Turbo manifold design

[Ahmed_9milli]

Hey guys,
We have got recently a new MGT12 Turbocharger and while i was designing the header,I found that we don't have enough space to put the collector directly on the turbine inlet flange and rout the runners out of it,so i designed the following header:
http://img515.imageshack.us/img515/2025/header5m.jpg
http://img23.imageshack.us/img23/1371/headerandturbo.jpg

The turbo oil dreain and inlet sould be alligned vertically,Thus the turbine inlet and compressor outlet will be always in the position showed above.
I got a feeling that this aint right.No body do such a design but my choices are quite limited.
any ideas??

[Ahmed_9milli]

Hey guys,
We have got recently a new MGT12 Turbocharger and while i was designing the header,I found that we don't have enough space to put the collector directly on the turbine inlet flange and rout the runners out of it,so i designed the following header:
http://img515.imageshack.us/img515/2025/header5m.jpg
http://img23.imageshack.us/img23/1371/headerandturbo.jpg

The turbo oil dreain and inlet sould be alligned vertically,Thus the turbine inlet and compressor outlet will be always in the position showed above.
I got a feeling that this aint right.No body do such a design but my choices are quite limited.
any ideas??

[coastertrav]

On that turbo, you should be able to clock the compressor and turbine housings relative to the center section. It should be fairly obvious once you have the unit in hand.

You can mount the turbo in almost any orientation (keeping the shaft horizontal), and still rotate the center section to promote the proper oil feed.

[Drew Price]

It's also generally accepted that primary length should not be the driving factor for a turbo manifold, especially with restricted FSAE engines. Scavenging just doesn't play as big a role as your new compressed inlet charge gives you. That might make your packaging a little easier.

[Ahmed_9milli]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content"> You can mount the turbo in almost any orientation (keeping the shaft horizontal), and still rotate the center section to promote the proper oil feed </div></BLOCKQUOTE>

yea that's right but the max. orintation is 15 degree + or -
and i maild the vendor to check these instructions and the answer was yes.
the problem is this few degrees will not solve my problem as i still have to but the collector away from the turbine inlet and it will be great if this position won't affect the performance of the turbine.

[Ahmed_9milli]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Drew Price:
It's also generally accepted that primary length should not be the driving factor for a turbo manifold, especially with restricted FSAE engines. </div></BLOCKQUOTE>

will, That's a good news finally. http://fsae.com/groupee_common/emoticons/icon_smile.gif

[coastertrav]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Ahmed_9milli:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content"> You can mount the turbo in almost any orientation (keeping the shaft horizontal), and still rotate the center section to promote the proper oil feed </div></BLOCKQUOTE>

yea that's right but the max. orintation is 15 degree + or -
and i maild the vendor to check these instructions and the answer was yes.
the problem is this few degrees will not solve my problem as i still have to but the collector away from the turbine inlet and it will be great if this position won't affect the performance of the turbine. </div></BLOCKQUOTE>

I understand that, but what I'm saying is that you can loosen the center section to clock it in whatever orientation you need. The +/- 15 degrees the manufacturer is talking about is the shaft axis.

[Ahmed_9milli]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content"> The +/- 15 degrees the manufacturer is talking about is the shaft axis. </div></BLOCKQUOTE>

nop, This is the angle allowable for the oil outlet(drain) orintaition about the shaft axis.
the angle you'r talking about is the angle between the shaft axis and direction of gravity which must be 90 degrees(normal) within 10 degrees + or-
oil drain must be in the direction of gravity so that oil leakage to the compressor housing will be minimum.
Thanks a million bro i appreciate your advice http://fsae.com/groupee_common/emoticons/icon_smile.gif

[Gruntguru]

Ahmed
You are misunderstanding Coastertrav. You can rotate the turbine and compressor housings about the shaft axis to any orientation you like and still align the centre housing within 15 deg of the vertical. ie the three housings can be rotated independently.

The only exception to this is that some locations for the wastegate muscle unit (diaphragm) will conflict with the compressor discharge although even this can be worked-around if absolutely necessary.

[Ahmed_9milli]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Gruntguru:
Ahmed
You are misunderstanding Coastertrav. You can rotate the turbine and compressor housings about the shaft axis to any orientation you like and still align the centre housing within 15 deg of the vertical. ie the three housings can be rotated independently.

The only exception to this is that some locations for the wastegate muscle unit (diaphragm) will conflict with the compressor discharge although even this can be worked-around if absolutely necessary. </div></BLOCKQUOTE>

hell yea, i got it now. i'm sorry dude i didn't take this solution in my mind before as i thought taht will harm the sealing of the turbine and the compressor.
i will see what i can do about it http://fsae.com/groupee_common/emoticons/icon_smile.gif
thanks and my apologies for u coastertrav