PT88 370ci back pressure?
I would like to check the back pressure on mine eventually. Not sure when I'll get around to it though. If I remember correctly people say that the mesh causes turbulence but a cone filter allows a straight path for the air to flow into the turbo.
I'm using this AEM one. http://www.ebay.com/itm/AEM-9-X4-CONICAL-DRYFLOW-AIR-FILTER-ELEMENT-21-2059DK-/350587991503?pt=Motors_Car_Truck_Parts_Accessories&hash=item51a0ac35cf&vxp=mtr
If it will fit your car it's the best bang for the buck. I looked up plenty of reviews and AEM seemed to outflow any other filter it was tested against (3rd party testing). Otherwise Race Part Solutions has shorter ones that a lot of people use.
But you'll definitely need to get a bigger drain on it. I have -10 and I think I might be pushing the limit. I may end up switching to -12 eventually.
If it will fit your car it's the best bang for the buck. I looked up plenty of reviews and AEM seemed to outflow any other filter it was tested against (3rd party testing). Otherwise Race Part Solutions has shorter ones that a lot of people use.
But you'll definitely need to get a bigger drain on it. I have -10 and I think I might be pushing the limit. I may end up switching to -12 eventually.
Thread Starter
On The Tree
Joined: Jun 2009
Posts: 128
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I guess i'll weld in a provision for a pressure gauge at the merge when i get my turbo back...
Thread Starter
On The Tree
Joined: Jun 2009
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I'm using this AEM one. Aem 9"x4" Conical Dryflow Air Filter Element 21 2059DK | eBay
If it will fit your car it's the best bang for the buck. I looked up plenty of reviews and AEM seemed to outflow any other filter it was tested against (3rd party testing). Otherwise Race Part Solutions has shorter ones that a lot of people use.
But you'll definitely need to get a bigger drain on it. I have -10 and I think I might be pushing the limit. I may end up switching to -12 eventually.
If it will fit your car it's the best bang for the buck. I looked up plenty of reviews and AEM seemed to outflow any other filter it was tested against (3rd party testing). Otherwise Race Part Solutions has shorter ones that a lot of people use.
But you'll definitely need to get a bigger drain on it. I have -10 and I think I might be pushing the limit. I may end up switching to -12 eventually.
Air filters have a ton more surface area than the mesh screens, and are able to flow a lot more air. For instance, take your typical cone filter and cut it off and lay it out flat and compare the surface area to that vs a mesh screen that just covers the turbo inlet.
I put my backpressure gauge in the crossover pipe.
I put my backpressure gauge in the crossover pipe.
air filters have a ton more surface area than the mesh screens, and are able to flow a lot more air. For instance, take your typical cone filter and cut it off and lay it out flat and compare the surface area to that vs a mesh screen that just covers the turbo inlet.
I put my backpressure gauge in the crossover pipe.
I put my backpressure gauge in the crossover pipe.
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On The Tree
Joined: Jun 2009
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And that my turbo was killed by a 1$ piece of mesh on the compressor side.
Is this correct?
Like I mentioned earlier BP ratio was probably around 2:1 at the level, which isnt enough, IMO, to trash a turbo, but combined with the added thrust from the compressor side...eh...maybe. The screen definitely didnt help any though. You would pick up a lot of power without it.
Thread Starter
On The Tree
Joined: Jun 2009
Posts: 128
Likes: 0
Thread Starter
On The Tree
Joined: Jun 2009
Posts: 128
Likes: 0
Like I mentioned earlier BP ratio was probably around 2:1 at the level, which isnt enough, IMO, to trash a turbo, but combined with the added thrust from the compressor side...eh...maybe. The screen definitely didnt help any though. You would pick up a lot of power without it.
Anyone have any experience on a bigger a/r on the pt88? Would it stop the power dropping off at 6k rpm?
TECH Enthusiast
Joined: Mar 2012
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A 4-inch mesh screen covers 12.56 square inches of surface area minus whatever surface area the screen covers. a 9" by 4" cone filter has roughly 113.04 square inches of surface area minus the surface area covered by the actual filter material. Regardless, the cone apparently wins, but your math is off.
9 Second Truck Club
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From: Colorado Springs, Co/ Central, Ca
Mesh is prob the problem but excessive back psi after turbine can also knock out thrust. I noticed this with my GT76 after adding a tail pipe and 2nd muffler.
Thread Starter
On The Tree
Joined: Jun 2009
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Yeah i guess pressure in the turbine would rise if the gases have no where to go after the turbine, but that's why i have a 4" cutout dumbing through my front bumper...
