CRV B20 Different Block Specs

[GSi_PSi]

I went down to the wreckers to pick up a B20 Block today but there was two different types of blocks?. Which block do i need to get which will give me the higher compression. How do i tell if its the 9:1 compression motor?
There was two B20B8's, one 97, and a 99 and one B20B4.
Which one should i pick up?.

[ZeForce]

You want a 99-01 B20b8 with PHK pistons, if it's just the short block you will see "PHK" stamped into the top of the pistons

[GSi_PSi]

ohhk cool. on the other b20 motors is there another stamp?. All three motors are assembled with the head, is there a way to tell without exposing the block?.

[ZeForce]

The B20B8 should have the PHK pistons

[VT3C]

doesnt the JDM B20Z have even higher compression ? but probably V hard to find.

i think the Intake Manifold will have the series cast into it - so look to see if it saysPHK on the IM... possibly..

[ZeForce]

The "JDM" and "USDM" B20Z is the same as our AUDM B20B8 both have the PHK pistons which gives you a slightly higher compression ratio

[GSi_PSi]

zeforce can you confirm what VT3C said, as the wrecker is saying, if he pulls it apart i have to buy it. =( also will i gain same compression as you if i installed worked B16A2 head?.

[ZeForce]

B20B8 + B16a PR3 head = 9.96:1 compression
B20B8 + B18c P72 head = 10.14:1 compression

This is with OEM gasket and untouched deck or head

[GSi_PSi]

Alrite guys ive bought the CRV B20B8 99 one. He gave me the whole engine and he insisted its the Hi-Comp one and to return it if its not. How do u i remove the head from the block? Ive taken the Rocker Cover off what next?

[ZeForce]

Do you have a copy of the service manual? If not PM me.

[jdm_b16a]

How do u i remove the head from the block? Ive taken the Rocker Cover off what next?

Get the FSM - it can be downloaded from a number of sites worldwide.

You remove the head by undoing the head bolts in the correct sequence, as outlined in the manual. Use a torque wrench calibrated to the correct force (in steps). Then pop the head off by tapping it with a rubber hammer to loosen the gasket. You may also have to use a large screwdriver but be careful not to damage the head surface.

I assume you've removed all the other bits, like timing belt, etc. As a rule, you should set the head/belt to Top Dead Centre (TDC) before removing the head. It's all in the manual - very thorough. Be sure to use a clean workspace with plenty of room to move about.

Peter

[dsp26]

^he´s not there yet.. to be specific you have to remove the cams to access the bolts

[ZeForce]

Check his build thread

http://www.ozhonda.com/forum/showthread.php?t=108234&page=2

[GSi_PSi]

nah ive got it off now its all good. my builder confirmed its hi-comp

[ZeForce]

nah ive got it off now its all good. my builder confirmed its hi-comp

:thumbsup::thumbsup::thumbsup: