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Re: F.A.S.T. Hemi dyno results/video
[Re: scatpacktom]
#584373
01/17/10 01:46 AM
01/17/10 01:46 AM
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Joined: Jul 2003
Posts: 5,180
upstate western ny
sogtx
master
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master
Joined: Jul 2003
Posts: 5,180
upstate western ny
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Quote:
When you told me how much torque the engine made I thought you were confused...Now i'm the one confused 
when i looked at my dyno sheets my torque was low too.. Cam ? Manifold ? Whatever it is seems to work for him .
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Re: F.A.S.T. Hemi dyno results/video
[Re: sogtx]
#584374
01/17/10 09:31 AM
01/17/10 09:31 AM
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Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
Steve1118
master
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master
Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
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Dave, I know you guys are limited by rules regarding oiling systems.
A lot of folks say that kind of rpm's is a no-no with an internal pickup system. I notice no external pickups.....is there anything special you do to the oiling system to make it live?
"Old age and treachery trumps youth and enthusiasm, every time!" East Central Director / Chrysler Power Magazine www.reasbeckracing.webs.com
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Re: F.A.S.T. Hemi dyno results/video
[Re: Steve1118]
#584375
01/17/10 09:45 AM
01/17/10 09:45 AM
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Joined: Jan 2003
Posts: 1,894
N of Detroit
DaveDudek
OP
top fuel
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OP
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N of Detroit
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Quote:
Dave, I know you guys are limited by rules regarding oiling systems.
A lot of folks say that kind of rpm's is a no-no with an internal pickup system. I notice no external pickups.....is there anything special you do to the oiling system to make it live?
For the last 3 years all i have ran is a stock oil pump (no hi-volume or pressure) and the stock pick-up. I didn`t notice it in the car but the oil pressure drops 5 lbs from 6000 to 7500 RPM.
Dave Dudek 1st Factory Stock legal car in the 10`s!!! [/b] FAST & Factory Stock Rules: www.fastraces.org FAST 69 Hemi RR 9.98@139
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Re: F.A.S.T. Hemi dyno results/video
[Re: scatpacktom]
#584377
01/17/10 09:58 AM
01/17/10 09:58 AM
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Joined: Jan 2003
Posts: 1,894
N of Detroit
DaveDudek
OP
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OP
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N of Detroit
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Quote:
When you told me how much torque the engine made I thought you were confused...Now i'm the one confused
Yea, after looking at actual dyno results it seems odd that a engine with all stock stuff (modified, of course but restrictive none the less) and 496 cubes made a low peak TQ number and close to 6000rpm to boot, carried 750HP from 7000 to 7500 RPM and never fell off. Cam is 248/256 on a 114.
I`ve been shifting at 7500, maybe it would go faster shifting higher yet??
Dave Dudek 1st Factory Stock legal car in the 10`s!!! [/b] FAST & Factory Stock Rules: www.fastraces.org FAST 69 Hemi RR 9.98@139
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Re: F.A.S.T. Hemi dyno results/video
[Re: DaveDudek]
#584378
01/17/10 10:09 AM
01/17/10 10:09 AM
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Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
Steve1118
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master
Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
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"For the last 3 years all i have ran is a stock oil pump (no hi-volume or pressure) and the stock pick-up. I didn`t notice it in the car but the oil pressure drops 5 lbs from 6000 to 7500 RPM."
That's with the MP 6qut oil pan, correct? Any scarpers or any such animal? Has there been any sign of bearing issues when the motor is disassembled?
Just wondering. Thanks!!
"Old age and treachery trumps youth and enthusiasm, every time!" East Central Director / Chrysler Power Magazine www.reasbeckracing.webs.com
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Re: F.A.S.T. Hemi dyno results/video
[Re: Steve1118]
#584380
01/17/10 10:33 AM
01/17/10 10:33 AM
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Joined: May 2005
Posts: 6,446
NJ-USA
HPMike
master
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master
Joined: May 2005
Posts: 6,446
NJ-USA
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Quote:
"For the last 3 years all i have ran is a stock oil pump (no hi-volume or pressure) and the stock pick-up. I didn`t notice it in the car but the oil pressure drops 5 lbs from 6000 to 7500 RPM."
That's with the MP 6qut oil pan, correct? Any scarpers or any such animal? Has there been any sign of bearing issues when the motor is disassembled?
Just wondering. Thanks!!
