| [ Total Views: 5794 | Total Replies: 6 | Thread Id: 107943 ] |
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 hrastovica
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 posted on December 19th, 2014 at 12:53 AM |
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Joe Blow Supercharger Kits
Looks like a cool set up, just wondering how well it actually works...
Anyone installed one of these... curious how well it works, what engine are you running it on, what kind of HP you are getting, reliability etc?
Click Here.
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T-34
A.k.a.: Mick
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| posted on December 19th, 2014 at 08:00 PM |
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I've installed a few.  
I currently have over 10,000kms on the kit in my bus - it's still running one of my earlier prototypes. It pulls 83 hp at about 7psi and revs to
about 5250 on the stock cam. My engine is a bone stock 1600 with 1.25:1 ratio rockers and a vintage speed exhaust. Admittedly not the best choice in
exhaust but a little better breathing than stock. Gains would be a little higher with a decent merged system. Still, it's not a bad improvement out
of a 1600 when you consider a stock Type 4 2 litre is only 70 hp.
More power is obviously simply a case of increasing boost by running a smaller blower pulley but the kit in its stock form at 7psi is designed to be
reliable and not require any wizardry with the engine setup. To go higher it is advisable to fit boost referenced ignition control to retard the
ignition under boost. By doing this you can safely increase boost up to 10-12 psi whilst still retaining reliability. This is not possible with the
stock dizzy setup - a recurved 009.
Service intervals are more frequent, but this is the same for all performance engines - drive them hard and you should be looking to adjust valves and
change oil more often. Drive it like an old lady and there's no real difference with a stock engine it just feels like it has a much more sensitive
throttle.
I recommend going full flow and fitting an external cooler and filter - that's a no-brainer really - and if you run a heavy bus you would probably
benefit from a heavy duty clutch - in a bug I recon you would just get away with stock - unless you are into launching it all of the time in which
case a stage 1 / 2 is recommended. Fitting a decent breather system is an absolute must.
Before and after dyno printouts are somewhere on the site. The power gains are very noticeable - instant low down torque which allows you to
accelerate from low speeds even in high gears, or drop it down a cog and floor it and hear the whine of the supercharger in your ears as things really
pick up. Top speed is extended too.
If you're ever over here in sunny RADelaide I can take you for a spin in the bus. Also just recently shipped one to Melburg too, so you might even
get to take a ride in one a little closer to home.
Happy to answer any questions you might have so feel free to fire away.
Regards
Mick.
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 Bizarre
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The artist formerly known as blue74l
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| posted on December 20th, 2014 at 02:36 PM |
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83 HP is damn healthy
If / when I go back air cooled i will look into one of these
Futue te ipsum!!!
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Euro_67
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| posted on December 21st, 2014 at 12:03 PM |
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| Quote: | Originally
posted by Bizarre
83 HP is damn healthy
If / when I go back air cooled i will look into one of these
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Barry, when did you abandon air-cooled?
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pete wood
A.k.a.: figure itout
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| posted on December 26th, 2014 at 10:07 AM |
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Anything involving a draw-through carby system you're going to be pretty limited. Any more than about 7psi like mentioned, you really want
intercooling of some sort. With a draw-through system, that means water/alky injection (not fantastic) or nitrous (illegal on a street car).
I've just recently thrown in the idea of that supercharger on a street car. I wanted 10psi+, EFI and an intercooler. I've watched another local guy
do it. Fitting all that under a stock bootlid is a nightmare.
If on the other hand, you were to use the stock carb and blowthrough like lots of the guys in the US are doing, you could use some sort of water-air
intercooler (very efficient). It might not all fit under the bonnet, but the engine would be much safer above 7psi.
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modnrod
Fahrvergnugen
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| posted on December 26th, 2014 at 09:55 PM |
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I can still remember draw-through rotaries with no intercooler and 25+ boost, they even seemed to idle strangely.
I've ridden a 25psi draw-through Kwak Z1 through traffic lights, and it was smoother than my NA flatslide bike.
It may not be technically or theoretically ideal, but it's all in the tuning I spose. Not to say EFI won't be better or worse, but carb/boost works
OK.
I'd love a kit on mine, but over here it simply won't happen.
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pete wood
A.k.a.: figure itout
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| posted on December 26th, 2014 at 10:15 PM |
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Well of course you can do it. The question is, "how long will it all hold together?"
And really, comparing a light crotch rocket to a heavy street car or bus is apples and oranges. If it was a drag car, you could strip it out, run it
on alcohol and not even both with a fan or shroud, but in the real world... werl. I've got mates who've run big boost on stockers without an
intercooler. It never ended well.
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