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-   -   911 Cooling Shrouds - Improving Internal Air Distribution (https://www.germanlook.net/forums/showthread.php?t=5973)

sved January 9th 2010 17:27

Thanks for the great pics I will be calling you. Wally that last pic was what I was going to ask! what is the height from the block to the bottom ring. To get a base from where to start, thanks again for the great Info, and pics ( keep them comming) Dave

Wally January 9th 2010 17:44

As an excellent craftsman, I knew you only needed half a word to understand what I was trying to say/let you see ;-)

Haven't measured as you mentioned, but I'll see what is possible when the engine gets out for whatever reason during this season. Which is quite likely seeing the power she has now; Clutch would be my first concern (again..).

Xellex January 10th 2010 08:33

I took some pics that I thought might help. My engine sits like that for the moment so it's probably easier than Wally taking his off :P

Front/rear mounts:
http://i260.photobucket.com/albums/i...2.jpg~originalhttp://i260.photobucket.com/albums/i...3.jpg~originalhttp://i260.photobucket.com/albums/i...4.jpg~original

And some measurements:
http://i260.photobucket.com/albums/i...5.jpg~originalhttp://i260.photobucket.com/albums/i...6.jpg~original

http://i260.photobucket.com/albums/i...7.jpg~originalhttp://i260.photobucket.com/albums/i...8.jpg~original

Hope this will help. If I can be of any assistance, please let me know.

Oh, and Wally, I wanted to ask you: I recieved this part allong with the riechert kit, but I don't know what it's for / where to mount it. But probably there is a reason that guy sent it to me from germany :) Maybe you know... it's the black one next to the pulley.
http://i260.photobucket.com/albums/i...8.jpg~original

Sandeep January 10th 2010 11:47

It's funny how this thread has morphed from upright 911 shrouds to horizontal cooling, I guess you can thank the "Mythbuster", and wanting to put an intercooler into the engine bay for that :clap:

Here's a couple more pictures I found while surfing, hope the owner of this setup does not mind, but it looks like the original 911 ring is being used.


http://i10.photobucket.com/albums/a1...2.jpg~original

http://i10.photobucket.com/albums/a1...1.jpg~original


So who is volunteering to make the first prototype :lmao: I'll make my drawings / files / templates available once my version has been built and tested. I'll be using the original 911 ring / alt that I have, only because I already have it.

Sandeep

sved January 10th 2010 13:12

horizontal cooling
 
Thanks Xellex for those pics. Pictures with measurments:D I too will be using the 911 ring, (cause I have it) My tig welding skills will be put to the test. Sandeep I can't draw a stick man so I will make as I go. The one thing that puzzels me is the tighting of the belt. Some systems the idler rollers are on an angle others are straight? Anyway thanks for the updated info and pics.Dave

Sandeep January 10th 2010 13:47

Here's a pic of the top left area of my ring .... it already has mounting holes (for the stock coil I will assume). This will make the fabrication of a rear mount trivial.

http://i10.photobucket.com/albums/a1...7.jpg~original

The front mount / idler pulley mount will take more thought, as the angles of the pulleys are set by the diameter of the crank pulley, and the final location of the fan ring. I am using my FAT pulley as it has already has the 36-1 trigger wheel mounted for my ignition system.

I'm going to mock things up with MDF wood and then have a chat with some machinists at our next club meeting.

Sandeep

Wally January 10th 2010 13:51

Quote:

Originally Posted by Xellex (Post 73256)
Oh, and Wally, I wanted to ask you: I recieved this part allong with the riechert kit, but I don't know what it's for / where to mount it.

Never seen that exact one before, but I recognize the bolt spacing and the extra thickness layered on the bottom two holes: its probably mounted onto the original case holes where the original rear engine support bar is mounted.
Just above/besides the oil pump.

My set-up sat on an original converted 914 2.0 engine and had a piece of engine tin around the crank pulley, probably to resemble the type 1 surround tin around the pulley for engine bay air sealing.

So I strongly think it was meant to mount onto some extra tinware and seal the engine bay from hot air radiating from the exhaust.

Hope you understand what I am trying to say..

Greets,
Walter

PS: sorry Sandeep to deviate from the original topic (NOT! :D)

Sandeep January 10th 2010 13:58

Quote:

Originally Posted by Wally (Post 73263)
PS: sorry Sandeep to deviate from the original topic (NOT! :D)

Its all good Wally

I'm assuming the belt is tightened like all 911 systems, by using shims under the fan pulley.

Sandeep

sved January 10th 2010 14:18

horizontal cooling
 
Just thinking, from the pics you posted sandeep. I could leave the oilcooler in the factory spot and make shrouding for it? Dave

Typ Vier January 13th 2010 04:05

Great pictures xellex, just measured it and found 145 mm from the top of the fan blade down to the top of the engine block. Have included the picture in the gallery below. Also included some pictures of my Dads recent (pretty crude riveted) setup :) His setup relies solely on a strap holding the fan in place, It is rock solid. Note the label at the carb :lmao:

http://azickert.myphotoalbum.com/alb...umName=album02

Cheers

CLKWRK January 13th 2010 11:31

Hey Sandeep,
Instead of the 911 shim system for belt tightening, I would put a spring loaded tensioner on one of the 90deg pulleys, that way there is less chance of throwing a belt when the belt stretches.
I believe corvairs peeps used this mod too
Bry

Typ Vier January 13th 2010 17:37

Never had a problem with the tightening of the belt nor with belt throwing...
You just have to make sure the correct length belt is used and it is tightened.

drgouk January 27th 2010 04:47

Nice job you've done on your horizontal shroud Andreas. Will have to come and have a look one day soon:)

sved March 17th 2010 14:37

Cooling
 
Typ Vier What has happened to the link to your pics they are very helpful.:confused:Dave

Typ Vier March 22nd 2010 03:30

Hi Sved, PM me and I'll send you what you need.
Got a bit busy over summer with kids and outdoors but winter's on the door step. Beetle should progress nicely, want to have it finished this time next year.

