Lsvtec 12.5:1 compression maybe 13.1 with 50shot?
#1
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Lsvtec 12.5:1 compression maybe 13.1 with 50shot?
fuilybuilt lsvtec would 50shot screw anything up would need at least 92 octance i only get 91 and i usally run 100,any comments?
EDIT:here the setup if you want it
b16 Dh-racing head Port and Poilsh
-ericking racing 68mm throttle body
-ib spec dual springs
-ferra valves
-ferra retainers
-ferra rocker arms
-jun 3 cams
-toda cam gears
-arp head bolts
-skunk 2 intake manifold
-j's racing intake with custom air ventalation to bumper
-smsp header
-370cc injectors
b18b1 block
-sleeved to 85mm
-ib spec superdupers 85mm
-ls crank
-ib spec rods
-arp rod bolts
-z10 griddle
-custom oil pan
-itr tranny
-hasports hrydo to cable convo
-hondata
Modified by FlipSkater at 10:53 PM 8/11/2004
EDIT:here the setup if you want it
b16 Dh-racing head Port and Poilsh
-ericking racing 68mm throttle body
-ib spec dual springs
-ferra valves
-ferra retainers
-ferra rocker arms
-jun 3 cams
-toda cam gears
-arp head bolts
-skunk 2 intake manifold
-j's racing intake with custom air ventalation to bumper
-smsp header
-370cc injectors
b18b1 block
-sleeved to 85mm
-ib spec superdupers 85mm
-ls crank
-ib spec rods
-arp rod bolts
-z10 griddle
-custom oil pan
-itr tranny
-hasports hrydo to cable convo
-hondata
Modified by FlipSkater at 10:53 PM 8/11/2004
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#10
Honda-Tech Member
Re: Lsvtec 12.5:1 compression maybe 13.1 with 50shot? (FlipSkater)
11.0:1 is the highest CR I go with when running nitrous. Another thing you need to look at is how the Jun 3's will work in relation to the nitrous. As you know, with boost you are essentially blowing it out of the exhaust which leads me to believe you will do the same with the nitrous.
#12
Re: Lsvtec 12.5:1 compression maybe 13.1 with 50shot? (FlipSkater)
personally, I would not deal with the problems of unequal distribution of nitrous/fuel from using wet/dry shot on a motor that I spent good money on.
When it comes to having a reliable nitrous setup, I think dp is the only way to fly. Of course with dp, you can only go as low as an 80 shot.
When it comes to having a reliable nitrous setup, I think dp is the only way to fly. Of course with dp, you can only go as low as an 80 shot.
#14
Honda-Tech Member
Re: Lsvtec 12.5:1 compression maybe 13.1 with 50shot? (FlipSkater)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FlipSkater »</TD></TR><TR><TD CLASS="quote">why direct port when i hear that i think engine boom! </TD></TR></TABLE>
When i hear 12.5:1 cr w/ jun 3's and nitrous i think the same thing. The 100 octane will help out a bit, but to be safe you need to pull a good amount of timing.
I think you have a little more homework to do as far as nitrous goes... A dirct port will provide 1 jet into each runner combining both fuel and nitrous giving the same amounts of fuel/nitrous per cylinder.
When i hear 12.5:1 cr w/ jun 3's and nitrous i think the same thing. The 100 octane will help out a bit, but to be safe you need to pull a good amount of timing.
I think you have a little more homework to do as far as nitrous goes... A dirct port will provide 1 jet into each runner combining both fuel and nitrous giving the same amounts of fuel/nitrous per cylinder.
#17
Honda-Tech Member
Re: Lsvtec 12.5:1 compression maybe 13.1 with 50shot? (FlipSkater)
I know a guy running a Direct Port nitrous setup sprayin 80 and that car hauls ***. But the only work he has done is to the head.
#20
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Re: Lsvtec 12.5:1 compression maybe 13.1 with 50shot? (FlipSkater)
get rid of the dry nitrous kit. use a direct port kit, especially if you want to run high compression. run the high octane gas. pull out more timing than you need, just remember to start safe on the safe side. you can add timing back in gradually when you are tuning the nitrous. if you run jun 3's your going to need to tune them for nitrous and compromise some of the all motor power, you have to tune out the overlap caused by the high duration cams so you don't spray the nitrous out the exhaust and waist it.
i don't think high compression and nitrous is a bad idea, just as long as you know what you are getting into. start Conservative and make sure its tuned.
i don't think high compression and nitrous is a bad idea, just as long as you know what you are getting into. start Conservative and make sure its tuned.
#21
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Re: Lsvtec 12.5:1 compression maybe 13.1 with 50shot? (shant)
thanks very usefull info but i like to know you have to tune out the overlap ok if i spray and it goes out the exhaust?what cams would fix this but still give me enough power like jun 3
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Re: Lsvtec 12.5:1 compression maybe 13.1 with 50shot? (FlipSkater)
im not saying dont use the jun 3's. you need to use adjustable cam gears and adjust the cam overlap to take advantage of the nitrous.
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Re: Lsvtec 12.5:1 compression maybe 13.1 with 50shot? (FlipSkater)
right now i have
b18a1 block
standard pr3 pistons.
ls rods,
arp rod bolts.
stock gsr head,
arp head studs,
ctr cams
nitrous directport 120shot from launch,
c16 race fuel
msd digital 6 ignition.
not sure when it will give up but thats what i have.
the civic is a 92 si hatch 1850 with me.
b18a1 block
standard pr3 pistons.
ls rods,
arp rod bolts.
stock gsr head,
arp head studs,
ctr cams
nitrous directport 120shot from launch,
c16 race fuel
msd digital 6 ignition.
not sure when it will give up but thats what i have.
the civic is a 92 si hatch 1850 with me.