two engines, what do I do with them?
 

I have the 1.7 withthe 96 mm pistons and the heads that were fly cut.

I also have this 2.0 with a few leaks in it.

I only have one 914 that is going to be getting an engine.

Which heads flow better? which case is better? Does the flywheel bolt to either crank?

My budget won't allow me to buy very many parts, so I would like to use mostly what I have here.

are there templates out there for porting the heads? How would they compare to porting a big block from a muscle car?

WHich way would *you* go?

I'll try to answer from what I know. You have a good combo of parts.

You can basically make a 2056cc engine with what you have. Use the 96mm P&Cs with the stock 2.0 crank and heads. The 1.7 rocker arms are technically better and can be modified to use 911 adjusters, but if you aren't going to rebuild the heads, you might just leave them. The condition of either of those heads is probably the single biggest compromise of the whole build. Use the engine tin from the 2L.

The flywheel should bolt to either crank.

It might be worth it to send the heads to Len Hoffman at HAM inc. He seems to be the preeminent head guy.

you should be able to get in the neighborhood of 110 hp and much better than stock torque. You could build yourself a nice 914S.

If I were to come up with a carb, and maybe a nice cam profile to match it, what would that do for me?

I've been trying to play with these parts virtually in desktop dyno, but I need some serious CAM profile help.

...and where can I get the rings that go between the cylinders and the heads? I haven't been able to find the 96mm ones.

Jake Raby is the only one I know with the extreme amount of engine knowledge to answer the cam question. He sells the parts as does Pelican. I would support either.

Carbs, even with the right profile cam, will probably not make as much power as the stock FI, all other things being equal.

The 2.0 heads will flow more air than the 1.7, you will want them checked out for cracks.

The 96es for the 1.7's 66mm crank will not work with the 2.0's 71mm crank. The pin height is wrong, so you'll either have ~3mm of deck height (you want 1mm), or the pistons will stick out ~3mm from the top of the cylinders at TDC.

The 2.0 heads will flow better than the 1.7 ones. But they'll probably need more work (crack repair, etc.).

A single-carb setup is about the worst way to get air and fuel into the motor.

Dual carbs, with an aggressive cam and the rest of the motor built to match, will make significantly more power than can be made with the very mild cam the stock EFI forces on you.

The flywheels should be identical, except for the balancing.

I'd go with a stock 2.0 motor, complete with stock EFI, if I could. But that's my preference.

--DD

Thank you for your input.

Dave,

So the difference isn't in the connecting rods, but in the pin height? It's a good thing I asked first. That could have been a mess.

The rods are different, and so is the pin height in the pistons.

--DD

It will make more power, I suppose I mis spoke, but it will be a tempermental beyatch with a big cam and lots of carb

So my best option would be to clean up my 1.7 really good, prove that it will run, and sell it?

Then rebuild my 2.0 w/ FI, make sure my heads are solid, and do the leak proofing mods mentioned here in the tech articles?