will a valve from a 91 LS head fit in my b20z2 head? the exhaust valve has a hole in my b20 and i have an ls head in my garage. thanks in advance

 

Im pretty sure they are the same. You can get a brand new valve for $15-$25 I would replace them all if you have a b20 head Depending on your funds. I know my b20z when I got it had the sunken valve problem. I just put a older ls head on.

 

what is the "sunken valve problem" ?

 

I dont rly wanna put an ls head on it, i mean, i wanna keep the b20 head idk why, but how positive are you that the valves are the same?

 

im almost certain that the b20 head and the ls head are exactly the same. someone correct me if i am wrong.

 

check the stamp on the head. if its p75 then yes, same head cast as an ls, if its pr8 then no, they have bigger valves

 

p75 head.

 

interchangeable valves then

 

thanks man

 

do you have a b20b or a b20z? If you have a b20b putting the ls head on their would give you more power haha

 

my engine is B20Z2. so thats why i thought LSA valves wouldnt work.

 

b20z2 all the way! Now have built head with crower 402 arp studs. Block guard top mount. Will be fun this spring.

 

what transmission are you running?

 

dont have one yet

 

I got a rebuilt B20b head for sale.

 

I had a 99 EX auto V and now I have a 99 EX 5 speed. I've never had a problem with my current eventho i've only had it a short time. My previous has gone 90k miles (my ex still drives it) without a valve adjustment.

That being said, a lot of people on the CRV-OC say that the V (and consequently the B20 motors) should have a valve adjustment much more often than the listed interval in the manual because the valves "tighten" on the B20 head and receed. I can't substantiate the claims with evidence but others seem to have had this problem semi commonly, maybe i'm just lucky.