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Old 09-17-2009, 11:52 AM   #751
leoimpreza
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Quote:
Originally Posted by sku81 View Post
old thread i mite aswell bring back up
twin intakes(yes running staggered volicity stacks)(twin core IC set up)with itb's.PMS2.6 with Precision 6765
still along ways to go..2yr's and counting

Kris
Nice set-up!!! More pics please!!!
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Old 09-17-2009, 12:21 PM   #752
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D Money, have you looked into the N/A 2.5i manifold? I have some pictures of mine a few pages back. It is not as clean looking as the Cosworth manifold in those pictures, but I have since shaved all the unnecessary parts off and now it looks quite good. I'll post some pictures of it, as it sits now, in a day or so.

Also, I've only got $375 in it so far. This includes, buying the factory manifold, having fuel-rail adapters made, welding/machining the TB mounting plate, and buying a grinder and wheel to shave all the unneeded crap off the manifold.

I asked Andy about it and he said they are known to make more top-end power.

Last edited by CKxx; 09-17-2009 at 12:33 PM.
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Old 09-18-2009, 03:38 AM   #753
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Nice set-up!!! More pics please!!!
nar,Ive been told its all wrong so i will throw it all in the bin and start again

Kris
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Old 09-18-2009, 09:26 AM   #754
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^^^

I didn't mean to kick sand towards you. It was posted asking why so many don't even crack a book into manifold design before dumping money into a project.

Yes, it looks pretty.
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Old 09-18-2009, 07:57 PM   #755
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^^^

I didn't mean to kick sand towards you. It was posted asking why so many don't even crack a book into manifold design before dumping money into a project.

Yes, it looks pretty.
books
funny thing is Ive talked and emailed over the last 3 yrs ppl who build drag motors and track motor who also make manifolds for super tourers here in Aus and in south east Asia and so on about flow data and idea's on twin and single intake's on Subaru and other style's of flat 4's and 6's..and 90% of the feed back was along the line's off what Ive done.(the other 10% said make a custom single intake..what Ive also done b4 for other ppl)
Also please note Ive read your posts from when you started on this forum and im happy not to listen to your input as i like real world input and not books and reading on the internet...please don't take offense to this,Ive been playing with Subaru's a little longer than you and have actually done the work b4 and don't just talk about"what i would do IF" and "IF i could"...Get out and do it b4 you try to use big words and try to make your self look better than the next person..

And yes Ive also read what allot off ppl have said about you on here

Best of luck with your own car..I hope it gets on the road,and all your idea's work and you get a great result.

PS you can also read my reply to your first post after i post the little pic,I have some info in there off what R&D i/we did into different manifolds(intake and exhaust) we did b4 starting what ive done today.I think its back a page or two by now...btw we test parts b4 we jumped into building parts..we just didn't just read a book..we tested it

No hard feeling,And best of luck with your vendor ship on here.



Kris

Last edited by sku81; 09-18-2009 at 08:06 PM.
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Old 09-18-2009, 11:29 PM   #756
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does anyone know what the two holes are used for on the left side and the one underneath it to the left? Will i need these for my 2.5L hybird motor or can i cut them off? I want to trim all the stuff i don't need off the mani!

thx

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Old 09-19-2009, 02:43 AM   #757
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The lower left hole is where the EGR comes in from the head, and I the two holes together are where the EGR valve sits. I have EGR on my N/A, but I was under the impression the turbo cars don't have EGR. I could be wrong.
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Old 09-20-2009, 09:44 PM   #758
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Quote:
Originally Posted by Patrick Olsen View Post
The lower left hole is where the EGR comes in from the head, and I the two holes together are where the EGR valve sits. I have EGR on my N/A, but I was under the impression the turbo cars don't have EGR. I could be wrong.
This is correct. I have since shaved most of that stuff off, and had it welded shut. You won't need any of it for a WRX/STi.
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Old 09-20-2009, 09:47 PM   #759
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This is correct. I have since shaved most of that stuff off, and had it welded shut. You won't need any of it for a WRX/STi.
can you post a pic if that please? i need some kinda of reff as what to cut off and what i need to leave!

