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Who has installed a lager turbo??
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morghen  



Joined: 21 Jan 2005
Posts: 7785
Location: Romania

PostPosted: Mon Nov 14, 2016 6:10 pm    Post subject: Reply with quote

I didn't mean in front of the belts, I mean just enough in front of the factory position so that it clears the steering thing.
You can always move it to the intake side like the GTR cars have it.
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WEASEL149  



Joined: 19 Aug 2005
Posts: 592
Location: UK, Sheffield

PostPosted: Mon Nov 21, 2016 8:31 pm    Post subject: Reply with quote

You're heading in the right direction with EFR and twinscroll.

Not easy, especially with RHD but should be a beast when complete

You'll get fantastic response. Just keep header I.D. size reasonable; don't go big or you'll just lose response.

Agree with Cedric; don't get too hung-up on equal length as keeping the pulse energy separate is the important thing.
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The craig  



Joined: 13 Nov 2015
Posts: 8
Location: Brisbane Australia

PostPosted: Thu Nov 24, 2016 7:57 pm    Post subject: Reply with quote

This is mine that i have made up it still needs finishing but it puts the the turbo in frint of the enginevehere you dont want it
URL=http://s187.photobucket.com/user/_ckb/media/20160416_150711_zpsnqeno7wg.jpg.html][/URL]




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morghen  



Joined: 21 Jan 2005
Posts: 7785
Location: Romania

PostPosted: Thu Nov 24, 2016 8:04 pm    Post subject: Reply with quote

that looks pretty good...only downside is you're putting a lot of strain on the head studs with that big overhang of the turbo.
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WEASEL149  



Joined: 19 Aug 2005
Posts: 592
Location: UK, Sheffield

PostPosted: Thu Nov 24, 2016 8:25 pm    Post subject: Reply with quote

Nice manifold. You can always add extra overhead turbo support/brace later.

Which Garrett are you using?
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Paulyy  



Joined: 05 May 2014
Posts: 87
Location: Melbourne

PostPosted: Thu Nov 24, 2016 8:48 pm    Post subject: Reply with quote

I'll try get as equal length as i can with same amount of bends with out pulling my hair out, but i do understand the concept with split pulsing.

Nice work Craig,

If it was a street car, i would have just put it in front and not worried about it to much. But because track car, I want ducting out from the radiator to the bonnet so trying to keep as much space at the front free. Also Less weight at the front of the engine. Not like it'll make much of a difference but i suppose it will help.
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The craig  



Joined: 13 Nov 2015
Posts: 8
Location: Brisbane Australia

PostPosted: Fri Nov 25, 2016 8:37 am    Post subject: Reply with quote

Thanks guys my first attempt at a manifold so I was happy with the result
I am looing at additional bracing as there is a lot of leverage there
it a Garrett GTX 2863
pauly sorry not trying to hijack your thread
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lildude4life  



Joined: 27 Apr 2015
Posts: 11
Location: Milwaukee WI

PostPosted: Sat Dec 10, 2016 12:31 pm    Post subject: Reply with quote

I put a EFR 6258 on mine in pretty much the standard location. Original thought was in fact to do an equal length manifold but it just wouldn't fit. After tons of research, I just decided to make the most compact manifold I could because the added benefits of an equal length system are so small, that even if it was tuned, they don't out weigh the headache of making it fit.

Heres what I came up with:


The 6258 uses a T25 flange so while I didn't "need" to make it a twin scroll, I designed the manifold to behave like one. Hence why cylinder 4's pipe comes up and over and meets up with cylinder 1 before the merge.
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WEASEL149  



Joined: 19 Aug 2005
Posts: 592
Location: UK, Sheffield

PostPosted: Mon Dec 12, 2016 5:00 am    Post subject: Reply with quote

Your set-up is sweet lildude, love it
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Mike9311  



Joined: 14 Dec 2004
Posts: 650
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PostPosted: Mon Dec 12, 2016 5:42 am    Post subject: Reply with quote

lildude4life wrote:
I put a EFR 6258 on mine in pretty much the standard location. Original thought was in fact to do an equal length manifold but it just wouldn't fit. After tons of research, I just decided to make the most compact manifold I could because the added benefits of an equal length system are so small, that even if it was tuned, they don't out weigh the headache of making it fit.

