The B20VTEC discussion thread

**Chr1s** · 02-04-2010 09:06 PM

To mill the head you don't need to take the pistons out or even touch the block for that matter, thats why it's a cheaper way to raise compression than buying new pistons.

I'd rather spend the money and just buy new pistons than milling the head to it's minimum service limit. What if you need to do it again later?

If you replace pistons, you need to do the necessary prep work ie honing, etc. If you re-ring the motor, same thing. But why put stock pistons back in for?...

**Lerlo** · 02-04-2010 09:53 PM

Originally Posted by Chr1s

To mill the head you don't need to take the pistons out or even touch the block for that matter, thats why it's a cheaper way to raise compression than buying new pistons.

I'd rather spend the money and just buy new pistons than milling the head to it's minimum service limit. What if you need to do it again later?

If you replace pistons, you need to do the necessary prep work ie honing, etc. If you re-ring the motor, same thing. But why put stock pistons back in for?...

Ooh, i see... Ive already removed everything from the block. Am gonna be changing bearings and rings.
Was thinking of changing pistons as well, but Im not aiming for high compression. Something between 10.5-11 I reckon. I just thought its a waste of money to get after-market pistons for just .5 CR increase.
But considering the cost of milling and enlarging the valve clearence holes (Not sure what its called), maybe its a better idea to just get pistons afterall...

**MikeyG** · 02-04-2010 11:25 PM

Are you hard out build? Or something more zippy for street and track

**Lerlo** · 03-04-2010 12:03 AM

Originally Posted by MikeyG

Are you hard out build? Or something more zippy for street and track

Something more zippy for track actually and daily. Just sick of the lack of torque on a b16.
I heard running a CR over 11 is tougher on the sleeves which arent already very strong.

**MikeyG** · 03-04-2010 03:17 AM

it can hold but what you should do is put a slapper together first and see how you like it then go from there.

tinkerbell always has the answers

only person who has had the longest b20 both track and daily

**Chr1s** · 03-04-2010 01:34 PM

B20's will take 11-12:1 CR with no problems....

Enough with the sleeve bullshit.

**ZeForce** · 03-04-2010 02:06 PM

Originally Posted by Chr1s

B20's will take 11-12:1 CR with no problems....

Enough with the sleeve bullshit.

I second this....

**MikeyG** · 05-04-2010 03:24 AM

i want to ask the a totally different question.

for the b20vtec obv you either going to use b16a box or integ vtir box or type r, i wonder why the guys in the states use LS 5th gear? to stay in 5th longer?

**tinkerbell** · 05-04-2010 08:14 AM

reduce rpm when driving on their freeways...

**tinkerbell** · 05-04-2010 08:38 AM

Originally Posted by Lerlo

Ooh, i see... Ive already removed everything from the block. Am gonna be changing bearings and rings.

why????? was the engine damaged?

Was thinking of changing pistons as well, but Im not aiming for high compression. Something between 10.5-11 I reckon. I just thought its a waste of money to get after-market pistons for just .5 CR increase.

yeah, there are cheaper ways to increase compression by 0.5 tahn new pistons

But considering the cost of milling and enlarging the valve clearence holes (Not sure what its called), maybe its a better idea to just get pistons afterall...

milling head = $60
fly-cut valve reliefs x 8 = $80ish (haven't paid to have this done since 2003 - that is what it cost me then)

BUT - you really should be doing a "Full head service" including new valve stem seals and maybe a multi-angle valve seat job...