1600 stroker?

[PatTroy]

Just wondering if anyone is aware of a stroked crank for the 1600 blocks?

[70spider]

I don't think so but you might want to email http://allisonsautomotive.com/ or http://www.autoricambi.us/ they would know.

[carl]

Given that the 1800 and 2000 motors will bolt into the car, I'm not sure why anyone would bother with stroking the 1600 if the purpose was just to increase displacement.

carl

[DanD]

A 1400 has a different block and crank than a 1600. The 1600 has the same stroke as an 1800, but the 1800 has a larger bore, and a bigger crank and block than an early 1600. A bored later 1600 is an 1800. A 2000 engine is a stroked 1800, with a different crank and a taller block.

All these engines are interchangeable except the 1400, because the 1400 has a smaller flywheel, and you need an early bell housing on the transmission to bolt up a 1400, or a larger bell housing to upgrade a 1400. All the other engines from 1600 up have the same size flywheel and will all bolt up to later transmissions. The bell housings are interchangeable on any transmission.

The front frame of the early cars ahead of the radiator is straight, and makes bolting a larger engine into an early car a little tight in front, as the block is longer to allow a larger bore in the cylinders. The later cars have a front radiator support that bows to the front, so plenty of room for any engine.

Lots of people like the early 71 and 72 1608 engines because they have better stock compression, and the least emission controls. The larger engines are nice to build up though, and very robust. A 2000 engine with an 1800 head and 72 cams with a rejetted 74 carb is about the best US based hybrid you can make, but a real built engine would be the true ticket for a fun ride.

[vandor]

> A 2000 engine with an 1800 head and 72 cams

All US cams have the same profile. Fiat changed the way they measure valve timing, so if one just looks at the numbers in the manual then the later cams seem to be a lot weaker. In reality, the profiles are exactly the same.

[PatTroy]

Should have probably had more detail. The reason for stroking the 1600 is due to racing class rules. Swapping a motor carries a more harsh timing penalty than stroking. The target of the stroking is mostly to increase CR while still allowing a flat-top piston. The displacement is almost a bonus.

Thanks for everyone's input!