cpforyou

Does anyone know if the F20B Accord SiR-T block will mate with an H22A head?

KTeller8

should, i ve seen a few. that come through our warehouse. not bad pickup for like 1100 shipped

not sure why youd want to throw the h22 head on there. dont know if it will help to much both are dohc and vtec

Edit: sorry i was talking bout the f22b dohc lol


[Modified by KTeller8, 1:15 AM 3/30/2003]

Nick H

it probably won't due to the fact that the bores are different on the two motors...

SiR-t has an 85mm bore
H22 has an 87mm bore

cpforyou

Reason I ask is because I'm did an F20B swap for my friend. However, another guy is selling a built H22A head, complete with valvetrain, skunk2 cams, etc. That's the reason why I ask.



[Modified by cpforyou, 4:38 PM 3/30/2003]

ALLMOTOR18

How much do you do swaps F20B swaps for?

cpforyou

PM me for a quote.

ALLMOTOR18

what shop is it?

cpforyou

You have PM!

Showoff

Yea what are the reading for F20B JDM motor meaning HP and TQ stats and redline ? i have an JDM H22A and got lucky getting one with an type S tranny and LSD i was thinking building the F20B motor will H22A parts fit ? or should i build the H over the F motor ? and does the F20 likes to rev better then the H22a ?

cpforyou

F20B Specs:
2.0L (1997cc) DOHC VTEC Engine
200HP @ 7200RPM
20.0 KGM @ 6600RPM
11.0:1 Compression Ratio
Bore X Stroke: 85.0 x 88.0

H22A Specs:
200HP @ 6800 RPM
22.3 KGM @ 5500 RPM
10.6:1 Compression Ratio
Bore x Stroke: 87.0 x 90.7

H22A Type S Specs:
220HP @ 7200 RPM
22.5 KGM @ 6500 RPM
11.0:1 Compression Ratio
Bore x Stroke: 87.0 x 90.7

There are pros and cons with F20B over an H22A.
F20B as you can see, has a smaller bore, and a shorter stroke. This results in less torque. The walls are thicker due to a smaller bore, and it can rev higher than an H22A. This allows more horsepower at high end, as well as taking advantage of gearing in such high RPMs.

H22A has a bigger bore and stroke, and a worser R/S Ratio than an F20B. Because of this, the walls are thinner, and it cannot rev as high as the F20B w/o being BUILT. You do however, have more torque off the line, but your high ends tapers off sooner than an F20B.

For a Civic, it might be better to go with an F20B, since the torque in the F20B is already more than enough. For an Accord or Prelude, the H22A might be better since those cars are heavier to begin with. Each has its pros and cons.

All-Motor H22A

If you ask me, I don't think the F20B is worth it. With more torque, you can start of the line quicker, get lower 60 foot times, and pull harder throughout the run. The stock block can handle 8000RPM on stock bottom end. No need to go up to 9000RPM when you have so much torque.