1.8L L-Jet to 2056, what can I use? Options

[Rob-O]

Have a few threads about my engine dying, but wanted to ask this in a separate thread. Currently a 1.8L but want to do a 2056. If I buy a 2056 long block, I assume I can use all of my L-Jet. But I have questions:

1. Exhaust from my 1.8L will all fit and can stay, correct? I'm almost certain exhaust port spacing is the same on all engines for our cars.

2. I would need new upper engine tins since the spark plug location is different. Or do I plug and redrilll the 1.8L tins?

3. Do the rest of the tins from the 1.8L work?

4. If I use 2.0L upper tins, did they have a stanchion to attach a fuel pressure regulator?

5. I thought 1.8L FI runners have four bolts where they meet the head and 2.0L have three. Do I just drill the 1.8L runners for the third bolt (is there even room for that)?

6. Are the lengths and positions of the L-Jet runners even compatible with the 2.0L?

Anything else I'm missing?

[swood]

I’m just sorting through what i have to build my 2056 Ljet. Im presuming a 2.0L throttle body wouldn’t fit the 1.8L intake runners requiring use of the 2.0L ones with a bolt pattern needing modification. Sounds right? I’d like to stick with the Ljet at first anyways

[ClayPerrine]

I’m just sorting through what i have to build my 2056 Ljet. Im presuming a 2.0L throttle body wouldn’t fit the 1.8L intake runners requiring use of the 2.0L ones with a bolt pattern needing modification. Sounds right? I’d like to stick with the Ljet at first anyways

You do not have to use 2.0 Heads for a 2056. The 1.8 heads work fine. Just have 2.0 valves put in them. Then get a Bus throttle body to make it breathe.

The 2.0 throttle body won't fit on the 1.8L plenum, and you have to find a very rare air intake tube from a 912E to use it with the stock 2.0 plenum, and you have to change out the throttle switch assembly.

Clay