1) I have been doing a little searching and researching and have come to a problem. people are saying that lsvtec and crvtec arent reliable and such. i even read that when built right you should only go up to about 7600 rpms with lsvtec. It stated that the ls is unstable at high rpms.

2) At the time now I have a b16 so i figuered more displacement would give me more power but the way honda motors are built correct me if i am wrong they make power through reving high. So if thats the case then going lsvtec would not be wise being i can only go to 7600 when a stock b16 wil go to 8200.

3) Ok for the same price that it would take for me to build my b20 or ls couldnt i get pistons and rods for my b16. like 84 mm or 84.5 and get the motor sleeved and a girdle.

4) Also isnt the r/s ratio of a b16 1.74:1 pretty good and lsvtec bad 1.54:1

I am trying to find info and facts not opinions on both the setups. I want to stay all motor and squeeze and use as a drag/ daily driver. Turbo is not an option. been there blown that. i am not going for whats the cheaper but of course not the most expensive i just want whats going to be more reliable and cost efficient.

 

Build what you want.....IMO....if you want a good street motor, build the biggest one you can within your budget. For daily freeway driving I use the B16 since its R/S ratio is better suited for longevity and higher and extended revving capability. It is true that higher piston speeds arent good when dealing with longer strokes and shorter rods(like the B18 has), but you will have a broader power band for street action. If you want top end charge and more revving, then you run a big bore and a shorter stroke setup.
People will argue about the longevity of a B20VTec and a B18VTec, but that arguement all stems from too many variables like: parts used, who built it, was the motor beat on etc.....

 

ok well if i were to go b20 os lsvtec i would rather take the time to build it correctly than to rush and put some **** together

 

So you are suggesting go with the pistons and keep the b16

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kaoss_11 &raquo;</TD></TR><TR><TD CLASS="quote">ok well if i were to go b20 os lsvtec i would rather take the time to build it correctly than to rush and put some **** together</TD></TR></TABLE>

what are you intentions with your car? daily driven on freeway or street driving only? You are correct, only way to do it, is to do it right. Take your time and buy quality parts, also assemble it correctly.

 

street driving mainly but i got to take the freeway to get to the track

 

I'd build a B20 VTec then......i like my B16 because i drive 80 miles one way to work everyday, so i dont want a long stroke motor revving for an hour on the freeway.

 

I understand that the VTEC blocks are different than non-VTEC, probably in how they are reinforced. Another thing to look at is your gearing. In my CRX, the gearing is pretty short which matches the B16 well.

 

I rev'ed my LS/VTEC to 8200 about every day, and I plan to again once I come home. Stock bottom end, stock rod bolts. I don't see how you have 1300 HT posts and youre still asking the most typical lame questions about LS/VTECS. Do more research. Do you want us to give you a pat on the back for stating the obvious numbers? Build what you want. Talk to people with LS/VTECS. If you could have a built b16 or a stock LS/VTEC I'm not sure why you would ever choose the LS/VTEC, however for me it was a money issue. I built mine for about a grand and it puts down more power and torque than a c5.

 

yeah thats true. my thinking it will cost like 1200 to build a b20vtec i dont know if thats a good estimate or what but i know i can get eagle rods for like 300 and pistons like 350 bearings and etc. I think it would maybe be cheaper to build the b16 but the gains wont be even close to a b20vtec or will they? And will 84 mm pistons make that muchof a diffrence and i know i have to get my motor machined

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Reelizmpro &raquo;</TD></TR><TR><TD CLASS="quote">I understand that the VTEC blocks are different than non-VTEC, probably in how they are reinforced. Another thing to look at is your gearing. In my CRX, the gearing is pretty short which matches the B16 well. </TD></TR></TABLE>

blocks themselves arent really that different...one has more oiling orifices than the other, but thats about it. That is the whole reason the VTec motor is low geared, to take advantage of the higher revving powerband.

 

Thats why I am asking cause I am trying to talk to people that have a lsvtec setup. i am not asking typical questions I need a better understanding. Now I know what i am probably going to do. All i wanted was opinions and facts. A fact is you rev your motor to 8200 on stock everything but how long have you been doing that and will you rmotor last tomorow

 

For one.....you dont need Eagle rods, that is just a waste of money and over kill for a street machine. Two, get rotating assembly high speed balanced with new higher compression pistons. main ingredients are: ARP rod bolts, ARP main studs, good bearings and high speed balancing. All other parts to use are known already.

 

ok thanks for the info