ikay im building an lsvtec and im wonderiong what pistons should i run i have stock cams for now but i want to upgrade to some big cams in the near future i was planning on running pr3 pistons but i am considering going with ctrs my questions is should i wait until i get cams to go witht the ctrs and stick with pr3s now also i was thinking about maybe just running pr3 and milling the head .30 im also wondiring the estimated power output with each psiton on this build taking into consideritation that it will be tuned properly


specs
b18a1 block
b16a pr3 head (stock cams for now
82mm pr3 pistons or 82mm ctr pistons
balanced crank
balanced rods
micropolished crank
arp rod bolts
arp head studs
aem power pullies
skunk 2 intake manifold port matched to throttle body
jg 66-64 mm tapered throttle body
password jdm carbon fiber js racing style intake
dc sports 4-1 ceramic header 2.5inch collector
2.5 inch tsudo catback exhaust
aem 5 bolt cam gears
str fuel rail
b&m fuel pressure regulator
im tuning with uberdata

 

i suggest going pr3 or p30's. i dont think your'e going to want to rip apart your block twice, re-hone, reseat rings,etc. after you just put new pistons in. if you can get some cams to match the ctr's, do it. if not just mil the head or use a thinner head gasket and go with b16 pistons.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by butters &raquo;</TD></TR><TR><TD CLASS="quote">i suggest going pr3 or p30's. i dont think your'e going to want to rip apart your block twice, re-hone, reseat rings,etc. after you just put new pistons in. if you can get some cams to match the ctr's, do it. if not just mil the head or use a thinner head gasket and go with b16 pistons. </TD></TR></TABLE>

thanks thats kind of what im leaning towards now to do you happen to have the link to the c speed i belive it is compression calculator

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LG_R32 &raquo;</TD></TR><TR><TD CLASS="quote">thanks thats kind of what im leaning towards now to do you happen to have the link to the c speed i belive it is compression calculator </TD></TR></TABLE>

http://www.c-speedracing.com/h...c.php

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by butters &raquo;</TD></TR><TR><TD CLASS="quote">

http://www.c-speedracing.com/h...c.php </TD></TR></TABLE> I wouldnt trust the C-speed calculator to much as it shows up top that with the CTR's it wasnt to accurate. I dont think you can get PR3's or PCt pistons in 82mm i think the largest they go is 81.5mm. I say you should go with the PR3 or p30's if possible. Those pistons would yeild the most useable compression on pump. And if you want more compression use a thinnner head gasket...atleast when you use a thinner head gasket you can go back to stock if you wish but not when milling the head.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drchulo &raquo;</TD></TR><TR><TD CLASS="quote"> I wouldnt trust the C-speed calculator to much as it shows up top that with the CTR's it wasnt to accurate. I dont think you can get PR3's or PCt pistons in 82mm i think the largest they go is 81.5mm. I say you should go with the PR3 or p30's if possible. Those pistons would yeild the most useable compression on pump. And if you want more compression use a thinnner head gasket...atleast when you use a thinner head gasket you can go back to stock if you wish but not when milling the head.
</TD></TR></TABLE>


i can get pr3 in 82mm well they are not genuine honda they are an exact copy made by nippon i belive

 

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