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Discussion Starter #1
So my old 91 std hatch is about to become a small project. It currently has the stock, worn down D15B1 - 70 tired horses, smoking at high RPMs, leaking oil somewhere, DPFI - so worn down. I’m looking at a couple options here for what I can do with it. I’m not looking for huge power numbers or anything like that, but I would like a little more to it so it’s not straining to pass cars on the highway. Thinking MPFI, bolt ons and maybe a cam. So here are my questions:

I know a MPFI swap is pretty much a given in order to really see any gains. Is that swap, a bisimoto or similar cam and possibly pulling and rebuilding the engine going to be really worth it? I’m not sure what other parts I would need along with that. The pistons probably need replaced to take care of the smoking so if I’m going that far I might as well replace all of the old leaking gaskets.

Or

I have found a D16A6 for sale that’s not too expensive. Has 120k on it. I’d still need to add the MPFI and would do the I/H/E bolt ons and would look into a cam, would that extra .1 liter make any real difference or would I be better off taking that cash and maybe finding some pistons to bump the comp in the 15 up a little.

The car needs some other stuff as well, and this would be my first attempt at building or rebuilding an engine, so just looking on for some options and ideas for this thing. It’s not a daily and more of just a weekend project car that hopefully when said and done will be a little more fun to drive
 

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D16A6 is a better engine. Rebuild it and swap it in. Don't waste money on a cam. Find an ex transmission.
 

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A6 motor all the way. Easier to get parts for as well.

Leave it stock . . . the MPFI swap and changing the motor out is enough of a task for a weekend or two.
 

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Discussion Starter #5
Thanks guys. Actually had a couple offers on the car in the past few weeks so I was looking at selling/trading it, then a couple days ago, after i rounded a turn, the old D15 stuttered, died, and wont restart, it only cranks on me. Quick look under the hood shows the timing belt cover is cracked at both of the bolts, some coolant on the front of the block by the exhaust manifold and some residue on the intake manifold.

So selling it is out, now I guess i am going to be hunting an A6 to swap in once I get it towed from the dealership I work at to somewhere I can park it and put some time into it
 

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You should definitely get a newer better engine. The d16z6 engine is really common but since it has vtec it's a bit more work to finish swapping.

Before you put the new engine in you should replace all the gaskets so it doesn't leak, besides the head gasket you should find an engine with a good head gasket.
 
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