Your next bolt on Part 2 - Exhaust cam upgrade

rjahl · 07-01-2020, 07:34 PM

Quote:

Originally Posted by hassmaschine

Pretty much.

I actually have Pete's extra set that he sent me long ago to measure - I was going to send them back, and he was going to try and get regrinds again - but he passed before then.

Hassmachine

Have you done anything more with your special N 52 build?

hassmaschine · 07-01-2020, 08:09 PM

no, I have not had any time for projects, but I have stepped over the head a couple times in my garage, lol. I figured I'd be working 24 or 32 hours a week now (with the shutdown), and using vacation time - but I haven't taken a day off since last November.

rjahl · 07-01-2020, 08:45 PM

Quote:

Originally Posted by hassmaschine

no, I have not had any time for projects, but I have stepped over the head a couple times in my garage, lol. I figured I'd be working 24 or 32 hours a week now (with the shutdown), and using vacation time - but I haven't taken a day off since last November.

I'm in the same boat. We prepared for the worst and now Sales are "on fire" We've had a few really good months of Sales/bookings and now we need to fill the orders. Tough.

I know this is wrong, but I was really expecting / selfishly hoping for a few months of reduced activity. I really want a vacation. Have not taken any time off since Fall of 2018

E92William · 07-01-2020, 08:46 PM

There is a set of supposedly N52 cams for sale near me for 500. Guy says they're BNIB Schrick Performance Cams so I think it might be the mislabeled n54 ones.

Guy says they're 238° intake with 10.6 lift and 256° with 10.65 lift on the exhaust.

I suppose that intake lift with MILVs would lead to a final 11.6 of lift. Since the stock intake goes from 9.7 to 10.7 with MILVs.

hassmaschine · 07-01-2020, 10:03 PM

Those values make no sense for an N52. The intake duration should not be less than the exhaust. Also, N52 intake cams look very different from the exhaust. Be interesting to see what those are though, I bet they're for the N54, which will not fit the N52 intake side.

Raimund · 07-23-2022, 12:41 AM

Any updates on this?

Drine · 08-24-2022, 02:41 PM

Quote:

Originally Posted by 303bmw

Any updates on this?

Seems like VAC MS now has a set:
https://store.vacmotorsports.com/sch...n52-p5326.aspx

Duration: 238/272

Lift: 10.60/10.50

Can't find the stock numbers but based on my recent MILVs install and a very brief email chat with Marty from 2020, the next best thing according to him was to pick up a N55 exhaust cam and test fit it in the N52 paired with the MILVs.

I would imagine that this might be the best option to avoid having to get all new rollers/lifters to match the new cams since reusing the old parts that make contact may cause premature wear, but I'm not 100% sure of that on this engine.

hassmaschine · 08-24-2022, 05:26 PM

they are listed on Schrick's site now - but as out of stock. and the specs don't match VAC's description:
https://schrick.com/search?search=N52

I wonder if the duration measurement on the intake is because of how the cams are ground. I always wanted to measure it at the valve itself to get a better reading, because it changes depending on the VVT position.

AmuroRay · 08-25-2022, 12:00 PM

They actually exist...

Noir · 08-28-2022, 05:11 AM

Quote:

Originally Posted by AmuroRay

They actually exist...

Come back… 👉👈

Msv80e90 · 07-01-2023, 12:16 AM

https://www.ecstuning.com/BMW-E90-32...ance/Camshaft/

Bump! Anyone installed these yet? I also found more on a European site a set for 350 euros.

chilledn52 · 07-01-2023, 12:12 PM

Quote:

Originally Posted by Msv80e90

https://www.ecstuning.com/BMW-E90-32...ance/Camshaft/

Bump! Anyone installed these yet? I also found more on a European site a set for 350 euros.

Looking at the camshaft, MFG number is for E46 M54 and the solid lifters in the description mention M50, M52, S50, S52 and M54 engines. So ESC got their vehicle search up wrong for that.

AmuroRay · 07-02-2023, 08:24 PM

Quote:

Originally Posted by chilledn52

Looking at the camshaft, MFG number is for E46 M54 and the solid lifters in the description mention M50, M52, S50, S52 and M54 engines. So ESC got their vehicle search up wrong for that.

M54 and M52Tu cams are the same - but they are completely different from N52 cams.

Shrick does make N52 cams, I believe they are on VACs website.

chilledn52 · 07-02-2023, 08:27 PM

Quote:

Originally Posted by AmuroRay

M54 and M52Tu cams are the same - but they are completely different from N52 cams.

Shrick does make N52 cams, I believe they are on VACs website.

I know that’s what I’m telling him.
With the VAC Cams, I know about that I didn’t mention
Edit: I was just saying that the website was incorrect on the data. As they had selected all bmw models for in compatibility so that’s why it showed up with the N52s

AmuroRay · 07-02-2023, 09:18 PM

Quote:

Originally Posted by chilledn52

I know that’s what I’m telling him.
With the VAC Cams, I know about that I didn’t mention
Edit: I was just saying that the website was incorrect on the data. As they had selected all bmw models for in compatibility so that’s why it showed up with the N52s

07-01-2020, 08:09 PM	#112
hassmaschine Major General 3987 Rep 7,212 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	no, I have not had any time for projects, but I have stepped over the head a couple times in my garage, lol. I figured I'd be working 24 or 32 hours a week now (with the shutdown), and using vacation time - but I haven't taken a day off since last November.
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07-01-2020, 08:46 PM	#114
E92William Banned 2013 Rep 2,025 Posts Drives: 2008 E92 328xi Join Date: Nov 2019 Location: Miami iTrader: (0) Garage List 2008 BMW 328xi [0.00]	There is a set of supposedly N52 cams for sale near me for 500. Guy says they're BNIB Schrick Performance Cams so I think it might be the mislabeled n54 ones. Guy says they're 238° intake with 10.6 lift and 256° with 10.65 lift on the exhaust. I suppose that intake lift with MILVs would lead to a final 11.6 of lift. Since the stock intake goes from 9.7 to 10.7 with MILVs. Attached Images
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07-01-2020, 10:03 PM	#115
hassmaschine Major General 3987 Rep 7,212 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	Those values make no sense for an N52. The intake duration should not be less than the exhaust. Also, N52 intake cams look very different from the exhaust. Be interesting to see what those are though, I bet they're for the N54, which will not fit the N52 intake side.
	Appreciate 0 Quote

07-23-2022, 12:41 AM	#116
Raimund Private First Class 236 Rep 179 Posts Drives: 06 330i Join Date: Nov 2019 Location: Washington iTrader: (0)	Any updates on this?
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08-24-2022, 05:26 PM	#118
hassmaschine Major General 3987 Rep 7,212 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	they are listed on Schrick's site now - but as out of stock. and the specs don't match VAC's description: https://schrick.com/search?search=N52 I wonder if the duration measurement on the intake is because of how the cams are ground. I always wanted to measure it at the valve itself to get a better reading, because it changes depending on the VVT position.
	Appreciate 0 Quote

07-01-2023, 12:16 AM	#121
Msv80e90 New Member 2 Rep 11 Posts Drives: Bmw 328i Join Date: Apr 2023 Location: AZ iTrader: (0)	https://www.ecstuning.com/BMW-E90-32...ance/Camshaft/ Bump! Anyone installed these yet? I also found more on a European site a set for 350 euros.
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