I have been comparing the specs on these two engines and found that they are very different. the b16 is smaller, revs higher, puts out more horsepower whereas the b20 is larger displacement, doesn't rev as high, but has much more torque. What I was wondering is, isit easier to get power fom a smaller high revvig engine or a larger lower reving engine? For example, if I put i/h/e/ on both these engines which am I notice more power gained? Also, is an engine with more torque and less horsepower going to produce better times than engine with more hp and less torque, or not?

 

it all depends on the weight of the car and where it makes torque.
if it makes torque on top of the revband, it will lend itself toward
high speed accleration. if it makes its tq down low, it will be better
off the line. if you tune a motor to have both good low end, mid
and moderate high end you can have the best of both worlds.
the amount of tq gained with the B20 over the B16 is significant
just build a 1.8 block like the GSR motor. You will have good
success with it.

 

or put a b16 head on a b20 block and have the best of both worlds.
high revving hp, mad torque.

 

True

 

alright, thanks for your advice mikesarr gsr. What kind of times are you getting with those numbers out of your all motor gsr?

 

Can you tell me how a block like the B20 can rev high?

 

if you slap a b16 head on and use a b16 ecu
it uses the b16 rev limiter
just dont go slapping it every time you step on the gas
the rod/stroke ratio isnt made for 8400 at every light.

 

Yeah, I wouldn't feel right about revving that thing even close to what I rev a b16.

 

Yup. I just wanted people to know that the block isn't made to rev that high, that's one of the main reasons a Frank motor doesn't last.

 

I like my B16 with nobody else in the car, but add another person...
WHEW!!!! Where's the Beef man!

 

Hey, if you get different rods to change the ratio, will you be able to rev higher with a frankenstein B20?
I've seen the "Dominator" motors at importbuilders.com, and they had Eagle rods. I figured they might have changed the ratio on them.

 

is the crank on a b20 weak like a b18b crank???

 

the B20 crank IS a B18A/B crank. What makes a B20 a B20 is the wider diameter pistons.

 

the block is sturdy like all honda blocks, but the rod to stroke ratio is trying to push the piston through the side of the cylinder wall. also, the oiling system is designed with a low redline in mind. remember, these blocks come out of a CRV and an LS. not high revving motors. even if you change the rods, it will not change the rod to stroke. destroking with a B17 crank will help, but the oiling system cannot keep up.

 

Doesnt the b16 put out 160hp while the cr-vtec put out 200hp?? And I thought even the b20 non-vtec put out 170....

 

lol