You change the boost by changing the ratio of the crank pulley to blower pulley (like gears on a push bike - crank cog:rear whell cog). You make the crank pulley bigger to spin the blower faster and make more boost, or you make the supercharger puller smaller to do the same thing. With these blowers its easier to get a bigger crank pulley off some other vw model.
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Originally posted by Grunmk1 View PostYou change the boost by changing the ratio of the crank pulley to blower pulley (like gears on a push bike - crank cog:rear whell cog). You make the crank pulley bigger to spin the blower faster and make more boost, or you make the supercharger puller smaller to do the same thing. With these blowers its easier to get a bigger crank pulley off some other vw model.'07 Touareg V6 TDI with air suspension
'98 Mk3 Cabriolet 2.0 8V
'99 A4 Quattro 1.8T
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Originally posted by Grunmk1 View PostYou change the boost by changing the ratio of the crank pulley to blower pulley (like gears on a push bike - crank cog:rear whell cog). You make the crank pulley bigger to spin the blower faster and make more boost, or you make the supercharger puller smaller to do the same thing. With these blowers its easier to get a bigger crank pulley off some other vw model.
thanks for your help bro
did you have k-jet 1.8? was it a stock motor?"The Stu likes this"
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No worries. I had an AGG 2.0l which was EFI already and I used a microtech ECU. I'm not sure how to set it up with k-jet, it would make things trickier I'd imagine but its not impossible. Good luck though, it definitely gives you a good power boost!
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Originally posted by Grunmk1 View PostNo worries. I had an AGG 2.0l which was EFI already and I used a microtech ECU. I'm not sure how to set it up with k-jet, it would make things trickier I'd imagine but its not impossible. Good luck though, it definitely gives you a good power boost!
well there is a first for everything! hope it works
one last q...where do i run the bov? between the ic and the throttle body?"The Stu likes this"
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Heres a pic of my old setup, you can see the bov (or bypass valve in this case) on the pipe-work heading from the intercooler to the throttle body. Just one thing, with a blower if you say back off at 5000rpm the pressure doesn't just vent in a split second and give a little whoosh like on a turbo, it just keeps pumping out with a massive roar. It is REALLY loud. With this type of blower there are ways to get around this by activating the clutch on the blower to shut it off when the throttle is closed but I never found a way I was entirely happy with because when you'd stand on it again there was a slight delay before the blower clutch disengaged again and the power came back on. I had some ideas on things to try to get around this problem.
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Originally posted by Grunmk1 View PostHeres a pic of my old setup, you can see the bov (or bypass valve in this case) on the pipe-work heading from the intercooler to the throttle body. Just one thing, with a blower if you say back off at 5000rpm the pressure doesn't just vent in a split second and give a little whoosh like on a turbo, it just keeps pumping out with a massive roar. It is REALLY loud. With this type of blower there are ways to get around this by activating the clutch on the blower to shut it off when the throttle is closed but I never found a way I was entirely happy with because when you'd stand on it again there was a slight delay before the blower clutch disengaged again and the power came back on. I had some ideas on things to try to get around this problem."The Stu likes this"
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Yes it was fun. I had the supercharger clutch wired up to a switch on the dash so I could literally turn the blower on mad-max style. The rest of the time I could just drive around normally and quietly and the blower would just free-spin under vacuum. When I flicked the switch I would get an instant extra 45-odd kw and a great whining sound from the engine and the exhaust note would almost double, it was great fun.
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Originally posted by Grunmk1 View PostJust one thing, with a blower if you say back off at 5000rpm the pressure doesn't just vent in a split second and give a little whoosh like on a turbo, it just keeps pumping out with a massive roar. It is REALLY loud. With this type of blower there are ways to get around this by activating the clutch on the blower to shut it off when the throttle is closed but I never found a way I was entirely happy with because when you'd stand on it again there was a slight delay before the blower clutch disengaged again and the power came back on. I had some ideas on things to try to get around this problem.'07 Touareg V6 TDI with air suspension
'98 Mk3 Cabriolet 2.0 8V
'99 A4 Quattro 1.8T
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Originally posted by Grunmk1 View PostYes it was fun. I had the supercharger clutch wired up to a switch on the dash so I could literally turn the blower on mad-max style. The rest of the time I could just drive around normally and quietly and the blower would just free-spin under vacuum. When I flicked the switch I would get an instant extra 45-odd kw and a great whining sound from the engine and the exhaust note would almost double, it was great fun.how long did it take you to do? did you move the alternator under it? i was thinking of doing the opposite...and having the sc under the alternator...so its at least a lilbit hidden...but i think im going to have to get a 2.0lt with a computer because the k-jet gets in the way massively! is there a small intercooler tucked up the front on the right?
"The Stu likes this"
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Originally posted by thestu View Postsweeeet! thanks for the advice. i'm trying to find some for sale now
happy hunting!
2010 Reflex Silver MK6 Golf GTI
Sunroof - MDI - Superchip - 19" VMR V710 - Kuhmo Ecsta SPT KU31 - VW Racing Panel Filter
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Originally posted by gldgti View Postwhy not exhaust the BOV through a hose back into the feed pipe into the blower?
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