ls/vtec with Nitrous or Boost?

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Old Jun 24, 2003 | 12:46 PM
  #1  
specie's Avatar
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Default ls/vtec with Nitrous or Boost?

Just trying to decide what to do at this moment. Of course the turbo route is going to make more power but also a little more expensive.

Turbo setup:
LS block, Wiseco (9.2:1), ls rods, b16 head, gsr cams, itr intake manifold, Maxrev kit (T3/T4e 57 trim with .63A/R), 12-14psi
3bar map with Hondata. Power would be great but how streetable would it really be? Although, I think someone hear ran a 12.6 or so on drag radials....yes that blue Si. But traction would be a big issue for a daily driver and more maintance. However, it's very tempting looking at the Maxrev kit in my room.

Nitrous setup:
LS block, higher compression (~11.5:1 forged pistons), ls rods, arp rod bolts, Skunk2 Stage 2 cams (itr/portflow valve springs), itr intake manifold, some sort of 4-1 header (JDM DC or itr), zex kit with a 50 shot. Less maintance since I won't really use the nitrous on the streets, good powerband for a daily driver with decent traction. How many people have a nitrous setup that's pushing over 220whp (4 cyclinders)?


Goals: High 12s on drag radial or maybe slicks in a '95 Integra with full interior. Just mid to low 13s on street tires...yet reliable enough for 120-150 miles a week with little abuse. I don't really take my car over 2500rpm...only once in a while.

I'd like to hear about your experiences ...especially with a nitrous setup that's making some decent power. I'd like to limit the opinions though. I've seen stock rods sleeves held about 320-350whp. A guy in j-ville, FL with a stock ls longblock running 12.5s @ 116mph or so or drag radials. Also a guy in Tampa ran a 12.2 or something like that in a Civic coupe with full interior (ls/vtec with just forged pistons). Thanks.

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Old Jun 24, 2003 | 10:02 PM
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Default Re: ls/vtec with Nitrous or Boost? (specie)

still have a month or two before putting everything together.
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Old Jun 24, 2003 | 10:09 PM
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Default Re: ls/vtec with Nitrous or Boost? (specie)

Boost doesnt cost $10 per 1min of use (around ~3mins for a $30 10lb bottle 55shot). Thats all i needed to make that deciesion. Boost is all free. Although costs more upfront...your on the "bottle" all the time so to speak.

liam
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Old Jun 24, 2003 | 10:13 PM
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Default Re: ls/vtec with Nitrous or Boost? (specie)

I did LS/VTEC turbo. It sucked. Granted I had stock internals. If you're gonna build the block, then you'd have a machine. I'd go turbo, no questions asked. Low compression is the way to go. Make sure you get some good LS rods. I'd go alot lower than 9.2. The SI head will add alot of compression to the stock LS block, so to compensate, I'd do 8.5:1 compression pistons. I'm running 8.8:1 Endyne in my GS-R block and they are great. You'll be able to boost like 20 psi if its tuned right with that low compression.

Bottles are for babies. Snails never fail.
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Old Jun 25, 2003 | 08:27 PM
  #5  
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Default Re: ls/vtec with Nitrous or Boost? (Type-GS-R-Turbo)

I probably won't use a whole bottle in 6 months...lol.

I already have the pistons...so I think it'll jump to 9.6 cr or something like that.

I think I'll like the blowdryer sound...might just go with that.
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Old Jun 25, 2003 | 08:35 PM
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Default Re: ls/vtec with Nitrous or Boost? (Type-GS-R-Turbo)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Type-GS-R-Turbo &raquo;</TD></TR><TR><TD CLASS="quote">I did LS/VTEC turbo. It sucked. Granted I had stock internals. If you're gonna build the block, then you'd have a machine. I'd go turbo, no questions asked. Low compression is the way to go. Make sure you get some good LS rods. I'd go alot lower than 9.2. The SI head will add alot of compression to the stock LS block, so to compensate, I'd do 8.5:1 compression pistons. I'm running 8.8:1 Endyne in my GS-R block and they are great. You'll be able to boost like 20 psi if its tuned right with that low compression.

Bottles are for babies. Snails never fail.</TD></TR></TABLE>

but it also makes other people wonder when i smoked up a turbo ls hatch with 10 psi of boost maybe more that was gutted and dynoed over 210whp on a hot day one night

and i spun becouse of street tires and i sprayed in first gear the traction part was ok he had me by 3 cars by the 1/8 then i got to be on top by a car

think about it 3k for a turbo kit 500-600 for a n2o kit thats alot of bottles to fill for that much of a differace
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Old Jun 25, 2003 | 09:07 PM
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Default Re: ls/vtec with Nitrous or Boost? (bottlefedb18c1)

go turbo...i went nitrous before i went turbo and i got sick of refilling the bottle time and time again. plus it's unsafe to use nitrous on the highway(assuming you're just slapping on a kit). whenever i ran out of nitrous...my turbo buddies would just pass me like i was in park. that's when i said enough of that and pieced together my turbo kit and started kicking butt.
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Old Jun 25, 2003 | 09:08 PM
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Default Re: ls/vtec with Nitrous or Boost?

