Recent Posts

51

Engine + Driveline / Re: M42 whining noise

« Last post by Greeny on February 20, 2024, 06:58:48 PM »

how is chain tensioner, was that replaced? how is your oil level and what spec you using?

Yes, tensioner was replaced several times..

Regarding oil I use Mobil1 5w50. I also used Sunoco 5w50 but than it was no longer available so I switched to Mobil1. The car has seen many trackdays and I have a really good experience with 5w50 oil grade.

52

Engine + Driveline / Re: M42 whining noise

« Last post by monty23psk on February 17, 2024, 01:16:04 AM »

how is chain tensioner, was that replaced? how is your oil level and what spec you using?

53

Engine + Driveline / Re: M42 whining noise

« Last post by Greeny on February 14, 2024, 10:16:37 AM »

maybe worn guides. THey are plastic so whine might be related to chain on plastic. Does it get louder when you increase engine speed?

The guides were changed back then and they are still in almost perfect condition.. Yes, it gets louder with increased engine speed. To me it also sounds like chain on plastic or some vibration of the chain itselft. But chain is not stretched compared to a new one, guides are in perfect condition.. I really don't know.

Does anyone have any experience with too much pressure on the chain?

54

Engine + Driveline / Re: M42 whining noise

« Last post by monty23psk on February 14, 2024, 02:13:06 AM »

maybe worn guides. THey are plastic so whine might be related to chain on plastic. Does it get louder when you increase engine speed?

55

Swaps, Turbos, Buildups / Re: Does a M42 have an electrical connection for the fuel vent valve on cannister?

« Last post by BrandoZ5 on February 14, 2024, 02:04:36 AM »

Thank you, apparently BMW used to make all the connections the same, knock sensors and evap sensors. Deleted the knock sensors on the m44 and used the connections on the m42. Thank you

56

Engine + Driveline / Re: M42 whining noise

« Last post by Greeny on February 13, 2024, 08:22:55 PM »

Can you confirm what side the noise is coming from. Have you used a stethoscope on parts of the engine?

I tried to detect the noise with stethoscope and I am 99% sure it is the from the front of the engine but I was unable to detect which part of timing chain assembly..

57

Engine + Driveline / Re: M42 whining noise

« Last post by monty23psk on February 13, 2024, 01:04:49 AM »

Can you confirm what side the noise is coming from. Have you used a stethoscope on parts of the engine?

58

Engine + Driveline / M42 whining noise

« Last post by Greeny on February 12, 2024, 09:44:01 AM »

Hello guys, I need your help. Do you have an idea what is making this whining noise?

https://www.youtube.com/watch?v=LIS4VQCFiv4

As you can see, I have no accesories like power steeting pump, alternator, nothing. Propably, the only thing which can make the noise is timing chain. I have replaced all the components about 60t kms ago and this noise gradually grew larger up to this level. Visually, the camshaft sprockets look perfect, just like new, same for the crankshaft sprocket and idler sprocket. Also the chain looks like new and is not stretched compared to a new one. Do you have any idea what could this noise be?

It is M42 engine with older (e30) design of the timing chain assembly - the one with the idler sprocket instead of small rail.

59

Swaps, Turbos, Buildups / Re: Does a M42 have an electrical connection for the fuel vent valve on cannister?

« Last post by keflaman on February 11, 2024, 12:01:02 PM »

http://bmwfans.info/parts-catalog/E30-2-doors/USA/318is-M42/L-M/sep1990/browse/fuel_supply/exp_tank_activated_carbon_container/

According to BMWfans, #19 looks to be what you've posted a picture of. If you have the VIN of the donor motor, I'd put that into RealOEM or BMW fans to compare to.

60

Swaps, Turbos, Buildups / Does a M42 have an electrical connection for the fuel vent valve on cannister?

« Last post by BrandoZ5 on February 05, 2024, 05:23:34 PM »

Hello, my son and I got a 1991 318 rolling shell and found a decent m44 to install. We can't find the electrical connection to hook into the fuel tank vent valve on the charcoal cannister. Does the M42 not have on while the M44 does? Thanks (see photo)