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Automotive Exceptionalism

Flatfoot
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Foo2rama Foo2rama
M90 eh?

dang that’s a rare bird, I’d always wanted to do an S50 or even go all out with an S54 for the ultimate BMW inline 6 coupe.

I currently DD the e9’s spiritual child with an s54.

is yours a true CSL? If so didn’t those have wierd sheet metal to begin with?

No, it’s not a true CSL. It is a US delivery CS to which I added a bunch of “Liecht”.

And I imagine the thinner gauge steel on the true CSL’s may have the same weirdness to the alloy.

I have an M88/3 that was going to go into it back 20 odd years ago. The S50 would have been wild, but either of these motor choices would not provide quite the period vibe I was looking for at the time. At that time M90’s were relatively available at a price I could afford-as were CR dogleg gearboxes. This motor has a trick CNC ported head and big ole domed pistons that were available at that time. And I had always wanted to learn how to tune Webers, which is quite a rabbit hole - in and of itself. This motor dynoed at 280 pounds feet and 298 hp at 6200 on a 300 degree cam while running on Sunoco 110 octane. A bigger cam would bump the power up even more at a higher RPM peak, but at the expense of street driveability.

all this stuff is a slippery slope as you all know. And I needed to figure out where I could effectively play on that slope. I’m happy with it as it is and this car deliverers big grins to me every time I run it.
 
zkramez
Posts
99
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98
Flatfoot Flatfoot
No, it’s not a true CSL. It is a US delivery CS to which I added a bunch of “Liecht”.

And I imagine the thinner gauge steel on the true CSL’s may have the same weirdness to the alloy.

I have an M88/3 that was going to go into it back 20 odd years ago. The S50 would have been wild, but either of these motor choices would not provide quite the period vibe I was looking for at the time. At that time M90’s were relatively available at a price I could afford-as were CR dogleg gearboxes. This motor has a trick CNC ported head and big ole domed pistons that were available at that time. And I had always wanted to learn how to tune Webers, which is quite a rabbit hole - in and of itself. This motor dynoed at 280 pounds feet and 298 hp at 6200 on a 300 degree cam while running on Sunoco 110 octane. A bigger cam would bump the power up even more at a higher RPM peak, but at the expense of street driveability.

all this stuff is a slippery slope as you all know. And I needed to figure out where I could effectively play on that slope. I’m happy with it as it is and this car deliverers big grins to me every time I run it.
great build! If youre near NJ i would love to check it out sometime!
 
Geme81
Posts
245
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321
Flatfoot Flatfoot
Love the case of Modela strapped to the luggage rack on the Isetta Why not use a classic daily?
I’m Heading off for a run to the dump in about 20 minutes in this:
11A31506-32F3-4EFD-9BBF-99021CF61CDC.jpeg
stunning
 
norb1967
Posts
498
Likes
407
RCINPHILL RCINPHILL
Recent European sales:
1987 Porsche 911 Cabriolet
wm-0856-altwm1600-3.jpg

1966 Jaguar XKE Coupe
wm-7046.jpg

1987 Porsche 930
wm-5326a_2.jpg wm-5333_2.jpg

1959 VW Beetle
wm-2631.jpg

1967 Austin Healey 3000
wm-3088.jpg

1972 Mercedes Benz 280SEL
wm-1796.jpg
I have a soft spot for VW Bugs, and that looks like a lovely '59. From the era many think was the best for the Bug - the 'classic look' rear window, but still small windows all round, sloping headlights, long rear engine lid etc.
 
esperando
Posts
58
Likes
138
Flatfoot Flatfoot
Sorry, but no help to you for a lead on a shell. Check out E9coupe group?

I bought this one as a clean rolling shell 21 years ago now. Even back then it was tough to find a good one. As you know, The Karmann supplied sheet metal is some weird steel alloy that rusts -even when you look at it funny 😉 . It took some practice to MIG weld Coupe sheet metal when compared to American “iron”.
Triple webers on a 12.5:1 M90, mated to a C/R dogleg 5 sp. gearbox in this one. 2596 pounds empty weight when run across the scale at the dump last time through.
5FBBAB8C-0FEA-4ED6-B79C-8A49EF04AE8B.jpeg


I can not see the M90, you mean the block ? that obviously can not be seen in the pics

it looks to my untrained eye like an M30, maybe also B30, or B35 ?
at least the head (year stamped 79) is the conventional M30 one, not mechanical fuel pump open rod, and quite an odd distributor, sort of big one,

I am not an expert on M90, forgive me if i am wrong, but i know quite a bit about M30´s having overhauled a handfull of those by myself

that is VGS ports to the webers ?

what other moods have you introduced in this one ? is it an american CS ? Euro ?

i do still enjoy my own 3.0CS, Euro, dated 1971; try to keep it stock...will post some pics

regards
 
dsio
Posts
29,682
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35,628
esperando esperando
I can not see the M90, you mean the block ? that obviously can not be seen in the pics

it looks to my untrained eye like an M30, maybe also B30, or B35 ?
at least the head (year stamped 79) is the conventional M30 one, not mechanical fuel pump open rod, and quite an odd distributor, sort of big one,

I am not an expert on M90, forgive me if i am wrong, but i know quite a bit about M30´s having overhauled a handfull of those by myself

that is VGS ports to the webers ?

what other moods have you introduced in this one ? is it an american CS ? Euro ?

i do still enjoy my own 3.0CS, Euro, dated 1971; try to keep it stock...will post some pics

regards
M90 is a combination of an M30 single cam head with M88 bottom end resulting in a shorter stroke, larger bore 3.5L version of the M30B35, so it allows for high revving, high compression single cam builds. With an upgraded valve train you can rev past 7000 very easily which isn’t bad for a big boy like that.
 
esperando
Posts
58
Likes
138
dsio dsio
M90 is a combination of an M30 single cam head with M88 bottom end resulting in a shorter stroke, larger bore 3.5L version of the M30B35, so it allows for high revving, high compression single cam builds. With an upgraded valve train you can rev past 7000 very easily which isn’t bad for a big boy like that.

that is good to learn
thank you for educating me on the subject

i keep my boy stock...boring of me !









 
Foo2rama
Posts
17,543
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26,554
ALEJANDRO BOVONE ALEJANDRO BOVONE
1600 hp aircraft engine 1940
IMG_5936.jpg IMG_5935.jpg IMG_5933.jpg
I think that is actually a marine packard engine, not a merlin
 
A
Posts
9
Likes
22
some nice cars on here
heres the one I just finished
GenUaHz.png
 
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