u am curious i am fixing to build a motor from ground up...i am wondering what is the best bottom end....I have a b16 head and tranny...i was told the b20 bottom end is only capable of being reved to 6500 rpms....i want to build a b20/vtec but i want to get some research before i go buying parts....pros and cons for b16, b18, and b20 please

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cbabyby &raquo;</TD></TR><TR><TD CLASS="quote">u am curious i am fixing to build a motor from ground up...i am wondering what is the best bottom end....I have a b16 head and tranny...i was told the b20 bottom end is only capable of being reved to 6500 rpms....i want to build a b20/vtec but i want to get some research before i go buying parts....pros and cons for b16, b18, and b20 please</TD></TR></TABLE>

Whoever told you that a B20 can only rev to 6500 RPM's should be double back hand slapped. IF built them right they can rev 10,000 RPM+ but they can rev 9000 RPM+ all day. All the B series engines are good, it really depends on what you plan on doing with it and your budget.

 

A stock B20 bottom end won't be doing 9K all day, not that you're going to make power up there anyway. Obviously if you're all motor and trying to make power you want the biggest bore so an LS or B20 block is going to be your choice. B20's have weaker sleeves but probably won't be an issue all motor. I would say weakest point in the bottom end is the rod bolts so you can start there...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nonvtecD &raquo;</TD></TR><TR><TD CLASS="quote">A stock B20 bottom end won't be doing 9K all day, not that you're going to make power up there anyway. Obviously if you're all motor and trying to make power you want the biggest bore so an LS or B20 block is going to be your choice. B20's have weaker sleeves but probably won't be an issue all motor. I would say weakest point in the bottom end is the rod bolts so you can start there...</TD></TR></TABLE>

If you read what I wrote I said "IF you built them right they can rev 10,000 RPM+ but they can rev 9000 RPM+ all day". I didn't say stock and if you can't build a motor that won't make power past 9000 RPM's you have issues!!!

 

i plan on building a street/strip...b20 vtec my budget is the biggest bang for my buck....i dont plan on turbo/supercharging it but who knows?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PHDZINE &raquo;</TD></TR><TR><TD CLASS="quote">If you read what I wrote I said "IF you built them right they can rev 10,000 RPM+ but they can rev 9000 RPM+ all day". I didn't say stock and if you can't build a motor that won't make power past 9000 RPM's you have issues!!! </TD></TR></TABLE>

Rarely do motors make power far past 9K. A good powerband is more important than peak power, but I understand what you're saying

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nonvtecD &raquo;</TD></TR><TR><TD CLASS="quote">

Rarely do motors make power far past 9K. A good powerband is more important than peak power, but I understand what you're saying </TD></TR></TABLE>

thank you

 

The best b-series bottom end is a b18c block a LS crank and ls rods, (steel, manley, and aluminum, groden) golden eagle block, stock well balanced crank and a good set of pistons, I build that setup for alot of people with no problems, We have made 975hp at 9500 rpms at the front wheels, That is with our heads of course, On our car that motor makes power to 11,k rpm's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alternativechuck &raquo;</TD></TR><TR><TD CLASS="quote">The best b-series bottom end is a b18c block a LS crank and ls rods, (steel, manley, and aluminum, groden) golden eagle block, stock well balanced crank and a good set of pistons, I build that setup for alot of people with no problems, We have made 975hp at 9500 rpms at the front wheels, That is with our heads of course, On our car that motor makes power to 11,k rpm's </TD></TR></TABLE>

Show me the 975 hp dyno with 11K redline.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alternativechuck &raquo;</TD></TR><TR><TD CLASS="quote">The best b-series bottom end is a b18c block a LS crank and ls rods, (steel, manley, and aluminum, groden) golden eagle block, stock well balanced crank and a good set of pistons, I build that setup for alot of people with no problems, We have made 975hp at 9500 rpms at the front wheels, That is with our heads of course, On our car that motor makes power to 11,k rpm's </TD></TR></TABLE>

Hey Chuck...why don't you tell the truth about your 1100WHP...stop holding back. LOL<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nonvtecD &raquo;</TD></TR><TR><TD CLASS="quote">

Show me the 975 hp dyno with 11K redline. </TD></TR></TABLE>
I don't think you should ask one of the fastest HodRod honda's to show you a 975hp dyno graph!!! Come on now...170+ MPH and low 8 second passes...good job Chuck

 

The original poster is building a street car...

 

to the op........ b18c?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nonvtecD &raquo;</TD></TR><TR><TD CLASS="quote">The original poster is building a street car...</TD></TR></TABLE>
...AND!!! Your point is...!!!

 

what sort of times are you shooting for? if you just want 12s
look on the ls turbo thread. that is going to be the best bang for your buck.
but if you want to run 9s talk to alternative chuck he hays a pretty good plan for that already.

 

i was shooting for around 12s but good enough to be a daily driver...budget is a little slim right now but maybe one day a turbo or supercharger...i just want to be able to get the most out of my motor first....then woory about super/turbo charging later

 

Honestly, it's kind of one or the other. If you were to build an all out N/A motor, a lot of things are not going to mesh well with forced induction, which would then be wasted money. I'm not saying you can't go n/a and then switch to F/I, but don't go spend $700 on a header and then need a turbo manifold .

 

i would prefer an N/A motor because there would be less stuff to go wrong, but i will go the easiest route...