Dyno sheet from Mesa
 

Here is my dyno sheet from My 572 ci 700hp n/a motors that Las Mesa is building for me to go into my 2000 Tiger.

I m not a motor head, so I figured Id post the results and let the experts here post there comments

RPM HP TORQUE
3040 375.0 647.8
3114 391.8 650.7
3201 417.0 684.3
3301 457.9 728.6
3410 471.3 725.9
3507 470.9 705.2
3604 478.7 697.5
3712 488.8 691.6
3809 492.1 678.6
4005 511.8 671.1
4116 524.9 669.7
4205 538.0 672.0
4313 558.4 679.9
4402 578.0 689.6
4517 597.7 694.9
4602 609.9 696.0
4702 620.8 693.4
4803 634.8 694.1
4903 656.3 703.0
5008 674.1 707.0
5112 691.6 710.5
5208 698.9 704.8
5307 712.8 705.4
5409 723.3 702.3
5501 726.3 693.4
5603 716.7 671.8
5704 713.1 656.6
5801 711.9 644.5
5904 711.3 632.8

Las is going to set the rev limiter at 5600. I am using Throttle up and plan on using a 5 blade Hydromotive px to run at 52-5400 rpms max

Tell me what you guys think. Good ,bad ??

Re: Dyno sheet from Mesa
 

Great numbers, what fuel did they run? I would turn em a lttle tighter 5,400- 5,600 with a 5,800 limit.

Re: Dyno sheet from Mesa
 

93 octane

Re: Dyno sheet from Mesa
 

Thanks Fred. I expect the Dana exhaust to show up tomarrow at the shop. Cant wait. They anticipate running the boat on Saturday in Miami

Re: Dyno sheet from Mesa
 

Otis,

Those are very good numbers.

I just built my 500EFI's and it is quit interesting the comparision. I sent you a PM, check it out.

Look forward to meeting you at the FBC Miami Boat Show Poker Run.

Doc

Re: Dyno sheet from Mesa
 

Congrats Bob!!!! You must be really excited for the upcoming season. Have you figured out when your going to arrive in Miami yet? We will be there from Wed noon thru Monday evening.

Re: Dyno sheet from Mesa
 

Otis, I like what I'm seeing from Mr. Mesa. Because I'm male, I am told that I am very visual so therefore I need pic's. I would also like your opinion of the P-5's. Doug

Re: Dyno sheet from Mesa
 

Pictures will have to come from Las. BTW, Im a male too. WTF does that have to do with anything. You aint hitting on me are you ??? lmao

As far as the P-5'S go. Ill answer that ?? in a few days once I get down there and run the boat

Re: Dyno sheet from Mesa
 

Chuck, Im flying down for a few days next week. Then Im coming home and driving back down on the 21st for 10 days. Ive got to drive back home Just in time to a catch a plane to the Bahamas for a week

Looks like are paths wont cross in Florida unless I hold off until Wednesday and Thursday to fly down and run the boat

Re: Dyno sheet from Mesa
 

[QUOTE=otis311]Pictures will have to come from Las. BTW, Im a male too. WTF does that have to do with anything. You aint hitting on me are you ??? lmao

No, I think I've spent to much time around women telling me why I do things? Doug

Re: Dyno sheet from Mesa
 

flat torque curve!

Re: Dyno sheet from Mesa
 

728 lbs at 3300 , nice !!!!

Re: Dyno sheet from Mesa
 

Otis, you should be really happy with those numbers....the torque curve is awesome----very impressive! Congrats and have fun!!!

Re: Dyno sheet from Mesa
 

Would you be willing to share the cam specs for that impressive motor?

Re: Dyno sheet from Mesa
 

Laz Mesa really knows what he is doing....and he is a great guy too.....you all considering re-powering your rigs should check him out at the Miami Boat Show.

Re: Dyno sheet from Mesa
 

PLanning to ........ :drink:

Re: Dyno sheet from Mesa
 

:eek: :D see you on the lake.

Re: Dyno sheet from Mesa
 

Ausome! there is no replacement for displacement!

Re: Dyno sheet from Mesa
 

I'll get you guys some pics just as soon as I finish the project we're under the gun to finish before the boat show because I'll be tied up that week but I haven't forgotten you guys I have great pics and dyno footage I'd also like to post.Sincerely yours Laz Mesa

Re: Dyno sheet from Mesa
 

Las, Can you post the spec sheet and all the specifics of the engines for the boys here. Im being asked alot of questions that I cant answer

Brand of crank
size of cam

you get the idea

Re: Dyno sheet from Mesa
 

WoW looks like you 'll have me... I'm getting scared.... well maybe not as scared as your Bravo's with 720# of torque at 3300rpm... :D:D:D

Sounds good Bob I hope you have fun.