Typ Vier March 22nd 2010 04:00

2 Attachment(s)
The gaps are designed right into the shrouds to make them cool better.... :lmao:



Just kidding, they are welded up now, new pics will follow.
Cheers

evilC March 22nd 2010 07:25

Nice looking installation Andeas.

I have a querey that is open to all to respond:
In a horizontal installation like Andeas' the belt twists 90deg between bottom pully and the idler pulleys, then it twists 90deg again between the idler pulley and the fan. If the idler pully were set at an angle then the belt would not be required to twist as much. The idler pully would however, be required to be tangential to the bottom pulley (and the fan?) so that would restict its location to <45 deg (the ideal angle) but I would expect that any reduction in twist would have been beneficial for belt and idler bearing longevity. Just a thought?

Clive

Typ Vier March 22nd 2010 18:59

Cheers Clive,

Understand your point and you are probably right but that would mean you would have to space the idler pulleys further apart. There could be clearance issues with the distributor, possibly requires a larger bottom pulley and of course a longer belt. Larger idler pulleys could be beneficial. Would be interresting to see how it works, although probably not as compact. But then again, getting 20.000 Km's out of the belt as it is in this configuration is good enough for me ;)

evilC March 23rd 2010 06:45

I agree it would not look so elegant and certainly the wider idler pulleys might be in the way since to get any real improvement they would have to be engine width apart? Alternatively, you could substitute a bevel gear for the engine
pulley and then you would only need a pair of horizontal pulleys.......................... And then onto theoretical Physics..

vdubzack March 30th 2010 08:00

This is what Chris at Tangerine Racing is doing with his version.

http://www.tangerineracing.com/whats_new.htm

His product are of the finest quality and just a good person to do business with.

Wally March 30th 2010 10:42

Quote:

Originally Posted by vdubzack (Post 75137)
This is what Chris at Tangerine Racing is doing with his version.

http://www.tangerineracing.com/whats_new.htm

His product are of the finest quality and just a good person to do business with.

Unfortunately, that alternator mount will not fit any bug, T1 bus or Ghia application...

Sandeep March 30th 2010 10:59

I've been following his build on 914club.com an do like the idea of an aluminum shroud.

Sandeep

Oldskool1303 May 24th 2010 22:43

Typ Vier how long did it take you to develop that shroud?
It looks amazing!!

Typ Vier May 25th 2010 04:36

Oldskool. made my first one with steel plate, steel pulleys and fibreglass shrouds in '91. My dad had his a year earlier so it basically evolved from what he has started.
This one does not really take that long to do, its just time is precious at the moment. I'd start a little production run if I had the time.

Bugged June 23rd 2011 01:21

Hey did you find time yet? ^^^ ;)

piledriver June 23rd 2011 09:22

Corvair or Reichert-style horizontal fan setups are perfectly possible on T1 etc, Chris' 914 setup has the alternator THERE as the SCCA rules require it to be in the stock 914 location.
(same SCCA rules say nothing on where the cooling fan goes/works or even exists, most of the F-prod 914 setups use ram air via flex sewer pipes from the headlight holes.)
LA Performance in the UK still makes T4 upright fan housing using teh 911 fan, a T1 shouldn't be impossible or even any harder.
(I started fabbing a corvair-fan one myself awhile back, then got sidetracked... now I'm considering running a T1 fan upside down//backwards to suck air from the bottom 8-0 )

super71beetle December 24th 2011 06:53

Quote:

Originally Posted by Sandeep (Post 46928)
Here are some pics of the mods ...

http://i10.photobucket.com/albums/a1...2.jpg~original

http://i10.photobucket.com/albums/a1...4.jpg~original

http://i10.photobucket.com/albums/a1...5.jpg~original

The shroud looks pretty rough after all of the mods, so I'll fix the holes with fibreglass and then get it repainted.

Sandeep

Is there anyway i can get access to, or somehow see the pics throughout this thread? I want to see them so badly!!
(I just bought my first type 4 and it's got a FAT setup)

KAFUR1 December 26th 2011 00:14

Any headway on these shrouds?

sved February 20th 2012 02:45

The making of a shroud/cooling system
 
http://i275.photobucket.com/albums/j...5.jpg~original
http://i275.photobucket.com/albums/j...1.jpg~original
http://i275.photobucket.com/albums/j...f.jpg~original
http://i275.photobucket.com/albums/j...5.jpg~original
http://i275.photobucket.com/albums/j...e.jpg~original
http://i275.photobucket.com/albums/j...0.jpg~original
http://i275.photobucket.com/albums/j...4.jpg~original
It can be made just takes some time!!!
will post more pics as I get other pieces done. Dave

Tony Z April 19th 2012 10:10

has anyone made any more progress?


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