Quote:
Originally Posted by J3Vr6
Sooooo, where's that video?  Excited to see it.
Been contemplating the next route of mods, this seems like a contender. |
Coming soon. I'm home with a 2 week old girl and a 2 year old boy that isn't used to not getting all the attention yet, so it's taking a bit
but i'm almost done with the install. Working between naps + trying to make the video is just making it take longer than it typically would for someone that can focus on the swap. I also want to run logs before posting the video to make sure it's performing how it should. But as of now she's mounted and ready to test.
Quote:
Originally Posted by OzBMR
Just fact checking on the flow data quoted by Dorch Engineering on their web site and in the first post here regarding stock Bosch pump for original B58 and B58TU.
From the Bosch web site and data sheet here https://www.bosch-mobility-solutions...pressure-pump/
Bosch HDP5 (OEM N55 HPFP) has a maximum flow of 1.12 cm3 per cam rotation
Bosch HDP5 EVO (Rev C) has a maximum flow of 1.2 cm3 per cam rotation, if using a 4 cam x 4.7mm lobe. BMW uses a 3 x 4.7mm lobe so the maximum flow with the BMW cam specs is 0.897 cc/rev (188 l/hr at 7000 rpm) This product has a 250 bar or 500 bar internal pressure relief valve, reduced internal restrictions and introduction of EVO parts (outlet valve) For original B58 the 250 bar internal pressure relief valve is used.
Bosch HDP6 (has a maximum flow rate of 1.3 cm3 per cam rotation (210 l/hr) and 500 bar internal pressure relief valve. With the 3 x 4.7mm lobe the maximum flow rate is 1.1074 cc/rev (232 l/hr at 7000 rpm)
So, the HDP6 with the stock B58 cam profile provides about 23% more flow than the stock HDP 5 EVO (previously calculated 8.3% based on the maximum Bosch flow rates using the 4 x 4.7 cam profile for both pumps)
Based on the same 3 x 4.7mm cam lobe profile XDI-35 (10.5 mm piston) has capacity of 1.221 cc/rev for 256 l/hr (36% more flow) and XDI-60 (11.5mm piston) is 1.465 cc/rev for 307 l/hr (63% more flow) at 7000 rpm |
That's probably right. Just everyone needs to keep in mind that we can only use our cam sizing. The piston on the TU pump is longer and I'd guess that the lobe on the TU engine's cam is larger as well, so we may not be getting the full potential capacity of the pump without swapping cams. But still seems like a viable upgrade.
Quote:
Originally Posted by enemigo13
450hp with stock turbo, 600hp is non stock turbo. remember that with the same fueling/boost bigger turbo will give more hp
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Not true. If you are fuel limited then a bigger turbo won't make more power.