Heres what I came up with:


The 6258 uses a T25 flange so while I didn't "need" to make it a twin scroll, I designed the manifold to behave like one. Hence why cylinder 4's pipe comes up and over and meets up with cylinder 1 before the merge.


...And he is on the board! One of these days, hopefully soon, we shall hook up so you can give me a ride in that beast (please?). Very cool car to see at 92Forty. I still am amazed you made in time
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ideola  



Joined: 01 Oct 2004
Posts: 15489
Location: Woodstock IL

PostPosted: Mon Dec 12, 2016 9:10 am    Post subject: Reply with quote

Mike9311 wrote:
...And he is on the board! One of these days, hopefully soon, we shall hook up so you can give me a ride in that beast (please?). Very cool car to see at 92Forty. I still am amazed you made in time


Indeed, that was an EPIC effort to make it there and back with no incidents!!! As I recall, wrenches were still flying until nearly the moment of departure on Saturday morning!

I still need my ride too...
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Paulyy  



Joined: 05 May 2014
Posts: 87
Location: Melbourne

PostPosted: Mon Dec 12, 2016 3:44 pm    Post subject: Reply with quote

I only just noticed the 924 turbos have their sparkplugs on the other side?

Some interesting takes on turbo placements.
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lildude4life  



Joined: 27 Apr 2015
Posts: 11
Location: Milwaukee WI

PostPosted: Tue Dec 13, 2016 3:34 pm    Post subject: Reply with quote

ideola wrote:
Mike9311 wrote:
...And he is on the board! One of these days, hopefully soon, we shall hook up so you can give me a ride in that beast (please?). Very cool car to see at 92Forty. I still am amazed you made in time


Indeed, that was an EPIC effort to make it there and back with no incidents!!! As I recall, wrenches were still flying until nearly the moment of departure on Saturday morning!

I still need my ride too...


Not only were wrenches flying, but I brought my entire tool box with me in the chase car in case I broke down. Tow straps too!

But don't worry guys, I'll get everyone rides at some point.


Back to the subject matter at hand, for anyone interested in EFR turbos, Borg has a cool turbo "matchbot" program to do turbo sizing if you are not familiar. The 7064 is the more commonly used turbo in 2L applications but I wasn't looking for gratuitous amounts of boost or hp. Here's what I used for input numbers. Are they accurate? Meh they're probably decently close. VE is probably too high (ok maybe way to high but I do have a stage 1 turbo cam), and flow resistances could probably be lower, especially the exhaust seeing as I have 3" pipe from the turbo to the CAT.

At the boost levels I wanted to run the turbo map looked great with all 3 high end points right in the sweet spot (currently running only 10psi). The only issue is I wen't with the internal waste gate setup and I am pretty much maxing it out as it can flow about 40% so I would highly suggest going external if you do use the 6258. The 7064 has a larger waste gate so it can flow plenty more.









Ya theres no way I'm making close to 300hp
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CÚdric  



Joined: 27 Aug 2004
Posts: 1675
Location: Sweden

PostPosted: Tue Dec 13, 2016 6:11 pm    Post subject: Reply with quote

Ahh, why use all these retarded units, i thought we left that 1799

Numbers looks reasonable, but back pressure after turbine is really high, will you run with a cat? Should be easy to have half that number. Compressor looks like its a bit on the large side, but it will give you some really good top end.

To bad I dont have the turbine/compressor maps for this one, then Ive could have run them on my 931 GT-power simulation model ive been working on. I will dig around a bit..

i think you will easily reach 300, its doable on a GTS spec engine with #8/2670 KKK so should be a breeze with the much higher efficiency the EFR provides (and without Kjet flap).
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CÚdric  



Joined: 27 Aug 2004
Posts: 1675
Location: Sweden

PostPosted: Tue Dec 13, 2016 6:14 pm    Post subject: Reply with quote

You have probably seen it, but ill put it here just to get some extra motivation in the garage:

Joakim.S 924 turbo 445hp with BW EFR turbo, engine dyno:

https://www.youtube.com/watch?v=Maae0lF1mXs&t=8s
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