B20B Conversion Discussion

[techtic]

what is a oil squirel that they custom made it to the b20b block?

 

[shiroitenshi]

The 'oil squirter' is something that squirts oil into the back of the piston and the cylinder wall. Its also known as a piston sprayer. It functions to reduce friction and heat in the engine. All the B16 and B18 blocks has it as standard. The B20B doesn't have it as a standard feature, but it's do-able. However, running oil squirts reduces the maximum possible size of a B20B rebore.

 

[hattech-v]

max rebore for 2L for that still can go up to 85mm rite? enuf la tu... haha

 

[b-eater]

85mm still not enuf ahhh? woahh!
neway now i know what is the function of oil squiter !

 

[shiroitenshi]

like most people say.. no replacement for displacement... :P

 

[Kye]

b20 b .... anyone have changed to this block ? how's the feeling?

 

[hattech-v]

feel good..... :)

 

[b-eater]

i got no money to change la .. but ive try one of my fren b20b hermmm finger clicking good la, the torque is ewesome.

 

[hattech-v]

yes the torque is veli good....

 

[shiroitenshi]

feel good, but pocket feel painful...

very good bottom end torque for an average setup B20B.. so very nice to drive in traffic.

 

[hattech-v]

n drag oso... hehe
but must give hendikep to 1.6/1.8... haha

 

[b-eater]

no handicap pun hattech tapau kau kau ... how come?

 

[eddie_vtec]

hahahaha...thats true story....

 

[chris2000]

I actually seen quite a few B20B conversion and if "done properly" and "tune properly" should last a long time provided owner don't miss shift or rev over 8000rpm all the time. If daily driven to 7500rpm and occasional 8000rpm is ok with the right ECU tune.

If you wanna rev over 8000rpm consistently and reliabily then alot have to be done on the bottom end internals which include a minimum of forged pistons and lightweight rods with stronger head bolt and main studs. One more thing, alot of ECU tuning to run reliabily.

 

[002100]

Have anyone ever heard of a b20b conversion with an AT gearbox?

 

[bornzreign]

max rebore for 2L for that still can go up to 85mm rite? enuf la tu... haha

mie,
max rebore for 2L can go up to 86mm la..

 

[2899N16]

how many hp can go if with b16b head ,block b20 ?????

 

[orc3368]

how nice if the crank is also 86mm....

 

[hattech-v]

mie,
max rebore for 2L can go up to 86mm la..

i'm refering to eddie laa....
i know la u want to tell ppl here u using 86mm piston n running 12.8cr.. huh!

 

[chris2000]

86mm i think for street use with occasional rev or just drag race only should be able to tahan with a good ecu tune.

But i've heard track car with b20b with 86mm piston, just after two 10 lap race with consistent rev at 8200rpm the engine die just as he coming into pit. Later in workshop, they remove the cylinder head secured with ARP head bolts. As they remove the head, they saw the whole block cracked and split into 2!!

Lesson learned, stock sleeve with 86mm results in unreliable and cracked & spilt block with just one race weekend.