I don't have time to get into specifics right now but check out the goods. I'll elaborate when I have time. Enjoy!!!

-Lance Mayhon

 

Nice......... Nice.......

I'm suprised nobody ever put these into large scale production.

 

Any photo's inside the plenum? specifily where the individual runners meet the plenum? Everyone seems to have a different way of doing it, im always curious to see yet another way.

 

Other peoples designs were cheaply made and lacked proper sizing. My setup is geared toward my 42r setup. It incorporates flush velocity stacks, wide radius bends, and a properly sized plenum. It wasn't a cheap project but I'm more than happy with the outcome! I doubt I could produce these as they utilize A LOT of machined parts.

 

I saw it in person. It's a nice piece. Keep us updating when you fire the 42r up.

 

Are those summit ign boxes?

 

The first shot is the flush mounted velocity stacks machined to my spec's. Second are some shots of the flange I used to mate to the lower. It has .002" recess to keep the tubing centered with out using a tube to telescope. More pictures will come when I have time. Thanks for looking!

 

Looks great! Did you do the welding? When are we going to see some numbers? Whats the displacement on that plenum?

 

Very nice. Too many people put the whole stack inside the plenum and that just not the optimal placement for boosted engines.

 

^You're a smart man. Many people don't know this! Raised velocity stacks only belong in N/A applications.

 

Yes, the welding was done by yours truly. Not my best work, my Miller 250 DX Syncrowave took another dump (I'm going to sell it soon). I had to get out the oldschool Lincoln 175 NON WATER COOLED. Anyway, I'm honestly down to just welding up the rest of the 4" v-band exhaust and wiring up the throttle position sensor and we're good to roll! I'll get the plenum volume to later via pm. It's finally time for me to sleep.

 

Oh really, how much are you going to be asking for the 250? All I've got is an air-cooled EconoTIG... I'd love to upgrade to a water-cooled rig!

 

Looks good Lance, I feel bad I couldnt partcipate in the project and machine some stuff for you..Sucks not having access to the CNC lathe and mill over summer

 

Lookin good. Similar in design to one I made a while back.

 

^ Lets see your pictures!!!

 

Similar basic design concept except I went with a one-piece manifold and obviously steel..

Inside:


All done and powdercoated:




Installed post revisions and still n/a... (thicker engine flange and added tapered sections before the bends into the motor..)

 

What kind of gains did you notice with the additions of the tapered sections?

 

The motor was not tuned yet so I can't say about additional gains. I had it out and it just seemed like the logical thing to do.

 

looks real good. keep us posted when it hits the dyno.

 

I love people are pming me thinking I copied someones design. This is obviously not the case so I'll spell it out for the non technical thinkers here. You have to have a 90 degree bend to meet the lower intake and obviously you should have a plenum. My plenum volume is calculated... Not just cut and thrown on. Also my runner ID's and lengths have been accounted for. I'm using velocity stacks unlike a taper like everyone else's manifolds. As for the flanges the tb flange is 1" thick and the upper to lower intake flange is 1/2"! The acual plenum itself is 1/2 drawn aluminum. All of these components and tubing are all from high grade 6061 aluminum.

 

Don't worry about the haters. They just don't posses any fabrication skills. The majority of the fabricated manifolds are going to look similar.

 

Yeh from the outside only where it does not matter!


Here are my copies also!







And for the copy cats here's something new to copy!

 

^Damn, is that going to be a one-peice cast design? Cores are going to be a bitch for that...

 

intreasting velocity stacks in that ams manifold

wonder how they came to that staggered arrangement

 

Perhaps for companion cylinders? Looks interesting. I really hate cast components unless they spent some good r&d on the mold.