THX
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Old 09-21-2009, 09:45 AM   #760
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books

No hard feeling,And best of luck with your vendor ship on here.
No hard feelings at all...just be sure that the people you got your data and opinions from understand that each plenum would see back to back 'draws'.

I by no means meant to imply that the dual plenum was the issue; simply which cylinders were paired together.

Best of luck on finishing up your manifold.

P.S. Just because I don't share what hard test data I've found doesn't mean that the real world data hasn't been collected
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Old 09-21-2009, 10:26 AM   #761
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Didn't Jun's hyperlemon have the same type of plenum setup?

Also, regarding back to back draws, is that even a problem if he is running IBTs? The "plenum" will just be air chambers for ITB of each bank, so I'm not sure it would matter would it?

Leslie.


P.S. This is so beyond my understanding ATM that I will appologise in advance for sounding like a nub
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Old 09-21-2009, 10:31 AM   #762
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No, back to back wouldn't be an issue so long as the plenum does have sufficient volume for the displaced air. With ITB's and forced induction, its not nearly the concern of an NA platform (where most of my manifold experience is)...

Yes, this appears to be much like another Jun Lemon replican/rendition.

I still wish the best of luck.
With a few years of engine lab work and testing (a lot has changed since I first joined the site) think you might find better results and would find smaller plenum sizing as powerful if paired with a spaced firing order.
With those ITB's, response shouldn't be much of an issue

Last edited by Homemade WRX; 09-22-2009 at 09:43 AM.
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Old 09-21-2009, 12:11 PM   #763
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can you post a pic if that please? i need some kinda of reff as what to cut off and what i need to leave!

THX
I don't have any pictures right now, but if you are looking at the manifold it is pretty clear what is useless. On mine I left the EGR valve mount ("EGR Valve," below), but I plugged it, and tapped it for my boost gauge signal since it comes from the center of the manifold (not that it will really make it more accurate or anything...). If you wanted, you could chop it right off (the valve mount) and just grind away the pathway on the underside of the manifold. You would also have to remove the "pipe" in the center of the manifold, and have that hole closed up. Again, this will all make sense if you are holding the manifold and looking at the bottom.

In the picture below,
#1 - EGR IN - I simply lopped off and ground away.
#3 - Material that used to mount the distributor, I also chopped this away w/o issue.
#4 - Casting lump that looks vaguely like a mailbox - DO NOT grind this to below 1cm from the runner! I'm guessing it is related to the casting of the manifold, but I tried to grind it smooth and cut away a hole into the manifold, even when grinding several mm above the plane of the runner!
#2 - Y-Pipe vac source, one on each side - These are pretty easy to remove with an easy-out. They can have a plug pressed in, or be tapped and shut with an NPT plug, if you'd like.

Since you have an STi (with DBW throttle) you won't have to do many of the other mods I needed to make this thing work.

Also, don't be surprised if the manifold-to-head bolt holes don't line up well. My inner bolt holes were dead on, but the outer ones had to be open up quite a bit.

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Old 09-21-2009, 12:24 PM   #764
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-Edit-

Deleted because photo got changed by imageshack.

Last edited by CKxx; 03-09-2010 at 09:07 PM.
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Old 09-21-2009, 09:25 PM   #765
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^^^^^^^^ cool thx man that was very helpful! Looks good silver!
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Old 09-21-2009, 09:56 PM   #766
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Quote:
Originally Posted by Homemade WRX View Post
think you might find better results and would find smaller plenum sizing as powerful if paired with a spaced firing order.
With those ITB's, resonse shouldn't be much of an issue
Again, excuse my noobness, but with turbos and ITBs, don't you want the "plenum" to be as close as possible to the ITBs - ie. like the old RB26 GTR design?

