dyno results, mixed bag - TurboDodge.Com - Turbo Dodge forum for Turbo Mopars, Shelbys, Daytona, SRT-4, PT Cruiser, Omni and more!

**mopar2ya** · **dyno results, mixed bag**

After 2 years I finally got the Omni to the dyno. We were only able to do basic tune to 10 psi as we had many problems and only had 10 inch wide slicks to use. We did 310 h.p. at 10 psi, with a good tune and normal street tires 350 h.p. at 10 psi should be easy enough. I got a lot of work to get it straightened out by SDAC.

**bansheenut420** · 06-09-2006, 02:43 AM

310 hp is pretty damn good for 10psi!

Keep us updated!

QKsilverF1 · 06-12-2006, 10:07 AM

16valves are cool

DirectConnection · 06-12-2006, 11:32 AM

Yes...310 at 10 psi is very good.

2.216vturbo · 06-12-2006, 07:06 PM

A 10" slick easily sucked up 25HP from what I have read/heard/seen

Alan

turbovanman · 06-12-2006, 11:45 PM

Only 310 hp at 10 psi, awwwwwwwwww,

lol!

**bansheenut420** · 06-14-2006, 01:35 AM

Watch out for that tire bounce Wallace!

Did mean to hang up on ya the other night, I killed the battery on my phone! lol Well worth it though!

**mopar2ya** · 06-14-2006, 07:49 AM

No problem Cory. I'll be tearing into the tire shake/bounce problem soon. I have a suspicion they machined my hubs off centered.

DirectConnection · 06-14-2006, 07:35 PM

Quote:

Originally Posted by mopar2ya

No problem Cory. I'll be tearing into the tire shake/bounce problem soon. I have a suspicion they machined my hubs off centered.

They'd have to be off quite a bit. How much of a shake are you getting? They are actually bouncing? Maybe they were balanced wrong...or your axles have issues (even though I assume they are new HD pieces)

**bansheenut420** · 06-14-2006, 08:38 PM

Keep us updated on your progress!

**mopar2ya** · 06-14-2006, 10:55 PM

They are horrible, bouncing 1-2 inches on the drives side and 1 inch on the passenger side, you needed two hands holding tight or it would shake the wheel out of your hands. We swapped tires out and still had a shake. Rebalanced them and the rim looked perfect on the balancer. My axles are new HD units, I cant see those being the culprit, if they could what to look for? I watched them as I spun them by hand and they looked good. The rim spun very nicely on a balancer, but on the balancer its hub-centeric and on the car its lug centric.

Tonight I put a magnetic mount dial indicator on the front strut and put the indicator pin on the top stud and read high point on the gauge (.063) and rotated the hub and measured each high point on each stud they went anywhere from .061 to .070. I wonder if this slight difference would be magnified the further from the center out. Also I still need to check to make sure the 5 studs are properly centered around the hub and not all off centered. The alignment may also be way out as it hasnt been aligned either. I will bolt the rim back on and put the indicator on the edge of the rim to check as well.

Im certainly open for ideas.

turbovanman · 06-15-2006, 12:34 AM

Quote:

Originally Posted by mopar2ya

Tonight I put a magnetic mount dial indicator on the front strut and put the indicator pin on the top stud and read high point on the gauge (.063) and rotated the hub and measured each high point on each stud they went anywhere from .061 to .070. I wonder if this slight difference would be magnified the further from the center out. Also I still need to check to make sure the 5 studs are properly centered around the hub and not all off centered. The alignment may also be way out as it hasnt been aligned either. I will bolt the rim back on and put the indicator on the edge of the rim to check as well.

Im certainly open for ideas.

I'd say .010 is alot. Maybe check your R/T and see what the runout is. How are centered? using the hub. I know years ago, I had an old 78 Civic with mags and it would shake like a mofo, the wheels hadn't been machined properly so they were off center,

**mopar2ya** · 06-15-2006, 01:48 AM

The rotors appear to be hub centric and the wheels are lug centric.

**mopar2ya** · 06-16-2006, 01:18 AM

With the car up in the air, I pulled the rotor, still bounced, pulled wheel spacer, still bouncing, I will rebalance tire and have a tire dismounted and spin the rim and a freshly balanced tire and see if it doesnt go away. if not that leaves the machined hubs are no good..

eyeball · 06-17-2006, 09:53 PM

I bashed my head against a wall with a similar situation a few years back. We checked tires then wheels. It turned out that the wheel balancer was way out of calibration. This was a manual spin balancer without the motor. It never got up to high enough speeds to bounce on the balancer. Just another idea if nothing else pans out.