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Results for latest 572 build!
#607078
02/07/10 03:18 PM
02/07/10 03:18 PM
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Joined: Dec 2008
Posts: 603
Central Oregon
Rodney
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 603
Central Oregon
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follow this link for our lates results. Testing was done on our Stuska Engine Dyno After we improve the fuel system some and jetting hopefully the slight loss in HP and torque @ 6000 - 6200 we will adjust the cam timing to see how the 572 responds to more or less. jetting on the 1150 4500 is now f103 r105 Thanks for taking a look. Any advice on this project is welcome. more info on the car is Here.
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Re: Results for lates 572 build {thanks to Cab}
[Re: Rodney]
#607079
02/07/10 03:51 PM
02/07/10 03:51 PM
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Joined: Feb 2007
Posts: 6,295
U.S.
moparniac
master
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master
Joined: Feb 2007
Posts: 6,295
U.S.
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426cfm head flow out of a 440-1 ? congrats on the dyno numbers...
Mopar Performance
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Re: Results for lates 572 build {thanks to Cab}
[Re: moparniac]
#607080
02/07/10 05:50 PM
02/07/10 05:50 PM
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Joined: Dec 2008
Posts: 603
Central Oregon
Rodney
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 603
Central Oregon
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Quote:
426cfm head flow out of a 440-1 ? congrats on the dyno numbers...
Ray Barton gave us the #'s {and did the work}
Thanks.
after looking @ the graph I'd like to know what and why that strong start on the last sweep
The only change was fuel pressure since I noticed a drop in pressure on the previous tests.
More fuel and larger jets? 
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Re: Results for lates 572 build {thanks to Cab}
[Re: Rodney]
#607081
02/07/10 07:38 PM
02/07/10 07:38 PM
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Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
Old School
super stock
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super stock
Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
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rodney,what inertia factor did you use?
68 cuda formula S 588" bb 5sp
70 CUDA CONVERT 500" 5SP (SUBLIME)
70 CUDA CONVERT 500" 5SP (PLUMCRAZY):TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!
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Re: Results for lates 572 build {thanks to Cab}
[Re: atoetly]
#607085
02/08/10 10:03 AM
02/08/10 10:03 AM
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Joined: Dec 2008
Posts: 603
Central Oregon
Rodney
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 603
Central Oregon
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The 63 will be! The advantage of being the wrench and driver of course MY car will be ready. as for the GTX and the 69 Dart sure hope so? I'm sure going to need some help to make it all happen. I'm going in for surgery on my left hand and wrist this week. Arg. Am going to do what I can with one hand for a while. Help wanted: GOOD MOPAR Mechanic  Did some more reading and research and found that a cross over tube in the exhaust may help the choppy Torque readings {don't really think thats the problem in this case} after a fresh set of plugs and the improvements I made on the ignition yesterday I will make a few more sweeps and then change the cam timing. I also read that this could cause the torque to be doing the dip.
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Re: Results for lates 572 build {thanks to Cab}
[Re: Rodney]
#607086
02/08/10 08:52 PM
02/08/10 08:52 PM
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Joined: Dec 2008
Posts: 603
Central Oregon
Rodney
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 603
Central Oregon
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4 more tests changed timing and adjusted the valves. looks like its coming around but the Carb may needs a visit to a "good" carb shop. I talked with a few today and all says they can fix it for the bigger cu in. says its not uncommon. I'm just wanting to send it to the correct shop the first time. Thanks for taking a look. The results are HERE 
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Re: Results for lates 572 build {thanks to Cab}
[Re: moparniac]
#607090
02/09/10 08:44 AM
02/09/10 08:44 AM
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Joined: Sep 2008
Posts: 2,840
Flint, Michigan
B1Fish540
master
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master
Joined: Sep 2008
Posts: 2,840
Flint, Michigan
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Quote:
426cfm head flow out of a 440-1 ? congrats on the dyno numbers...
if all your #s are acurate, you have the best flowing -1s in the country. Congrats, thats a very cool 63 and makes a ton-o-steam! 
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Re: Results for lates 572 build {thanks to Cab}
[Re: Old School]
#607091
02/09/10 09:41 AM
02/09/10 09:41 AM
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Joined: Dec 2008
Posts: 603
Central Oregon
Rodney
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 603
Central Oregon
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Quote:
Quote:
I've only had the 3 x on the engine.
its ported and matched to the heads.
have you had your engine tested?
yeah it made 874 hp and 790 tq.it was done on a stuska dyno also.they used a inertia factor of .32.thats why i was asking about that.my build is very similar to yours:
580"
14.16 cr
572-13,s 388 cfm @.800"
440-3
1120 dominator
solid roller .800" [Email]290@.050[/Email]
1.7 jessel
our hp and tq curves are very similar also. 
I'm just getting a grasp on testing engines on my Dyno. I have plenty to learn best way is experience and studying. I have communicated with the Tech staff @ Stuska plenty and have had them on the phone while setting up and doing sweeps. A headset on the phone is priceless when doing this.
I'm not afraid to ask questions and STOP when I need help. Steve {Stuska Tech} and I have gone over the settings several time and inertia factor as guidelines below from the manual: Quote:
Trial and Error Method
Alternatively, a trial and error method can be used for finding a system’s inertia. This method involves entering an estimated
inertia value and then comparing the horsepower vs acceleration results from a few consecutive sweep tests. To
begin, start by entering one of the following inertia values into the software:
Small Block Engine = 0.25 Ft-Lb-Sec2
Big Block Engine = 0.32 Ft-Lb-Sec2
Run a few consecutive sweep tests and compare the results. Looking at the RPM, horsepower, and acceleration, the power
readings at each RPM for all the tests will be approximately the same if the correct system inertia was inputted. If the power
readings are higher on the tests with higher acceleration, then the inputted inertia value is too high. If the power readings
are lower on the tests with higher acceleration, then the inputted inertia value is too low. Increase or decrease the inputted
inertia value, as required, and repeat until similar inertia values are achieved, regardless of the acceleration.
