Spigot bearing and fan switch

[mr_dink]

Hi,

does anyone know what size spigot bearing I need to order for using M50B25 with m40 gearbox? A part number would be even better.

Similarly the fan switch, I seem to remember there are 2 different temps available? Does anyone know which temperature I need or a part number?

TIA

Dink

[bimanut]

For the spigot bearing you need to measure the input shaft on the M40 box.(i think its 15mm,but not 100% sure)
Just tell BM that you need a bearing for an M50 engine and tell them the size of the shaft.

As for the temp switch i dont know.

[Cook318IS]

you will need an m40 spigot bearing. As for the temperature switch - what thermostat do you have? 88 degree one i presume?

[bimanut]

You sure about the M40 spigot cuz i used an M50 one and it dropped in sound

[Cook318IS]

its what i have on my non vanos m50 with 316i m40 box

[mr_dink]

Haven't looked at the thermostat yet was going to order a new 88 degree one with the alloy housing.

My M50 was a manual out a 1992 e34. Anyone know if the spigot bearing in it will be suitable?

[bimanut]

You must be able to use either then.

http://www.e30zone.net/modules.php?name ... c&t=159997

[mr_dink]

You must be able to use either then.

http://www.e30zone.net/modules.php?name ... c&t=159997

So was the input shaft on your M40 box 15mm?

[mr_dink]

Is the spigot bearing the 'grooved ball bearing' that is listed but not pictured on this diagram?

15x32x10mm - is that 15mm internal dia 32mm external 10mm depth?

[E30BeemerLad]

I used a m20 spigott bearing with the m42 gearbox on my M52 conversion, using M20 flywheel & clutch.

[mr_dink]

I used a m20 spigott bearing with the m42 gearbox on my M52 conversion, using M20 flywheel & clutch.

Is that a 12mm spigot then?? Think I'll just have to measure my input shaft!

[Cook318IS]

Go to bmw with your vin / numberplate of your e30 (i presume you are doing it to the e30 that came with the m40 box?) and ask for a spigot bearing for that car. Thats what i did because bmwfans.info lists two different shaft sizes.

I'd definately change the thermostat to an 88 degree one, it makes a great difference to the running temperatures. Your m50 should already have an ally thermostat housing though If you use the 88 degree thermostat and are using a twin speed fan you will need a 81/88 degree twin temperature sensor iirc.

[mr_dink]

Go to bmw with your vin / numberplate of your e30 (i presume you are doing it to the e30 that came with the m40 box?) and ask for a spigot bearing for that car. Thats what i did because bmwfans.info lists two different shaft sizes.

I'd definately change the thermostat to an 88 degree one, it makes a great difference to the running temperatures. Your m50 should already have an ally thermostat housing though If you use the 88 degree thermostat and are using a twin speed fan you will need a 81/88 degree twin temperature sensor iirc.

Thanks, I may have an alloy stat housing already, the engine is in my mate's lockup at the moment so can't be too sure!

[mr_dink]

Right, after some further research about spigot bearings I've determined that -

External diameter is the same on m20/m40/m5x @ 32mm

m20 and m40 boxes have a 12mm input shaft

m50 boxes have a 15mm input shaft.

So I've ordered a 12mm spigot part no 11211709681.

Does anyone have part numbers for the 88 degree thermostat and the 81/88 fan switch?

Thanks.

[wess]

88 degree stat 11537511580
80/88 degree switch 61318361787