A couple inline six questions

[Fusion]

I'm looking for a motor for an out-of-car project and it has to have these requirements:
- inline six
- single overhead cam
- aluminium block
- can be diesel or gas

I chose I6 because they seem the most balanced to me. I know I could look at I4/5s, if all else fails.

The problem is that BMW started R6 alu blocks with the M52, thus 24V. (I didn't study M engines since price is an issue.) If I remember correctly, Mercedes engines are pretty much the same.
I think the 4.0 Jeep engine might be what I need. Any others? Not pre-90's though as they would probably be hard to find.

And I have these really weird questions:
If I did get the M52, in theory - I know this wouldn't run, would an M20/30 cam have the correct spacing between cylinders (top view) and could timing be tweaked to the correct unity with the crank? Ie. to set Cyl1 to TDC, cam intake 1 pointing down, set chain, keep this timing even after many turns of the setup.
And a physics question - what is the approx. combustion pushing power on the piston in lbs/kg in these engines?

[gearheadE30]

Well, what is the engine going to be used for? Aluminum block SOHC I6's are going to be a little hard to come by... And M52 blocks are nowhere near the same as M20's, plus the timing system is completely different. After all of teh fabrication and design work, it would be cheaper to do just about anything else.

I'd look into motorcycle engines personally. You'll be looking at an I4, but they are extremely powerful and compact and are also pretty easy to find because of all the people who wreck bikes, heh....

[Fusion]

I'll look into them. My knowledge of motorcycle engines is zero but I'll see what I can find.

[tjts1]

B6304. You'll find it in any JY. Its DOHC and dirt cheap.

[Fusion]

I need SOHC, but I'll look at wat else Volvo made...

It's pretty much an art project where we want to show the cam-crank-piston movement. So I don't need a head (so you can see the pistons move) and I could also make a home-made cam, I was just thinking it would be easier to use an old cam because it has the gear etc. Maybe I could take just the intake cam and move it to the center, ditch the exh. cam and go from there.

[tjts1]

There is a 10 valve DOHC volvo inline 5 white block volvo but as far as I know alloy block and DOHC went hand in hand. Most Porsche 944s got an 8 valve SOHC alloy block engine.

[Fusion]

what is the approx. combustion pushing power on the piston in lbs/kg in these engines?

I still haven't figured this out, not even google knows. This is at idle btw.
And would anyone take a wild guess at what the crank power output might be at idle, no accessories, on let's say a ~200hp M52?

[SpecM]

why don't you tell us what you're doing with this engine?

[payney8]

I need SOHC, but I'll look at wat else Volvo made...

It's pretty much an art project where we want to show the cam-crank-piston movement. So I don't need a head (so you can see the pistons move) and I could also make a home-made cam, I was just thinking it would be easier to use an old cam because it has the gear etc. Maybe I could take just the intake cam and move it to the center, ditch the exh. cam and go from there.

[Fusion]

Yea, I don't really have an explantion for it.
If I were building a BMW tractor, I would've written it right away. This is just a project in the brainstorming phase.

[e30lov]

jeep 4.0L

[tjts1]

jeep 4.0L

Oh yeah! Thats totally alloy block and OHC

Hey I know. Cummins 6BT

[gearheadE30]

Out of curiosity, why does it have to be an aluminum block?

And the jeep 4.0 is SOHC. Good luck finding an I6 that is pushrod (OHC).

[e30e]

Out of curiosity, why does it have to be an aluminum block?

And the jeep 4.0 is SOHC. Good luck finding an I6 that is pushrod (OHC).

GM makes pushrod inline sixes, they have for hundred years now.

As of the for the OP, nothing what your asking for really exists in the mainstream.

[Conki]

Out of curiosity, why does it have to be an aluminum block?

And the jeep 4.0 is SOHC. Good luck finding an I6 that is pushrod (OHC).

You mean OHV.