My buddy made a intake manifold for his 7mgte supra engine and tuning it has been a real bitch. AFRs will jump all over the place with a smooth fuel curve. He made these trumpets from carbon fiber and has them raised a little right before the ports on the engine. This thread has made me think he should re-think his intake manifold.

 

Does the inside of your friends intake look like the one that's been pictured in this thread? If not i would say that's his best bet over those stacks.

Could you take a picture of the manifold and post it? I could possibly pick it apart a little just by looking at it. We've done a few for the 7m's and have gotten really good power out of them.

Our (Virtual Works) Supra intake has hours and hours of flow bench testing to get the best possible flow and balance (which is very very important for tuning). That's also what we did with the one i have on my RX7. Lots of things can affect the flow......i mean LOTS!

 

Like the POS 'Veilside Intake Manifold'. The first time I saw one I knew that it would have problems and after tuning with one I was 100% convinced. You should see the made in china replica of the same intake. You have to be blind and dumb to even consider using it.

 

Here is a old pic I took while he was in the pocess of making the intake manifold. Picture a flat piece ~6"tall and the length of the head bolted to the pictured intake then those trumpets epoxied to the flat piece leading into the ports. He then rolled a piece of sheetmetal that had a 1/3rd dome to it that tapers towards the back ports. At the front of the intake there is a flange and a single blade 3" TB.

I'm starting to wonder how the exit of the trumpets blend with the intake posted, I'd imagine it would be hard to do.

I wish I had some more pictures. I'd ask him to go out the the garage and take a few for us but he's in Germany at the moment

 

I really didn't want to be the one to mention those since they seem to be our "competition" but since you did...... yes those are HORRIBLE examples of an intake manifold. I do use the word "competition" very loosely.

I can't believe people still use them!! They are so terribly unbalanced....makes tuning an absolute nightmare.

 

Throttlebody placement can make or break an intake mani. We found that just rotating the tb 10-20* made or lost 25+cfm which is pretty substantial. Also the tb angle of entry is pretty important as well.

I can tell you that on our n/a mani's we use the factory runners just slightly modified and then ported. On the turbo model we had to make completely new runners with a taper to get the best possible flow. If he's going to use the factory runners then he needs to have a rolled edge like the author of this thread has pictured. That would be a must in my eyes.

 

Here are some pics of the intake manifold on Ground zeros supra. Note, the dual throttle bodies and then 6 pipes go into the plenum, so that all valves per piston get equal flow. pretty bad *** setup and has made 1000+ hp at the wheels. Kudos to ground zero, hope they dont mind me posting pics. Just for fun, the last pics, is of a ka24 block that experienced a little to much boost... .

CJG

 

So when are you going to start selling RX-7 manifolds?

 

nm

 

Funny you guys bring up the veilside, I have a stroked RB26 were putting together and the guy insisted on his veilside manifold, even after I told him we could do better. Oh well...

-S-

 

If it was up to me then they would've been done months ago but it's not. We were trying to get the Supra completely dialed in before starting back on my project but nothing ever seems to go as planned. We did do pretty good last week by running a 8.34 @ 172.....so the Supra got parked for a few and the Rx7 went up on the lift.

To answer your original question......i have no idea. It will hopefully be within the next couple of months.

 

Nice work Aaron Look forward to seeing it in the fall assuming I'm passing through there

-Chris

 

thanks chris, how's your project coming along?

 

silvr94r2 got any pictures? i miss this thread so shes coming back to life!!!

 

also do you think making a manifold out of stainless would be bad? i know its going to retain heat longer... i was planning on having it ceramic coated and having a ventend hood and some sort of air routed to it from the front end. i some hope of keeping it cooler.

 

I made a plenum for one of my cars last year, was turbod and running GSX1000 throttle bodies. Had trumpets inside and ran really well.
Sorry about the pic size.

 

pretty nice welds... lol it almost looks like an exhaust. welds look thick is it aluminum?

 

I didn't weld it, a friend did. I dont have a AC tig but made all the parts to weld together.

Worked well.