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Author Topic: DIY: How to make ball bearing boost tap  (Read 3663 times)

daxter

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DIY: How to make ball bearing boost tap
« on: September 08, 2010, 01:32:07 PM »
I Use this on my R34 25GT+T :).
Will give you much better performance than any bleed valve, don’t waste your money on $100 bleed valves. – Bleed valves also increase lag due to it continuously bleeding air it takes longer to reach your set boost level.

Step one, acquire the parts (sorry I don’t have the size's but there basically the smallest brass parts you can get)

Make sure you don’t get a too stiff spring, (also don’t use a bic pen spring, there to flimsy and will make the steel ball vibrate/flutter, causing all sorts of issues)



Step two, drill a tiny hole (1mm) in the back of the T pipe - this lets air bleed out when the waste gate and boost tap close.

Step Three, cut the top off the joiner, then tap the inside of it.



Step four, assemble the parts, use this image and the one above to see how too, if you need me to explain just ask.



Step five, install so the air flows to the waste gate in this direction.



(To adjust boost, Screw the allenscrew up or down to change the pressure on the spring (down adds boost))

The way this boost tap works is it does not let air through to the waste gate till you reach your set boost level, the result is super fast spool up and more boost earlier in the rev range due to it not bleeding air off to the atmosphere

Enjoy

ps, I hold no responsibility for you ****ing up your car btw :p
« Last Edit: September 10, 2010, 11:03:56 AM by daxter »

b00stinz

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DIY: How to make ball bearing boost tap
« Reply #1 on: September 12, 2010, 07:10:16 PM »
Just saw this now, pretty good write up, Im suprised the bigger companies didnt use this design instead of the usual air bleed type.
The allen key screw has to be a little bigger than the spring itself right? What happens if you screw it too far in though, wont you block the exit to wastegate completley?

Do you notice a difference using this one and the ones you buy on trademe?

daxter

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DIY: How to make ball bearing boost tap
« Reply #2 on: September 13, 2010, 08:29:59 AM »
Yeah I don't like bleed valves, I used to use a GFB atomic boost control, then I made the ball an spring controller, the difference in boost was instance, full boost much much earlier in the rev range. Was even making good boost reversing out of the drive way lol.

The allen key screw needs to touch the spring to adjust the spring pressure. If you are worried about blocking the exit hole you could drill it lower. - You would be making about 25psi screwing it that far down tho :p

SCR32

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DIY: How to make ball bearing boost tap
« Reply #3 on: September 14, 2010, 07:17:51 AM »
Or, you could pay Turbotech the small amount money they are asking for a boost controller, that they designed, and you are ripping off.

http://autospeed.co.nz/cms/title_Thirty-Dollar-Boost-Control/A_2687/article.html

http://www.skylinesaustralia.com/forums/good-cheap-boost-contr-t73375.html&

daxter

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DIY: How to make ball bearing boost tap
« Reply #4 on: September 14, 2010, 09:25:46 AM »
Ripping off? I don’t believe I’m charging anyone for it. Besides there not the only ones that make and sell these style of boost controllers.

Been a Kiwi I like to DIY and experiment with making my own stuff, thanks.
« Last Edit: September 14, 2010, 09:56:47 AM by daxter »

sublime89

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DIY: How to make ball bearing boost tap
« Reply #5 on: September 14, 2010, 05:27:17 PM »
that looks pretty good, gonna have a go on the weekend at making this.

Ethan

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DIY: How to make ball bearing boost tap
« Reply #6 on: September 14, 2010, 06:36:08 PM »
Quote from: SCR32;509345
Or, you could pay Turbotech the small amount money they are asking for a boost controller, that they designed, and you are ripping off.

http://autospeed.co.nz/cms/title_Thirty-Dollar-Boost-Control/A_2687/article.html

http://www.skylinesaustralia.com/forums/good-cheap-boost-contr-t73375.html&


farr clam down shiiit you dont know he ripped it off

willyhoux

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DIY: How to make ball bearing boost tap
« Reply #7 on: August 26, 2011, 12:51:42 PM »
I made me one of these boost taps can anyone tell me the best place to connect it to.

Neal

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DIY: How to make ball bearing boost tap
« Reply #8 on: August 26, 2011, 01:19:36 PM »
Read that link above, it tells you where to put it etc.

willyhoux

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DIY: How to make ball bearing boost tap
« Reply #9 on: August 26, 2011, 03:16:48 PM »
Cool thanks

driftae76

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DIY: How to make ball bearing boost tap
« Reply #10 on: December 28, 2011, 11:11:23 PM »
Quote from: SCR32;509345
Or, you could pay Turbotech the small amount money they are asking for a boost controller, that they designed, and you are ripping off.

http://autospeed.co.nz/cms/title_Thirty-Dollar-Boost-Control/A_2687/article.html

http://www.skylinesaustralia.com/forums/good-cheap-boost-contr-t73375.html&


Or, you could make one yourself and save $25...

D1LEMA

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DIY: How to make ball bearing boost tap
« Reply #11 on: December 29, 2011, 03:17:55 PM »
Lol ... if you cant even afford to buy a $25 boost tap of all things ..there is no way you should own a performance car

Dumbledore

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Re: DIY: How to make ball bearing boost tap
« Reply #12 on: October 23, 2015, 10:24:04 PM »
what spring did you use and what ball bearing ?