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S60R Custom Intake Manifold


dougy

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Very nice work

thank you.

Looks good, definitely interested in your driving impressions!

thanks Andy, it seems quicker and it does have a different sound / louder...i really hold any value to one describing how much harder it pulls, that's just retarded so i'll stop here....but for me the only way to measure is 1/4 mile, since i did not dyno prior.

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thanks Andy, it seems quicker and it does have a different sound / louder...i really hold any value to one describing how much harder it pulls, that's just retarded so i'll stop here....but for me the only way to measure is 1/4 mile, since i did not dyno prior.

Still waiting for some decent pics...

With my setup, it was a night/day difference over stock, it was easy to feel the difference up top. Perhaps yours still needs work. Using the stock runners may not be helping, since they are all a little long & uneven in length.

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Still waiting for some decent pics...

With my setup, it was a night/day difference over stock, it was easy to feel the difference up top. Perhaps yours still needs work. Using the stock runners may not be helping, since they are all a little long & uneven in length.

that's all i got, wish most that post would host this nice of roast pics...

i never said i don't feel a difference, i feel a big difference ;)...so lets not start to over analyze just yet " im not the one that will start to describe how i feel it pulls super duper hard" and then go to track and end up running 14 seconds 1/4 mile..you know what in sayin?

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that's all i got, wish most that post would host this nice of roast pics...

i never said i don't feel a difference, i feel a big difference ;)...so lets not start to over analyze just yet " im not the one that will start to describe how i feel it pulls super duper hard" and then go to track and end up running 14 seconds 1/4 mile..you know what in sayin?

Whatever. Personally 1/4 mile time is not a good indicator, given that launching needs care. We're not talking about off the line performance, we're talking upper end. In that specific 1/4 mile, I ended up with the same trap speed as the V8 AWD BMW, that had a 2 sec better 60 foot1/4 mile time. Know what I'm saying??? :lol:

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I think the comparison of Hussiens older style m4.3/4 intake to custom that had bigger improvement vs. Douches newer style ME7 intake to custom isn't that drastic is more that the updated intake is better flow than the original.

I'd be curious to see if anyone has compared old to new.

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So why you build the new one 8x larger in volume. Is it that necessary or because you can so you went with that.

first intake was not made by me , it was torn apart and repaired by me but once done , every time i looked at it , it just annoyed me ...so I wanted to make a cheapest intake possible and a simplest design from my head aaand at the end I am glad I did.

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First of all, great craftmanship!!

I wish I could weld that way.

Very interesting project too.

Certainly, at really high rpm's upto 8000 RPM the stock intake manifold has a tendency to choke the engine.

But there is a little more to it then just enlarging the plenum at random I'am afraid.

There is some rather complicated physics involved, in which the volume and shape of the plenum, length and width of the runners are all playing their part. Pressure pulses which are travelling with the speed of sound and valveopening wich are or aren't in sync. Turbulence influencing the mixture of fuel and air etc etc. And with each rpm range the effects of these are different.

Engine designers spend a lot of time and money to get a reasonably balanced result. Even with them there is still lots of trial and error involved.

Of course this all certainly doesn't mean that your new intake manifold wouldn't give you the performance improvement you want from it.

Could still very well be that it does (in fact: I really hope it does seen the labor you've put into it), since in turbo applications the runner design is somewhat of less importance then with NA engines and the plenumvolume is of more influence . Still ... also a larger plenum can have its drawbacks.

But I agree with Husein that the 1/4 mile isn't a good indicator, for it could be that the improvement in performance at higher rpm are to much at a cost of performance in other rpm ranges. Without acces to a dyno it's very difficult to get a well balanced intake manifold design.

An interesting discussion on the subject on the physicsforums:

http://www.physicsforums.com/showthread.php?t=80364

(but stay out of the Helmholtz equations, they are a serious threat for mental health)

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thank you Piet, i dont weld anymore I pre-fab everything and take it to my welder...not worth my time.

Piet....i simply tell you to use your common sense and look at all the all auto manufacturers and the mistakes they make with their designs ...and I really love for you to be in that meeting where all the VOVLO engineers met and design this intake ...plenum and runners air volume ect... ....you would only then understand what though process and calculation went into to this design...it went something like this....the big boss stepped in the meeting room and said " design an intake that will fit in all turbo models." and here you have the results lolol

horrible design...runners as well...really...give me a brake here...:)

DSC07932_zps515072a6.jpg

DSC07933_zps89d7ba6b.jpg

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