new itb turbo setup build pics
 

We (dave and I) are building an itb turbo setup for a friend of ours, after a long day working, we looked at the progress and were pretty pleased. So naturally some pics have to be shared with the HMT posse.

http://www.student.ru.nl/p.oonincx/web/IM004511.jpg
Again using two head gaskets and a decompression plate to reduce the cr.
http://www.student.ru.nl/p.oonincx/web/IM004541.jpg

http://www.student.ru.nl/p.oonincx/web/IM004545.jpg

http://www.student.ru.nl/p.oonincx/web/IM004550.jpg

The turbo is pretty small (td04 from a impreza), anything bigger would not fit anyway ;D. The setup should be finished next weekend, a dyno session has been planned for sunday so more pics then. Also a nice opportunity to put my own itb setup on the rollers.

Pieter

Re: new itb turbo setup build pics
 

------- crazy.

Re: new itb turbo setup build pics
 

very nice work :thumb up:

Re: new itb turbo setup build pics
 

Pieter the mad scientist of Peugeots. Lol, thats awesome man. Keep up the good work.

Re: new itb turbo setup build pics
 

Hey how much does a Cosworth Escort Mk V cost over there?

Re: new itb turbo setup build pics
 

Now that is some good HMT ---- right there. Boosted ITB's will own.

Re: new itb turbo setup build pics
 

hot ----... if i was him id have a t3/t4 stickin out the top of the hood with the compressor inlet facing forward... ahha anything can fit if u want it to

Re: new itb turbo setup build pics
 

:'( ALOT

Re: new itb turbo setup build pics
 

nice work guys O0

Re: new itb turbo setup build pics
 

very nice..i was thinking about working on itb turbo this summer...how much do the itb setups usually cost? do you get them from ebay?

Re: new itb turbo setup build pics
 

Looking good Pieter.
I should really come check out your stuff one day.

Re: new itb turbo setup build pics
 

As way say in Holland;

ziet er goed uit :)


looking good

Re: new itb turbo setup build pics
 

hmm, not really digging the plenum, You'd think you would want the velocity stacks directly at the bottom of the plenum, so the transition would be smooth?

I'm just curious because I've noticed full-race is doing a similar design on their custom intake manifold with raised stacks inside the plenum.

http://www.full-race.com/prototype/i...00/s2000-4.jpg

Vs something a bit more common inside the plenum

http://www.cheesefrog.com/frog/cfintake_13.jpg

http://www.cheesefrog.com/frog/cfintake_10.jpg

Looks good though =)

Re: new itb turbo setup build pics
 

Looking good Pieter.
I'm coming by next week to see how it is and maybe come to the Dyno to :)
I'll give you a call before next weekend

Re: new itb turbo setup build pics
 

looks good, but i agree with jeff about the velocity stack sticking out interrupting the flow. also, by closing in itb's, you're really doing nothing more than converting them back to a regular intake mani :-\

Re: new itb turbo setup build pics
 

not really, when boosting, it allows each TB to get a more even flow off air,

rather than the runner closest to the single TB getting better flow than the last.

i belive some nissan bluebirds came like that...ITB w/ turbo.

Re: new itb turbo setup build pics
 

Actually, having the stacks sticking out into the plenum is a good thing. It allows the stacks to suck in air from a greater surrounding volume area (rather than just from the front). For best results full radius donut shaped stacks are required, but half radius stacks benefit from the same.

We also made a tapered shaped airbox to further enhance flow distribution between the different runners.

Regards! Dave (co-creator)

Re: new itb turbo setup build pics
 

what do u use for managment?

Re: new itb turbo setup build pics
 

if you look at the newer bmw motors it looks like they have ITB's with a plenum on the outside of em just like that.

Re: new itb turbo setup build pics
 

yeah, but under boost, the engine won't be sucking air in, the turbo will be forcing air in, therefore, under boost, it seems to me like the velocity stacks will actually be interrupting the flow. your point is valid for when the engine is in vacuum, but i don't think it really applies to when there's positive manifold pressure.

Re: new itb turbo setup build pics
 

Actually it was the Nissan Pulsar GTIR that came with ITB and a t28. No stacks inside just like a normal intake manifold. I'd have to say the same thing as Jeff and Teg on this one. Take the stacks out and give them to me for my NA ITB setup. How much can you get those for anyways?

Re: new itb turbo setup build pics
 

that engine bay makes me clausterphobic :-X .

You get a nice setup there, I'd say try the setup with and without the velocity stacks, that way you can see if it makes a difference in power/response.

Re: new itb turbo setup build pics
 

i say you dyno it with the stacks in, then with them out :D if thats possible

nun the less the fab job is incredible, awesome job man :) looking forward to seeing that dyno.