Leslie
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Old 09-22-2009, 05:11 AM   #767
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Originally Posted by Homemade WRX View Post
No, back to back wouldn't be an issue
Yes, this appears to be much like another Jun Lemon replican/rendition.
With those ITB's, resonse shouldn't be much of an issue
Correct,this is what ive gorn for/JUN set up basically sat on the itb's with no runners.
Quote:
Originally Posted by wrxsti.l View Post
Again, excuse my noobness, but with turbos and ITBs, don't you want the "plenum" to be as close as possible to the ITBs - ie. like the old RB26 GTR design?

Leslie
Come's down to what rpm your after and room Leslie..but GTR is what i copied(don't tell Nissan)
Tell let the cat out off the bag,I just got 2 hypertune SR20 alloy plenum casting's off them,cut them to what size i wanted(to suit the area between the runners from the TGV's) and run 55mm ida trumpets and 54mm runners..sounds easy but try it your self..
2.6 with itb's with twin plenum's turbo mounted in front off the motor for evo style exhaust header length with about 5" all up IC piping..
aim= stuff all lag useing a GT35R based turbo.

Kris
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Old 09-22-2009, 09:28 AM   #768
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Sounds awesome Kris, so when will you be firing that beast up?
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Old 09-22-2009, 10:15 AM   #769
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Kris, I can't lie. I am quite anxious to see how your setup will react with the ITB's and the short exhaust manifold!!
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Old 09-22-2009, 11:42 AM   #770
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Old 09-23-2009, 05:55 AM   #771
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Sounds awesome Kris, so when will you be firing that beast up?
going to Al's on friday to do headers,as my car is need to do some stuff for Tino's rice box
Just waiting for new housing from awd motorsports and thats that..then to ARE for the cooler and PMS for a couple off little ecu change's(and new TPS and MAP) and off for run in tune.
Off to japan in a couple off weeks so need to get car moving else i will send my car $$ acc on new stuff.

Yes seeing if any improvents in "lag" compareed to my old set up and some feed back or if it works as i can try other manifolds in some other cars to see if any gains or not...its only time and cash..

Kris
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Old 09-23-2009, 06:56 AM   #772
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How long are you spending in the land of the rising sun?

Is the holiday that one from the Autosalon magazine, $5K japan holiday visiting all the motorsport places, secret drift spots, tuners workshops etc?

Anyhoo, so in a few weeks it'll be running? Are you going to run it in on the dyno and get it over and done with in a couple hours or are you going to drive the bassid around for a month

So if all goes well, we can expect a "proven power" thread on your beast before the end of Oct with some more photos, your dyno results, some 1/4 times and some video footage ey

Leslie
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Old 09-24-2009, 03:47 AM   #773
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damn... Satan car )))
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Old 09-24-2009, 04:41 AM   #774
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How long are you spending in the land of the rising sun?

Is the holiday that one from the Autosalon magazine, $5K japan holiday visiting all the motorsport places, secret drift spots, tuners workshops etc?

Anyhoo, so in a few weeks it'll be running? Are you going to run it in on the dyno and get it over and done with in a couple hours or are you going to drive the bassid around for a month

So if all goes well, we can expect a "proven power" thread on your beast before the end of Oct with some more photos, your dyno results, some 1/4 times and some video footage ey

Leslie
Nar none of that crap..just a trip to buy some more parts to bring back..nothing special...and sex tour also
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Old 09-24-2009, 08:57 AM   #775
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going to Al's on friday to do headers,as my car is need to do some stuff for Tino's rice box
Just waiting for new housing from awd motorsports and thats that..then to ARE for the cooler and PMS for a couple off little ecu change's(and new TPS and MAP) and off for run in tune.
Off to japan in a couple off weeks so need to get car moving else i will send my car $$ acc on new stuff.

Yes seeing if any improvents in "lag" compareed to my old set up and some feed back or if it works as i can try other manifolds in some other cars to see if any gains or not...its only time and cash..

Kris
hahahah ur getting ur **** done quicker now cos of my rice burner..
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