I know that

95.5-98 JDM B20B are 8.8:1 p3f compression pistons
Rated at 126hp

99-00 JDM B20B are 9.6:1 PHK compresion pistons
Rated at 146hp

97-98 USDM B20B are 8.8:1 p3f compression pistons
Rated at 126hp

99-00 USDM B20Z are 9.6:1 PHK compression pistons
Rated at 146hp


does it matter what b20 bottom block i get for my b20v conversion?
i know the year have different hp and cp. thx HT


Modified by ThaSi at 11:19 PM 2/20/2007

 

bump

 

no it doesnt matter.

 

if you plan for internals later on it doesnt matter

 

Well besides the obvious...

If you use one of the motors with the higher compression ratio then you will obviously have higher compression with the b20vtec setup, so yes it does matter IF you plan on keeping the bottom end completely stock.

However it is a good idea to get new rod bolts and get the rods shotpeened if you plan on keeping them. B20 dont take high rpms well for extended periods of time (8000k rpm+).

 

thx end thread

 

srry for bring this old thread back but what would be the diff if i did just want to keep the b20 stock, im planning on doing a b20v and i was wondering what b20 spec would be good for daily driving and ect im playing on putting a b16a2 head with itr cams

 

The higher the compression, the more power you make....B20Z is great

 

b20z are torquey i ran a 15.1 with stock motor, intake and exhaust