As Steve puts it the 4.5 X 4.5 bore and stroke engines are a BIG big block this is why we increased the inertia factor to .36. I am also using an aluminum fly wheel to help absorb harmonics and dampen the vibration, both the engine and dyno components benefit from the flywheel. doing the trial method for calculating inertia is how I came up with .36.
When I started using the Dyno last year I looked at the results from the previous operator, He never once changed the inertia settings 
Of course the numbers were not correct but if the settings are never changed results can still be used for testing and comparing when changes are made in the engine and retested. . I have good knowledge of computers which has been a great deal of help. putting it all together is another story. there's a lot going on and a lot to think about when doing sweeps. Just like drag racing the best classes and learning are by doing and when something is wrong or I need help I am the first one to stop and try and solve the problem.
could you post your sheets or fax them to me?
It would be good if you can do this I can go over them. Steve and I could possibly calculate your # with an increased inertia to better compare my engine to yours.
do you have the volumetric efficiency #'s from the dyno sheets? they would have had to have the mass air flow meter installed on top of the carb. for this. We had to have an adapter made for the larger Dominator top size. Today we {Cab and I} are going to do some more testing and I will have the mass air flow installed for a sweep or two. From previous sweeps I've made on this engine it did not like the meter on the engine. But once I get the engine running smoothly and confident everything is good I will install the mass air flow to get that data. I'm sure glad I have a new barrel of 118 fuel to use for testing the 572 uses just about a gallon of fuel for each sweep.
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Re: Results for lates 572 build {thanks to Cab}
[Re: B1Fish540]
#607092
02/09/10 09:48 AM
02/09/10 09:48 AM
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Joined: Dec 2008
Posts: 603
Central Oregon
Rodney
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 603
Central Oregon
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Quote:
Quote:
426cfm head flow out of a 440-1 ? congrats on the dyno numbers...
if all your #s are acurate, you have the best flowing -1s in the country. Congrats, thats a very cool 63 and makes a ton-o-steam!
Thanks,
I've asked Dave at Barton's if they had the flow sheets on these heads since they are the shop that repaired and ported them after they were hurt several years ago. Of course its been long enough that information was not found.
Dave said it was possible that they had that kind of #'s. As the owner of the heads said, they should flow good for what it cost to have the work done!
I guess some day I will have to have then re tested to confirm the numbers. Its really not an issue to me what the flow #'s are so long as I can get a combination that works together... Right?
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Re: Results for lates 572 build {thanks to Cab}
[Re: Rodney]
#607093
02/09/10 12:39 PM
02/09/10 12:39 PM
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Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
Old School
super stock
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super stock
Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
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rodney i do not have any ve results,we did not test that.his o2 sensor went bad during my pulls,and we had to switch to my hand held.it was not accurate.when i chassis dynoed it,it was rich.11-1 or so.with jetting i was able to pick up 27 more hp.for a total of 874hp and 790 tq.it made 707 at the wheels,using 19% driveline loss. heres the engine dyno sheet.
Last edited by Old School; 02/09/10 12:43 PM.
68 cuda formula S 588" bb 5sp
70 CUDA CONVERT 500" 5SP (SUBLIME)
70 CUDA CONVERT 500" 5SP (PLUMCRAZY):TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!
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Re: Results for lates 572 build {thanks to Cab}
[Re: Old School]
#607094
02/09/10 12:40 PM
02/09/10 12:40 PM
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Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
Old School
super stock
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super stock
Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
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other one..if you cant read them or need more info pm me with a fax # and i can send all the sheets
Last edited by Old School; 02/09/10 12:48 PM.
68 cuda formula S 588" bb 5sp
70 CUDA CONVERT 500" 5SP (SUBLIME)
70 CUDA CONVERT 500" 5SP (PLUMCRAZY):TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!
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Re: Results for lates 572 build {thanks to Cab}
[Re: Old School]
#607095
02/09/10 01:14 PM
02/09/10 01:14 PM
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Joined: Dec 2008
Posts: 603
Central Oregon
Rodney
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 603
Central Oregon
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We would really like to know who did the testing for you. the acceleration rate is very fast FYI with a larger # in the inertia your #'s will be larger. did they have a flywheel installed? Thanks for posting the sheets all good information what jetting are you using and are the power valves installed or blocked?
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Re: Results for lates 572 build {thanks to Cab}
[Re: Old School]
#607097
02/09/10 11:36 PM
02/09/10 11:36 PM
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Joined: Dec 2008
Posts: 603
Central Oregon
Rodney
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 603
Central Oregon
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That's good. Humbling results today spent another 1/2 day working on calibration and checking and rechecking settings on the dyno to find my results as most of you already we suspicious of were high. After Re-calibration of the torque arm I discovered just about 100 hp correction. the new Dyno sheets tell the story. its all good now! couldn't be happier with how the 572 is running now and with a little more testing tomorrow we may find a little more. It's finally time to work on the cam timing. Thought I was going to do that Monday but things have a way of dictating just how long it will truly take. today's changes to the engine: Leak down test was good one step colder plug installed 4.5 Power Valves front and rear and with some tuning have 98 square A/F ratio within limits Best of all a huge difference in fuel consumption {for the better} from the previous sweeps. Good thing! the fuel barrel is getting a little low. Thanks for taking a look.
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