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cmpski's Avatar
 
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POLO powered 4 cylinder 911 motor in a 912

http://www.youtube.com/watch?v=JyWMnx1yxvc

POLO engine 912 almost done.


Last edited by cmpski; 08-16-2011 at 08:06 AM.. Reason: link added
Old 08-14-2011, 07:42 PM
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POLO engine 912 almost done.


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1971 chassis, 2.7RS spec MFI engine, suspension mods, lightened

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Old 08-14-2011, 07:49 PM
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I just found out what a Polo engine was while I was at the Emory Parts Obsolete weekend....Yeesh, throw enough time, money and technical know how at a problem and it's solved. There was a 356 being built at the Emory's with a Polo in it, they figured it would put out about 200 HP, that in a car that weighs 1800 Lbs......! Cheers
Old 08-15-2011, 06:49 AM
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2 pictures of the block
Old 08-15-2011, 03:38 PM
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Old 08-15-2011, 03:40 PM
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Cubic mega bucks.......you can do the same thing with a Type IV VW engine, add a shroud and be ahead at less than 1/2 the cost and more hp.

Google Jake Raby......he's a hard act to deal with but knows his stuff.
Old 08-15-2011, 03:47 PM
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Jake does great stuff so does Dean. We all do what seems right to us. One of the things I've enjoyed over the years is how many ways these cars can be built. I've wanted one of these engines at least back to 1999 when I saw this motor in one of the Emory cars in a Excellence magazine. Dean has had to put up with me calling him every year or two to keep the dream alive. I came across a sweet 912 saw it had not been done yet and there you go. I'm 59 this is my dream, and I hope all of you on Pelican can have yours to.
Chris
Old 08-15-2011, 04:05 PM
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motor

WOW if I can get one to fit on my shifter kart.....!
Old 08-15-2011, 04:09 PM
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Overhead cams are better than type 4 pushrods. Those engines were made to run static agricultural machinery if I recall correctly.
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911S
1971 chassis, 2.7RS spec MFI engine, suspension mods, lightened

Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
http://www.flickr.com/photos/max_911_fahrer/
Old 08-15-2011, 07:08 PM
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I think most of us who are on this site have strong preferences. If it's Porsche and it's your area of interest then it's good. I think Porsche is proud of all their cars.
Old 08-15-2011, 07:23 PM
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Well the type IV was a VW product.
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911S
1971 chassis, 2.7RS spec MFI engine, suspension mods, lightened

Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
http://www.flickr.com/photos/max_911_fahrer/
Old 08-15-2011, 07:32 PM
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I love the idea of these Polo motors, but they are very expensive. They make most sense in a 356 application where space is at a premium. You could put a six-cylinder 901 motor with all the goodies in a 912 for less money than building a Polo. However, if money's no object, you sure can't beat the cool factor of having the big four.
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Old 08-15-2011, 08:02 PM
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That engine rawks.....

912E Porsche body with a type 4 engine...So what its still the classic body. Good daily driver

ps Rabys prices approach the price of this engine if you are looking for 200+ HP...He knows his stuff but you pay the price
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Last edited by FenderGuy; 08-15-2011 at 11:29 PM..
Old 08-15-2011, 11:27 PM
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Quote:
Originally Posted by Flieger View Post
Overhead cams are better than type 4 pushrods. Those engines were made to run static agricultural machinery if I recall correctly.
I don't recall that.

Awesome project. It takes a serious commitment to build a low volume engine to that level of excellence. You can't do it with a drill and a file...


This is Porsche passion expressed.
Old 08-16-2011, 04:57 AM
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Thats incredible engineering right there, Im blown away.

Thank you for sharing it with us
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Old 08-16-2011, 06:59 AM
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Cool and all, but good lord, why? I grant you that rebuilding a 912 engine has become very expensive indeed; and yeah, Raby's VW engines make horsepower, at a price; but if it's horsepower one wants, why not just stick with a 911 engine? I just don't see throwing cubic money at doing this, no matter how intense the "cool factor."
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Old 08-16-2011, 07:11 AM
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Why

I've driven many 911's and they are awesome. I never gave a 912 any mental energy tell I drove one. The lightness and balance just blew me away. The power did not. A POLO engine is only 15 to 20 lbs more than a 356 engine and 100 to 120 lbs lighter than a 911 engine. Also that engine has about 5 inches less rear overhang. Dean has several of these motors that have a lot of miles on them. It costs a lot to build a 356 engine that makes that kind of power. And besides I think that engine is just flat beautiful.


When it comes to costs I bet the VW guys look at all of us and say WHY?

I believe I could build a big CB powered Ghia for 25% of the cost that could give many Porsches a rough time.
When we are talking Porsches, are we all really that rational.

Last edited by cmpski; 08-16-2011 at 08:01 AM.. Reason: spelling
Old 08-16-2011, 07:29 AM
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Old 08-16-2011, 07:32 AM
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Quote:
Originally Posted by cmpski View Post
A POLO engine is only 15 to 20 lbs more than a 356 engine and 100 to 120 lbs lighter than a 911 engine. Also that engine has about 5 inches less rear overhang.
That says it all. And it is a lot less money and a lot less maintainance than a Fuhrmann 4 cam Carrera.
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1971 chassis, 2.7RS spec MFI engine, suspension mods, lightened

Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
http://www.flickr.com/photos/max_911_fahrer/
Old 08-16-2011, 10:45 AM
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Great stuff. Where do you source the POLO case, crank, etc.? It all looks new, looks like the flat four OHC 'German' motor has come a long way.

Maybe you've seen this team from Austria that runs an autocross bug over there:

----------www.vw1303s.at----------





Modified VW Type 1 case to accept 911 heads and cams, made some serious numbers for the late 1970s, 225hp??

Just hp numbers on paper of a modified VW vs. whatever people quote don't do much for me, pushrod engines have such a different powerband vs. OHC motors (and of course the rev range is much higher). No one ever seems to quote tq or where in the powerband those numbers are made.

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Old 08-16-2011, 10:45 AM
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