Product Name:  
Product Description:  
Kompact Nissan PB BOV  
Skyline GTS-t R32- R33,  
Skyline GT-T R34, Skyline GTR R32 – R34, GTR R35  
Product Number: TS-0203-1226  
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IMPORTANT NOTES:  
Please thoroughly read and understand these instructions before commencing this installation.  
The thread on the cap for the vacuum source is AN#3. The standard swivel nipple can be changed to a AN#3 fitting if desired.  
The Kompact Plumb back is designed to be open at idle and does not require adjustment.  
The Nissan GTR series requires 2 Dual Port BOV kits to replace the 2 standard Bypass valves. Each BOV kit is sold  
separately.  
RECOMMENDATIONS  
Turbosmart recommends that your Blow off valve (BOV) is fitted by an appropriately qualified technician  
Turbosmart recommends that a boost gauge be permanently fitted to the vehicle  
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HOW TO INSTALL YOUR BOV  
Please check that the following items have been provided in your kit.  
Quantity  
Description  
Kompact Nissan PB BOV  
Gasket  
Use  
Model Specific Plumb back blow off valve  
To seal the BOV to the intercooler pipe  
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Installation on a R35 GTR  
1)  
Remove the two standard BOV’s by removing the securing bolts, plumb back hose and vacuum source.  
Remove standard  
BOV’S  
2)  
Install the Kompact BOV’s using the standard bolts. Remember to put in the provided gaskets between the flange and the  
BOV. Replace the plumb back hose and secure with the standard clamp. Refit the standard vacuum lines and secure with  
clamps. Start the car and check for leaks.  
Installation on a Skyline GTS-t and GT-T (Diagrams from a R33 Skyline GTS-t)  
1)  
Locate standard BOV on the inlet manifold. Remove the plumb back hose and vacuum nipple by removing the hose clamps.  
Unbolt the BOV flange and remove the standard BOV.  
Vacuum hose  
Standard BOV  
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2)  
Install the Kompact BOV’s using the standard bolts. Remember to put in the provided gaskets between the flange and the  
BOV. Replace the plumb back hose and secure with the standard clamp. Refit the standard vacuum lines and secure with  
clamps. Start the car and check for leaks.  
Installation on a R32 – R34 Skyline GTR (2 Kompact Nissan BOV’s are required to replace the 2 standard  
BOV’s)  
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Locate the standard BOV’s. On all GTR models, they are located on the left hand side of the front bumper bar.  
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Remove the pipe adapter with the two standard BOV’s from the intercooler pipe. Access to this pipe might require the removal  
of the left hand head light and/or front bumper bar depending on the model.  
3)  
Unbolt the two standard BOV’s and replace them with the two Kompact BOV’s. Remember to use the provided gaskets  
between the mounting flange and the BOV flange.  
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Reinstall the pipe and hook all necessary lines.  
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Start the car and check for leaks. Proceed in adjusting spring tension.  
MAINTENANCE  
Turbosmart recommends that the following maintenance procedure is carried out at six monthly intervals or at higher intervals if the  
environment is very dusty or wet. Regular maintenance will ensure that your BOV is operating at its peak performance and will extend  
the working life of the product.  
Remove the cap of the BOV by rotating in an anti-clockwise direction CAUTION, the cap is under spring force, remove with  
care!  
Carefully remove the piston and thoroughly clean the piston and the bore of the BOV  
Inspect the surface of the piston and the bore of the BOV for scoring or excessive wear, silver coloured marks on the bore are  
an indication of excessive wear  
Check the Base O-ring and the Cap O-ring for any damage – replace if necessary  
Lubricate the bore and the piston with Uni-Glide™, hydraulic oil or sewing machine oil – DO NOT use grease or viscous oils  
Re-assemble the BOV in the reverse order  
TROUBLE SHOOTING  
The following points should be checked if you find that your engine is dipping below normal idle, stalling or if the BOV is functioning  
poorly. Please note: the following checks will cure 99% of problems experienced with a BOV.  
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Check the vacuum hose for splits, cracks, loose connection, kinking or any obstruction – old or fatigued hose may collapse  
under vacuum causing an obstruction.  
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With the engine running remove the vacuum / boost hose from the nipple in the cap of the BOV, there should a loud hissing  
sound. The engine should idle poorly, double check by covering the end of the hose with your finger otherwise the hose is  
blocked.  
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Check to see if the BOV is blocked or contaminated with dirt or debris.  
Ensure that the vacuum / boost source is not shared and that the vacuum source is directly from the inlet manifold.  
Check the seal between the intercooler flange and the BOV. Make sure the supplied gasket is installed and the BOV Flange  
is secured on the intercooler flange with the two factory bolts.  
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Ensure the spring clamps are secured on silicon hoses and fittings.  
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TURBOSMART  
ONE YEAR LIMITED WARRANTY  
Turbosmart is a company built on Customer Satisfaction and Service. That is why all of our products go through regimented test procedures before they are packaged and shipped. Turbosmart stands  
behind its products for one full year after purchase. Terms of Warranty, Service and Returns are as follows:  
Limited Warranty: Turbosmart warrants its products to be free from defects in material and workmanship under normal use and if properly installed for a period of one year from date of purchase. If found  
to be defective, it will be replaced or repaired if returned prepaid along with proof of date of purchase. This shall constitute the sole remedy of the purchaser and the sole liability of Turbosmart to the extent  
permitted by law, the foregoing is exclusive and in lieu of all other warranties or representations whether expressed or implied, including any implied warranty of merchantability or fitness. In no event shall  
Turbosmart be liable for special or consequential damages. This warranty is only valid on products purchased from Turbosmart Authorized Dealers.  
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A NEW AND UN-USED  
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Happy motoring!  
The Turbosmart Team.  
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