suno

I'm about to start an engine build and thinking about going the LS-Vtec route. Call me ricer and gay or w.e but the only reason I want to do this is because I think the B18b valve covers are ugly as ****! Having a B16 valve cover would be way nicer.....Yes I am picky.

So..would an ls-vtec turbo be reliable with a good tune? Anyone have some sort of experience?

Hanmin

Wouldnt a heavily modded valve cover be cheaper, and less work? or a b16 swap?
Yes, but high rpms is not recommended, keep the stock rev limit unless your gunna build your bottom to be able to handle the higher revs.

boostin350z

i just drove a buddies hatch with ls vtec, and it moved being all motor. vtec changover was very aggressive. however another buddy of mine tells me that ls vtec's usually arent done properly, and arent very reliable. how true is this?

yessewey

iTrader: (2)

lsvtec makes some pretty good torque and power so i dont know why anybody would call you a ricer or gay for going lsvtec, just do it right with some higher compression pistons if ur going all motor or leave stock pistons and go turbo. and you can go up to 8k rpm safely on it i have lots of friends that have lsvtec now and dont have any problems, just dont rag the **** out of the car and you'll be fine, but that goes for any motor.

Hanmin

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yessewey &raquo;</TD></TR><TR><TD CLASS="quote">lsvtec makes some pretty good torque and power so i dont know why anybody would call you a ricer or gay for going lsvtec, just do it right with some higher compression pistons if ur going all motor or leave stock pistons and go turbo. and you can go up to 8k rpm safely on it i have lots of friends that have lsvtec now and dont have any problems, just dont rag the **** out of the car and you'll be fine, but that goes for any motor.</TD></TR></TABLE>

rev to 8k safely? no. yes you can rev to 8k, but how reliable is that with the ls block? how long can you hold it at 8k for before you blow your block. the reason why ls's shouldn't be revved over the stock ls rev limit is because of the block, not because of the head... Build the block right then you'll be able to rev to the b16's rev limit.... reliably...

reactone

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

rev to 8k safely? no. yes you can rev to 8k, but how reliable is that with the ls block? how long can you hold it at 8k for before you blow your block. the reason why ls's shouldn't be revved over the stock ls rev limit is because of the block, not because of the head... Build the block right then you'll be able to rev to the b16's rev limit.... reliably...</TD></TR></TABLE>
This is very typical H-T hearsay. How many Ls/Vtecs have you owned/blown up? I'm guessing none or less...

Hanmin

none, but from evidence it is proven that its not safe to rev an ls vtec to 8k regularly and still have it last to 100k+. and try reading about the rod/stroke ratio and you'll start coming over to my side of the story.

suno

Thanks for the answers guys! It makes sense that if the block is built strong then I can rev higher, I just wasn't sure about adding a turbo to an ls-vtec.

About the little dispute here,....any block will give if it's rev'd at redline all the time, that's just common sence.

sageuvagony

LS was never meant to rev at 8,000 rpm. And going ls-vtec because you don't like the LS valve cover is a retarded reason. Is your hood see-thru? But I do agree that the LS valve cover is FUGLY!

suno

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yessewey &raquo;</TD></TR><TR><TD CLASS="quote">lsvtec makes some pretty good torque and power so i dont know why anybody would call you a ricer or gay for going lsvtec,</TD></TR></TABLE>

What I meant was that I only want to go ls-vtec because i hate the LS valve cover. It's ugly, I want a B16 top so I can paint it to match my car and put a carbon spark plug cover on it.
For some people that kind of stuff is nonsense but aesthetics are important to me and my love...the car hah. My reason for choosing the B18b is because it has better torque then the B16 and it's relatively cheap. But even going vtec with this motor would be good because of the added torque. But would the compression increase to if I have low comp 9:1 pistons inside?

suno

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sageuvagony &raquo;</TD></TR><TR><TD CLASS="quote">Is your hood see-thru? </TD></TR></TABLE>

yeah picked up one 'em dos see thruu show off hoods from Fast and Furious

SleepyHatchZ6

my buddies old Ls/vtec was bone stock literally bottem end stock and stock GSR head all OBD2 and when he would raced he shifted at 8500 for about six months then he boosted it with a garrett 67 trim t3/t4 turbo and a ridiculous AEM tune got him a baseline of 369whp 268ft/lb tq but then it blew it 4 months. but for a stock build it lasted him a while and it only seized up because of my oil pump im pretty sure

SleepyHatchZ6

im tryin to build an LS/VTEC turbo right now and i figurd it would be safer to run a small turbo for quick spool up then have my vtec handle on the late RPMS im planning on redlining at 7500 hundred tho until i get some decent rods

kuja396

The weak point on the ls block is the rod bolts, they use the exact same ones as the D series, and are pretty tiny. A set of arp rod bolts will greatly help that out. And ls blcoks also dont have a block girdle, unlike the GSR. Food for thought.

I plan on building a ls/vtec turbo, its good stuff if parts aren't skimped on.

