Tubular Manifold design for 350bhp?
Tubular Manifold design for 350bhp?
I'm building a G-Wagon OM605 and i'm using a GTX28 turbo (T25 flange) which should give me around 300-350bhp at 2bar
Should I use tubular manifold? If so, what size runners?
I want lots of low down torque/spool, so maybe the stock manifold would be okay? I don't want high EGT though.
(07-13-2017, 05:43 AM)Cooper I'm building a G-Wagon OM605 and i'm using a GTX28 turbo (T25 flange) which should give me around 300-350bhp at 2bar
Should I use tubular manifold? If so, what size runners?
I want lots of low down torque/spool, so maybe the stock manifold would be okay? I don't want high EGT though.
(07-13-2017, 05:43 AM)Cooper I'm building a G-Wagon OM605 and i'm using a GTX28 turbo (T25 flange) which should give me around 300-350bhp at 2bar
Should I use tubular manifold? If so, what size runners?
I want lots of low down torque/spool, so maybe the stock manifold would be okay? I don't want high EGT though.
I'm not a turbo expert by any means hence why I've been looking for examples of other people's setups and dynos. I've put all the figures into the borg warner turbo calculator and it basically told me I need a gt2860 size turbo, so I've bought one and it's on its way. There were basically no BW turbos that were small enough in the 200 range to give me the low down boost I want.
I'm not bothered about an exact science, I'm just wondering if I'm best to make myself a tubular manifold or is it a pointless exercise given the power i want? I'm not bothered of it only makes 300bhp (or less), but from what I've seen of these gtx28 turbos, if pushed quite hard it might make nearer 350bhp.
I AM bothered about egt and since this is in a 2 tonne truck and will be used for pulling I want to know if there's a benefit of a tubular over the stock manifold.
(07-14-2017, 11:23 AM)Cooper I'm not a turbo expert by any means hence why I've been looking for examples of other people's setups and dynos. I've put all the figures into the borg warner turbo calculator and it basically told me I need a gt2860 size turbo, so I've bought one and it's on its way. There were basically no BW turbos that were small enough in the 200 range to give me the low down boost I want.As long as you have the right fueling, exhaust housing, cooling in place and downpipe/ exhaust egt's should be fine.
I'm not bothered about an exact science, I'm just wondering if I'm best to make myself a tubular manifold or is it a pointless exercise given the power i want? I'm not bothered of it only makes 300bhp (or less), but from what I've seen of these gtx28 turbos, if pushed quite hard it might make nearer 350bhp.
I AM bothered about egt and since this is in a 2 tonne truck and will be used for pulling I want to know if there's a benefit of a tubular over the stock manifold.
(07-14-2017, 11:23 AM)Cooper I'm not a turbo expert by any means hence why I've been looking for examples of other people's setups and dynos. I've put all the figures into the borg warner turbo calculator and it basically told me I need a gt2860 size turbo, so I've bought one and it's on its way. There were basically no BW turbos that were small enough in the 200 range to give me the low down boost I want.As long as you have the right fueling, exhaust housing, cooling in place and downpipe/ exhaust egt's should be fine.
I'm not bothered about an exact science, I'm just wondering if I'm best to make myself a tubular manifold or is it a pointless exercise given the power i want? I'm not bothered of it only makes 300bhp (or less), but from what I've seen of these gtx28 turbos, if pushed quite hard it might make nearer 350bhp.
I AM bothered about egt and since this is in a 2 tonne truck and will be used for pulling I want to know if there's a benefit of a tubular over the stock manifold.
(07-14-2017, 03:29 PM)bruno_pinho 300hp with a gtx28?!good luck...
To somewhat contradict myself, here is a video of 290hp dyno with 2860, but it is on a 606
https://www.youtube.com/watch?v=c5zJULLd7sU
However, I suspect this was at a high rpm with some cam / valve mods. It does not say. It is also the only dyno I've seen of a GT28.
On the flip side, this G wagen with an HX35 only made 260hp.
https://www.youtube.com/watch?v=az9KUHrdJVM
I don't know the fueling on the pumps, but it must be pretty low (less than 120cc). I think the power rating might be corrected to be at the crank as well.
(07-15-2017, 10:08 AM)awsrock To somewhat contradict myself, here is a video of 290hp dyno with 2860, but it is on a 606
https://www.youtube.com/watch?v=c5zJULLd7sU
However, I suspect this was at a high rpm with some cam / valve mods. It does not say. It is also the only dyno I've seen of a GT28.
On the flip side, this G wagen with an HX35 only made 260hp.
https://www.youtube.com/watch?v=az9KUHrdJVM
I don't know the fueling on the pumps, but it must be pretty low (less than 120cc). I think the power rating might be corrected to be at the crank as well.
(07-15-2017, 10:08 AM)awsrock To somewhat contradict myself, here is a video of 290hp dyno with 2860, but it is on a 606
https://www.youtube.com/watch?v=c5zJULLd7sU
However, I suspect this was at a high rpm with some cam / valve mods. It does not say. It is also the only dyno I've seen of a GT28.
On the flip side, this G wagen with an HX35 only made 260hp.
https://www.youtube.com/watch?v=az9KUHrdJVM
I don't know the fueling on the pumps, but it must be pretty low (less than 120cc). I think the power rating might be corrected to be at the crank as well.