911 Cooling Shrouds - Improving Internal Air Distribution

[eugene]

Hi wally. No this are not my engine. Is a picture Klaus has send to me to help me with the shroud installation. He did not have the english instructions made jet when i received the shroud. I dont know a lot abouth his heads other that that can be seen from the pictures from his catalog. But he claims he is near the 100hp/l. I also noticed the fins on the top off the heads in this picture. Above the plug. They seems longer that the fins from some other pictures of his heads. Probably machined from a small block of alu and welded on top for strenght. He also uses the additional fin like other german tuners. But he don't use the GB plug position and he wrote: ''Because of to much differences between the compared engines, I could not
yet find out till today, if there is a gain of torque or power output using the GB heads. But they will get a crack to both sides of the spark hole after some
time.'' I think his chambers are reshaped. At least as much i can judge from the pictures.
I have the 3rd version of his shroud but i did not buy the RSK. I was considering it but he said that there is too much work on the heads to carry it by myself and had not any instruction written couse no one have bought the RSK in order to instal it be himself and that it will interfer with ordinary aftermarket exhaust like BAS,... He said the RSK is working great and he is using it for engines from 2.4 and up and really make a difference when driveing top speed for long time.
The pieces i have brought from him are indeed top quality and he was also kind to answer to all (dumb) questions a made.

I will take some better pictures of the shroud when i will home. I dont have any on the comp.
The engine will be a 100x71 with the NOS mahle nicasil i have posted pictures on the STF some time ago. I have Thorsten lifters -thanks for the link BTW. AMC new castings reworked by me with 44x38 valves and some moods to the chamber. I don't know for the cam yet I have a cheap USA 298° but i would like a split duration-lift. I would buy one from klaus but are crazy expensive and he is not selling cams alone. Rammele had some split cams listed if i remember correctly, but not any more and is difficult to get anything from him. I'm not fan of the Shlecher- no enough lift. And sure don't want to buy the whole cam package for a RAT cam- but would love one. So any options to get a split duration-lift from europe? Do you know anyone who will grind a custom one?

Sorry for the off topic. I will pay off wit some pictures when i get to my shroud.

Best Regards

[Wally]

Thats excellent Eugene!
I thought I recognised his heads from your pic
The measurements he takes with his heads (which you mentioned) do concur with his cataloque writings and website

I remember (yeah, I know..) that Wilke Tuning from germany used to make and advertise split-duration cams. Not sure if they still exist tho. Site hasn't been updated for ages...
http://www.wilke-motorenbau.de/index.htm

But the most available are the split duration/lift cams from webcam and they also make you a custom split-duration/lift at a very small extra cost. You can contact them directly or order a custom one throught aircooled.net.
My turbo engine will use a custom webcam with Thorsten lifters. I have good faith that combo will live a long life, but as always, no guarentees...

Greets,
Walter

[KAFUR1]

please I 2nd that I am tryn to find the best 911 shroud for my turbo motor ....

[sved]

Yes please I 3rd that

[Sandeep]

I'll have a look and see if I can find the pictures this weekend.

I'm looking into a horizontal shroud now as I need to fit the intercooler into the engine bay.

I will more than likely make my own as I can't justify spending another $1200 CDN for one

Sandeep

[sved]

Is that for one like wally has?

[Scotts73SB]

Isnt that the same shroud and set up thats on a Corvair? (The axial or horizontal ones your talking about)
I wouldnt think those are too expensive I know around here theres tons of em in barns sitting slowly sinking into the ground.

[Sandeep]

Similar to a corvair shroud, but using the porsche fan/alt that I already have.

Wally is running a horizontal shroud by Reichert Tuning but those shrouds are very difficult to get. So I will have to improvise and see how far my 'glassing' skills get me

sandeep

[sved]

I was thinking of doing the same thing! But was wondering how to go about it.Keep me posted on how I'ts going. Dave

[chug_A_bug]

Hey Sandeep.. if you need help I'm and Ace will fiberglass... let me know

Chris.

[Typ Vier]

http://azickert.myphotoalbum.com/vie...02&id=kif_1683

[Sandeep]

Thanks for the link ! The first picture is what I'm after ... I want the stealth look with everything in the engine compartment.

Who's custom shroud is in the 2nd and 3rd pics ? The fab work looks excellent.

Sandeep

[Wally]

Originally Posted by Sandeep

Thanks for the link ! The first picture is what I'm after ... .

Sandeep

Actually, I remember that engine: it was a 2366cc type 4 with about 324hp in a german 1302 convertible which was sold several years ago with a broken tranny.
Engine had elaborate oiling with external belt driven pump with a schleicher 324/106LC cam and did 240 km/h or so on the Autobahn.

Its the turbo engine where I had my first ideas from about horizontal cooling and turbocharging/intercooling

[Typ Vier]

Hi all,

Sorry, stuffed up the pictures and the reply hence the gallery is visible, thought i deleted it.

Yes you are right, this engine did have a 324 Schleicher cam but when the transmission died at 240 Km/h it had different engine components fitted.
I cannot remember which Web cam it was but the duration was lower since the Schleicher allowed too much of the good stuff out of the exhaust. We drove the first engine one night down a built up road and every time I shifted, flames of up to 2 metres came out of the exhaust and illuminated the houses
The first engine was driven one Summer and then taken apart, bigger valves in new heads (50x40), compresion lowered to 7.5 and web cam installed. It was a lot more user friendly and since the boost was adjustable up to 1.5 Bar, the HP was even higher (obviously) however, it was never dynoed with the new engine. Lots of stories to tell on that one
Top speed was quite a bit higher than 240 but when trying to attempt it, you almost needed 2 lanes on the Autobahn.

@ Sandeep, made both fan setups myself, the first one with the Turbo used to be my old 2.0L for which I built the horizontal fan for. My Dad made the moulds from a cut off Kerscher shroud originally and the front plate was a 5mm thick steel plate galvanised. The pulleys came from a Peugeot 304 which had the alternator fitted to the side of the engine.
When my mates car got featured in an WOB magazine, I got a mention but on the Fan setup they said it is a Riechert which pissed me off a little.
The one you see 2. and 3. in the gallery is my latest one using a 10 mm marine grade Aluminium plate, pulleys are custom made using double roller bearings and shroud is aluminium which is now TIG welded together.
Easy to do, only very time consuming, it takes a lot longer for the aluminium shrouds due to having to cut out all panels and shape them.
http://azickert.myphotoalbum.com/vie...03&id=dscf8860
In order to avoid confusion I put my name on it in a similar configuration as the original manufacturer did ;-)
Cheers

[Wally]

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Cool story and very beautifully done horizontal cooling system!