E90 AC Compressor Bypass AC Delete Guide

e90yyc · 02-03-2022, 12:35 PM

benspeeder So the 6PK1105 didn’t work…? I’m surprised to hear this, because I thought all E9x N52s had the same belt routing.

And not suggesting you don’t know how to change a belt at all, but you released tension completely/had the tensioner wound back as far as it goes?

When I did mine, I had more than ample space to slide the belt on with the tension fully released.

benspeeder · 02-12-2022, 07:57 AM

Yes, fully moved the tensioner. I was stumped why there would be that much difference but there was. I even compared the tensioner to a brand new one I’ve got on the shelf to see if the pulley was different. They were the same. Go figure!

Moose · 09-09-2023, 02:06 PM

Just did the bypass with a Valucraft 435K6. I could not get the Duralast 433K6 to fit on my E90 330i. With the bypass it runs quiet but now have a slight loss in power steering. The belt is not loose and I verified my alternator is putting 14V. Anyone experience this?

NotSoJDMGC4 · 03-10-2024, 06:42 PM

Looks like it was my time to perform this as well.

DO NOT USE A T55 SOCKET. Please remove this from the guide.

Technically it requires a TP60 socket but a T60 worked for me. You only need one person to perform this as well. Just use a breaker bar with a T60/TP60 socket and swing the tensioner over. Use one hand to hold the tension and the other to slip the belt under the pulley.

I ended up using a Bando 6PK1100 belt, which is about 43.3 inches and there was still some slack. Initially I was using a 6PK1105 which is about 43.5 inches but it would slip in colder mornings (below 0 degrees C).

02-03-2022, 12:35 PM	#23
e90yyc Art Collector 2425 Rep 3,448 Posts Drives: 2007 328xi (GM-delete 6MT) Join Date: Feb 2018 Location: Canada iTrader: (0)	benspeeder So the 6PK1105 didn’t work…? I’m surprised to hear this, because I thought all E9x N52s had the same belt routing. And not suggesting you don’t know how to change a belt at all, but you released tension completely/had the tensioner wound back as far as it goes? When I did mine, I had more than ample space to slide the belt on with the tension fully released. __________________ When I'm dead, just throw me in the trash.
	Appreciate 0 Quote

02-12-2022, 07:57 AM	#24
benspeeder New Member 0 Rep 6 Posts Drives: BMW 330i, 435i, M3, 328xi, SE4 Join Date: Feb 2022 Location: Boonton NJ iTrader: (0)	Yes, fully moved the tensioner. I was stumped why there would be that much difference but there was. I even compared the tensioner to a brand new one I’ve got on the shelf to see if the pulley was different. They were the same. Go figure!
	Appreciate 0 Quote

09-09-2023, 02:06 PM	#25
Moose New Member 2 Rep 6 Posts Drives: 2006 330i Join Date: Oct 2013 Location: Austin iTrader: (0)	Just did the bypass with a Valucraft 435K6. I could not get the Duralast 433K6 to fit on my E90 330i. With the bypass it runs quiet but now have a slight loss in power steering. The belt is not loose and I verified my alternator is putting 14V. Anyone experience this?
	Appreciate 0 Quote

03-10-2024, 06:42 PM	#26
NotSoJDMGC4 New Member 1 Rep 7 Posts Drives: 1992 240SX & 2001 Impreza Join Date: Feb 2019 Location: BC/Ontario iTrader: (0)	Looks like it was my time to perform this as well. DO NOT USE A T55 SOCKET. Please remove this from the guide. Technically it requires a TP60 socket but a T60 worked for me. You only need one person to perform this as well. Just use a breaker bar with a T60/TP60 socket and swing the tensioner over. Use one hand to hold the tension and the other to slip the belt under the pulley. I ended up using a Bando 6PK1100 belt, which is about 43.3 inches and there was still some slack. Initially I was using a 6PK1105 which is about 43.5 inches but it would slip in colder mornings (below 0 degrees C).
	Appreciate 0 Quote