Stroker Crank

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peterock
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#11 Post by peterock »

Delay on the dyno charts (see my post on the electrical issue). However, looking promising once that issue is worked out. The pulls that were done on the dyno so far had hp in the 52 range and it wasn't close to being tuned.

peterock
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#12 Post by peterock »

Just got word the Dyno run was good. I will post charts tonight or tomorrow. I was told 54hp, 35 ft lbs tq.

UpsMan
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#13 Post by UpsMan »

Nice torque number for sure!!!

peterock
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#14 Post by peterock »

I wasn't able to download all the run files as they were actually closed by the time I got there. I'll get them next time I'm there. I scanned the printed copy though. Run #30 was the best and final run. We use VP C12 for fuel (what the guy has access to and runs that is running this motor). The fuel probably hurt the numbers a little as it is over kill. U4 or MRX1 would have more then likely yielded better results. Of course, we can only speculate on that as it wasn't ran that way.

[attachment=8188:dynorun.JPG]

cannondale27
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#15 Post by cannondale27 »

That has a real nice curve also.

MX Quad Dad
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#16 Post by MX Quad Dad »

Is it normal to have such a big differance in were the power starts at the low end?

I like the flat power curve and like where run 28 starts Or at least I think lower is better

peterock
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#17 Post by peterock »

Where it starts is just in reference as to at what RPM the dyno operator starts "sampling".

MX Quad Dad
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#18 Post by MX Quad Dad »

Soory but Ive never realy done anything with dynos before. and maybe its because I have allways tuned (seat of the pants) from just off Idle. I guess I'm getting to old and don't ride nearly enough to run at the high rpms all the time anymore. I like to think it has something to do with wisdom though

Why wouldn't they start from the same point though?

claas900
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#19 Post by claas900 »

Peter what did you guys set at cam timing at? Also what pipe you guys running?

peterock
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#20 Post by peterock »

This was just a pair of two hole cams so timing was set at 108 on both. As for pipe, this is a TI Header with a FMF Shorty silencer, Power Commander, Steve's Coolant Temp Harley Map in ECU.

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