Ok, here is the plan to date.

I have an EA engine which was rebuilt, bored out bigger pistons new oil pump etc.

I drive an EF series 1, with 350,000km on the clock and the engine is getting a bit rattly and tired. The head gasket was slightly leaking at cylinder no 6 but that has now stopped .



I would like to know IF

A: the EA engine's bottom end will be compatible with the EF's running gear

B the EA's bottom end is in any way different to the EF bottom end (I'm thinking there will be a few less sensors in the block)

I know the EF head will fit the EA engine. but is there any downside to using the ea head as it was pretty much totally redone as well.

I could also drop the ea engine in as it is, and rebuild the ef engine but yeah that's another fair whack of money.


Main thing is, will the BALANCER fit the EA engine as the EF runs coil pack.


Thanks for the advice in advance - Sam

theres no difference in blocks that i know of...ive got an ea block and an ef head on it...havent turned it over yet as i havent got it in the car but as far as i could tell by looking at a ea and ef block they were exactly the same..
u will have to fit the timimg gear from the ef motor balancer and intake manifold and the coil pack

Also u need to Tap a thread for the knock sensor.
The blocks are very simular but not identical.
Nothing you'll need to worry about tho.

as above you'll need to install the EF front timing cover.

that is cool, I will be able to get some spare parts to go onto it.
Main problem I was told is the crank shaft's input was a bit shorter so the bolt on the balancer would not go on easily.

I did see on a series 2 ef a sensor (looks to be a temp type sensor could be the oil sensor!) on the block near the head on the passenger side bout halfway through.

thanks for the advice people! Better than getting rid of the engine I spent 2500 dollars on sitting there doing nothing.