Turbo placement on S2.
12-13-2004, 10:24 AM
#1
Nordschleife Master
Thread Starter
Turbo placement on S2.
I always see moddified S2 engines with the turbo placed in the same location as a stock 951. Does anyone here think I am crazy for wanting to mount one directly off the headers? The only thing I can think of is that it would cause extreme heat to the motormount area but with proper heatshielding this could most likely be kept in the stock heat range. What does everyone think?
12-13-2004, 10:50 AM
#5
Nordschleife Master
It is possible to use a log style exhaust manifold and mount the turbo on that side of the motor and as stated there are some plumbing adantages, but I think the negatives out weigh the positives.
The callaway cars use a fairly small turbo, one much smaller than you would need on on the S2, and it is a tight fit. I'm not so sure you could package a turbo of the proper size for a 3.0L engine with out modifications to the engine bay. And if you did manage to fit it over there, just think of what would happen in a minor accident on that side, there would be no wiggle room, and impact would be translated from the impact into the turbo / engine block.
Also the heat the turbo is exposed to would be quite a bit higher, so the life of the turbo could be greatly reduced.
Although there could be less plumbing in the engine bay all said and done, why reinvent the wheel? Use the 951 parts and you can have factory fit with out all the fabrication time. Oil lines, IC plumbing, coolant lines, etc, etc.
The callaway cars use a fairly small turbo, one much smaller than you would need on on the S2, and it is a tight fit. I'm not so sure you could package a turbo of the proper size for a 3.0L engine with out modifications to the engine bay. And if you did manage to fit it over there, just think of what would happen in a minor accident on that side, there would be no wiggle room, and impact would be translated from the impact into the turbo / engine block.
Also the heat the turbo is exposed to would be quite a bit higher, so the life of the turbo could be greatly reduced.
Although there could be less plumbing in the engine bay all said and done, why reinvent the wheel? Use the 951 parts and you can have factory fit with out all the fabrication time. Oil lines, IC plumbing, coolant lines, etc, etc.
12-13-2004, 11:03 AM
#6
Nordschleife Master
Thread Starter
Well, Here is the thing, I dont think the heat will shorten the turbo life (look at a 850T or a SRT-4 turbo) A 16t turbo will fit but I would have to be alittle inventive on the oil line piping comeing off the turbo. Also mounting the turbo with the ICpipe pointing up would be the best way and it will also be fine to flow 7-10psi in a 3.0l engine. I am more worried about the heat to the block - wires - motormounts.
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12-13-2004, 12:40 PM
#7
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It would take some work but it could be done I assume. Try and source a turbo that is like stock 951 KKKs, that is waterjacketed. Then you could use a turbo timer or the stock 951 turbo waterpump to keep water flowing after shutdown, and that would vastly improve the life of the turbo.
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12-13-2004, 03:54 PM
#8
Nordschleife Master
Thread Starter
http://gabriellas.rattar.e.sexiga.nu/compello/m3.jpg
The M guys have mounted turbos in a similar sized location without problems. Picture is for referance of how they mount a turbo in the engine on a M . That is a huge turbo but then again it doesnt fit under the hood.
The M guys have mounted turbos in a similar sized location without problems. Picture is for referance of how they mount a turbo in the engine on a M . That is a huge turbo but then again it doesnt fit under the hood.
12-13-2004, 04:00 PM
#10
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Originally Posted by Fishey
http://gabriellas.rattar.e.sexiga.nu/compello/m3.jpg
The M guys have mounted turbos in a similar sized location without problems. Picture is for referance of how they mount a turbo in the engine on a M . That is a huge turbo but then again it doesnt fit under the hood.
The M guys have mounted turbos in a similar sized location without problems. Picture is for referance of how they mount a turbo in the engine on a M . That is a huge turbo but then again it doesnt fit under the hood.
can we say TURBO LAG?!?!? damn!
12-13-2004, 04:23 PM
#12
I think that is where the Callaway cars mounted them (on the exhaust side).
The callaway cars use a fairly small turbo, one much smaller than you would need on on the S2, and it is a tight fit.
It can be done, however, You will have to do the following:
Make custom headers
Remove windsheild washer items
Remove headlight assemblies (go to fixed position)
May have to cut out a small part of the strut mount (depends on how you make the exhaust)
Relocate igntion coil
Lose PS
Run oil cooled only turbo (or move all the plumbing for the water)
Relocate the oil line to run oil to the turbo
There is more
It is a great idea on a race car where you dont care about any of the things you have to lose, it is a stupid idea on a street car where the same power can be accomplished using the stock setup. I have looked into it a few times.
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12-13-2004, 05:00 PM
#14
Because there is not enough room otherwise. The only time you will see it set back further is in a tube frame car.
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