4wd eg6

can some one give me a full list of the parts that i need for a b20vtec n/a swap that i want for my civic. i have the gsr head and type r cams but i need a list of the other parts that i need, or will be better if i sold my gsr head and just get a complete type r head with intake and tb on it cuz my friend has one for $1000 bucks but i dont know if will be good swap or the gsr head will be better. please guys let me know everything that i need to know about this swap and what parts i need. thanks.

mrharmonic

ok bro its not cheep building a b20v especialy done right and your to vegue first ill sleve it with a bore of 84.5 or f it 85mm bore pistons rods berrings micropolish the crank if possible and balance it. and new arp hean bolts for the head keep the gsr get rid of the itr cam's go skunk 2 stage 2/3 street if dd springs retainers flat bottem valaves valve guids mine as well repace the valave seals. cam gears sunk2 intake mani with 70mm throttlebody 750 rc injectors new walbro 255 fuel pump fuel rail opt. headers. thats pertty much how my b20 is built lol and a good tuning bro way over the 230 mark on pump gas

MonkeyMagic

google can tell you everything.

or the faq on here.

point is.. search. its not the first one and i doubt anyone will take the time to type up that much

4wd eg6

i want to know the right parts cuz every thread has different parts on it.

00EckoSI

dont build a b20..they arent reliable the motor wasnt designed for high rpms you'll have to rebuild in 20-50k miles i would rather put the money into an 18 and have it last

mrharmonic

not true its upon how you first build and if you cut corners i have had a b20v full track potential and still a daily drivein it was built right and tuned right the motor will last you a very long time and be very reliable with great power and anything can be reved the **** out of if you build it btw. its called a gurdel.

00EckoSI

i know what its called and they will only last so long you cant build something and expect it to do something it wasnt ment to do...you can get more power and reliability for a little more money out of an 18 and have it rev higher with out block distortion

hmoobhero

block distortion??? what are you talking bout? everyone knows...well not everyone...that its the rod bolts that cant handle the high revs. b20 and b18a/b arent meant to rev past 7k rpm. but if you replace them with arp rod bolts you can rev it as high as you want. some people think that you can do ls/v without replacing the rod bolts and rev it to 8k. yes you can but it wont last.

to the op, read this:

https://honda-tech.com/forums/all-motor-naturally-aspirated-44/how-build-%22reliable%22-lsvtec-b20vtec-1676914/

98y8

damn i was just about to post that link for that thread lol. and b20v is reliable. a majority of it is how its tuned. if its not tuned correctly, itll run like ****/blow up. and op you dont HAVE to sleeve the block. you can pick up a block girdle for it and it should be enough. or you can just leave it stock.

93egSLEEPER

my vote is you failed 2 times in this thread already so stop talking. HT sucks cause of this stuff now.

OP the best way to build a RELIABLE b20v and get good power is going to take alot of time and money. you dont HAVE to sleeve it, or bore it any larger then stock. unless you plan on racing alot i dont really think its worth it.

82mm stock sleeved b20 block w/ a set of arp rod bolts and a balanced crank will hold togeter just fine for a DD/every once in awhile track car. added insurance would be a set of h-beams and forged pistons. dont forget the headstuds. I personally would not look for any compression ratio above 12:1 for pump gas. all honda parts would suffice you a great build if its done right and be cheaper.

4wd eg6

thank you everyone. i know b20vtec wont long 2 much but i only drive the civic like 2.000 miles a year and i dont have a b20 i have a b20z2 witch i get for the torque that u can get from it. and i dont really care if it last 15.000 miles, i think for me is better wining with a n/a car than be worry about the mileage. i love the torque on the b20z cuz i can use the torque with the AWD on my civic and launch at 5.500 rpm's without spining. that why i want more torque building a b20vtec.

