Can you make power out of an eta motor?

[einstein57]

If i can get 29mpg cruising in an e39 then i think the same engine in an e30 should yield better #s

[ForcedFirebird]

My stock eta made 98whp/150wtq. Swapped the 885 top end and Motronic 1.3 and it made 134/145 with a stock head gasket and unshaven head. Need to bring it back to the dyno and see what it's at now with .015" off the head and a .020" thinner gasket.

That's what 40% power increase and only lose 5wtq? Best bang for the buck ($350 in JY parts and gaskets).

[digger]

My stock eta made 98whp/150wtq. Swapped the 885 top end and Motronic 1.3 and it made 134/145 with a stock head gasket and unshaven head. Need to bring it back to the dyno and see what it's at now with .015" off the head and a .020" thinner gasket.

That's what 40% power increase and only lose 5wtq? Best bang for the buck ($350 in JY parts and gaskets).

once you get rid of the 200 head it ceases to be an "ETA"

[ForcedFirebird]

once you get rid of the 200 head it ceases to be an "eta"

shhh! :p

[Timp]

If i can get 29mpg cruising in an e39 then i think the same engine in an e30 should yield better #s

Looks like this guy gets 31 in his 318is with an M52. There's also this thread but none of them are particularly impressive. Most of those are M50's.

[u3b3rg33k]

This is pretty simple - if you want to keep the eta motor - chip it and enjoy. if you want a setup that isn't designed around economy, ditch the eta setup and do an S54 swap. Fuck it, Put in a man's motor. Do an N63 swap.

[sloweste30]

ja1991, i wanna say mine was built in september of 87. I'm assuming that's a later model? u3b3rg33k, I agree with you, I'm just not a huge fan of the vanos motors. I'd be too scared for it to mess and me have no clue how in the hell to rebuild it, haha

[Timp]

My stock eta made 98whp/150wtq. Swapped the 885 top end and Motronic 1.3 and it made 134/145 with a stock head gasket and unshaven head. Need to bring it back to the dyno and see what it's at now with .015" off the head and a .020" thinner gasket.

That's what 40% power increase and only lose 5wtq? Best bang for the buck ($350 in JY parts and gaskets).

Nice. If you don't mind me asking, how did that effect your gas mileage?

[ForcedFirebird]

This is pretty simple - if you want to keep the eta motor - chip it and enjoy. if you want a setup that isn't designed around economy, ditch the eta setup and do an S54 swap. Fuck it, Put in a man's motor. Do an N63 swap.

Just like you? Preach what you teach.

[u3b3rg33k]

Just like you? Preach what you teach.

I didn't think the sarcasm would be lost that easily...

[sloweste30]

Well I just found out that my buddy is parting out his e34 with a m20. So he's going to sell me everything I need to do the swap for a really cheap price. He says around 200. I just have to figure out everything I need exactly. And to correct myself on a previous post my car was made in february of 87 so looks like I need a lot more stuff.