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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,525
Garage
Unfortunately the deck lid has to be up during the run in order to get data from the ignition system.

The runs need to be set up identically in order to have an accurate comparison. It won't be hard to repeat today's fiasco now that it is nearly July in Alabama. The ambient temperature on my dyno sheet states 93*F and that was at 10:00 this morning. The humidity didn't help either. I've pulled the bumper back off and will put the stock muffler on when I put it all back together.

The shop owner has a huge fan that he points toward the radiator of "normal" cars. A tripod of some sort would be needed to accommodate the 930 style intercooler.

I was hoping that one of you fellas had experienced a similar problem during a dyno tuning session and might know approximately how much power I have left on the table.
Once I reset the baseline with another heat soaked dyno run I'll have my numbers.

My dyno results are not going to be impressive by 930 standards. I am doing this strictly to measure the HP increase of a free flowing exhaust on a 930 engine with typical mild modifications. The engine has been locked down at 0.7bar; it's a great test mule.

What won't show up on a dyno graph is the free-revving characteristics and the kick ass sounds this thing makes! It is a cackle monster during decel and the turbo spool sound is as orgasmic as the muscle car idle.


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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 06-23-2007, 07:39 PM
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