Ireland Engineering m10 cams

[pazza]

Guys look`n at maybe re-build'n my m10 (my e30 runs a 1.8L m10 k-jet) and was look'n at the camshaft offered by IE. I am think'n there IE 302 cam, but I read some where that there is a difference between the 2002 distributor HELICAL GEAR WHEEL and my e30 m10 1.8L distributor HELICAL GEAR WHEEL.

does anyone know?? Thanks

[SoopaGhetto]

no real difference; if you were using the 2002 dizzy with the e30 cam, it would spin in the opposite direction. if you use a 2002 cam with e30 dizzy, it would spin in the opposite direction. Though being k-jet, it may already be spinning opposite of l-jet. (not sure)

you can mount a 2002 gear to an e30 gear. ask me how I know :)

[LJ851]

There are two types of M10 cams, the helical gear on the back of each one is cut opposite to match the distributor.

The 318 M10 spins the distributor backwards compared to all the other M10 engines. You need to use a distributor that is designed to spin the direction it is spinning.

Sure, you can swap the drive gear so it meshes with the "wrong" cam but it will spin the dist in the actual wrong direction and retard your timing as rpm increases instead of advancing the timing as is required.

Not sure what soopa ghetto is talking about, maybe just living up to his user name but i can assure you spinning a dist the wrong way will NOT work.

There is a thread on r3v right now where the OP did just this.

[deutschman]

I would just call them and ask. Andrew or Jeremy will be very happy to help you out. If you get a grump guy that seams like he doesnt want to talk to you thats Jeff lol

[325ix]

I don't have any insight on the topic at hand but, what does an m10 feel like with a cam that big? It must be extremely high rpm biased.

[SoopaGhetto]

There are two types of M10 cams, the helical gear on the back of each one is cut opposite to match the distributor.

The 318 M10 spins the distributor backwards compared to all the other M10 engines. You need to use a distributor that is designed to spin the direction it is spinning.

Sure, you can swap the drive gear so it meshes with the "wrong" cam but it will spin the dist in the actual wrong direction and retard your timing as rpm increases instead of advancing the timing as is required.

Not sure what soopa ghetto is talking about, maybe just living up to his user name but i can assure you spinning a dist the wrong way will NOT work.

There is a thread on r3v right now where the OP did just this.

if you use a cam from an 02 and an 318i distributor, it will turn it backwards. if you use a 318i cam with an 02 distributor, it will turn it backwards. the term backwards is in relation to stock setup rotation.

there are many combinations throughout the years. I believe some e21 used 02 style cam but had the distributor spin the same e30 direction. (been a while)

I actually did this. guess my name fits me...or I actually researched ;)

[LJ851]

^ What are you saying? I am having a hard time making sense of your posts.

The end result is that your dist rotation needs to match the helical gear rotation on the cam you are using.

[SoopaGhetto]

^ What are you saying? I am having a hard time making sense of your posts.

I cant tell if you are being serious?

if you use a cam from an 02 and a 318i distributor, it will turn backwards. if you use a 318i cam with an 02 distributor, it will turn backwards. the term 'backwards' is relative to stock setup rotation. The stock 2002-m10 rotates in one direction, while the e30-m10 rotates in the opposite direction.

if you are questioning my reference to the 2002 engine, Ireland Engineering develop m10 parts for those, so of course using their cam would necessitate proper distributor implementation if the intended application is not a 2002.

In the past I used my stock e30-m10 distributor with a 2002-m10 schrick 292 cam and had to replace the distributor gear. I can not recall exactly what vehicle I got it from (2002/e21) but everything was fine with correct rotation.

The end result is that your dist rotation needs to match the helical gear rotation on the cam you are using.

This! I suggest going MS or some other form of engine management.

[pazza]

Thanks guys for your input!!
So if I use a IE 2002 cam should I then use their IE Tii mechanical advance distributor with an electronic ignitor OR should I go distributorless??

It looks like it would make the a whole easier.

I live in Australia and we dont have too much people that have a whole lot of knowledge about m10s,.

Also megasquirt ecu's are not popular as no-one over here has any idea about them. I would like to use twin webers.

[SkiFree]

Thanks guys for your input!!
So if I use a IE 2002 cam should I then use their IE Tii mechanical advance distributor with an electronic ignitor OR should I go distributorless??

It looks like it would make the a whole easier.

I live in Australia and we dont have too much people that have a whole lot of knowledge about m10s,.

Also megasquirt ecu's are not popular as no-one over here has any idea about them. I would like to use twin webers.

Lorin has got you in the right direction.

Either of those options would work fine. I'm not sure if the benefit of a distributor-less setup would be worth the added expense on what sounds to be like a street hot-rod, but that's your call.

There's a couple of decently versed M10 guys in Australia, but none nearby off the top of my head though (Tazmania, Gold Coast).

[LJ851]

Thanks guys for your input!!
So if I use a IE 2002 cam should I then use their IE Tii mechanical advance distributor with an electronic ignitor?
I would like to use twin webers.

A proven combination. This is route i would choose for your goals.

It looks like it would make the a whole easier.

Yes it would.