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Discussion Starter · #1 ·
o.k. here the deal, my buddy just picked up a pretty clean 87 escort gt 1.9 h.o. the motor is shot according to the old owner, we will be checking it out tom. well if it is messed up, i have a 2nd gen 1.9 motor sitting around, so to my ?'s

can i just put the 2nd gen motor in and swap it to a dizzy and exh and intake manifolds to the 1st gen, iirc that will not work???????

can i use the 2nd gen bottom end and put the 1.9 h.o. head on it and be good?

or maybe some other option???
 

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use the rods and crank from the 1.9 bottom end and the pistons and head from the 1.9HO. I'm sure it's doable, not sure if there will be any gains or losses, my 1st gen/2nd gen LX knowledge is minimal.
 

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2nd gen rods are identical to 88.5-90 1st gen rods (no difference between HO and CFI). Pre-'88 models have larger rod journal diameters, and the rods themselves are shorter. The wrist pins are located lower in the piston. So, if he uses a 2nd gen crank/rod combo with that '87 HO piston, he's gonna have it push waaay past the deck, and it won't work.

Yes, the 1.9 blocks will swap, but some of the mounts are not the same. I know the oil pumps are different, too.
 

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Discussion Starter · #7 ·
well my buddy just want to get it up and running, so can just swap the h.o. head on the 2nd gen bottomend, if so what elsed need to get swapped, and i assume the 2nd gen will bolt to the 1st gen tranz?
 

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I'm unsure if the 2nd gen block bolts to the 1st gen trans. Nobody has done it before that I know of. If you put the HO head on the 2nd gen block, you'll get around 7:1 compression, and the thing will run like butt.
 

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I think I remember reading somewhere on the forums that the 2nd gen LX used a Mazda G-Series transmission while the 2nd gen GT used an F-series transmission. Or the other way around. I don't know if the bolt pattern is anything like Ford's MTX-3's.
 

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2nd gen pistons are the same as CFI pistons. It's much lower compression than it should be. Stock is 9:1, and with domed heads you'd need pop top pistons. If you run dished pistons (as CFI/SEFI do) you not only lose compression due to lack of dome, but there's the crater in the piston top. It would work for boosting, just like doing an SPI head on a 2nd gen block, but it's not as low of a ratio as using an HO head. I don't think it's a smart idea, as the engine really won't have much power with that low of compression. The HO cam (if the head has that in it) will help replace the power lost, but it still won't be quite right.
 

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But, to answer the question about rotating assembly, It works just fine. I drive my car every day with no problems, and the car was traction challenged at the drag strip, so the it is not that bad for power. If you can get HO pistons, do it. If not, the dished pistons won't kill you.
 
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