[Raccoon]

Originally Posted by Torgus

I saw some post on the 'n52 boosted builds' facebook group of someone claiming to make 20psi with a 66mm pulley. The blower must be spitting out hot as hell air...I don't think it will last long...

I feel like at that point it's probably time to run forged internals and lower compression a bit. I also worry for his front dampener /crank hub.

[631twentyeighteye]

Originally Posted by Raccoon

I feel like at that point it's probably time to run forged internals and lower compression a bit. I also worry for his front dampener /crank hub.

If i recall correctly the fella was running an interesting hybrid block. Something like a sleeved n52 block w/ n54 pistons and n55 rods and he had a pinned crack hub fix as well.

[Raccoon]

Originally Posted by 631twentyeighteye

If i recall correctly the fella was running an interesting hybrid block. Something like a sleeved n52 block w/ n54 pistons and n55 rods and he had a pinned crack hub fix as well.

Interesting. I've often wonder how hard it would be to run a n54 or n55 short block. The 3 total minutes I looked into it it seems valvetronic oil control was an issue with atleast the n54 but maybe not n55?. I've heard the n52 heads fit. However,who knows about the rest, flywheel/flex plate/ rear bolt pattern starter ect. I haven't really done a deep dive yet. There can be so many nuanced difference maybe sleeve/n54 rotating assembly is the way to go.

[Torgus]

Originally Posted by 631twentyeighteye

If i recall correctly the fella was running an interesting hybrid block. Something like a sleeved n52 block w/ n54 pistons and n55 rods and he had a pinned crack hub fix as well.

Yeah, sounds about right. Anyone interested in boosted n52s should probably join the facebook group.

As much as I hate to say it...forums are dead.

[Igor.v_a]

Originally Posted by Torgus

Yeah, sounds about right. Anyone interested in boosted n52s should probably join the facebook group.

As much as I hate to say it...forums are dead.

Send a link to the group on Facebook

[631twentyeighteye]

Originally Posted by Igor.v_a

Send a link to the group on Facebook

https://www.facebook.com/groups/504335147207871

Not sure if that link will work but this is one im part of. Much more active than on here. I bounce back and forth since the forums are certainly more organized but the FB groups have many more active members.

[Raccoon]

So I'm putting the n54 manifold on. Did you guys just cut the charges boot in the middle so you can rotate it to fit on the new throttle body position?

I will say it's almost worth it just for the space it fees up in the engine bay.

[Raccoon]

Originally Posted by 631twentyeighteye

https://www.facebook.com/groups/504335147207871

Not sure if that link will work but this is one im part of. Much more active than on here. I bounce back and forth since the forums are certainly more organized but the FB groups have many more active members.

I am awaiting approval.

[Torgus]

Originally Posted by 631twentyeighteye

https://www.facebook.com/groups/504335147207871

Not sure if that link will work but this is one im part of. Much more active than on here. I bounce back and forth since the forums are certainly more organized but the FB groups have many more active members.

Yeah that is the one. I feel the same way forums are easier to search and are more organized...but all the newest info and interesting builds are on facebook/instagram it seems.

[Raccoon]

Originally Posted by Raccoon

I am awaiting approval.

Got denied lol.

[Torgus]

Originally Posted by Raccoon

Got denied lol.

How?

I got approved and I don't even own an N52 anymore.

[Raccoon]

Originally Posted by Torgus

How?

I got approved and I don't even own an N52 anymore.

It may be bc I almost never use Facebook so I may have looked like a bot. Or I answered the "just get an LSx or n54 questions wrong" lol. Raimund fixed me up as we converse on YouTube sometimes.

On another note. I had do some fab work. I first tried to make a solid pipe from comp out to tb in, there are so many bends and drastic size changes it was difficult without having my car walking distance from the fab shop. I tacked up a pipe, but was not happy with the auto zone 2.5 to 3 adapter as it was a very sudden change. I took it to work and used the pipe expanded to smooth it and gradually brought the pipe size up from 2.5 to 3-1/4. Ended up making three pieces I could take home, test fit tack then weld up at work.. Of course it was off a mm so that means nothing came close, so I found a solution. I still need to weld up my adapter which is expanded 2.5-2-3/4 to 3-1/4 and it's done. It helps having 2 pieces with install as it's so tight one pipe had to be perfect or it didn't even come close. I forgot how hard this is one a small car. I make exhaust, charge pipes, coolant pipe for diesels all that time but this is for an engine dyno meter test cell so have a lot of room to work with.

