show me the dyno!

Not recorded- haven't driven a normal spec 3.5 in a coupe so have no basis for comparison but engine, while very strong in upper rev range, is not peaky at all.
 
that stands to reason as the 284 is not a radical cam ... its a very nice cam that gives you a lot across the board. you have to get above a 300 degree cam to start making a lot more power at the upper end of the range. in doing so, you will lose torque at the lower end.
 
Bwana said:
Is the M30B35 still the best all around engine for turbocharging? Better than the M106?
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The M106 engine is the best for turbocharging. Each M106 was broken in, disassembled and the block cured in oil for a year. there are oil sprayers for each piston skirt and the timing chain. Plus, the M106 has knock sensors.

Either the B34 8.0:1 or the B35 can be turbo'd. Just be mindful of the proper setup before firing it up. I am working on a B35 engine harness for a turbo project. With the B35, you will literally get more bang for your buck, starting at 9.3:1 compression.
 
RJRuiz said:
Dyno sheet from my Korman Stage II injected M30B34 3.5; Schrick Cam, ported/polished, big valves, fly-cut pistons, Stahl headers. 276 @ crank, slightly lopy idle, pulls like a freight train. Drove from Miami to The Vintage and had a blast!
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Very respectable dyno run! You are at the max for a naturally aspirated M30 motor. Enjoy!
 
E9Wayne said:
E9Wayne moving East -- resto done and new dyno run #s

Hey guys, long time no chat! I'm on with a new company back east since April 2011 and my girl stayed behind for a full resto at Coupeking. That job is now complete (see the website and projects -- "Nachtblau CS resto" for the work Peter and Erik did since July of 2011). They also did a dyno run now that my Megasquirt calibration is done (thanks to David -- draleu on the board -- for the final computer work). So the B35 mod with Coupeking exhaust got me to 197 whp and 217 lbft of torque. Megasquirt increased the whp to 216 and torque to 245, which equals 261 hp and 296 lb ft of torque at the crank, more or less. Not bad for a stock B35, exhaust and MS modification. See you guys in Virginia soon, including Bill Riblett. My car should be ready to drive out here in two weeks!

Wayne
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Good Lord! I remember the day when your car was Megasquirted! Megasquirt info was and still is not correct for using the B35 55 pin harness. But, we are well past dickering and on to bigger and better works!
 
E9Wayne said:
Piano piston motor dyno results

I had a blast doing my first dyno run in November last year, about a year after Don Lawrence installed my B34 10:0.1 compression ratio motor with L-jetronic intake and Motronic 1.3. I added Coupeking's exhaust system (B35 manifolds, stainless downpipes, etc) in mid-Summer, mostly for sound, but I got at least 20 more horses too. The dyno results were 197 wheel horsepower and 217 lb ft of torque but I was plagued by a lean mixture up until 5,000 rpm which is holding some ponies back clearly. She pings under load sometimes even with premium fuel. Still 233 hp ain't bad and it can only get better with a proper 13:0.1 ratio.

Here's footage of my run...

There's some gremlins in my Motronic pieces or AFM, air leaks, etc. What do you expect with 20+ year old parts? But a lot of this will be resolved soon when I have Megasquirt installed with a new MAP sensor for air metering.

Can't wait to get the dyno results after that!
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Interesting update, all. Shortly after this last dyno run in 2011 with my stock motronic system, Coupking exhaust, I got 197 hp and 217 lb ft of torque. I do recall the way my E9 ran back then which was not as civilized as with Megasquirt EFI today. My Megasquirt system was installed in 2012, or thereabouts, and I've played around with various tunes ever since up until last week. Don had Chris Pederson, his rising young technician star, visit Jahan and I out in Virginia this week. On my car, Chris installed the updated PNP2.2 ECU to replace the original hand-soldiered Gen 1 box that has caused some issues with other E9 owners. Chris also updated my wiring sytem going into the ECU, installed new spark plugs and wiring and started off tuning with my Gen 1 box tune. That tune as quite rich and, while I got decent power and response, I noticed on road trips that my carburetor and Motronic colleagues seemed to get better gas mileage. As of yesterday, I think my tune has really come into a state of optimal maturity.

After 11 years of faithful service, Don's engine is still running strong, first of all. I got 198 hp and 215 lb ft of torque. And the best part about all of this is how smooth and responsive the engine is. I don't think the BMW engineers could do much better than where my powertrain is now with a stock B34 long block, bigger C runners, Coupeking exhaust and the Megasquirt ECU. And look at how smooth the curves are...

And my advice to the other MS owners who've not yet dyno tuned, get your car set up for that! Chris is an expert at this and the dyno tuners took his base tune to an even higher level with the learning and trial efficiencies that you can get with the dyno and a good tuner.

Thanks again to Don and Chris for keeping my car updated and running strong!

Wayne

Wayne Killen rpm.png
 
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