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Today was and interesting day I decided to change my fuel filter location. Its now back behind the engine shroud easy to get at .As long as i was doing i replaced all fuel lines from fuel filter to carb.Called parts store went for ride .When i got there parts store people came out to look at car.There happens to be a old time vw mechanic who works there. That looks like some type of a turbo charger he said.I said what! Possibley home made.Sitting in the middle of and on top of the engine shroud which i thought was some type of a air cleaner is a 4 inch long 2 inch high stainless ventless steel box connected to the carb with a rubber raidator hose. I am not a mechanic but i am learning .Could this guy be right?Tomorrow i am going to remove it to see if it gets air from the bottom that sits on the shroud.
Could it be an old Judson?
Allen Caron
VW based 53MGTD - "MoneyPenny"
"If one thing matters, everything matters" - from the book The ShackSpeaking of supercharging, does anybody have any experience with:
Ed, you are always grousing about your lo-pow single port ????cc engine. Why not test one of these things and give a report?Took stainless steel box off top of engine shoud. There is a hole in shroud where box is connected to it with a filter inside box. The filter appears to have lots of steal coils up and down and is triangler . I hope i nevar have to replace .I think i would have a hard time finding one.I think its some kind of air cleaner I don’t know why its getting the air from shroud
Roy, I used to have one [electric ] supercharger on a Camaro, i paid $100.00 for it and was disapointed
…. I still have the Camaro with out it, all they are is a bilge blower, and are used on a small engine and must be fuel injected. DanGreg – you should remove that box and plug up the hole in the top of the shroud with some metal (may be able to pop rivet something on there). While you may be getting slightly more air blown into the carb, you are losing cooling air out through that hole instead of it blowing down the driver’s side of the shroud over the oil cooler and #3 cylinder as it should. Your engine may be running really lean too unless someone rejetted it. Lean + loss of cooling air over the oil cooler = really hot engine = bad.
Air enters the fan from the center and blows out along the periphery. No air should be entering that opening in the top of the shroud, just losing cooling air out that opening. There should be positive pressure in that area.
mrlmd2012-09-12 20:11:24I’m with MRLMD on this one!
Paul Mossberg
Former Owner of a 1981 Classic Roadsters Ltd. Duchess (VW)
2005 Intermeccanica RoadsterIf you own a TDr and are not in the Registry, please go to https://tdreplica.com/forums/topic/mg-td-replica-registry/ and register (you need to copy and paste the link)
It appears that someone tried to use the cooling fan to boost the air pressure ahead of the carb, a form of supercharger. Get rid of the box, it is robbing the cooling air. I had a Berrie mini taxi with a Judson Supercharge on a 2400cc VW. it dyno tested out at about 300HP in the 80’s. car only weighed 750 lbs. Did great at the 1/8 mile Drag strip, had weely bars and needed them. Those were the days. “GET RID OF THE BOX”!!, IT WILL COOK YOUR MOTOR.
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