Kinda lost here guys, could use some help:

Ok, my '00 B16a2 has 54k on it (30k of so were boosted)

Just got done with my new tune and put down some great numbers for my uberdata set up. However i noticed quite a bit of smoke. didnt think much of it. noticed more and more smoke and oil loss over the week. So i checked things out, didnt have time to do all four cylinders but did Cyl #4 and it was reading at 160. this is obviously low. and im sure my rings are gone. Also, noticed today that on my Tial Waste gate, i have it open dump right in front of my engine block there is oil blown on the front of the block....which leads me to believe when the wastegate opens its just blowing the oily exhaust out.


now, at this point im ready to buy new pistons. I know i want to go with JE and i know that while im building for boost i might as well lower the compression. im aware that at the same boost level, a lower compression piston will yield lower results (which is compensatead by turning up the boost.) is this correct? Now, im not sure what size piston to get, i assume just a stock 81mm piston? and at what comp. ratio would the forum suggest?

secondly, if the ringlands are cracked and its not just the ring, how do i go about taking care of this matter, when i get the head off, what would qualify as a cylinder wall that needs attention? i guess what im saying is will i know right away if the walls are damaged or is a minor hair line scratch acceptable? so saying that the scratch is somewhat deep what are my options other than sleeving?

and finally (bear with my fella's) rods. Cost is an issue, yea yea i know while im in there i should replace the whole thing....however cost is an issue. are stock rods ok to use with the new pistons? i have a very good tune and im not concerned about my EGTs or AF.

thanks guys, all help is greatly appreciated.

-Tim

 

i would get some 81.5mm pistons. any company is good. just dont get the high siicon pistons like srp.
a lil over bore just to be safe.
as far as compression i would get some 9.1 for boost. which is like come flat top pistons.
make sure you dont get 9.1 cr pisto ns for a b18c thouse are like -9+ cc sish and would be about 7.x compression which i think would be to low
for rods just get some eagles since cost is an issue. they are good and are only $300
i would also buy a spare block and build it so you wont have down time. b16 blocks are only about $200

 

so you're saying go with an 81.5mm piston with a 9:1 compression ratio? a 9:1 B16 piston is NOT the same as a 9:1 B18c piston is it?

and the 81.5mm piston will fit in my stock cylinders correct?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr. Vapor &raquo;</TD></TR><TR><TD CLASS="quote">so you're saying go with an 81.5mm piston with a 9:1 compression ratio? a 9:1 B16 piston is NOT the same as a 9:1 B18c piston is it?

and the 81.5mm piston will fit in my stock cylinders correct?</TD></TR></TABLE>
stock bore is 81mm
so you take your block to a machine shor to get bored and honed and all the other little stuff
and yes a 9.1 cr in a b18s is less that 8.1 ina b16
for example a stock b16 compression iis 10.2 if you put thouse same pistons in a b18c1 gsr cr is be 11.5
piston dome, stroke , combustion chamber size, and deck height all play a role in the engines compression
you need to do a lot more homework before you do something like this