SleepyHatchZ6

even tho the LS has D-series size rod bolts your rods are just as good as your bolts and vice versa if your rods handle 7500 MAX just because you put ARP rod bolts doesnt men you can go to 9000 all day

andoxviii

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sageuvagony &raquo;</TD></TR><TR><TD CLASS="quote">But I do agree that the LS valve cover is FUGLY!</TD></TR></TABLE>


OBD1 = ugly


OBD2 = purdy

sageuvagony

Ohh wow the OBD2 is pretty. I never knew there was a difference.

Hanmin

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by suno &raquo;</TD></TR><TR><TD CLASS="quote">Thanks for the answers guys! It makes sense that if the block is built strong then I can rev higher, I just wasn't sure about adding a turbo to an ls-vtec.

About the little dispute here,....any block will give if it's rev'd at redline all the time, that's just common sence. </TD></TR></TABLE>

It's whatever, I'm just providing you with the truth, im not saying its against the law or is impossible to rev it pass 8k. The block doesn't need to be built strong, just built right. The right combination of parts to get the right rod/stroke ratio with the compression you want while sustaining the displacement you are pleased with.

suno

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


OBD1 = ugly


OBD2 = purdy
</TD></TR></TABLE>

What Integra's came with the OBD2 Valve cover? Would I be able to put an OBD2 cover on a OBD1???? Its way nicer.

Hanmin

96+ hence obd2

obd0=91 and under
obd1=92-95
obd2=96+
I think obd2a=96-98
and obd2b=99-00 or 99+
I'm pretty sure it fits.

rarrior23

My sister's CR-V has a B20 in it, god I'm hoping she wrecks it lol.

nix94delsol

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rarrior23 &raquo;</TD></TR><TR><TD CLASS="quote">god I'm hoping she wrecks it lol.</TD></TR></TABLE>

*******

ive seen LSVT's at the track, one guy actually had tuned his own and was running high 11s

rarrior23

Haha she has a bad history of totaling cars in mild accidents. I didn't mean it, it was just wishful thinking.

reactone

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hanmin &raquo;</TD></TR><TR><TD CLASS="quote">none, but from evidence it is proven that its not safe to rev an ls vtec to 8k regularly and still have it last to 100k+. and try reading about the rod/stroke ratio and you'll start coming over to my side of the story.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hanmin &raquo;</TD></TR><TR><TD CLASS="quote">

It's whatever, I'm just providing you with the truth, im not saying its against the law or is impossible to rev it pass 8k. The block doesn't need to be built strong, just built right. The right combination of parts to get the right rod/stroke ratio with the compression you want while sustaining the displacement you are pleased with. </TD></TR></TABLE>
More H-T bandwagoning....
blah blah B16 close to 1.75 r/s ratio....

Block Rod length Stroke Rod ratio
D16A6, Z6, Y7, Y8 137mm 90mm 1.52:1
B16A1, A2, A3 134.4mm 77.4mm 1.74:1
B17A1 131.9mm 81.4mm 1.62:1
B18A1, B1, B20B4 137mm 89mm 1.54:1
B18C1, C5 138mm 87.2mm 1.58:1

Wow, look at that the revered B18C5 type aaarrrrr engine has a r/s ratio closer to that of an LS......OMG! Whats the redline of that engine??? 8400RPM!!!
go home, take out the garbage, do your homework.
Don't believe everything that you read kid.
How about YOU read more about rod/stroke ratio.
Have you ever seen an LS head with the VC off? The rockers will pop off in a light breeze. &lt;---There is a BIG limitation to those heads.
If you're looking for reliability, strap on your mad tite ihe and call it a day. High HP cars don't last 100k plus..
I have a BA in Mechanical Engineering, AND I take my Holset Turboed ls/vtec to 8400rpm on a regular basis. Go figure...


Modified by reactone at 8:55 AM 8/22/2008

sageuvagony

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

More H-T bandwagoning....
blah blah B16 close to 1.75 r/s ratio....

Block Rod length Stroke Rod ratio
D16A6, Z6, Y7, Y8 137mm 90mm 1.52:1
B16A1, A2, A3 134.4mm 77.4mm 1.74:1
B17A1 131.9mm 81.4mm 1.62:1
B18A1, B1, B20B4 137mm 89mm 1.54:1
B18C1, C5 138mm 87.2mm 1.58:1

Wow, look at that the revered B18C5 type aaarrrrr engine has a r/s ratio closer to that of an LS......OMG! Whats the redline of that engine??? 8400RPM!!!
go home, take out the garbage, do your homework.
Don't believe everything that you read kid.
How about YOU read more about rod/stroke ratio.
Have you ever seen an LS head with the VC off? The rockers will pop off in a light breeze. &lt;---There is a BIG limitation to those heads.
If you're looking for reliability, strap on your mad tite ihe and call it a day. High HP cars don't last 100k plus..
I have a BA in Mechanical Engineering, AND I take my Holset Turboed ls/vtec to 8400rpm on a regular basis. Go figure...


Modified by reactone at 8:55 AM 8/22/2008</TD></TR></TABLE>

So tell me why the stock rev cut off is not 8k or above. Is Honda being greedy?