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 type_one
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| posted on August 13th, 2003 at 08:39 AM |
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Shorrock Superchargers.
Can anyone tell me anything about these superchargers. Absolutely anything. What are they worth? How many were made? Are they better than say Judson?
I have seen few things on the net and wanted to see what you guys had to say. The huge thiing I would love to know is does anyone on here or anyone
on here know of someone who has one. I would love to meet them to discuss and see it.
Thanks all.
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HotRodMatt
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| posted on August 13th, 2003 at 08:43 AM |
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a bit of info here
http://www.flatfour.org/forum_files/vintagespeed.html#shorrock
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type_one
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| posted on August 13th, 2003 at 02:54 PM |
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Thanks. Anyone else got anything?
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 vw54
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| posted on August 13th, 2003 at 05:55 PM |
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I dont think theres any in Aussie... never saw anyone with one.
I have 2 Judsons.... both being used ...
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geodon
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| posted on August 13th, 2003 at 07:41 PM |
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I'm prob showing my age here but I have dim memories of them being used on early Holdens (grey engine variety eg FX FJ etc) & similar vintage
MG's eg TC's. Perhaps you could search there. Good hunting!!
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type_one
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| posted on August 15th, 2003 at 09:14 AM |
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So if I said I found one then everybody would be my friend? I thought they were rare but I at least thought somone would have seen one in Aust. Looks
like I am going to have a very rare accessory for my oval afterall.
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vw54
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| posted on August 15th, 2003 at 09:32 AM |
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Go for it make sure u get all the bits ... and make it work.
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type_one
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| posted on August 15th, 2003 at 12:20 PM |
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Complete except for the air filter on the carby. All the Manifolds etc appear to be there. It was all cruddy but has cleaned up a treat. I should try
and get some pics on here. Can't wait to get it on the oval motor. Actually can't wait to start work on restoring my oval again. Oh well.
All in good time.
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vw54
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| posted on August 15th, 2003 at 02:22 PM |
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I think theres a pic of one fitted to an engine in the How to hot rod VWs ??? or is it in the other one.... how to soup up a VW ???
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geodon
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| posted on August 15th, 2003 at 03:24 PM |
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I sifted thru my books & found a copy of "Making the Volkswagen Go" by Henry Elfrink dated 1960. There is a chapter on supercharging
featuring the Judson (naturally) and also the MAG Rootes type supercharger. The latter is a rotating lobe variety cf the sliding vane Judson. There
are photos of the MAG on a beetle as well as on a barn door transporter-(!) God knows why! The MAG looks very messy with the carb displaced way over
to the left of the eng bay.
If you like I can try to photo the book & send it- U2U me your e-mail.
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type_one
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| posted on August 15th, 2003 at 07:30 PM |
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Some pics
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type_one
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| posted on August 15th, 2003 at 07:32 PM |
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Picture
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type_one
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| posted on August 15th, 2003 at 07:32 PM |
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type_one
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| posted on August 15th, 2003 at 07:36 PM |
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type_one
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| posted on August 15th, 2003 at 07:36 PM |
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type82e
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| posted on August 16th, 2003 at 07:11 AM |
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great score!
where did you pick this up?
marcel
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whatnow
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| posted on August 16th, 2003 at 12:47 PM |
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wow thats a score and a half! nice. there was an article in an older volksworld about a car with one and it went into a little detail about the MAG.
sorry i don't have it handy at the moment.
edit. oops wrong type of supercharger.
[Edited on 16-8-2003 by whatnow]
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vw54
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| posted on August 16th, 2003 at 05:07 PM |
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OH NO an SU or is it a stromberg carby there a pain in the arse to try and get the jetting correct.
Oh well it looks complete when are you goping to bolt it up to the car ????
Looks like a offset rotor similar to the Judson.
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type_one
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| posted on August 16th, 2003 at 09:10 PM |
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Yes it is offset. The carby is a stromberg. Weird little thing. Has an oil reserve in the top of it.
As for fitting it too anything think that is a long way down the track. Still trying to get the body etc all done.
I scored it off a mother of a lady my old man works with. Her parents divorced years ago and the husband left all this vw stuff at the house. The
mother is moving and so sold heaps of stuff really cheap to some vw shop. Not sure who. She knew the supercharger was worth money and so kept it. The
lady my dad works for remembered he had a vw and asked him. Well he told me and the rest is history. The sad thing is a heap of stuff went to the tip
before she even thought about selling or giving it to me. All early 50 and 60's stuff too. It's a damm shame. Oh well I still scored so thta
is good. You never think these thing will happen to you.
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vw54
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| posted on August 17th, 2003 at 06:49 PM |
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I would be interested in seeing it,,,, bring it over to Vintage one day ... or To Boris Picnic day in September
You could set it up on the engine outside
the car... and make it run, thats what i did with my Judsons.
Do you have it yet??? have you figured out if all the parts are there ???
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helbus
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| posted on August 17th, 2003 at 07:05 PM |
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Gotta love forced induction. :bounce
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HotRodMatt
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| posted on August 17th, 2003 at 07:07 PM |
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"The carby is a stromberg. Weird little thing. Has an oil reserve in the top of it."
The oil reserve is so that some oil can go down the carby to lubricate the vanes. Usually a much thinner oil and with something added to make it
combustible so as not to foul the cylinders.
