Dyno time tomorrow, anyone care to guess what the h.p. numbers will be?

[jmz]

I will be taking blue car tomorrow to get dyno tested and sniff tested to check the mixture.

Here are the particulars of the engine if anyone cares to guess the hp numbers.

3.0 litre, mahle pistons 9.3:1 c.r.
Heads mildly ported by Competition Engineering (not race ported)
Elgin Mod S cam...supposed to be the same grind as GE60
Weber 40's
SSI and factory dual in single out muffler
MSD box and blaster coil w/ re-curved distibutor.

Any guesses?

[91C2wrencher]

Gawd I love these games! I'm betting, well not betting because bettings illegal,, but I'd say uhmm, 264 rwhp fully corrected for a full moon and light winds from the south.

[1fastredsc]

225 rwhp.

[Milu]

229.7812 rwhp, with corrections for an overcast sky, east wind blowing & high humidity while using 15.912999900294% to calculate transmission losses.

[kstylianos]

i agree with fastred....between 220-230 rwhp

[CamB]

222.6hp at the hubs (on a Dynapak).

I've got a short stroke 3.2 with more compression, twin plug but only S cams and same exhaust. I took my 245hp (at the hubs), deducted 10hp (for compression, cams, and EFI too - forgot that), then assumed 3 litres instead of 3.164.

Me = geeeeeek.

WAIT. Revised guess. Deduct another 10hp for wheel dyno not hub dyno.

213rwhp.

[tobluforu]

216. That's my final answer

[jtkkz]

210HP

[pwd72s]

I'd be shocked if it broke 200...

[Lindy]

I would guess 196 at the rear wheels (however I hope that I am wrong, and on the low side).

[JeremyD]

194 until you get it tuned - then 208

[jmz]

Dyno Day postponed, work got in the way. Hopefully I will be on the dyno Mon or Tues. I'll post the results then.

[jmz]

jtkkz is the BIG WINNER.

I would post the graph but I can't open the file ...got a copy on diskette.

results are as posted
run 1. max power 210.2 max torque 199.1
run 2 max power 210.7 max torque 197.9
run 3 max power 210.1 max torque 195.4

max torque was acheived at approx 4700 rpm
max power was acheived at approx 6100 rpm

For a refernce point the 993 that was on right before me pulled 240

[Lindy]

Are these results at the rear wheels?

[Bill Verburg]

Remember that dyno #s are not absolutes. Their true use is only as a comparison on the same dyno under the same conditions.

The comparison of the 3 liter 211# to the 993 3.6 liter 240# is likly valid. It shows that you have a very healthy 3 liter. It would also be useful to take a look at the torque curves, That is where the bigger engines shine.

By the way was the 993 a '95 or a vram '96-98?

[dd74]

208 flywheel, or 177 rwp.

[yelcab1]

200 HP delivered to the rear wheels at maximum HP point.

[jmz]

The results posted were at the rear wheels. The test was conducted on a dyno-jet. Factoring a 15% loss through the drivetrain gives about 241 HP at the crank.

Something else to note that was actually commented on by folks at the shop is how much quicker my 3.0 w/ cams/carbs etc. reved up compared to the newer stock cars.

[jmz]

Bill, I don't know what year the 993 was.

[SpeedracerIndy]

~240hp out of a 3.0 is pretty impressive! About how much HP gain would you attribute to each of your upgrades? I am assuming about 180hp in stock us spec form.