I have an LS/Vtec and I was running nitrous driving on the freeway going about 70... totally vacant, I was with 3 other integra buddies (all in our cars) and we were just ******* around doing 3rd gear to 4th gear pulls. This is about a week after i got my bottle warmer, so i decided to heat the bottle up to about 1200psi and i did a 3rd gear to 4th pull... about 80mph @ 6800rpm car goes kablammo... drive to friends house with clouds of smoke following everywhere.

I then got the car back to my house and took it apart to find this

This was all on a nitrous express 50 shot, 1200 psi bottle... b16 head on a b18b block.

-Ryan
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Old Jun 25, 2003 | 09:13 PM
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Default Re: ls/vtec with Nitrous or Boost? (Rpc07)

pulling into erin's driveway.... i pop rpc07's hood. A slight bit of smoke appears and instantly it comes to me...
Tegasaurus: WhuZzZ thAT fUhunn?!
faint background laughter, then an earie silence
Rpc07: shut the **** up, this isn't a laughing matter
Nate: dude, just replace your plugs, ur fine.

haha, man, good thing ur finally getting
ur motor back.... 5 months later (damn scammers who take $3000 and run)

-ryan
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Old Jun 25, 2003 | 09:16 PM
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Default Re: ls/vtec with Nitrous or Boost? (Rpc07)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rpc07 &raquo;</TD></TR><TR><TD CLASS="quote">
</TD></TR></TABLE>

aint that a beauty :t
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Old Jun 25, 2003 | 09:18 PM
  #11  
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Default Re: ls/vtec with Nitrous or Boost? (jonoknut)

yes it sure is.

its my trophy
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Old Jun 25, 2003 | 09:21 PM
  #12  
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Default Re: ls/vtec with Nitrous or Boost? (Rpc07)

why cus you cant drive? didnt tell them you mis-shifted?

j.p
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Old Jun 25, 2003 | 09:43 PM
  #13  
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Default Re: ls/vtec with Nitrous or Boost? (jonoknut)

no i forgot to mention that part.....

lol
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Old Jun 25, 2003 | 09:45 PM
  #14  
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Default Re: ls/vtec with Nitrous or Boost? (jonoknut)

bah... im sure a few trips to 8700 rpm on stock b16 head and ls bottom end couldn't hurt things........ could they?
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Old Jun 25, 2003 | 09:55 PM
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Default Re: ls/vtec with Nitrous or Boost? (specie)

I say go with the turbo.


I just recently finished my LS/Vtec turbo, and took it to the track. here is a little info on the setup...

B16 head stock with stock cams
B18B bottom end completely stock
Max-rev manifold turbo and DP
GSR trans

Im currently running 6.5 to 7 psi and with slicks I ran a 13.1 @ 106MPH But managed to blow the wastegate gasket during the run.

I drive this car every day at the same boost all I do at the track is throw on the slicks. On another note for fuel im running the ghetto FMU and missing link. Also the car never sees over 7200 RPMs.

I know these times aren't the best times in the world but with some practice im sure I can get her into the 12's.
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Old Jun 26, 2003 | 06:11 AM
  #16  
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Default

but i have noticed from my turbo gsr to my hatch with spray is that turbo car hate 90+ deg weather and my hatch loves it
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Old Jun 27, 2003 | 07:26 PM
  #17  
specie's Avatar
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Default Re: ls/vtec with Nitrous or Boost? (DOHCarp)

I'm in FL and it is hot as hell most of the year. I've read that turbo doesn't like heat too much either. Figure, I probably won't rev high enough to boost most of the time though and a low compression ratio would be easier to maintain for a daily driver with vary weather condition.

DOHCarp: What car is this in? It's pretty much all I'm looking for. Setup sounds nice and simple and at 6-7psi...that's just badass.

Thanks everyone for their input.

Oh yeah...the piston top by itself...that's cool. Glad you're getting your motor back together.
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Old Jun 27, 2003 | 08:27 PM
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Default Re: ls/vtec with Nitrous or Boost? (specie)

I have a question, why would you spend all this money on a motor and then either a nitrous setup or turbo and in both setups your keeping the stock rods? If your getting pistons why would you cheap out and not put some good rods in there since i assumer you'll be reving to 8k. Just a though Do it right the first time.
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Old Jun 27, 2003 | 08:34 PM
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Default Re: ls/vtec with Nitrous or Boost? (Rpc07)

that melted piston is becuz you leaned out. i guess your high bottle pressure surpassed the amount of fuel that the nitrous was tuned for.

i used to spray for yrs until i got tired of filling bottle every weekend. i would go through 1 bottle a night. i had a 4 fogger kit and i was spraying 120 shot into a stock B16. sure, i blew up about 5-6 times but it was my fault every time. i blew up 3 times becuz of over heating the bottle.

anyhow, filling nitrous bottles can be very expensive. bite the bullet and save for a turbo kit. it's definitely worth it.
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