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Model specific boards => Golf mk2 => Topic started by: Si on 30 December 2005, 21:31

Title: Supercharged 'Driver'
Post by: Si on 30 December 2005, 21:31

Ok, sounds crazy but ive been toying with the idea for a while now.
If anybody has ever looked at a series 25 1.6 Camper Van engine then they may know what im gonna talk about?!...
They have got a Heater blower attached to the Alternator, (looks like Supercharger). Anyway, it bolts to the Alternator fixing bolts and the middle shaft drives the blower / fan.
Now, ive been thinking i could fit this blower to my 1.6 Driver Alternator and direct the air flow to airfilter? trouble is the Alternator shaft on Golf isnt long enough as it has a spacer to step pulley away from Timing belt cover.
Questions i need answering are---

1) What VW Alternator has a very long shaft that could be used?
2) If i got it to fit, it would be blowing a huge ammount of air to intake on idle, aswell as driving, how could i create a valve to shut off air on idle?
3) It would underfuel loads, how could i get more fuel to Carb to compensate air / fuel ratio?
4) Would i need non-return valves on fuel lines to stop blow back?

I will take photos tommorow. :smiley:

Title: Re: Supercharged 'Driver'
Post by: Si on 31 December 2005, 17:50

Ok, me and the old man have been rattling our heads together....
Worked out everything i need to do it except an Alternator with a shaft long enough (lot of work fabricating one).

Any help?  :rolleyes:

Title: Re: Supercharged 'Driver'
Post by: The Hoax on 31 December 2005, 18:16

Si

I would think that you will be wasting your time as I can't see a heater blower producing anything like enough air to increase power.

Sorry but just my honest opinion.

Cheers

Title: Re: Supercharged 'Driver'
Post by: Si on 31 December 2005, 18:23

Wound it up using wizz gun on compressor at 2000rpm, we measured the pressure at 4 psi! AT 2000RPM!!!!
The gun wouldnt fire up anymore revs so couldnt see what it measured at over 2000! but i would imagine it would be more than enough!! Too much if anything!  :rolleyes:

Title: Re: Supercharged 'Driver'
Post by: topher on 02 January 2006, 12:36

interesting idea, but how are you going to stop it blowing up the first time you change gear.. there will be no fuel going into the carb for a moment while the blower keeps pumping.

Title: Re: Supercharged 'Driver'
Post by: Si on 02 January 2006, 16:28

Need to remake a pressure release valve like a waste gate as such.
Also, ive woked out and make a valve operated by choke cable inside car to open / close valve so on idle the valve is closed (blows air into engine bay) and when moving i can open valve (pushing air to intake)!
Still having trouble with it underfuelling and need an alternator with longer shaft.?!  :huh:

Title: Re: Supercharged 'Driver'
Post by: takethefifth on 02 January 2006, 17:00

You're a crazy crazy man! But damn i wish you luck!  :grin:

Title: Re: Supercharged 'Driver'
Post by: Devon Joe on 02 January 2006, 19:41

Or maybe try four of those yeBay 'electric superchargers +250 hp' onto home-made throttle bodies??

Only kiddin!!  :drool:

Title: Re: Supercharged 'Driver'
Post by: Si on 03 January 2006, 19:56

Hey, ill try most things once!!  :grin:

Title: Re: Supercharged 'Driver'
Post by: Chugadub on 03 January 2006, 22:06

Quote from: tt5th on 02 January 2006, 17:00

You're a crazy crazy man! But damn i wish you luck! :grin:

^ like he said!

but im in bristol too, if u want a hand messing about or summat just gimme a shout - sounds like a laugh!
 :smiley:

Title: Re: Supercharged 'Driver'
Post by: Dizzie on 04 January 2006, 01:09

what are you doing about the compression ratio?

Title: Re: Supercharged 'Driver'
Post by: Si on 05 January 2006, 11:32

Compression is standard. (dont know how long till she goes boom!!)  :undecided:
If i get to work properly then i wont run big boost, prob only limit it to 4 psi or sumthing?!  :smiley:

Title: Re: Supercharged 'Driver'
Post by: Si on 05 January 2006, 11:33

Chugadub, where in Bristol you from?
im bout 9 miles from Bristol centre, between Weston-super-mare and Bristol (A370).