ok this is what i have a b18b ls bottom end stock with 120k i got a GSR head with 15000 on it complete with everything i have all the pumps and timing belt the p72 GSR ecu. the head has itr cams and cam gears on it .........let me know what u guys think about it let me know what else i can add to it to make it a good setup

 

i would save up another $300 and buy CTR pistons and new bearings and ARP rod bolts.

 

where can i get some arp rod bolts i am looking for some

keep the ideas comming

 

what are your goals for this motor first of all...but it sounds good from what you have?

heh get a skunk2 IM or a ITR one

 

lightningmotorsports.com

34.00$

get some stock pr3 pistons. that will up your compression to 11-3-1 which will be much nicer then over 12-1 with CTR pistons.

 

well my main is goal is buliding it right ive heard a lot about people just throwing **** on there and blowing there setup but for the motor i want to go all motor bc i want the sleeper look so i mean my plan is to build the setup the best i can

how much are the pr3s and where can i get them

 

vtec oil pump, water pump, ACL bearings, ARP ROD BOLTS, balance the bottom end, ARP ROD BOLTS, sturdy oil line kit from block to firewall, did i mention arp rod bolts?

 

im not 100% sure, but i dont think there is much valve clearence on a stock ls bottom end. might want to clay the motor for clearances before you bolt everything on and rev to 8k

talk to "omniman" about getting some extra info or him building up the motor for you

i think paul_vang has the required oil lines you would need to get too

 

Paul_vang also sells the dowel pins that require no maching of the head to install it and have the head sit properly. I used them on my motor and they were a nice fit.

also bob-dc2 is right on with the valve clearance issues, be sure to check that because i think that the b16 head on the stock b20 bottom end doesnt clear, but dont quote me on that. you will need to get some of the 81 mm vtec pistons, with the vtec valve relifs.

good luck!

-sander

 

the head was already sent to the machine shop for the dowel pins so i got that take care of and what all can i do about the clerance issue and let me know if thats gonna really be a problem or not this is the first ive heard about that and ive done some research on this lsvtec setup

keep it comming

 

as a matter of fact i take back my previous post, with a block that old i would go with an over sized piston. reason being that, pistons have thrust sides, and after time and wear they tend to oval, as do the sleeves some times in more extreme circumstances. going over bore is a nice way to make sure you have a new perfectly circular piston and a new perfectly circular cyl. wall.

an over sized p30 (JDM SiRII b16) piston with a nice fresh bore and hone on your walls would be nice. this would put you at about i think 11.6:1 ish not sure though.

EDIT: mabye at 11.9 with a gsr head...check http://www.cspeedracing.com and go to compression calc.

-sander

 

i have us itr pistons .25 oversize w/ gsr head and comp is 11.7...no valve to piston issues even with spec C cams w/ 3 degrees advanced on the intake cam. Rev 8.5 to 9.5 all day long...daily driver and weekend autoX.

Another suggestion, invest on aftermarket rods like eagle (but would need to use forged pistons, to much work mating it with CTR's or other oem cast pistons) so you can rev above 9K with no worries. I 2nd the balance and blueprinting along with ARP rod and head bolts.

 

ok this is my question im having everyone telling something different with the pistons im not planning to rev it to 8-9k all the time mainly only on the track so with is being my daily driver most of the time and with 120k on it what would be the best pistons for it

 

dude the pistons and compression doesnt necessarily have to do with revving, thats the bottom end, ie balancing, rods/bolts.

compression has to do with pinging and detonation, depending on where you are and what octane gas available, somewhere around 12:1 would be a decent set up for 91ish.

check out http://www.c-speedracing.com under the how to section for compressions. I would think that p30s would do the trick. hth

 

Just put some oversized ctr's in the motor. and if i were you i would just buy some rods, i recomend probes rods they are light as hell and they are stronger than the eagles. no you won't have a problem with the pistons tapping the head either, everyone who says you will just doesn't know how to build motors

 

stronger than eagles??? skeptical bout that one....