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-   -   3.2 SC Longstroke GT3 Crank - Dynoed! (http://forums.pelicanparts.com/911-engine-rebuilding-forum/1127496-3-2-sc-longstroke-gt3-crank-dynoed.html)

Axel84 10-04-2022 04:19 AM

3.2 SC Longstroke GT3 Crank - Dynoed!
 
RSR Engine dynoed - 316 BHP
well I call it a RSR engine but its more of a street engine.
More meat and potatoes than a Opera screamer.. still screams though
SC engine, 3.25 Longstroke. JE pistons, mahle barrels.
GT3 Crank, Schrick 320/308 cams - RSR rocker arms - Carillo rods, yada yada GT3 cup oilpump.
Built by Richard Chamberlain, CTR Developments - Cambridge.
Car is a 88 930 turbo german car black originally. Backdated to a 72 2.8 RSR.
G50 gearbox, shortened ratios. should shift a bit this thing.




http://forums.pelicanparts.com/uploa...1664882099.jpg
http://forums.pelicanparts.com/uploa...1664882099.jpg
http://forums.pelicanparts.com/uploa...1664882099.jpg
http://forums.pelicanparts.com/uploa...1664882099.jpg
http://forums.pelicanparts.com/uploa...1664882099.jpg
http://forums.pelicanparts.com/uploa...1664882099.jpg

Axel84 10-04-2022 04:20 AM

more pics
 
http://forums.pelicanparts.com/uploa...1664882283.jpg
http://forums.pelicanparts.com/uploa...1664882283.jpg
http://forums.pelicanparts.com/uploa...1664882283.jpg
http://forums.pelicanparts.com/uploa...1664882283.jpg
http://forums.pelicanparts.com/uploa...1664882283.jpg
http://forums.pelicanparts.com/uploa...1664882283.jpg
http://forums.pelicanparts.com/uploa...1664882283.jpg
http://forums.pelicanparts.com/uploa...1664882283.jpg
http://forums.pelicanparts.com/uploa...1664882283.jpg
http://forums.pelicanparts.com/uploa...1664882283.jpg

Axel84 10-04-2022 04:22 AM

http://forums.pelicanparts.com/uploa...1664882489.jpg
http://forums.pelicanparts.com/uploa...1664882489.jpg
http://forums.pelicanparts.com/uploa...1664882489.jpg
http://forums.pelicanparts.com/uploa...1664882489.jpg
http://forums.pelicanparts.com/uploa...1664882489.jpg

GG Allin 10-04-2022 06:01 AM

92 x 76.4 ?

Axel84 10-04-2022 06:31 AM

hmm its 95 MM pistons I believe - and 76.4 crank
is that right?

GG Allin 10-04-2022 06:46 AM

I'm no expert but I believe 95 x 76.4 would be closer to 3.3 - 3.4 liters.

Nice Engine
Nice Car
Nice Shop
Nice Dyno Numbers

NickP 10-04-2022 07:10 AM

Very very nice.

2.7RS 10-04-2022 07:35 AM

I like the shop, garage, barn, museum whatever you want to call it

356RS 10-04-2022 08:03 AM

Confused.......Looks like a Mag engine case?

Axel84 10-04-2022 08:50 AM

nah its a 3.0 SC case.
=) That Im pretty sure of!

H-viken 10-04-2022 09:49 AM

Very nice! Are you in the Oslo area? Would love to see it next time I visit my brother.

icarp 10-05-2022 07:22 AM

Quote:

Originally Posted by GG Allin (Post 11813443)
I'm no expert but I believe 95 x 76.4 would be closer to 3.3 - 3.4 liters.

Nice Engine
Nice Car
Nice Shop
Nice Dyno Numbers


This is a great tool for displacement
https://spicerparts.com/calculators/engine-displacement-calculator

This proves to me that the 911 engine loves stroke .
I wonder if the headers and muffler are contributing to the bounce of the TQ curve

Nice engine and great car , well done

GG Allin 10-05-2022 07:48 AM

Quote:

Originally Posted by icarp (Post 11814290)
This is a great tool for displacement
https://spicerparts.com/calculators/engine-displacement-calculator

This proves to me that the 911 engine loves stroke .
I wonder if the headers and muffler are contributing to the bounce of the TQ curve

Nice engine and great car , well done

3.25 then, just like he said. I clearly am no expert :)

Thanks for the link.

Axel84 10-05-2022 09:40 AM

thanks for the nice feedback guys! much obliged!

Dpmulvan 10-05-2022 09:41 AM

What a cramped,unorganized, filthy garage. Someone is living large!

Axel84 10-05-2022 10:01 AM

Its not mine, its the Agent for Singer Europe. They have helped me build the car, stunning result

Dpmulvan 10-05-2022 12:04 PM

Quote:

Originally Posted by Axel84 (Post 11814467)
Its not mine, its the Agent for Singer Europe. They have helped me build the car, stunning result

Got ya, anyhoo pretty sweet ride ya got there.

stownsen914 10-05-2022 12:06 PM

Lovely looking car, and sounds like it has a healthy powerplant too!

One question - is it unusual that the torque and hp peaks are almost exactly coincident at 6300-6400 RPM?

winders 10-05-2022 12:48 PM

Quote:

Originally Posted by stownsen914 (Post 11814598)
Lovely looking car, and sounds like it has a healthy powerplant too!

One question - is it unusual that the torque and hp peaks are almost exactly coincident at 6300-6400 RPM?

Yes, the torque is in Newton Meters (Nm) instead of foot pounds. Here is the formula:

P(HP) = T(Nm)*N(rpm)/ 7127

So the crossover is 7127 RPM which matches the graphs.

trond 10-05-2022 01:49 PM

very impressive. Envious, but then it took some effort. Well done !


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