This weeks Mesa Project 670 hp
 

OK I haven't posted anything lately here is a quick fix for this week this is one of our MB650na based on a 540 ci Dart block Lunati rotating assembly custom cam and ported Brodix heads I used a 9022 holley with a Dart intake for ease of use this engine made from 3000rpm to 5400rpm over 600 ft lbs of torque at 5500 rpm it made 599 ft lbs we are trying another port configuration with our standard camshaft design and were making more torque for a longer period and the engines are idling like taxi cab motors I made 16 pulls on this engine and used 6 gallons of fuel this is due to our new o2 sensor set up in each port with the stager jet set up I have in this engine we've picked up power all up and down in the RPM range . As far as I know this o2 set up is being used only by manufacturers and I can see why it's expansive as hell but it works a blind man can tune with this set up. Hope you guys enjoy. Sincerely Laz Mesa

Re: This weeks Mesa Project 670 hp
 

The pics above include the block with the rings individually filed fit in each bore the finished short block and the finished head after cc'ing each chamber. And these are after coming out of the spray booth and on to the dyno cart for installing accessories and wiring .

Re: This weeks Mesa Project 670 hp
 

Another excellent engine by Mesa. One day I'll need to get me one of those engines Laz!!

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Wow thats a sweet Pantera your getting rid I think thats one of the best boats out there .

Re: This weeks Mesa Project 670 hp
 

nice numbers but whats with the pink starter? is this for a chicks boat??? sweet set up with the o2 sensors, laz

Re: This weeks Mesa Project 670 hp
 

This O2 sensor set up it's been out for a while but just recently has it come down in price for a working person to be able to afford it I've heard of manufacturers using it and the second it was at my reach I jumped at the opportunity to purchase it for development purpose here in the shop the way it works is there is a O2 sensor in each cylinder pipe so the person can fine tune the carb or specifically the efi set ups . You are able to track it through the rpm range and it works separate to the dyno it runs off the comp in it's own program.

Re: This weeks Mesa Project 670 hp
 

Here is the finished engine at the cabinet shop ready for shipping with all accessories and custom wiring harness installed .

Re: This weeks Mesa Project 670 hp
 

Love the pics! How are those rocker arms holding up?

Re: This weeks Mesa Project 670 hp
 

What back4more said. Are those Jesel Sportsman Series rockers? Also what comp. ratio are you running Laz?

Re: This weeks Mesa Project 670 hp
 

Laz I see you said your trying different port configurations.

Are you doing this or Dart?

And are you seeing much difference than there standard CNC port configuration???You must be doing a lot of R&D on getting these #'s

Rob :drink:

Re: This weeks Mesa Project 670 hp
 

We've been running the Jesels in our Poker run engines since they came out we haven't had any negative experience from them they hold up like everything they build. The port designs we're buying heads with their ports we modify them from there to get the velocity and volumes we're looking for and then send them back and have them digitize the port for our next job . This is expensive and time consuming but it's paying off with good numbers. That's what it's going to take to stay ahead in this game.

Re: This weeks Mesa Project 670 hp
 

Laz thats a lot of time playing on a flow bench .That Porting gets old after awhile :D

Good luck

Rob :drink:

Re: This weeks Mesa Project 670 hp
 

After some bugs that needed worked out with this engine and our boat, we thought we were finally ready to post how really happy we were with this motor. Not as fast as everyone had predicted - 70.4 GPS in our Baja 272. BUT, exactly one month to the day after Laz's warranty ran out, we had a lifter fail which wiped out the cam. Not sure yet what other damage there is. Only 29.1 hours on the motor.

Re: This weeks Mesa Project 670 hp
 

How much hp was your motor on the dyno that got you to 70.6 and what prop were you turning. What brand lifters failed,parts do break once in a while ,too bad it happened after only 29.1 hours? I had a rocker nut crack allowing lifters to get loose and bend a pushrod and screwed up a set of lifters in my 540 last year after about 20 hours BUT luckily nothing else got damaged. My 540 previuosly to my current engine made 630 hp/700 ft lbs on the dyno with cmi headers and my 272 ran mid 70's before turning the boost up more and going to a 12 rib blower drive,Smitty

Re: This weeks Mesa Project 670 hp
 

HP on the dyno was 624hp/607ft.lbs. at 5400 rpm's. We were running a 24p Bravo. The lifters are Cam Motion.

Re: This weeks Mesa Project 670 hp
 

what kind of oil cooler is that.................

Re: This weeks Mesa Project 670 hp
 

I don't know. Laz never told me what make oil cooler he uses.

Re: This weeks Mesa Project 670 hp
 

Have you tryed a 3 blade 25 or 27 mirage with your stock drive height my baja ran better with the 3 blade. you should be getting 73 to 74 out of it. with over 600hp

Re: This weeks Mesa Project 670 hp
 

You said you wiped out a cam after a lifter had failed. Sounds like you had the engined dyno agian at 624hp once you replaced the cam after the lifter wiped it out. (???) I am only asking because of the title of the thread..."This week's Mesa Project 670hp"

I lost a lifter in the middle of the summer as well...but I was blessed enough that it didn't do any damage to the cam or any further damage than just the lifters themselves. Otherwise it could have been much worse! I was using the high grade Comp Cams lifters, but replaced them with the Morel lifters.

Re: This weeks Mesa Project 670 hp
 

that was mesa that started the post with 670hp not e 272 if that helps :D

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4 years ago my 540 made 630 hp/697 ft lbs of tq on the dyno with cmi headers,not dyno headers. I was extremely dissapointed with what motor made (it wasn't on laz mesa's dyno or anything to do with him) but I have the same exact boat-a baja 272. The boat ran mid 70's before touching the motor or tune after it came off the dyno. This motor had a supercharger and made almost 100 ft lbs of tq more than eagle 272's,it went 4 mph faster than his,his speed although dissapointing is very realistic for the power he is making,Smitty