got the flange/runners from JMF, thanks!
surge tank is going to be RMR 5" 'D' extrusion





i wish i had argon/helium mix but im all out.

 

Is it me or that flange is warped..?
Nice lill project there.
GL

 

it will be surfaced after its all welded up.

 

Nice, you should make a 1" thick steel plate to bolt it too before welding. Looking good, mind sharing how much the head flange was? Better priced then rmr?

 

200 i believe. i had to do a tiny bit of port matching, nothing bad though.

 

So why didn't you just get the Ross machine racing for 25$ cheaper?

 

didnt know they sold evo flanges.

 

Random question, but pertains to intake manifolds/ flange design. If manifold flanges are not available for a certain motor (in my case the 2jz), is it ok to have the flange inlet in a simple oval? And then have the injector bungs slightly upstream on the runners @ a 45* angle? Plans are to just get a flange cut somewhere, and obviously when you start putting injector bungs built in the price starts to skyrocket, let alone finding someone who would put that kind of time into designing it for one person.

Just worried about having the flange in a strict oval shape, and wonder if a half circle at the top of the oval is required to properly distribute the fuel over the valves. Just wondering how people usually do it with a 2d flange.

 

yeah just get a flange cut on a jet and then weld ur runners on. once they are good go ahead and take it to a machine shop and have them mill some 3/4" holes into the runners where u want them or in the corner were the runners are welded to the flange (thats how i do mine) at about a 40 degree angle and then weld in ur bungs. once welded in trim them down inside the runner and blend them into the roof. then u will also have to figure out how ur going to mount the fuel rail, whether its making mounts for them off the head flange or on the plenum side either will do just fine.



sorry about putting the pic up in ur thread russian, not trying to thread jack or anything (personally i dont like posting that pic because ive gotten much better since then lol)



mike

 

Cool, thank you for the response! Does the fuel not atomize properly if done further down the runner? I really just hate welding to cast aluminum, not to mention hate the way the factory flange looks. I dont like the factory runners, and it will be so much easier to just start with a flange that is cut for RMR runners, than to have to mess with the stock BS. I really appreciate the response, and sorry for thread jacking. Get that extrusion welded on!

 

no prob

 

you can put it down the runner. guys that run dual rails have their second set of injectors a few inches from the head.

 

Yea, i noticed that. I just figured there must be a reason that people put their injectors so close to the flange like with this evo. I guess its ideal, not necessary.

 

 

Wow, nice welds, and really good looking setup. Why was the D extrusion cut on runners 3 & 4?. Or 1&2, or whatever it is.

 

when i ordered it, came in wrong size cut, didnt have time to wait for a new section.

 

Why didnt you weld and blend the base of the plenum into the runners?

 

thats what i was thinking, or just use there oval stacks? customer being cheap? other than that looks good. and tanner, the oem's put the injector right there so it sprays on top of the valve for starting purposes i believe (or something to that effect). there shouldnt be any problem with putting it back and inch or 2.


mike

 

if its the customer not paying for It I can understand that, even though blending it in should be standard practice. Id still like to see a test on a high hp motor with the oval stacks in the plenum vs a blended smooth transition. John Marcella builds the best sheetmetal intakes in the world and all of his transitions from plenum to runner are just nicely blended.

 

Judged off all the tests I have seen on evo intake manifolds and different designs, I would say not using a velocity stack, that this wouldn't make any power over the stock one. And if it does it would be only over 9,000 rpms. In no way am i bad nothing your work as the welds and fitment look clean, just that only a few have had good results with sheet metal intake manifolds on evos. Post more pics of the exhaust mani! Keep it up