the famous next week lol

 

i like my design better than theirs...its more of an OEM look but still has better floe characteristics....i had some things i had to yesterday so i didnt get a chance to mess with it more...Kinetix look like the ruuners are still a little to long...and again i wonder if they have velocity stacks in the plenum......

 

It is interesting that you used two example of turbocharged cars to draw design similarities from.
Intuitively one would think that a more symmetrical design (space permitting of course) would lend itself better to even flow distribution for NA applications.

Are you using CFD software for the flow calcs or doing it by hand?

 

That's interesting, love to see the numbers. I'd say their runners are still a little too long and I bet they arent using velocity stacks, to save cost, but that's just a guess.

If I can't get anyone interested in working with me on some dyno testing then this is all a waste of time though. I'd even like to test one on a turbocharged maxima as the gains would surely be even greater for those guys.

If someone would like to meet me in NW arkansas or Tulsa even we could make this work, I think those are the closest dynos to me.

allen

 

If you ever decided to do a 3.0 manifold I would be more than willing to provide before and after dynos.
I have dynos with my stock manifold
Dynos with MEVI

 

prolly by hand.....although i am going to try and simulate flow in inventor if i can

 

hey Allen there are prolly going to be more 3.0 volunteers than 3.5 at the moment..most of the 3.5 guys are set on the 350z plenum

 

You may be right. If the 350z plenum works out well then this idea may not be worth while. How many would pay 3-500$ for my proposed IM when they could get the Z IM for 2-300$, probably none.

allen

 

200-300 plus cutting the hood plus other things will be the same price
remember this is only the start and for sure a lot of people will show interest if gains are there.

 

i would if the gains were worth it and like Virg said i woudlnt have to hack up my hood....even a 00VI and MEVI end up being in the mid 400s after everything is bought and put on....so a direct bolt-on design with the same if not better gains to me is worth it. cause honestly i would ratehr mod my 3.0 than do a swap.....

 

Either way, the more options the better for everyone. In the mean time, I'm waiting to see how the Z33 IMs dyno.

 

i would rather buy a bolt-on than have to cut my hood up

 

I definitely agree with you there and Allen's IM would be the top of my list if it comes through, but my point was that more options are better than less, provided the gains of each are worth it.

 

Pretty much...

 

cutting the hood you can do yourself. Other things? like what?

i understand people don't want hoodscoops, but I would sacrifice some looks for speed, and who knows, it might look decent.

The 350z IM is a direct bolt on.

 

go to the dyno and show gains. until then, we still don't know if it is worth it.

 

no a direct bolt-on would mean not have to mess with different TB...EGR TUbes....Injectors...stuff like that...i am talking about taking the upper IM off and puttin the new one and and using all existing 3.0 Ish

 

not for the 3.0 guys =(

 

350z IM is a direct bolt on to the 3.5, I never said anything about putting it on the 3.0

TB is exactly the same, bolts up fine. You use the stock injectors of the 3.5, no need to mess with the fuel rail.

 

I'd be interested in this if the gains are there. The price you are throwing around is definitely right.

 

I'm interested in Allen's intake manifold...

As for the 350z IM, I would go that route if I had my stock hood....but I don't....and I'm not willing to shave off my already weak & fragile as he!! CF hood...but the whole idea of getting a complete 350z IM for $250ish and another $100 or so for custom straight piping is tempting....

 

Allen any updates??

 

Well, I'm trying to finish the intake on my S14 currently so I can finally get it on the road.

Bottom line, if I decide to do this I'll most likely do one first for a fully prepaid customer. Once it's completed I'll ship it to him/her with an agreement to dyno test as soon as it's installed. That way I don't have 10 deposits for a design that is unproven. You can imagine the crap I'd be in if I had several deposits and the intake didn't dyno very well, I'd have a ton of people wanting their money back.

If it dyno's and drives well and people feel good about the hp gain vs. cost then I could go forward with copies of the original.

allen

 

Allen, what are you using as a base? If you have a 00VI to go by Id see if you could do similar runner length and/or plenum volume, and bump it up by about 15-20% or so. (what ever the increse is from 3L to 3.5L, it would give a good starting point) I looked at some dynos from 3.5's with VI and they make alot of TQ but because they are trying to pull more air through a 3L designed manifold its just making more TQ, with a varible switch over optimised for 3.5's Im sure it would be a huge advantage. But thats more heavily modifying the 00VI and not a custom manifold

But thats what I was going to do with my 3L, to just move the TQ curve up in the rpm range. Im hoping to have peak power in the 72-7500 range with power up to about 7700. But I need to do more research on the revabiliy of the VQ30 though.

~Alex

 

Alex,
This thing is fully custom from the flange on up. I'm using the stock lower intake manifold though.

I'm just experimenting w/ the volume and runner length on this one (the one for my S14). Once it's dyno'd I'll know what to do differently on the next one if anything and those lessons will help on the design of the first Maxima intake.

allen

 

how's this project going? you think you'll have something ready for the summer? i'm really hoping you can design one for us 3.0 guys

 

I would love to see numbers compaired to a DE-K manifold...

Another 3.0 interested in an IM.

 

Got a question... what is stopping a fwd VQ35 owner from using the crawford intake plenum for the rwd vq35? Is it solely based on fitting under the hood? Or is there a major difference in the manifold design between the two?

 

Nothing.. It should still fit even though the front part of the plenum is taller.

 

I'm in..........

 

Heard hood clearance is the only issue

 

Sorry guys, I've had to put this idea on the back burner for now. I've got too many projects going at once. If I started this I wouldn't be able to give you guys the service you deserve, I don't want to start any manifolds until I'm confident I could turn them out in a very timely manner and with top quality.

It's on the burner, just on the back for now.

allen

 

Oh well, hopefully not for too long.

 

Just saw this thread, I am only about 3 hours away from you, and there are dynos here in STL.
Let me know if this thing is a dead issue.