Messages

1

M42 Reference / Re: M47 crank refrence guide.

« on: July 08, 2016, 04:20:27 AM »

The crank pulley bolt and washer for the M47 is a euro market only. Stock is a M18x1.5x102 bolt. A readily available alternative is the N20 crank pulley bolt which is M18x1.5x108mm. The parts list do not list any dimensions of any of the washers.  For the Australian market at least, the E90 320D M47N2 washer is a possible option. Part numbers highlighted below in red.

The bolt and washer is with the engine builder and if there are any issues with them, I update. Part numbers and specs are:

M47
Hex bolt    11232248268      M18x1.5x102   M47
Washer    11232247260    

M44
Hex bolt    11211721100      M16x1.5x120   M44
Washer    11231709977      

E90 320D
Hex bolt   11237790922      M18x1.5x85.5   320D   * too short
Washer    11237787326

N20
Collar screw.   11217614270      M18x1.5x108   N20

2

Engine + Driveline / Re: ACL Race Series Bearings for a M42

« on: July 08, 2016, 04:02:47 AM »

Thanks. Needed the bearings quickly and purchased ACL conrod bearings and Federal Mogul mains. Contacted ACL about a week ago and they were in the process of manufacturing the mains. They should be available in a week or so.

3

Swaps, Turbos, Buildups / Re: Mechanical chain tensioner for the M42?

« on: July 03, 2016, 12:53:39 AM »

Just wondering whether there was an option.

4

Swaps, Turbos, Buildups / Re: M42 race engine

« on: June 30, 2016, 08:15:53 PM »

Currently looking at the cooling system. I am planning to use a EWP and possibly other mods. As a starting point, this is the difference between the S42 head and M42.



Also the stock M42 coolant flow arrangement compared to the S42:

5

Swaps, Turbos, Buildups / Re: M42 race engine

« on: June 30, 2016, 08:05:52 PM »

OK, life got in the way for a while, but the M42 race engine project is now revived. Had a chat to Tony Knight Engines (Adelaide) about building it and he was busy for a number of months. Chatted with Neil Trama and he is free, so I have dropped a bunch of parts for him to build and engine for me.

Made a few changes which Neil has run through his engine analyser program and it seems that it could be very high 200hp - theoretical 293hp :enormousbiggrin:

Going with dry sump arrangement.

6

Engine + Driveline / Re: M42 weaknesses also apply to M44?

« on: June 29, 2016, 03:54:28 AM »

ACL Performance M42 main bearings include a 360° thrust. Probably cannot get a better set of bearings.

7

Engine + Driveline / Re: ACL Race Series Bearings for a M42

« on: June 27, 2016, 08:11:41 PM »

I can get ACL Race Series conrod bearings, so thats OK. Need mains. I have heard of Clevite 77 NASCAR bearings being used. Anyone know the part number at least for the main bearings

8

Engine + Driveline / ACL Race Series Bearings for a M42

« on: June 25, 2016, 08:07:22 PM »

OK blokes, where to buy ACL Race Series Bearings for a M42? Would also consider Clevite 77 bearings

9

Swaps, Turbos, Buildups / Mechanical chain tensioner for the M42?

« on: June 07, 2016, 09:07:40 AM »

Is there a mechanical chain tensioner for the M42?

10

Engine + Driveline / Re: m44 318i overheating

« on: May 24, 2016, 10:21:11 PM »

Could be. I had a yamaha RZ250 which did that sometimes and I'd reach down squeeze the radiator hose. It was enough to start the coolant flow and the temp gauge would return to normal. Try this.

Overheating niggles really says "if the the cooling system hasn't been renovated (or is unknown) then you should consider doing it".

11

WTB/WTT / WTB Mocal TOP9 oil cooler take-off plate for a M42

« on: May 21, 2016, 12:24:28 AM »

Wanted to buy: Mocal TOP9 oil cooler take-off plate for a M42.

12

Engine + Driveline / Re: Direction of coolant flow in an E30 M42

« on: April 25, 2016, 09:38:03 PM »

OK Diagram has been updated to show correct hoses to the heater control valve. Hope this is all good now.

13

Engine + Driveline / Direction of coolant flow in an E30 M42

« on: April 10, 2016, 04:49:02 AM »

I wanted to map the direction of coolant flow in an E30 M42. In the mess under the intake thread, there is a diagram or two showing coolant hoses, but I could not find one that actually maps the direction. In this excellent website, http://bmw3series.johnavis.com/blog/651/m42-engine-e30/, there is also a diagram  shown below which has flow direction information but the size and resolution is not so clear. This site does says that "coolant flows vertically up and thru the engine block, thru the cylinder head to the compact vertical-flow radiator".


So based on this, here is my first attempt. I do not currently have a 318iS to check this against. I have not gone into the detail of the intake heater hoses and bits. Like who cares what originally there



Any corrections, feed back or comments?

14

Interior / Re: E30 9k oem tach!

« on: February 11, 2014, 06:11:14 PM »

One I dummied up earlier. 

15

Swaps, Turbos, Buildups / Re: Harmonic damper for high revs

« on: May 02, 2013, 10:53:58 PM »

don't worry. It is not like I am just buying it getting out the grinder and drill press and hoping it'll fit. I have been in contact with Fluidampr about a specific one off damper for a stroker M42. They do not develop one-off custom dampers. They will consider a run of at least 50 due to the due to the R&D, engineering, testing damper/engine combinations and manufacturing. I have been in email discussion with Fluidampr, I told them what I am doing and they have been helpful with information so far.

I have been researching this for sometime and discussions with two damper manufacturers, a couple of engine builders (one of whom has successfully adapted a fluidampr to his race 4 cylinder which stopped it destroying blocks), a couple of race car engineers one of whom contracts for a V8 supercar and TCM race teams and the other has built Targa cars, factory race and rally cars under contract. The latter engineer will doing the work. I have the Fluidampr fit and tolerance guidelines. Adapting harmonic balancers is actually quite common in Australian and NZ where we have had to adapt in the absence of specifically manufactured products.

I have extensively read pretty well everything on the ATI website and they are not practical for me.

yep the S42 does not use a damper at all. It uses a small diameter poly-V pulley and trigger wheel. The S42 also has different crank, rods, pistons, etc. Harmonically it is very different. If only the S42 cranks, etc were cheap and I could afford the frequent rebuilds.

This is a race engine. It is not for the street. I had considered not running one but I'd like some life out of the bearings. This is an informed process.