Steve,FWIW,
On an engine I built for FAST, he generally runs 6,800-7K through the traps. I have incorporated some oil mods,(scraper, unidirectional screen,"blueprinted" pump and a 3/8" pickup), stock pan but nothing exotic. I have never seen any bearing issues on teardowns.
MB
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Re: F.A.S.T. Hemi dyno results/video
[Re: DaveDudek]
#584381
01/17/10 10:39 AM
01/17/10 10:39 AM
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Joined: May 2005
Posts: 6,446
NJ-USA
HPMike
master
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master
Joined: May 2005
Posts: 6,446
NJ-USA
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Quote:
Quote:
When you told me how much torque the engine made I thought you were confused...Now i'm the one confused
Yea, after looking at actual dyno results it seems odd that a engine with all stock stuff (modified, of course but restrictive none the less) and 496 cubes made a low peak TQ number and close to 6000rpm to boot, carried 750HP from 7000 to 7500 RPM and never fell off. Cam is 248/256 on a 114.
I`ve been shifting at 7500, maybe it would go faster shifting higher yet??
I guess that torque number kinda explains why the car launches and gets out as well as it does. 
MB
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Re: F.A.S.T. Hemi dyno results/video
[Re: DaveDudek]
#584384
01/17/10 01:20 PM
01/17/10 01:20 PM
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Joined: Feb 2005
Posts: 4,311
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,311
Prospect, PA
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Quote:
Yea, after looking at actual dyno results it seems odd that a engine with all stock stuff (modified, of course but restrictive none the less) and 496 cubes made a low peak TQ number and close to 6000rpm to boot, carried 750HP from 7000 to 7500 RPM and never fell off. Cam is 248/256 on a 114.
I`ve been shifting at 7500, maybe it would go faster shifting higher yet??
FWIW - in my car, because of the large rpm drop at shift recovery, especially between 1st and 2nd, the car is fastest shifting about 600 to 700 rpm over peak hp. I'm sure its a function of the power curve after peak, and the torque converter. Because of my unique converter choice, this would probably not apply to most cars. but I thought I'd pass it along.
Thanks for share all this info!
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Re: F.A.S.T. Hemi dyno results/video
[Re: DaveDudek]
#584385
01/17/10 03:19 PM
01/17/10 03:19 PM
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Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
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I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
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Quote:
OK, after 3 solid years of racing I finally pulled the Hemi out to be freshen up, with help from Jeff were gonna try to find a few more HP`s to keep the Mopars out in front yet another year.. 
I took the Hemi over to Modern Clyinder Head a couple days ago and today we fired her up to get some "before" results before we tear into her. After about 160 passes, 7500 shifts, 7700 through the traps, here`s what she did. We did not move the timing or jet the carbs as of yet. Click here to see dyno sheets: Dyno Sheets Click HERE!! 770HP
For video click picture below:
Just thought you guy`s might enjoy it...
That's inspirational! Thanks Dave!
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Re: F.A.S.T. Hemi dyno results/video
[Re: scatpacktom]
#584386
01/17/10 04:09 PM
01/17/10 04:09 PM
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Joined: Oct 2004
Posts: 1,752
detroit area
moderncylinder
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top fuel
Joined: Oct 2004
Posts: 1,752
detroit area
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Quote:
Daves car knocked the mains out no too long ago. That can't be a good sign
actually the "car" didnt knock them out,, he runs a babbit main,, babbit bearings wont usually go 50 runs because they are soft,, he just left them in too long,, has nothing to do with oil pressure/aeration or anything other than # of cycles
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Re: F.A.S.T. Hemi dyno results/video
[Re: VanishPt]
#584390
01/17/10 09:10 PM
01/17/10 09:10 PM
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Joined: Jan 2003
Posts: 1,894
N of Detroit
DaveDudek
OP
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OP
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N of Detroit
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We will be doing more dyno pulls, these were just the initial results pulled right from the RR. I`ll be stopping by Modern tomorrow.. We will be leaning out the carb a ton, moving valve lash and i`ll be waiting for a special package from Joel Nystrom. Were hoping for a for a nice HP increase once the package arrives, from there i`ll be leaning on Jeff heavily to find HP.. We (the Chrysler camp) will need everything we can get to stay near the top next year.
Dave Dudek 1st Factory Stock legal car in the 10`s!!! [/b] FAST & Factory Stock Rules: www.fastraces.org FAST 69 Hemi RR 9.98@139
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