engine question
i saw a 1.8L beta on ebay. is the only difference between the 1.8L and 2.0L the stroke? 85mm for 1.8 vs. 93.5mm for the 2.0. it's a pretty good price, and i would be buying it to rebuild anyway, so i would ditch the rods whether or not it's a 2.0 stock.
edit:
i have another question, but i didn't want to pi$$ of random and make another post. hyundai lowered the compression on the L4 beta2 from 10.3 for the beta1 to 10.1:1. but the beta2 makes as much power as the beta1. i haven't seen the torque or hp curves, so maybe the beta2 has a broader power band, but how did they get the same power with the lower compression? just make it more volumetrically efficient?
[ November 15, 2002, 11:39 AM: Message edited by: turbulence ]
edit:
i have another question, but i didn't want to pi$$ of random and make another post. hyundai lowered the compression on the L4 beta2 from 10.3 for the beta1 to 10.1:1. but the beta2 makes as much power as the beta1. i haven't seen the torque or hp curves, so maybe the beta2 has a broader power band, but how did they get the same power with the lower compression? just make it more volumetrically efficient?
[ November 15, 2002, 11:39 AM: Message edited by: turbulence ]
The BETA II is the motor that's been factory overrated smile.gif Maybe that's where the lower compression came into play hehe...
The 1.8L is a good project motor, I wouldn't even worry about punching it up to 2.0L. The crazy Korean and Australian racers are making big amounts of power on the 1.8L as well, at least that's what we're being told.
The 1.8L has several advantages over the 2.0L now that we know the crank is strong enough:
First, it has a shorter stroke and longer rods. Thus, the motor revs much happier and should technically be able to rev HIGHER without harming anything. Could be a lot of fun smile.gif
Second, all the parts swap back and forth from the 1.8 to the 2.0, but the 1.8 block is cheaper from most points. Yay again.
Only problem you're going to have is that the 1.8L rods are currently not made by anyone aftermarket-speaking, so that will still be a custom job. Still, if you wanted them, Crower would build you a set for $675 -- the same cost they charge for 2.0L rods.
I'd suggest trying it, you'd have a unique project engine that nobody else is working on AND that has some good potential.
The 1.8L is a good project motor, I wouldn't even worry about punching it up to 2.0L. The crazy Korean and Australian racers are making big amounts of power on the 1.8L as well, at least that's what we're being told.
The 1.8L has several advantages over the 2.0L now that we know the crank is strong enough:
First, it has a shorter stroke and longer rods. Thus, the motor revs much happier and should technically be able to rev HIGHER without harming anything. Could be a lot of fun smile.gif
Second, all the parts swap back and forth from the 1.8 to the 2.0, but the 1.8 block is cheaper from most points. Yay again.
Only problem you're going to have is that the 1.8L rods are currently not made by anyone aftermarket-speaking, so that will still be a custom job. Still, if you wanted them, Crower would build you a set for $675 -- the same cost they charge for 2.0L rods.
I'd suggest trying it, you'd have a unique project engine that nobody else is working on AND that has some good potential.




