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View Full Version : Power Mods b20 vtec



blackhatch99
04-03-2008, 11:30 PM
how reliable are b20 vtec and is there any real problems with them

also if u rebuild it for race then is it good or bad













thanks

SiRed94
04-03-2008, 11:53 PM
it is as reliable as you build and drive it...

Barefoot
04-14-2008, 10:29 AM
it is as reliable as you build and drive it...
thats it in a nut shell. u drop in a stock b20 vtec and rev the piss out of it good luck. build it a lil before u drop it in or dont get all vtec crazy and u stand a good chance of having a reliable motor.

Just_CHill
04-14-2008, 01:14 PM
The only bad thing I've heard about building a B20/VTEC for high performance is that they have thin sleeves.

Mr2raceworks
04-21-2008, 12:57 AM
b20/vtec, and ls/vtec can be reliable.

i have heard so many retarded people say they have to many problems. They have problems cause the people who built them, don't know what they are doing.

just do it right. and you won't have an issue

arteg6
05-02-2008, 10:10 PM
yep he says it all..........................:goodjob:

ATLem1
05-07-2008, 03:46 PM
b20/vtec, and ls/vtec can be reliable.

i have heard so many retarded people say they have to many problems. They have problems cause the people who built them, don't know what they are doing.

just do it right. and you won't have an issue

exactly.. my personl experience: 5 years, about 50k, great power, 30mpg, never had to open it. leaks nothing.
its all in how you put it together. do it right, do it once.

Code-Aye
05-07-2008, 10:42 PM
exactly.. my personl experience: 5 years, about 50k, great power, 30mpg, never had to open it. leaks nothing.
its all in how you put it together. do it right, do it once.


x2 thats what im gunna do if i get a b20/vtec:bump:

Grimm Reeper
05-12-2008, 01:23 AM
:goodjob:

Gilgamesh
05-24-2008, 02:57 PM
yup keep the cost down and the mods mild and your wallet wont be exhausted

JDMB20
05-24-2008, 05:29 PM
ummm. ya i alreadybuilt it and found out all the info i need i broke 203 to thw wheel and not done till i have 220-50 all motor and tryin not to spray but i might have to

greasemunkey
06-01-2008, 11:59 PM
be careful hitting vtec all the time, those rod bearings don't hold up too well in high rpms, had it happen to me w/o vtec. people said it would handle 7k all day and I never brought it past 6500rpms but developed a rod knock anyway with black and blue bearings

killer B
06-02-2008, 01:23 AM
i have a friend doing a B20VTEC swap now. i chose not to do the head swap and did a 75 shot. head was remilled and ported w/ a 5angle valve job. Crower 404-2 cams, ARP head studs. i made 203 / 197 @ the wheels. 156 / 148 NA. (that was stock injectors, and pump gas. i've got RC330ccs' now and 106 octane to mix on the next tune) my friend is wanting 180ish+ whp. *shrugs* we'll see.

Vteckidd
06-03-2008, 11:13 AM
be careful hitting vtec all the time, those rod bearings don't hold up too well in high rpms, had it happen to me w/o vtec. people said it would handle 7k all day and I never brought it past 6500rpms but developed a rod knock anyway with black and blue bearings
That has nothing to do with VTEC or RPM.

I revved my stock GSR block to 9900rpms for oh i dont know, about a year. then i sold it, then someone else drove it for about a year before the oil pump failed.

If your motor rod knocked it was because of an oil pressure failure or an incorrect bearing size

DC2NR
06-03-2008, 08:18 PM
be careful hitting vtec all the time, those rod bearings don't hold up too well in high rpms, had it happen to me w/o vtec. people said it would handle 7k all day and I never brought it past 6500rpms but developed a rod knock anyway with black and blue bearings

We found out that the problem was that someone had switched the #1 and #4 bearings in the block. The #4 bearing was too lose which caused it to spin, and the #1 bearing was too tight in which the crank and rod ate it up. So we'll have to go with a new crank and rods.