Never mind about this unless you are interested as I no longer need to do it..

 

 

Alright, this probably sounds crazy but I have my secret reasons

 

I want to change the direction of rotation of an EJ22.

I was thinking (leaving the computer stuff out of it for now) all that is needed is different cams.. But then I thought what if you flip the rockers up the other way so the exhaust cam lobe is on the intake and the intake lobe on the exhaust valves? Are the lobes the same for intake as exhaust?? Or are the valve timings really that different?

If you could do this you would be able to put an engine in the rear and still keep 4WD, although this is not what I want to do

 

So, let me know what you think. Obviously the crank sensor and maybe cam sensors might need playing with, but I would think the spark would just need a order change.

 

I am crazy.

Ok, that was crazy and wouldn't work. I found the valve timings and figured it out..

 

So what if I ran the crank backwards, but then put a gear off of it for the cam belt to run the cams the same direction as normal?

.....

Wouldn't it take just a custom-ground cam?nothing else really knows/cares what direction it's turning. well, maybe oil punp, water pump, all the accessories, bout the accessories you could rig a serpentine belt and run it with the back of the belt (i.e. VW double-sided belt). oil pump, maybe get a custom pump body made to accept the opposite rotation (input/output switch or something). Once you get the cams made, just change the wiring around to reverse-order for the injection/ignition, and you should be ok...the computer won't know the difference, as long as you don't get comfused when you're rigging it all.

what in the world are you trying to do? AWD/4WD transplant into a VW?

~Erik~

I thnik the crank and maybe cam sensors have a few more lumps before TDC so the engine knows when it's at the top.

I haven't thought about the oil pump yet, thanks. It would be a problem..

I was thinking of trying to do it cheaply without needing new cams.

Only accessory needed is an alternator. And I'm pretty sure it doesn't care which way it turns.

 

It involves VW parts, but still in a Subaru.. Ok ok, stop it.. This is top secret and I'm trying to keep it that way.. (I like to be the first :-p)

It's a time machine!

Oh crap... Why'd you have to spoil it... BTW, I got the plans off of ebay, I just need a reverse engine to run the contraption and I refuse to use honda :-P

I just thought... If I run the cams clockwise, but the crank anti clockwise the oil pump, water pump will be still going the right direction, this means they won't be effected! .. I think I'm on to something...

Use a Corvair engine. Did you get those down there? I figured that was what you were going to put it in.

I haven't ever heard of that engine/car? So I guess we didn't get them.. No, I really want it to be a Subaru engine.

google corvair i used to own one.

 

To reverse the engine, you need to flip the cam and crank sensors. Next you need a custom ground cam. The rest of the engine doesnt really care which way it rotates.

 

What transmission are you going to use? It may be easier to just flip the differential, which is a very common thing to do.

 

 

 

nipper

google corvair i used to own one.

 

To reverse the engine, you need to flip the cam and crank sensors. Next you need a custom ground cam. The rest of the engine doesnt really care which way it rotates.

 

What transmission are you going to use? It may be easier to just flip the differential, which is a very common thing to do.

 

 

 

nipper

I sware I've seen a car or two with the front end of that car, but I have never seen the name in Australia. We get Holdens instead of Chevy's here.

Oil pump and water pump won't work in reverse.

I plan on using the 5sp from a normal EA82. Or even maybe my FT4WD EJ/EA box.

I don't think the crown wheel will go on the other side as the low range is there in the way but I will look at the box I have apart to see what can be done before I make a move on running the crack backwards.

I had an idea of using a gear off the crack running motor bike sprokets and chain to the oil/water pump plus both cams. This would be all in a custom cast alloy timing cover filled with oil. But... I have changed my mind so I know do not need to reverse the direction of the engine. It was just getting to much for what I was going to get out of it....

The oil pump is turned directly by the crank, so you'd have to mount a remote one to be able to reverse it's direction.

The oil pump is turned directly by the crank, so you'd have to mount a remote one to be able to reverse it's direction.

 

Normally the pump does not care which way its spinning. Take one apart and double check.

 

nipper

Normally the pump does not care which way its spinning. Take one apart and double check.

 

 

the pump doesn't care... but the oil passages do... if you think about the way the oil pump works it would just force oil back down the pickup tube... make the oil pan all bubbly...

 

 

the pump doesn't care... but the oil passages do... if you think about the way the oil pump works it would just force oil back down the pickup tube... make the oil pan all bubbly...

 

I'm pretty sure the pump mechanism could be flipped over and then it woul make it oump back into the passages correctly.