[l0gg3r]

Originally Posted by 631twentyeighteye

If i recall correctly the fella was running an interesting hybrid block. Something like a sleeved n52 block w/ n54 pistons and n55 rods and he had a pinned crack hub fix as well.

yeap that's me, btw this engine failed maybe after 200 miles - head lifted, compression ratio was ~8.5

[l0gg3r]

btw here is the engine build list, before it failed

- n52 block, sleeved (bottom lip, ~3mm thick, Melling Performance)
- n54 pistons
- n55 rods (it’s shorter then n54 -> so lower compression ratio)
- n54 thicker head gasket
- n54 vtt spline lock crankhub + bolt capture with iron bolts + crank seal guard
- acl rod bearings
- milvs
- ess g1 supercharger with 66mm pulley (about 20psi boost)
- superspint headers and dual exhaust
- n54 intake manifold, throttle body, custom chargepipe
- 2x 1000cc snow performance progressive meth injection
- aem 340 lph fuel pump
- bosch gt2 injectors
- custom arduino controller BOV (operates turbosmart ev)
- n54 oil filter housing + mosselaman oil thermostat + oil cooler (software targets ~90c coolant, which keeps ~100c oil)
- csf coolant radiator

[Torgus]

Sorry to hear the head lifted. It's an awesome build. Head lifting is common on n54 blocks after 650whp or if you have removed the head and replace(why I have ideas...). Most upgrade fasteners and install larger bolts where they can to increase clamping force.

What is your plan moving forward?

Honestly LS swaps probably make the most sense if anyone wants to drop serious money into an E9X build at this point. 18k to build an N54 all optioned out gets you a hell of a LS Swap as an example.

[l0gg3r]

Originally Posted by Torgus

Sorry to hear the head lifted. It's an awesome build. Head lifting is common on n54 blocks after 650whp or if you have removed the head and replace(why I have ideas...). Most upgrade fasteners and install larger bolts where they can to increase clamping force.

What is your plan moving forward?

Honestly LS swaps probably make the most sense if anyone wants to drop serious money into an E9X build at this point. 18k to build an N54 all optioned out gets you a hell of a LS Swap as an example.

Right, LS swap would be best solution, but at my location where i live, we can see LS only in movies

I'll try bigger bolts first, but i'm like 100+1% sure that this whole build is super stupid, just waste of time and money.
I'm trying to find crashed manual m3, maybe that swap will be best option for reliable car.

[631twentyeighteye]

Originally Posted by l0gg3r

Right, LS swap would be best solution, but at my location where i live, we can see LS only in movies

I'll try bigger bolts first, but i'm like 100+1% sure that this whole build is super stupid, just waste of time and money.
I'm trying to find crashed manual m3, maybe that swap will be best option for reliable car.

If i'm honest my main concern is that size supercharger pushing 20psi. Sounds like a ton of hot air. I think if it were built with a turbo sized for your power goals it might not be as much of an issue.

[l0gg3r]

Originally Posted by 631twentyeighteye

If i'm honest my main concern is that size supercharger pushing 20psi. Sounds like a ton of hot air. I think if it were built with a turbo sized for your power goals it might not be as much of an issue.

The whole idea was that same ESS G1 supercharger is pushing 650hp on my s65 m3 platform.

So CFM is equal to HP (except CR of the engine, and some minor things), therefore assumption was that this engine can make something near 650hp.

But seems I'm over-spinning the SC, as air gets really hot. if all this frankenshtein idea works, i'll install big fmic to cool it down, but honestly i lost last bit of hope as this is already 4th engine + 1 blown transmission

[Noir]

Very cool to see this is the top thread here… miss y’all

Torgus, the GT2 injectors are fine for 100% e85 — using some nice fuel. Just pricy… The TC Kline kit + new power feels good. Only making 9 pounds though. The pump needs to be replaced to keep up/push more to the injectors.

Had a friend of a friend make a custom elbow from the IM to the blower. Tapped for meth… Advised from the tuner @ 22 to research pumps and potentially a 750cc jet instead of the one I’m running.

I am seldomly online these days. Just wanted to share my good experience with 22rpd and that the car has useable power on the street. +1 should just mod my 340… Anyways. I hope you and yours are doing well. Stay safe!

N

[AmuroRay]

Originally Posted by Grizzopit

Thanks, sorry for my english...
Now there is a basic Ess firmware and a 120 pulley, by the way, I noticed that it is made on the basis of the 328i firmware, on the 330i basic firmware for the atmosphere there are more aggressive angles and a gas pedal, I also have a BMS Power Box, so I'm already in the subject =)
What it feels like, it has become like a 335i, I call it an inflatable pedal, now there is always a lot of power under it at once ... it looks like a 335i when it goes to boost to 1300-2000rpm

I'm happy with whistle sound like the 335d and traction, well let's move on, ahead of 115 110 and 100 pulleys, Ess also made me return to the collector stock, but I plan to return to equal length again, and then we'll see

What are these?

[Grizzopit]

Originally Posted by AmuroRay

What are these?

Equal-length collectors

[Raccoon]

Originally Posted by l0gg3r

Right, LS swap would be best solution, but at my location where i live, we can see LS only in movies

I'll try bigger bolts first, but i'm like 100+1% sure that this whole build is super stupid, just waste of time and money.
I'm trying to find crashed manual m3, maybe that swap will be best option for reliable car.

I have way more respect for a build like yours than some kid with Cobb access port on a turned up n54 that may be faster... bc at least you are putting in the work. Tuning has become in many ways just a comparison to who has the better starting of point to add the most power with the least amount of effort or getting your hands dirty. I'll walk by fifty 800 whp n54 to pick your brain over your setup.