Dyno numbers and a few questions

Chris_H · 06-26-2001, 10:51 PM

Well I got my car dyno'd at Street Flight LLC in Phoenix today, and had a great time! Granted I don't have many mods right now, so I wanted to set this as my baseline for when I do more mods to the car. I guessed that I would put out about 209 at the wheels, and my best run was 207.0 rwhp @ 4550rpm and 279.7 @ 3600rpm. I knew the car always felt like it ran out of steam close to 4800. Is this normal, or is there something possibly wrong with the motor? The lines for both the torque and hp look great, no real jagged or high and low points. I held my torque at about 270-279 between 3000-3600. Overall I had a great time and can't wait to add more stuff to go do this again. One last question though. I got my best numbers at 9* timing. That didn't seem right to me, but thats the way it worked out. I was getting a lot of black smoke and pinging at 12* and 11* seemed to work pretty good too, only short 2hp at 11*. Any reason for this? Sorry for the long post, just wanted to share my excitement for the day and see what people thought.

Chris

------------------
1987 LX, rebuilt 306, Mac shorty headers 1 5/8, 2 1/2" Mac off road h-pipe, 2 1/2" 2 Chamber Flowmasters cat-back, Mac underdrive pullies, 65mm Throttle Body/Spacer, 3.55, K&N, Tremec 3550, King Cobra Clutch, Steeda Tri-Ax, Autometer gauges, White face gauges, blue silicone radiator hoses, Steeda Clutch Adjuster Kit.
Best times:
2.331 60ft, 9.966 @ 71.069 1/8 mile, 15.491 @ 91.846 1/4 mile at 4000 ft. elevation on street tires

Dark Knight · 06-27-2001, 12:11 AM

did you have the spout connector un-plugged when you set the timing? gonna go back when everyone does in july? I'm shooting for 300rwhp with the stock cam ;-)

------------------
84 convt,'95 302,AFR's, performer
3.55's, underdrives BBK shorties
stock cam, 1.7's
13.85@102.5
and a '68 stang that WAS nasty ;-)

Chris_H · 06-27-2001, 12:29 AM

I had the spout plugged back in. Made sure so that I wouldn't mess anything up. Was too worried I would screw something up. Send me an email about July. I MIGHT be able to make it.

Chris

withamc · 06-27-2001, 12:47 AM

Do you have a high output fuel pump and an adjustable fuel pressure regulator? You could be running lean at higher RPMs.

Chris_H · 06-27-2001, 09:41 AM

No, I don't have the afpr, or the fuel pump, just stock stuff for now. My A/f ratio stayed between 13.2-13.4 the whole time during the run. That line was fairly straight, but at the same time it didn't spike high or low real bad. If I had a scanner I would scan in the dyno chart, but no suck luck. Any other comments/suggestions?

Chris

exgmguy · 06-27-2001, 11:52 AM

Something is up. Every Mustang in the world will make more power with better than 9 degrees of timing. Maybe the inertia ring on your balancer has slipped?

Dark Knight · 06-27-2001, 11:53 AM

did you like the place?

------------------
84 convt,'95 302,AFR's, performer
3.55's, underdrives BBK shorties
stock cam, 1.7's
13.85@102.5
and a '68 stang that WAS nasty ;-)

Chris_H · 06-28-2001, 08:36 AM

Not too sure about the inertia ring. How would I be able to check that? To be honest, I don't even know what the inertia ring is! My car likes to be different and difficult, and so that may be its reason for running better at 9*. On the way home, it was over 100* outside, the car was running well over 200*, and the air conditioning was on. When I got on the freeway, with the timing set at 11*, I was pinging, and so I ended up adjusting it back to the 9*. Just doesn't make sense to me.
As fas as the shop was concerned, I liked it a lot. They are a fairly new company, and so they are still expanding the place. They do use a dynojet though. Dark Knight I sent you an email letting you know how it all went. But if anybody is in the Phx area, or close too, I would definately recommend these guys.

