Starting a new build, and had a Q
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Honda-Tech Member
Joined: Nov 2004
Posts: 931
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From: cortland, ohio, usa
Starting a new build, and had a Q
well, my car use to be turbo'd and i ended up busting a sleeve.
so i decided to go NA. the car is mostly for the road course anyway and the turbo proved to be to much.
so here is what I am working with
Ls Crank, Ls Eagle rods
ITR block
Wiseco Pistons Listed for an LS motor to be 9.3-9.8 :1
B16 head, Crower Valvetrain
Skunk2 Stage 2 cams
not quite sure on the header yet
home made ITB's
thats the basics of it. now i am trying to figure out my compression ratio, and i cant seem to find a decent compression calculator, and half the information i find on our engines is all botched together.
on wiseco's website, the pistons dish is measured to be -4ft, wtf? after 4 years of engineering i have never seen that used for any kind of fluid measurement.
also, what is the f*cking deck height of this block. from what i gathered its the same as a B18A/B.
what i am getting at is isnt this basically like an ls/vtec build? if so, then i think my comp would be around 10:1. I plan on taking off about .030 between the block and head, .015 on each. does this sound like a good idea? or should i ditch these pistons and go for something else.
the goal is 230-240 hpish, i would be happy
so i decided to go NA. the car is mostly for the road course anyway and the turbo proved to be to much.
so here is what I am working with
Ls Crank, Ls Eagle rods
ITR block
Wiseco Pistons Listed for an LS motor to be 9.3-9.8 :1
B16 head, Crower Valvetrain
Skunk2 Stage 2 cams
not quite sure on the header yet
home made ITB's
thats the basics of it. now i am trying to figure out my compression ratio, and i cant seem to find a decent compression calculator, and half the information i find on our engines is all botched together.
on wiseco's website, the pistons dish is measured to be -4ft, wtf? after 4 years of engineering i have never seen that used for any kind of fluid measurement.
also, what is the f*cking deck height of this block. from what i gathered its the same as a B18A/B.
what i am getting at is isnt this basically like an ls/vtec build? if so, then i think my comp would be around 10:1. I plan on taking off about .030 between the block and head, .015 on each. does this sound like a good idea? or should i ditch these pistons and go for something else.
the goal is 230-240 hpish, i would be happy
Honda-Tech Member
Joined: Oct 2005
Posts: 2,501
Likes: 2
From: expensive land, usa
Re: Starting a new build, and had a Q
well, my car use to be turbo'd and i ended up busting a sleeve.
so i decided to go NA. the car is mostly for the road course anyway and the turbo proved to be to much.
so here is what I am working with
Ls Crank, Ls Eagle rods
ITR block
Wiseco Pistons Listed for an LS motor to be 9.3-9.8 :1
B16 head, Crower Valvetrain
Skunk2 Stage 2 cams
not quite sure on the header yet
home made ITB's
thats the basics of it. now i am trying to figure out my compression ratio, and i cant seem to find a decent compression calculator, and half the information i find on our engines is all botched together.
on wiseco's website, the pistons dish is measured to be -4ft, wtf? after 4 years of engineering i have never seen that used for any kind of fluid measurement.
also, what is the f*cking deck height of this block. from what i gathered its the same as a B18A/B.
what i am getting at is isnt this basically like an ls/vtec build? if so, then i think my comp would be around 10:1. I plan on taking off about .030 between the block and head, .015 on each. does this sound like a good idea? or should i ditch these pistons and go for something else.
the goal is 230-240 hpish, i would be happy
so i decided to go NA. the car is mostly for the road course anyway and the turbo proved to be to much.
so here is what I am working with
Ls Crank, Ls Eagle rods
ITR block
Wiseco Pistons Listed for an LS motor to be 9.3-9.8 :1
B16 head, Crower Valvetrain
Skunk2 Stage 2 cams
not quite sure on the header yet
home made ITB's
thats the basics of it. now i am trying to figure out my compression ratio, and i cant seem to find a decent compression calculator, and half the information i find on our engines is all botched together.
on wiseco's website, the pistons dish is measured to be -4ft, wtf? after 4 years of engineering i have never seen that used for any kind of fluid measurement.
also, what is the f*cking deck height of this block. from what i gathered its the same as a B18A/B.
what i am getting at is isnt this basically like an ls/vtec build? if so, then i think my comp would be around 10:1. I plan on taking off about .030 between the block and head, .015 on each. does this sound like a good idea? or should i ditch these pistons and go for something else.
the goal is 230-240 hpish, i would be happy
You need more compression to use the most of those cams, guessing 10-10.5 with the ls rods. 230-240 hp is B20 territory, stretching it for a 1.8 with stock ish compression(for a ITR)
Honda-Tech Member
Joined: Nov 2007
Posts: 418
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From: 909 socal, ca, usa
Re: Starting a new build, and had a Q
its not quite a ls vtec since you are using a vtec block with a vtec head. if you plan on making that much power you are gonna have to get a different piston set up and alot of head work and tuning. good luck though.
Re: Starting a new build, and had a Q
Headwork and a bigger motor will get you in the 230+ HP range. I havnt seen too many 1.8L motors in that HP range with decent gas (pump or 100 octane).
Thread Starter
Honda-Tech Member
Joined: Nov 2004
Posts: 931
Likes: 0
From: cortland, ohio, usa
Re: Starting a new build, and had a Q
not looking to go b20. but thanks for the info.
i could run some type R pistons and sell off the forged wisecos.
i am mainly looking for reliability and a good powerband for the track.
you think some type R pistons would set me good? i think my compression would be close to 12:1, i am guessing P73 pistons
any recommendations on some OEM pistons?
anyone wanna do a trade?
i could run some type R pistons and sell off the forged wisecos.
i am mainly looking for reliability and a good powerband for the track.
you think some type R pistons would set me good? i think my compression would be close to 12:1, i am guessing P73 pistons
any recommendations on some OEM pistons?
anyone wanna do a trade?
Last edited by raiden571; Apr 17, 2009 at 08:16 AM.
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