Re: new itb turbo setup build pics
 

damn that looks great man. Have you guys seen Tony The Tiger's ITB high cr turbo gsr setup over on honda-tech? I've seen videos of it and the throttle response is insane.

Re: new itb turbo setup build pics
 

But the e46 m3 isn't boosted. :(

i'm redoing my itb setup as well. u guys got me thinking, cuz like jeff said, i thot it would be better for the boost to flow directly to a face that has the funnels flush with it. i've seen both setups and now by clicking this topic i'm in the middle of trying to catch this curveball.

we need an engineer!!

WHICH IS BEST?? ???

Re: new itb turbo setup build pics
 

dunno about that, since they are all still pulling from one opening at the end instead of 4 seperate ones when you run regularly run itb's

Re: new itb turbo setup build pics
 

looks good, eventually I want to change the manifold im running. but all in good time.

Re: new itb turbo setup build pics
 

It's finished! New pics:

http://www.dp-engineering.nl/cars/serjon/motor2.jpg
http://www.dp-engineering.nl/cars/serjon/motor3.jpg
http://www.dp-engineering.nl/cars/serjon/motor4.jpg
http://www.dp-engineering.nl/cars/serjon/motor.jpg

let us know what you think ..


Gr. Dave

Re: new itb turbo setup build pics
 

That's some nice ----!

Does it drive in Nijmegen?

Let's make a Home Made Turbo meeting soon ;)

Re: new itb turbo setup build pics
 

the finished setup is very clean :o

Re: new itb turbo setup build pics
 

Very clean man.
I like it.

Re: new itb turbo setup build pics
 

looks good!!!!!!

Re: new itb turbo setup build pics
 

you european guys are ------- insane >:D ...........great job

Re: new itb turbo setup build pics
 

looks really good. do you have any more pics of just the intake finished? that plenum is pretty big!

Re: new itb turbo setup build pics
 

crazy idea just came to mind..........

cant you make a mani like a 4-1 header so all the trumpets converge into one pipe off of the intercooler???
that should def be even airflow

Re: new itb turbo setup build pics
 

Jeff,
IIRC this question came up in the Endyne forums talkin about manifold design. Larry's answer was that older intake designs raised the stacks away from the plenum wall to keep turbulent boundary layer flow out of the ports. He also said that proper radiusing of the plenum to runner smoothes the transition enough to prevent turblent flow in the runners. He also posted a formula for determining the correct radius diameter for the best flow but, alas, I have forgotten it.

FYI The belly scoop on the P-51 Mustang was raised away from the fuselage for the same reason.

Re: new itb turbo setup build pics
 

The finished mani looks good.
I agree with t0n. Let's get a Dutch HMT meeting. ;D
Keep it up.

Re: new itb turbo setup build pics
 

you european guys are doing some pretty ------- sexy work.

Re: new itb turbo setup build pics
 

This is the number one misunderstood concept when people think about forced induction. It leads to ideas like "Under boost a heavier flywheel makes more power" and other ---- like that. So here is how it works...

Air flows because of pressure differences, always from high to low. The larger the pressure difference the greater the volume you flow for the same setup. Also the higher the pressure the more dense the air (PV=nRT for the nerds).

As your piston moves down the stroke it creates a lower pressure because the volume is increasing (Think of your lungs filling with air, ribs and diaphragm expand, increase volume, air from high outside pressure (14.7 psia) to low (lung pressure)). On the manifold side, in NA (WOT) the pressure is equal to the atmospheric pressure (~14.7psia (14.7psi above full vacuum)). Under boost its 14.7psia+boost pressure (so 10psi boost = 24.7psia)

Air flows from the intake manifold in NA and boost not because its being forced or sucked but because it is flowing from the high pressure manifold side to the low pressure cylinder side. All the same rules of flow are the same for FI and NA. The only difference is under FI the density of the air is higher (PV=nRT again) and the pressure difference is higher.
NA==> 14.7psia Manifold--> 0psi* Cylinder (*The cylinder pressure starts at 0 and equalizes as it fills to its equal to manifold)
FI++> 14.7+Boost Manifold --> 0psi* Cylinder

Oh and the Europie is right about the trumpets in the manifold. It allows air that is even behind the stack to be drawn around and flow into the stack. Slight increase in flow.

Re: new itb turbo setup build pics
 

the rb26dett we just dropped in a 240 is like that, its f'ing crazy... it uses banks of 2 throttle plates connected to one metal throttle linkage, and all three connected to a throttle rail. prob. the most meticulously engineered production engine i've ever seen. :P