Chris

06-26-2001, 10:51 PM	#1
Chris_H Registered Member Join Date: Oct 1999 Location: New Mexico Posts: 488	Dyno numbers and a few questions Well I got my car dyno'd at Street Flight LLC in Phoenix today, and had a great time! Granted I don't have many mods right now, so I wanted to set this as my baseline for when I do more mods to the car. I guessed that I would put out about 209 at the wheels, and my best run was 207.0 rwhp @ 4550rpm and 279.7 @ 3600rpm. I knew the car always felt like it ran out of steam close to 4800. Is this normal, or is there something possibly wrong with the motor? The lines for both the torque and hp look great, no real jagged or high and low points. I held my torque at about 270-279 between 3000-3600. Overall I had a great time and can't wait to add more stuff to go do this again. One last question though. I got my best numbers at 9* timing. That didn't seem right to me, but thats the way it worked out. I was getting a lot of black smoke and pinging at 12* and 11* seemed to work pretty good too, only short 2hp at 11*. Any reason for this? Sorry for the long post, just wanted to share my excitement for the day and see what people thought. Chris ------------------ 1987 LX, rebuilt 306, Mac shorty headers 1 5/8, 2 1/2" Mac off road h-pipe, 2 1/2" 2 Chamber Flowmasters cat-back, Mac underdrive pullies, 65mm Throttle Body/Spacer, 3.55, K&N, Tremec 3550, King Cobra Clutch, Steeda Tri-Ax, Autometer gauges, White face gauges, blue silicone radiator hoses, Steeda Clutch Adjuster Kit. Best times: 2.331 60ft, 9.966 @ 71.069 1/8 mile, 15.491 @ 91.846 1/4 mile at 4000 ft. elevation on street tires

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06-27-2001, 12:11 AM	#2
Dark Knight Registered Member Join Date: Oct 1998 Location: Az Posts: 854	did you have the spout connector un-plugged when you set the timing? gonna go back when everyone does in july? I'm shooting for 300rwhp with the stock cam ;-) ------------------ 84 convt,'95 302,AFR's, performer 3.55's, underdrives BBK shorties stock cam, 1.7's 13.85@102.5 and a '68 stang that WAS nasty ;-)

06-27-2001, 12:29 AM	#3
Chris_H Registered Member Join Date: Oct 1999 Location: New Mexico Posts: 488	I had the spout plugged back in. Made sure so that I wouldn't mess anything up. Was too worried I would screw something up. Send me an email about July. I MIGHT be able to make it. Chris

06-27-2001, 12:47 AM	#4
withamc Registered Member Join Date: Aug 2000 Location: Thousand Oaks, CA Posts: 396	Do you have a high output fuel pump and an adjustable fuel pressure regulator? You could be running lean at higher RPMs.

06-27-2001, 09:41 AM	#5
Chris_H Registered Member Join Date: Oct 1999 Location: New Mexico Posts: 488	No, I don't have the afpr, or the fuel pump, just stock stuff for now. My A/f ratio stayed between 13.2-13.4 the whole time during the run. That line was fairly straight, but at the same time it didn't spike high or low real bad. If I had a scanner I would scan in the dyno chart, but no suck luck. Any other comments/suggestions? Chris

06-27-2001, 11:52 AM	#6
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	Something is up. Every Mustang in the world will make more power with better than 9 degrees of timing. Maybe the inertia ring on your balancer has slipped?

06-27-2001, 11:53 AM	#7
Dark Knight Registered Member Join Date: Oct 1998 Location: Az Posts: 854	did you like the place? ------------------ 84 convt,'95 302,AFR's, performer 3.55's, underdrives BBK shorties stock cam, 1.7's 13.85@102.5 and a '68 stang that WAS nasty ;-)

06-28-2001, 08:36 AM	#8
Chris_H Registered Member Join Date: Oct 1999 Location: New Mexico Posts: 488	Not too sure about the inertia ring. How would I be able to check that? To be honest, I don't even know what the inertia ring is! My car likes to be different and difficult, and so that may be its reason for running better at 9. On the way home, it was over 100 outside, the car was running well over 200, and the air conditioning was on. When I got on the freeway, with the timing set at 11, I was pinging, and so I ended up adjusting it back to the 9*. Just doesn't make sense to me. As fas as the shop was concerned, I liked it a lot. They are a fairly new company, and so they are still expanding the place. They do use a dynojet though. Dark Knight I sent you an email letting you know how it all went. But if anybody is in the Phx area, or close too, I would definately recommend these guys. Chris