Re: Dyno sheet from Mesa
 

congrats, impressive numbers! :drink:

Re: Dyno sheet from Mesa
 

Frankie is upgrading the XZ's to XR's

Im really not to worried though. with the kind of boating we do and the Lake that we run on, either bravo will probably be alright if the cooler stays full (know what I mean)

Besides, thats what I bought a spare drive for...... just in case

Re: Dyno sheet from Mesa
 

Bob,

Very impressive numbers. I hope that everything comes together great for you. The boat should be sweet. Still planning on hitting Sacandaga this summer? July 23rd?


Chris

Re: Dyno sheet from Mesa
 

For what it's worth:

Re: Dyno sheet from Mesa
 

Its on my calander Chris. Ill be there

Re: Dyno sheet from Mesa
 

Las,
Nice numbers. Question, you have a similar drop in torque that I have noticed in several other engines ranging from 502 to 588 CID in and around the 3100 to 3600 or so range. Do you have an opinion on what it may be?

Chris

Re: Dyno sheet from Mesa
 

Very good numbers! Some details would be great! Compression and cam would be good to know. I know some of this stuff is proprietery! :p

cstraub,
Do you think the slight dip in torque is is due to the transition between primaries and the secondaries? Just a thought. It will be interesting to hear what Laz has to say!

Craig

Re: Dyno sheet from Mesa
 

Craig,
You see that dip at various points in both N/A and forced applications I have been looking at this in many engines for some time now trying to figure the relationship in the range of the dip and the mechanical configuration of the various engines. I think it has much to do with the interaction of camshaft overlap and exhaust design. Perhaps on N/A it has to do with mild combustion chamber/exhaust imbalance at a certain frequency, and blow thru in a forced application. You see it in nearly every engine. Great numbers Laz.
Bob

Re: Dyno sheet from Mesa
 

The drop in torque you generally see on my dyno reports comes from the fact that my dyno is a manual brake system rather than a computer controlling the brake action I make the brake stop the engine the way I want and it generally does that drop because I start at a steady state RPM higher than were I want to start which is at a lower RPM generally 1000- 1500 RPM lower the reason I do it this way is because over the years I've noticed that the engines make peak cylinder pressures lower in marine engines and I want to make sure the engine will not set the det. sensor off at cruising RPM or under acceleration. It's just the way I run them for that type of testing. I always say the dyno is a tool that gives more then numbers of power and when used effectively can produce excellent results. Many people use computer controlled brake dynos they are the norm now days but I prefer this type of set up because I believe it's more effective for marine engines thats my opinion the other units also work well. It's very impressive that you saw that very few people actually notice that. Thanks for the question Laz Mesa

Re: Dyno sheet from Mesa
 

Las,
RMbulder and I were discussing this issue several weeks ago and now since you have posted some of your numbers it is apparent. I understand the load situation, I grew up on a SF901 in the 80's. Since then I have had the privledge to learn a great deal from French Grimes on water break and inertia dynos.

The drop is apparent in different combos with different carbs, intake and such. When discussing this the only apparant constant is firing order. I understand what you are saying on the initial load of engine, but the dyno figures we have are from DTS, Super Flows, Land and Sea, and Stuska's.

Since the RAM effect in these engines useally takes place between 3000 and 3500 I believe it has something to do with that. These engines all have large bores and fair long arms in them, so as the weight of the incoming air column contines to pack the cylinder as the piston comes up and the valve closes, I think the intake pulse is slightly disturbed. Just spouting my theory.

Chris

Re: Dyno sheet from Mesa
 

Great. I look forward to seeing you there. Spread the word, everybody and anybody is welcome to attend.

Re: Dyno sheet from Mesa
 

What headers did he dyno with? yours or test headers?

Re: Dyno sheet from Mesa
 

This is intended to be a theoretical question and not a slam against Laz or anyone else as I would DAMN PROUD of those numbers...

Given that Otis was aiming for a 5200-5400 max rpm engine, would he not benefit slightly if the cam were ever so slightly smaller?

If this were a shorter stroke motor (or going into a car) I would love to turn that motor to 6k with that HP graph. I can only assume that a slightly smaller cam might make it slighly stronger and more efficient within his intended RPM range.

Is that a valid assumption?

Again, considering all of the variables, he was right on the money with his setup and NOBODY should complain with the HP that he achieved.

Re: Dyno sheet from Mesa
 

Peak HP at 5500 RPM seems pretty darn good to me! I would think the boat with that motor would be faster at 5400 - 5500 than 6000.

Re: Dyno sheet from Mesa
 

I would Like to place my Order for two ....... :drink:

Re: Dyno sheet from Mesa
 

Why not turn them 5800-6000. I've always been told rpm's are speed. This would also allow for a smaller wheel giving more midrange. Just a thought.

Re: Dyno sheet from Mesa
 

The Torque and HP falls off after 5500 rpms. So I dont see why I would want to turn any higher and put more strain on my equipment. As far as mid range, with the 5 blade I have decided to run and those torque #'s, my midrange should be my strongest point

Re: Dyno sheet from Mesa
 

His headers . We are having some installation issues with mine as we speak. Numbers shouldnt drop off at all with what I chose. Dana Torque flows

Re: Dyno sheet from Mesa
 

Nice Bob :cool:.

When are you testing?

Bobby