911 Cooling Shrouds - Improving Internal Air Distribution

[sved]

What would you charge for a system like that? It looks great I was going to do a 911 cooling system, but with the uneven cooling with the shroud I have I'm not going to do it now. I love the system wally has. But yours looks great aswell, If you would sell just the shroulding I would be happy with that,Wally myself and sandeep all have turbo type4s. And are on the quest for more power, better cooling. More power is just a given. Wally already has the cooling. Myself and sandeep don't. But I should only speak for myself. I want this next engine to have 225Hp at the wheel. And I want to put an intercooler in the engine bay. It will be going into a 71 super. Dave

[Typ Vier]

Hi, sorry not enough time to make an sell them but feel free to contact me if you need assistance making one, its not that hard.
I've sent you a private message.


http://azickert.myphotoalbum.com/alb...umName=album03

Cheers

[Sandeep]

Thanks for the great pics and engine details Andreas. I would have thought that the horizontal fan would have pulled enough air through the intercooler to not require the additional fan ?

This engine was also my inspiration when I decided to turbo my t4 : )

Sandeep

[Typ Vier]

You would think so in a completely sealed engine compartment but this was not the case here, all engine lid sealing strips were removed and there was a gap between the lid and the body. The intercooler did not sit directly on top of the fan as you can see and there was also an opening behind the number plate where the Porsche fan could get air in and possibly bypass the intercoler. Instead of relying on the Porsche fan alone, my mate Martin (the previous owner of the 1302 Cab) decided to fit the additional electric fan.
It may not be needed but what the hell, it made the whole installation even more complicated looking ;-)
Shame he sold the car...He started his own Tuning company (MG Racing, a few reviews from his Mk 5 GTI with 350HP are somewhere on the net) and did a lot of work for Oettinger in Friedrichsdorf. When it all got too much last July, he decided to call it quits and now works for a tuning company somewhere around lake constance. He still says he should have kept the beetle ...

[Wally]

This is the shallower Riechert housing, which is supported front and aft. Found this pic again by coinciance ;-)

[Typ Vier]

Thats why Riechert made his own fan ring, no brackets needed underneath.
The factory Porsche alternator is better suited for a horizontal conversion compared to the aftermarket Ahnendorp fan. The attachment/bracket would consist of a ring with the same diameter and the six holes as the alternator has in the rear. this ring is then welded onto the 4 legs that bolt up to the engine block, nothing is in the way of airflow in this configuration.
The Ahnendorp one is using an ISKRA Golf style alternator with x4 5mm bolts and a stepped housing, therefore almost impossible to adapt the previously mentioned. thats why I welded some brackets to the rear as well as to the left and right
I have thought of this for a while now and gonna change the attachment to a front and rear support only. Should not be too hard to do, a machined piece of aluminium with the radius of the fan housing bolted up to the pulley bracket and welded onto the ring should take care of that.

Looks like the Riechert fan is a little higher than my one. Have you measured the top edge of a fan blade (lets say if it is pointing to the left) to the top of the engine block?
Cheers

[sved]

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]

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]

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:


And some measurements:




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.

[Sandeep]

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

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.







So who is volunteering to make the first prototype 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]

Thanks Xellex for those pics. Pictures with measurments 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]

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.



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]

Originally Posted by Xellex

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! )

[Sandeep]

Originally Posted by Wally

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

Its all good Wally

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

Sandeep

[sved]

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