Dyno Numbers
 

I'm hoping to get my car dynoed next week. Gonna try to get a couple different pulls in. some single plug, some Dual plug. Also using different mufflers and megaphones.

I thought it would be cool to start a thread with peoples Dyno numbers and their mods to their motor so people can get an idea of what kind of horsepower numbers they can expect to see.

I know Noah, Widebody, Randy Wells, Randy Jones and others have been to the dyno if you could post that info again here that would be great. Thanks.

Come on, lets see those numbers!

Another vote for Dyno Numbers. But since HP and Torque on Dyno "A" does not compare with HP and Torque on Dyno "B", I hope people are planning to share the entire chart or something similar. That will be helpful in showing where the Torque Peak, HP Peak are as well as the shape of the curves which will be more meaningful then just the max HP and max Torque.

When I get to that point, I'd be willing to share comparable data.

I will be glad to start things off.
The car is an 85 carrera, engine was rebuilt about 3 years ago, euro specs.
Exhaust is a 2 in, 2 out muffler and headers cobbled together from a 73. Autothority chip, and of coarse the PO put a K&N airfilter on- which accounts for about 30 hp;) yeah right.
Car has been on the dyno twice, about a year apart- total of about 6 runs, all within this range
Car is an everyday driver, and sees the track about one weekend a month.
Gary

For the specs, go to http://vintagebus.com/porsche/specs.html

http://vintagebus.com/howto/e-ram/b.jpg

Hey Mike here are some more numbers for you to read.


Engine and dyno work by Dick Elverude, Northwest Machine Products,
3.2 liter (98mm x 70.4),
10.2:1 J-E pistons,
Web-Cam #120-104 grind,
3.2 Carrera heads with dual plug,
PMO 46mm carbs w/ tall manifolds,
dual plug 964 distributor conversion by Elverud,
ARP rod bolts,
Carrera pressure fed chain tensioners,
twin MSD 6AL ignition boxes,
930 lower valve covers,
Elverude aluminum flywheel,
Sach aluminum pressure plate,
SSI heat exchangers,
AJ-USA sports purpose muffler

281 H.P./ 244 ft./lbs. torque at the flywheel at 6700 RPM's.

Changed muffler and put her on the DynoJet to rejet the carbs and this is what we received. S-CAR-GO Racing dual in/out stainless steel muffler change and we received 222.1 HP and 201.5 ft/lbs. torque measured at the rear wheels at 6500 RPM's.

I wish I had the new muffler on when the motor was on the crankshaft dyno for a true comparison.

Randy Jones
1971 911

Looks good keep em coming.

I'm really impressed with the torque on that 3.6 I had no idea they had that kind of torque. Is that correct?

It's wheel torque, not engine torque. . . it had me scratching my head first time I saw it too.

Stock 964 is 250 hp and 229 foot pounds of torque. Thom's dyno sheet seems to use a non-standard measurement criteria. The 'miles per hour' instead of 'rpm' is the first clue that something is different. I'll vouch for his car being very strong, but that torque figure can't be what it appears.

Island911, thanks for the clarification, I was about to put my 3.4 up for sale and jump on the bandwagon:)

ON the DJ my 89 3.2 makes 211 HP at rear wheels.

Mods as GHL muffler and Mass Air flow. Car hauls ass.

THis is my dyno chart dated 3/16/02.
The blue line is with the stock paper filter,the red line is with the K&N.I realize that the paper is the better number BUT after some research the second run on most cars gave the better number,I did my second with the paper so I do not think this is a reliable test of the K&N vs. paper filter. I did get 174hp/175ftlb with 230,000 miles on my 1983SC, cat by-pass, Bursch muffler and K&N filter. OK.. OK.. it is 167hp with the K&N, 174 with paper.
I will stick with the K&N !

Yes, I've never figured that out either. Here's the way I explain it to people, for better or for worse: because of the drivetrain, you correct upwards for HP losses, and correct downward for the torque gains of the mechanical advantage of the transmission. I don't know what either correction factor would be in this case.

Either that, or you seriously under-estimate the power of the e-ram!

Power to weight ratio?
 

As I read this thread I was looking for two things that might be of general interest: rear wheel HP/torque is the number that matters and 2) the relative weights of the various models would be relevant to add to the comparisons. I'll be looking up some figures in Anderson's book, but it seems a "wheel HP/weight of car" figure is a good one to be comparing as well-- since we are talking data in this thread after all...

Bosch dyno, corrected numbers:

108rwhp, 126 flywheel.

1969 911T 2.0 litre, with E-cams, probably stock otherwise.

Regular 901 transmission.

So much power.... scary.

stock 83 euro with cat. at rear wheels max hp 173.5 max torque 164.1. waiting for correct muffler to show up for my ghl's to get next reading to see real world hp gain with new exhuast

I figure i jump in
3.2 Turbo 7 psi of boost,no internal modifications or intercooler
320 hp/276 rwhp.