose. You will need to connect 2" hose that you just made to the intake portion of the turbo...make sure that it the intake is completely sealed before you tighten down on the clamp... attach the bike pump to the valve stem and let the pump fill up to 5psi (watch your boost gauge) and then turn it off to listen for any leaks. Repeat the process from 10psi to 20psi to see if anything leaks is present.