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vw54
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| posted on August 18th, 2003 at 07:41 AM |
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Matt
I don’t think that’s right but I could be wrong,,, as far as I know the oil reservoir acts as a damping device for the throttle piston, on the
carby. It only contains about 10 ml of oil, similar to a SU
Having not seen one in the flesh, but from the pics posted, I think that the lubrication for the blower comes from a direct line hooked up to the
engine oil pressure system.
See the pressure line on the back of the blower, I think this hooks up to the oil pressure switch area.
then again I could be wrong would love to see the set up and discuss its operation with you Type_one
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type_one
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| posted on August 18th, 2003 at 11:26 AM |
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Yes I think VW54 is correct. The oil on the Stromberg is something to do with the carby. There is a barrel type device in the carby that moves across
the throat and this oil seems to be to lubricate this. The line out of the supercharger is definitely hard wired into the oil pressure system. I have
read this on the internet. Apparently this is one reason why the Shorrock was better than the Judson etc. It was self oiling kind of. Less maintenance
anyway. It also has another good thing that I like. And that is the manifolds have a system that deals with the back pressure. So unlike the Judson
etc , where the back pressure apparently gets pushed back through the charger in the Shorrock it is dealt with outside the actual charger in the ends
of the manifold. Very Cool. Apparently like most good things though they were too expensive and the marketing was crap. The Inch Pincher apparently
used one on it if you believe what you read.
I would love to get my motor together and get it started on a bench. The motor is unfortunately jn so many piece I wouldn’t know where to
start. Got it all that way. Apparently it is all there though. This will be my first complete motor build. I want to do it right and there fore
probably slow. I can see it being sometime before getting it all together.
I will try and drop into Vintage one day with it. I would love to show it to you and get a more professional opinion on it.
Hey just in case I do come excuse my ignorance but what is your name VW54.
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Badassbug
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| posted on August 18th, 2003 at 04:56 PM |
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Trying to post an old picture of what is suppossed to be one of theses superchargers fitted. This is apparently a picture of one of Inch
Pincher's engine configurations.
Let's see if it works. Good find anyway! If the Inch Pincher used it, you should be on a winner!
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2443TT
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| posted on August 18th, 2003 at 06:42 PM |
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Looks kind of simular to the VW G40 and G60 G-ladder superchargers used on the corrado's in the UK.
I considered using a G-ladder briefly before going turbo.
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vw54
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| posted on August 18th, 2003 at 08:13 PM |
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Type _ one
Its on the bottom of all my posts.
The oiling system.... I dont think its better than the Judson system which has a seperate oiler fitted and a total loss system
If the Shorrock system uses Engine oil, it will also be a total loss system, but this will reduce the engine oil capacity over a period of time and
possibl;e quicker than the engine would use it under normal operatuing conditions.
There fore one would have to check the oil level very regularly and top up as required.
No doubt the feed pipe has some sort of calibrated valve so as only to drip feed lubricate to the mooving parts of the blower.
this would be similar to Judson.
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 BUGBOY
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| posted on August 18th, 2003 at 09:23 PM |
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Info
The shorrock vane-type supercharger breathed though a 1-1/2-inch stromberg CD carb.These superchargers were imported into the us by empi.
Some of the original Empi machines were blown to outstanding performace.
On a stock 1200 engine.
0 to 30 mph 5.4 sec or std 6.2 sec
0 to 60 mph 18 sec or std 27.5sec
top speed in 4th 89 mph. or std 73mph
One possible draw back to the Shorrock is the fact that a small amount of extra oil is injected with the fuel air mixture to lube the vanes.
Extra oil leads to hot burning mixture which can promote detonation and running on......
But this was never a problem if they where set up to there instructions.
They where distributed by
Allard Motor Co Ltd
51 Upper Richmond Road Putney SW 15 England
:thumb
Everything 36HP !
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vw54
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| posted on August 19th, 2003 at 07:18 AM |
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Nathan
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One possible draw back to the Shorrock is the fact that a small amount of extra oil is injected
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This is also the case with the Judson, however using thinner oil 10 grade also acts as an upper cylinder lubricant helping the engine run and perform.
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geodon
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| posted on August 19th, 2003 at 11:13 AM |
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I'm sorry if I'm coming in on the "half volley".
The oil situation is in 2 domains.
The blower need lube & this is provided by a drip feed from a reservour eg MAG & Judson like on some LPG converted cars that need upper cyl
lubricant.
The carb oil is not for lubrication. That big black nut on the Stromberg (if it's like the SU) is attached to a piston sitting in a a cyl filled
with light oil & it act as a damper when the cylinder moves up & down in response to vacuum when the throttle opens. The cyl is attached to a
tapered needle that opens the single jet in the carb. The more vac the more fuel is supplied. Remember the Solexes we are used to have a fixed
opening. This type of carb has a variable opening thus eliminating the need for various circuits for idle, acceleration, med power full power etc. I
personally like the elegant simplicity of SU carbs. They are lovely to tune when in multiples.
Type_one, sorry about our e-mail problems but watch that Stromberg. Unlike SU's which use a a big vacuum dashpot & a solid piston to get the
jet needle to lift (bulletproof reliability) the Strombergs use a diaphragm perhaps to make them more compact & they have a tendency to get ripped
as often as an Elizabethan bodice! If it's been standing around for years it may have become brittle. They were standard (- I don't know
why!) for many years on Triumph TR sports cars.
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