I am looking for suggestions on what I should do to the B20z2 motor.

What I have so far is
Eagle H-beam LS rods w/arp bolts
RS Machine 84.5mm ITR pistons
B16b head with minor port/polish
Skunk2 Pro2 cams w/cam gears
Skunk2 titanium retainers
GSR water pump
GSR oil pump
Arp GSR head studs
GSR Timing belt
JDM ITR 4-1 Header
Hondata S200 on P28 ecu, thinking about eCtune.
2000 Civic SI transmission

I know that I need a head gasket. I plan on refreshing the motor with new bearings, thrust washers, piston rings, and gaskets. Can you guys think of anything I am missing?

 

i think u should give it to me. good idea huh?

 

That is what people are saying, but they are also telling me that you will blow it up also/

 

It is gonna blow with Pro2s, might wanna put some better pistons in it. Valve reliefs aren't big enough.

 

Why would it blow?

 

do you know what valve reliefs are ? and what they do ? .... now do you know what pro 2's are and how big they are???

ill give you a hint '"p2v"

 

I am here asking this questions for answers. Not "it will blow"/

 

Alright, if youre going to keep the stock pistons, you MUST notch(enlarge) the valve reliefs on your Intake side of your stock b20 pistons IF you want to run the pro2s. If you choose NOT to notch them, you shouldnt run any cams bigger than ITRs/CTRs OR your valves WILL hit your pistons because the Lift on any aftermarket cam will cause the valves to go lower than if you had a smaller lift camshaft.

the valve reliefs on the b20 pistons are both(intake/exhaust) the same size as the EXHAUST valve reliefs on a "dohc vtec" piston as where the valve reliefs on, lets say a p72gsr piston, are different sizes with the intake being bigger than the exhaust BECAUSE the intake valves on a DOHC Vtec head is bigger than on the exhaust side.

Anyone can correct me if im wrong. Im a newb too.

 

If youre gonna tear apart the bottom end, I suggest your press those stock b20 pistons out and press in some NICE RS machine ITR-spec pistons. EASY extra 20-30whp AND you can use those cams no problem

 

I just ordered some eagle LS rods for this build.

 

WOW, I cleary stated why it would blow it. Maybe you should read some FAQ before you post.

 

 

Does anyone know where I can get a set of RS Machine Pistons in 84mm?

Should I go 84 or 84.5mm?

 

Bump.

 

they just told you plain and simple the valves are too big for the valve reliefs. dont cop an attitude cause u dont know what theyre talkin bout ya big dummy

 

I was not getting a attitude.

 

TRUE STORY i have seen this happen 2x and you can actually hear the piston slapping the valves as well.

 

rs machines.com should have em... google the rs machine web site then go there and order them .. think its called race axis or something cant remember been awhile

 

Btw, which engine manuals are you guys using for this build? Would any/all B-series engine manuals lead me in the right direction?

 

for my build im personaly using haynes integra manuel and a how to build honda b series engine book i got at borders, for more in depth parts becasue its my first time .. the book is realy nice its by S.A design

 

i would go 85mm on the piston

 

What is your reasoning?

 

i def would NOT go 85mm on stock b20 sleeve's the walls are thin as it is any larger bore and they can/will crack stick to 84mm pistons

 

Just get some 11.5+ cr pistons to support the Pro2s if you're going to rebuild the bottom end. And get a good header as well like a Hytech or RMF header if you have the dough.

 

I already have a JDM ITR header. I plan on sticking with the stock bore if they are in round.