Yuu will need strong rods, a high comp piston, worthy cams to supply enough air and fuel
20+ years of experience and you think the OEM rods aren't up to the task of a measly 215whp? And last time i checked cams didn't provide fuel...
ok guys one of my friends selling me some itr double spring and itr valves with titanium retainers and ctr camshafts. would that be a good set up for my b20vtec with gsr head? or should i just get some aftermarket valve train? has anyone try to do this set up ?
manoloek9, theres a sticky in this section about B20 Vtec...have you read it?
Blinx, Daz...Peace! Both of you are right and have solid arguments...PEACE!!
Build it right, build it once Sir, the rods can take the power, but you need to rev it to make the power and the stock rods dont like revs. And lets face it why would you go the effort of fitting new pistons, balancing the crank, fitting new shells and not replace the rods
Also Im pretty sure that i mention Injectors. But just to clarify something for you as you seem to be in the mood for taking a jib.
The air AND FUEL enter the combustion chamber through the valves, the valves are opened by the CAMS, the longer there open the more air and fuel mix enters the engine.
There was nothing wrong with my post at all that needed altering.
Factory rods can easily handle revs, at least 8000rpm on a b20, i have never seen a rod failure from a naturally aspirated b series.
build it right? simple:
-84mm nippon ITR spec pistons $200 (about 11.8:1)
-factory rods and crank $free
-ACL bearings/thrust washers $130
-hone,balance, assembly, blueprint, etc... $price varies based on area but about $1000 where i live
That's 1 b20 shortblock built right for a scant $1330 and more than capable of 215whp and 8500rpm. 215whp is not that much, people get so carried away and overbuild and waste money. There is no need for forged pistons/rods.
The problem of factory rods is not strength, they are forged, the issue of the b20 bottom end is that its not properly balanced to handle high revs which can be resolved with a competent engine builder.
Don't get me wrong, your way is not the wrong way, its just the more expensive way, if the setup i suggest and the setup you suggest were put to the test of longevity i promise you the one built by a competent engine builder would last longer, has nothing to do with forged pistons or upgraded rods, not at that power level at least.
...And sorry for earlier, my tone was rude, i should not have spoken to you in that way.