just got my car ..........................now what?
the fool
03-13-2003, 08:05 AM
i just got a 94 civic hb with an ls motor (not the ls/vtec swap mind you) already dropped into it for 2k flat. i want to go way of the ls/vtec but i dont where to start in terms of ensuring the head fits perfectly onto the block. i plan to go turbo in the future (TS04 + fully built bottom end) also some other Q's have been plagueing my mind lately....
what head should i go with?
what machine work needs to be done?
are high rev's a fast way to shorter motor lifespan?
any other general info i should know would be greatly accepted:D
what head should i go with?
what machine work needs to be done?
are high rev's a fast way to shorter motor lifespan?
any other general info i should know would be greatly accepted:D
k_dog
03-13-2003, 10:28 AM
In regards to the lifespan of the car, if you like to redline your car alot, it wont last long.
Brian
Brian
platinum92civic
03-13-2003, 11:17 AM
A buddy in my crew just bought a 94 red hatch with a ls motor in it and yeah that thing hauls ass......but if u want high revs ya better buy some skunk 2 or mugen or crower valve springs so your engines lifespan will last longer nah mean.......... just upgrade a few internals and get the programmed ecu chip and your straight!! And oh my friend ran a 15.0 as best time with just an intake!!
funkdaflex1
03-13-2003, 05:19 PM
yeah to increase the life of ur motor u definatly need new valve springs and retainters but if u want a new head for the engine why not order a new one from a company such as gude or whatever u prefer have them port and polish it and build the head and then slap it on. its quite costly but from what i understand and can be wrong somebody please correct me if i am that u can gain about 50hp to the wheels just from a port and polish on the high end.
edman24
03-13-2003, 05:58 PM
do you guys actually think the valve train is what limits the ls/vtec from revving high for a long period of time? man do some studying. you cant rev the ls/vtec that high because it has no piston squirters to cool down the pistons. this means your block could get very hot and either melt your rings or have your whole bottom end turn into one solid block of metal. there is no cure for making it rev like a b16. it just doesnt work. but if you want to slap on a head and a turbo then dont worry about revving high, its not where you get your power from. the ls/vtec engine makes power at low rpm's more then high up and you wont need to cross 8k rpm's anyways so why bother? also turbos dont like high rpm's either because they can become unstable with all that flow depending on the turbo. look, youre goin to need forged pistons that will keep the low compression and forged rods. then get a b16 head (they flow a little better then b18 heads) and do the ls/vtec conversion. after that is done slap on your turbo and you could run 9-10psi safely with no other mods. after that youll need fuel and ignition upgrades. just tell me if you want to know what to do there too.
new valve springs and cams will not be good on a turbo motor either. just to correct you guys aftermarket springs dont last anywhere near as long as stock springs do and you dont want overlap when turbocharging so dont get new cams either. a port and polish might help a little but again it will definitely not net 50hp at the wheels for a honda. and again
NOTHING WILL MAKE THE LS BLOCK REV HIGHER THEN 8500 WITHOUT DESTROYING IT!!!
new valve springs and cams will not be good on a turbo motor either. just to correct you guys aftermarket springs dont last anywhere near as long as stock springs do and you dont want overlap when turbocharging so dont get new cams either. a port and polish might help a little but again it will definitely not net 50hp at the wheels for a honda. and again
NOTHING WILL MAKE THE LS BLOCK REV HIGHER THEN 8500 WITHOUT DESTROYING IT!!!
funkdaflex1
03-13-2003, 06:16 PM
yeeah i disagree with edman with not getting cams and all. cams help and cams help alot with dohc engines and same with camshafts. first yes valve springs dont last as long as stock. fact. and aftermarket springs have a life expectency of about 3 years give or take. now more rev on the springs the more the stretch and stretch out which can be done very easily and by accident by downshifting. Now if you stretch those springs ur car is gunna be in the shop and will cost you 1500$ my dads a honda tech. ok a camshaft really helps with turbo and vtec there are different stages of camshafts stage 1-3 to turbo aplications. cam gears are worth it to becuase u can tune your intake and your exhaust timeing if u get it right u will be happy with the results i know i am. And edman turbo's usually dont spool up until higher rpm's and i dont even think the motor revs any higher than like 7000rpm my friend has a lsnonvtec and the only way its gunna rev that high is with a new or reprogrammed ecu.
k_dog
03-13-2003, 06:33 PM
If you get camshafts...most likely they will be lightened and prety much give faster revs.....
Brian
Brian
edman24
03-13-2003, 09:53 PM
ok the only cams you could use in a turbo motor are the ones designated as "turbo" cams. but why waste your money? stock cams will do the job just fine. cam gears could be useful too. and i know turbos dont spool till higher revs. did i say they didnt? i said if you go too high they become unstable. and also your friends ls non vtec only goes to 7k because of the programming. honda designed the ls ecu's to only rev that high because they were focusing the power on low end torque. now with a vtec head and vtec ecu you could get the block to 8200 safely but not past that. and about lighter cams, because theyre aftermarket doesnt necessarily mean they are lighter unless you get hollow cams and even then it wont make a noticeable difference in acceleration as far as getting the revs up faster. it may give you a few extra hp but because you lightened the valvetrain that small amount doesnt mean it will affect it noticeably.
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