00EckoSI

[QUOTE=93egSLEEPER;41244160]my vote is you failed 2 times in this thread already so stop talking. HT sucks cause of this stuff now.

then leave...

u show me 10 b20vtecs that have been built right and lasted over 100K..u wont find one they fail with ben rods or throwing rods through the block..yeh ur right its all about the tune..but when heat gets to the block it distorts it and thats how the rod gets thrown through the block...

hmoobhero

[QUOTE=00EckoSI;41251969]dude, when people build b20v, its for racing. when you beat on an engine anything can go wrong, no matter how well it is built. plus, ls/vtec and b20vtec are pretty much the same. a b20 motor is a ls motor with a bigger bore, for more torque, thats it. so why build a ls/v when you can go with a b20v with more torque.

yes, rods can break thru the block. but it could be for many reasons. oil starvation, revving too high, etc... and any motor can do this, not just the b20v. my friends stock sohc vtec motor did this because he got a chipped ecu and thought he could redline at 9k rpm.

mrharmonic

ther out ther you just might have had a bad exp with a b20 why dont you build one and find out for your self and stop bad mmouthing them. and you'll even be suprised with theend resualts

pschiller

i like turtles.

00EckoSI

[QUOTE=hmoobhero;41269991]
i understand this bro but what im saying is that the b20 wasnt designed for high rev,u can try and build the block as bullet proof as you want and its still not doing what it was designed for..for as much money as he would spend in theroy to build the b20 twice if it blows up he could build a b18..u can find b18c's in junk yards in perfect running order for l ike 300 bucks for the motor..all im trying to say is do a little research and get the best for bang for the money your trying to spend..in the end he is going to do what he wants anyway im just putting in my .02

00EckoSI

i dont want to waste my money...i dont k now what happened to you but look at your sig "blown b20v but rebuilding" like i said i dont know what happened so im not gonna judge but there it is fully built and blown..yes it can happen to any motor i know this but i see more posts for blown b20's than b18's or 16's..IMO they arent reliable

jhammond_82

iTrader: (1)

i'm still trying to figure out why its not "cheap" to do. ls/b20/vtec isn't all that expensive. its cheaper than a gsr swap. arp rod bolts, gsr water pump, gsr head gasket, gsr timing belt. whats so expensive about that? whoever said its not reliable is a moron. the only thing not reliable is the rod bolts. looks like a few people in here need to use the search option, or look through the faq's.

here, i did the easy part for you.
---Engine, LS/VTEC and CRVTEC---
https://honda-tech.com/forums/acura-integra-6/ls-vtec-hp-2207108/ - Good LS/VTEC discussion
https://honda-tech.com/zerothread?id=1676914 - LSVTEC Build (THANKS MADNESS)
https://honda-tech.com/zerothread?id=1812388 - LSVTEC Build price list (THANKS MADNESS)
https://honda-tech.com/zerothread?id=1119323 – A Few Good Links
https://honda-tech.com/zerothread?id=1082172 – A Few More Good Links
https://honda-tech.com/zerothread?id=1083788 – Break-In Period
https://honda-tech.com/zerothread?id=501372 – Reliability Issues
https://honda-tech.com/zerothread?id=720621 – Quarter Mile Times
https://honda-tech.com/zerothread?id=805408 – Using LS ECU
https://honda-tech.com/zerothread?id=1467903 - B20 NonVtec FAQ - (THANKS DRINTEGRA & BAMBAM)
https://honda-tech.com/zerothread/1767009 - B18C1 vs B16A Head flow chart (THANKS dohcMONSTER)

jhammond_82

iTrader: (1)

oh, and save yourself the money and just buy some type r valve springs if your worried about high rpms. a gsr is good to 82, type r a little more. i'd say gsr is fine. its done everyday on ht.

pettyboy69

iTrader: (2)

wtf? why do you have 750cc injectors with a high compression motor? you only need like 450cc?

Koopa Troopa

Because running WOT at 30% duty cycle is all the rage these days

Funny, I could have sworn there's a few Formula 2000 cars running around with a B20...




Here's one... I'm sure I could find more...

Jimster480

rofl 750cc injectors on a NA Honda. You could use 390 or 450CC and that would be PLENTY. I have 450 and im making 300+ HP. A b20 VTEC isnt goign to see this unless its a race motor. And you dont need to sleeve it for NA or increase the bore.

Ferdy_GAT

yeah...dont forget about forged conrod n block guard to 9k rpm...big torque n high rpm...my injector just 270cc with walbro fuel pump can be 230hp on my civic...correct me if my languange so bad