968HP Dyno Run with PI & BMS JB4

DomiN54ik

Private
Mar 29, 2019
31
15
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BMW E82 135i N54
Yea also got alot better 60-130 Times by having 1.01 ar instead of 1.15 ar

how high do you rev? Would assume 6700-6800 perfect for shifts with your Turbo
 

Scorpstan

Private
Feb 27, 2017
42
46
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335i
Oh wow?!!
Could you do a write up on how to recreate the dual hpfp setup?
I have an old hpfp. Needs a refurb but I'd love to put it to use.

it's not as easy as you might think.
first you need a bmw air conditioning compressor that fits the n54 mount and has a magnetic coupling.
these compressors have a 6-fold strap. the n54 has 7-fold strap. This means that you then have to choose a suitable pulley with 7x that also fits on this compressor.
then you have to made a suitable shaft that connect to the hpfp and the magnetic coupling.
last but not least, you need suitable high-pressure lines.
 

shushikiary

Corporal
Jun 4, 2018
174
75
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335xi
With that big of a turbo I assume you had to move the water pump forward with the bracket supplied by speed tech? If so, how well did the cooling fan fit back in after you did that?

Also, would you mind saying who did the engine build?
 

Scorpstan

Private
Feb 27, 2017
42
46
0
Ride
335i
With that big of a turbo I assume you had to move the water pump forward with the bracket supplied by speed tech? If so, how well did the cooling fan fit back in after you did that?

Also, would you mind saying who did the engine build?

Yes ita a Really Tight fitment at this Position. But it will work. It's important that the water hoses are in right position.
Maybe you can cut a little bit on the fan house.

Engine build by myself.
 

Dumaurier7

Specialist
May 19, 2020
99
37
0
Oh wow?!!
Could you do a write up on how to recreate the dual hpfp setup?
I have an old hpfp. Needs a refurb but I'd love to put it to use.
Doesn't the S55 come with dual HPFPs stock? has anyone thought about adapting that set up (vacuum pump + pumps or pumps only) to work with the N54/55 motors?