Superchargers

I'm thinking about getting a supercharger, do they still make a kit or is the only option a second hand judson kit?

so my questions;

whats the cheapest option for a supercharger?

what sort of performance boost can i expect from a stocko 1600cc engine?

aaaand

what are my options for carburation? i wanted (Before i got the supercharger bug) to run twin weber 44 IDF's. can i still run twin webers or is a single carb the only option?

sorry for the barrage of questions but i can't find some basic 'so you wanna supercharge your wolkswagen....' stuff

cheers

Why don't you go out to 9 Frederick St. at Cavan and talk to Peter or Adam about you dreams-get some real answers.

You could Use a DLI Blower on your car. Dick Landy Industries makes a full kit for a VW, although it is very expensive. I believe it uses a modified B&M 671 Mini blower. On a big motor it produces alot of power, but Im sure a 1600 would need drastic work to it to justify the money of the supercharger itself. As for induction I believe that they use a 4 barrel Holley carb or equivalent.
hope this helps.

there are cheaper options but u gotta hunt and dig them out as not many ppl do superchargers on VW's anymore, mainly turbo.
i've read about a few that have been superd but cant remember them. doa search and research.

cheers

i posted this question a while back and someone said a toyota t12 supercharger, so i loked into it and there about 3 hundred second hand off an older corolla i think but you need to fabricate your own mounts etc and i then decided that if blown was what i wanted turbo would be more practical. judsons came out of factory and would add performance to a stock 1300 to tabout 1600 performance but are hard to get hold im told

Hmm there's a few things to worry about here. Firstly I'd have to ask how strong is your 1600 cc engine.

If is more or less stock but in good working condition you can probably safely extract about another 50HP at 5000 RPM @ 7lb of boost with a supercharger, but you definantly don't want to do any more than that, because your stock cast pistions, and heads probably won't take it too well for very long.

You'll need want a decent exhaust system as well, something merged ideally in a 1 3/4".

I thought about supercharging before going the turbo route, but here's what I would have used if I used a carb with a supercharger on my engine.

1 x 12A toyota supercharger from a 4AGZE engine $300-$350
1 x MSD6BTM 6 Series MSD ignition, with 5000 RPM rev limit and variable boost retard. Estimated $700.00.
1 x 009 distributer (the vacuum one will not work under boost conditions, use the MSD for boost retard) $100?
1 x carburator like a webber 40 idf side draft (28mm venturies) $300.00
1 x custom fabricated manifold to join the carb to the supercharger, and the supercharger to the factory manifold.
1 x high volume 3.5lb fuel pump $30
1 x modified oil system to run oil to the supercharger.

Yes you could probably do away with the MSD, but this would mean that your igniton would be too retarded at idle and down low, which would make the car a dog to drive. Better you be able to drive and tune it like a normal car, but have adjustable boost retard to stop pinging.

The oil system is the next hurdle, as you will need to get oil outside of the engine to allow lubrication for the supercharger. Then there's the drama of engineering a return line.

Manifold fabrication is always good fun as well. You'd probably end up having to pay someone to make something up out of aluminium that uses the engine block as part of the mounting system to hold the supercharger as well.

It would be an interesting project to do. If you were to undertake it, I'd suggest getting hold of someone's old and dead motor to do all your pre-fitting to. That way you can drop the engine off to the aluminium welder that will make your manifolds and supercharger mount without having to take your car of the road.

I think you'd find the fabrication costs would probably come close to that of all the parts you'd require. Generally most projects like these cost twice that you think it does.

One thing I can say for sure is that you don't want to approach the project looking to do it cheaply. If you do it either won't work out properly, or may turn into a real disaster resulting in an engine blow or something.

Hope this helps,

Cheers,

Ian Swinkels.

mmm food for thought. i found what i was looking for (The judson register found here) and the december issuue of hot VW's has an article on rebuilding a judson supercharger. they had an external oiler (That you filled seperately) and were (in theory) bolt on. But the info on newer superchargers is mucho appreciated.

it's a good working order stock engine.

replacing the pistons and heads is on the cards (and most likely to happen before i worry about forced induction, be it turbo or supercharger). not to forget a possible aluminium case.

as you say, better to do it once properly than waste alot of money.

exhaust wise i am still reasearching, what i am trying to do is get a twin muffler setup that uses the original exhaust cutouts.

still researching, no point in jumping into it because of insurance. am more likely to try an build a strong base (And decent powerd) NA engine to begin with and then look towards turbo or suprcharger (The more i research the better a turbo looks, but the judson is just so old-school)

Greedy51 on this forum had a 1600 kombi at Valla that was blown. He did all the work himself I think and he was rapt in it. Contact him and he will tell you how he went about it. I'm heading down the low blown road when I get around to reco'n me 1.6powerplant.

Just one more thing about the Judson supercharger. I can't remember where I read it, but I've read somewhere that their is a limitation as to how much boost you can run with them.

Part of the limitation related to the oil mist that ends up in the air charge due to the way the judson lubricates itself.

There is another option though. Volkswagen in europe released a two engines with superchargers called G-Ladders. The models are a G40 and a G60 which is the larger of the two.

They are worth a look, because after all, their made by volkswagen!

Cheers,

Ian.