4 Cam motor pictures

Discussion of 4-Cam Type 547 engines (and all the Fuhrmann racing variants) and cars that powered them.
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Ibrahim Kuzu
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Re: 4 Cam motor pictures

#31 Post by Ibrahim Kuzu » Wed Mar 24, 2021 10:18 am

Guys,
Definitely no fun if you do not enjoy building the Carrera shroud pieces, As you very well know very challenging hand work
at least 30 times front and back halves bolts on and un bolts to make sure all air channels are in the line .takes us part time 2 months to get one unit done.
IK
4 Cam Cooling
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Carrera fan shroud.jpg
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Jacques Lefriant
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Re: 4 Cam motor pictures

#32 Post by Jacques Lefriant » Wed Mar 24, 2021 1:58 pm

Hi Rainer
do you do the internals like this
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Rainer Cooney
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Re: 4 Cam motor pictures

#33 Post by Rainer Cooney » Wed Mar 24, 2021 8:56 pm

Jacques, Yes all the internal scrolls are as original made from 1mm aluminum as are the outside pieces. Martin, as to why I did this : I needed to offer this item to customers for whom I do work, this is the proper system for 550 Spyders which is my main business. I had one original steel set of tin and needed more and as I work with aluminum all day long it wasn't too hard to make the decision to fabricate the cooling tin from that also. Like all projects that fall into my orbit it was about halfway thru the development of the tooling that I finally figured out just how much work this is going to require. The first piece I made, and one of there more technically interesting , was the air intake - what the factory parts manual calls an " adjustment ring". It's made by metal spinning on the lathe. The difficulty is there is a reverse bend which will captivate the tooling once it is formed and therefore cannot be removed. The tooling I made has a removable ( in pieces ) center which allows me to get the part out . Metal spinning allows me to hold a good tolerance as the fit to the fan needs to be very close to minimize slippage. In addition to the cooling tin in the photo I made the entire car.
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Martin Benade
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Re: 4 Cam motor pictures

#34 Post by Martin Benade » Wed Mar 24, 2021 10:20 pm

That’s outstanding. I’d love to come sit in a corner of your shop for a year and watch great things being created.
Cleveland Ohio
62 Cabriolet
56 VW
02 IS 300
04 Sienna

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Jacques Lefriant
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Re: 4 Cam motor pictures

#35 Post by Jacques Lefriant » Thu Mar 25, 2021 11:37 am

Hi Rainer
You are the King.
you realize that if you make that part in 2 pieces it makes it possible to quickly adapt to different housings.
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Rainer Cooney
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Re: 4 Cam motor pictures

#36 Post by Rainer Cooney » Fri Mar 26, 2021 11:17 am

Jacques, I work almost exclusively on 547 engines so I'm not familiar with all the variations of the air intake. I know there's a slight bolt pattern difference on the bottom mounting bolt, this being lower on an extended tab on the split shrouds. Never really studied a 2 liter piece.
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Jack Walter
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Re: 4 Cam motor pictures

#37 Post by Jack Walter » Mon Mar 29, 2021 11:59 pm

One way to tell the early 547 motors is the side port inlets and outlets for the oil lines - the serial number on the very early engines were stamped on the bellhousing flange. This was P90009 - original motor for 550 Spyder 550-0013 which was reunited with the chassis ten years ago.
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Jacques Lefriant
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Re: 4 Cam motor pictures

#38 Post by Jacques Lefriant » Tue Mar 30, 2021 9:52 am

Hi Jack
great pictures i think the serial no placement depended on weather the engine was meant for mid engine or rear engine. btw is there an "internal" no stamped?
j
 

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Jack Walter
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Re: 4 Cam motor pictures

#39 Post by Jack Walter » Wed Mar 31, 2021 12:02 am

Jacques - I didn't know about an internal number but I was contacted by the owner of the Spyder that this was the original engine for and we basically swapped motors so this one would be returned to its original chassis. I got a plain bearing 1600 4-cam that had recently been rebuilt in exchange. Since the engine had long been removed from Dean Jeffries Carrera I felt that if I helped one car get its original race engine back it would be the right thing to do. It probably made his 3 million dollar car worth 4 million but the motor I had needed to be gone through and the gentleman who owned the Spyder also used to own a Formula One team so he had a team of mechanics that he could employ to rebuild the 4-cam. I think they had the engine restored and running within two months of it arriving in his shop.
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Jacques Lefriant
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Re: 4 Cam motor pictures

#40 Post by Jacques Lefriant » Sat Apr 03, 2021 6:42 pm

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692 long block all new parts from Peter Hoffman
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Jacques Lefriant
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Re: 4 Cam motor pictures

#41 Post by Jacques Lefriant » Mon Apr 05, 2021 8:35 pm

97311 i did this engine with Chuck Lawson FS Road Scholars
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Jacques Lefriant
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Re: 4 Cam motor pictures

#42 Post by Jacques Lefriant » Fri Apr 09, 2021 11:35 am

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from Facebook Vernon Crotts
 

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Jacques Lefriant
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Re: 4 Cam motor pictures

#43 Post by Jacques Lefriant » Fri Apr 09, 2021 11:42 am

Bill Richardson
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he forgot the extra cams
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DonCichocki
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Re: 4 Cam motor pictures

#44 Post by DonCichocki » Sat Apr 10, 2021 9:50 am

Wonderful posts and pictures! Thanks guys!

Roy Smalley
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Re: 4 Cam motor pictures

#45 Post by Roy Smalley » Sat Apr 10, 2021 1:38 pm

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908 16 GTGT Cpe
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90765 GS Cpe
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 Roy Smalley
Texas

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