LS Vtec turbo

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Old Sep 21, 2008 | 09:53 PM
  #1  
T3T4Honda's Avatar
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Default LS Vtec turbo

Hello everyone. I am new to honda-tech. I have been a member of turbod16.com for quite awhile. I drive a 96 civic ex. I have swapped the motor 3 times. All my motors have been boosted single cams. My last set up made 253 whp and 223 wtq on 14 psi. Due to poor tunning (i think) I have had nothing but issues and my last set up I am pulling out because I lost compression in one of my cylinders. I have decided to not build another single cam because I came up on a good deal for an LS Vtec that was turbod before and blown.

The bottom end is a b18b1 sleeved by benson. I bored the block to 84mm, purchased a set of 84mm JE pistons and am going to re-use the eagle H Beams. I micro-polished the crank.

The head is a b16a2 head, i just installed titanium retainers, duel valve springs, and will use the itr cams that came with the head (for now)

My question is this...if you have experience with building an ls vtec please give me some input on what im about to do and let me know if I am doing the right thing or not...I have done some research and have some experience in building motors...however this is my first ls vtec..

The bottom end is off a 94 integra, but i know the newer water pump from the 2000 itr for example will bolt right up and it flows beter. Along with it ill get the itr timing belt so the teath match up. I also plan on using a 2000 itr oil pump. Because its a 84mm bore, i was going to go with a b20 head gasket. Now the crank gear, does that have to be changed being I am using a 2000 itr water pump and timing belt? or can i re-use the 94 ls gear? I guess any obd 2 distributor will work ( i am using a p28 with a jumper harness, but my harness under the hood is still an obd2 harness) I plan on ordering this stuff, except the distributor, and some other gaskets and seals, from hondapartsunlimited.com. There is plenty more about this set up but this is getting long so ill post this.

Thanks in advance for any help anyone can offer, Its going to be a fun build and I look forward to posting up lots of pics for everyone.


Modified by T3T4Honda at 11:45 PM 9/24/2008
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Old Sep 21, 2008 | 10:19 PM
  #2  
twinksack's Avatar
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Default Re: LS Vtec turbo (T3T4Honda)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by T3T4Honda &raquo;</TD></TR><TR><TD CLASS="quote">Hello everyone. I am new to honda-tech. I have been a member of turbod16.com for quite awhile. I drive a 96 civic ex. I have swapped the motor 3 times. All my motors have been boosted single cams. My last set up made 253 whp and 223 wtq on 14 psi. Due to poor tunning (i think) I have had nothing but issues and my last set up I am pulling out because I lost compression in one of my cylinders. I have decided to not build another single cam because I came up on a good deal for an LS Vtec that was turbod before and blown.

The bottom end is a b18b1 sleeved by benson. I bored the block to 24mm, purchased a set of 24mm JE pistons and am going to re-use the eagle H Beams. I micro-polished the crank.

The head is a b16a2 head, i just installed titanium retainers, duel valve springs, and will use the itr cams that came with the head (for now)

My question is this...if you have experience with building an ls vtec please give me some input on what im about to do and let me know if I am doing the right thing or not...I have done some research and have some experience in building motors...however this is my first ls vtec..

The bottom end is off a 94 integra, but i know the newer water pump from the 2000 itr for example will bolt right up and it flows beter. Along with it ill get the itr timing belt so the teath match up. I also plan on using a 2000 itr oil pump. Because its a 24mm bore, i was going to go with a b20 head gasket. Now the crank gear, does that have to be changed being I am using a 2000 itr water pump and timing belt? or can i re-use the 94 ls gear? I guess any obd 2 distributor will work ( i am using a p28 with a jumper harness, but my harness under the hood is still an obd2 harness) I plan on ordering this stuff, except the distributor, and some other gaskets and seals, from hondapartsunlimited.com. There is plenty more about this set up but this is getting long so ill post this.

Thanks in advance for any help anyone can offer, Its going to be a fun build and I look forward to posting up lots of pics for everyone. </TD></TR></TABLE>

wow 24mm pistons man those are some small *** pistons are u sure there not 84mm
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Old Sep 21, 2008 | 10:47 PM
  #3  
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Default Re: LS Vtec turbo (twinksack)

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

wow 24mm pistons man those are some small *** pistons are u sure there not 84mm </TD></TR></TABLE>

bahahaha i was about to say that.. thats sum small **** uber high comp tho ftw.

but use all oem vtec parts onthe bottom end aka oil pump timing belt **** like that.. and get a good oil cooler.. thats my 2 cents.. and a good tune i recomend howard at rlz in concord NC
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Old Sep 22, 2008 | 06:45 AM
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Default Re: LS Vtec turbo (luvmihatch)

i have a built ls/vtec.. its running strong.
I'd recommend aftermarket rods/pistons.
All OEM honda bearings, seals, timing belt, water pump, etc..
You can use any b series dohc vtec water pump, and timing belt. (except the b16a because of block deck height)
or you can use b series non vtec water pump with matching belt.
dont mix and match, wont work.
Any obd2 oil pump will work, you gotta have the threaded holes for the crank sensor, or you can do the mod off of the distributor.
i'd recommend you do it right though.
you're going to need all the mounts from a 99-00 civic si, shift linkage from any 94-01 integra or 99-00 civic is. b series axles.
you have an EX, so your engine harness so almost be plug and play. some extensions of a few of the sensors might be required.
I'm using the golden eagle ls vtec conversion kit.
It seems to be okay, its not leaking or anything like some people have said.
You're going to need an 84mm head gasket (not 24mm.. i dont even think motorcycle engines are 24mm).. so a CRV headgasket will work, or you can get like a cometic or something.
Use ARP head studs, get them for the head you're using. so B16A head studs.
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Old Sep 22, 2008 | 06:49 AM
  #5  
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Default Re: LS Vtec turbo (geebs)

People say that ITR oil pumps have more pressure..
go to hondaautomotiveparts.com or whatever online parts place you like, and look at the part numbers for the ITR and like the GSR or Civic SI oil pump..
the part numbers are all identical.. dont pay more cause of the name..
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Old Sep 22, 2008 | 09:09 AM
  #6  
T3T4Honda's Avatar
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Default Re: LS Vtec turbo

THanks for everyone response...yea typo i ment 84 mm pistons.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by geebs &raquo;</TD></TR><TR><TD CLASS="quote">i have a built ls/vtec.. its running strong.
I'd recommend aftermarket rods/pistons.
All OEM honda bearings, seals, timing belt, water pump, etc..
You can use any b series dohc vtec water pump, and timing belt. (except the b16a because of block deck height)
or you can use b series non vtec water pump with matching belt.
dont mix and match, wont work.
Any obd2 oil pump will work, you gotta have the threaded holes for the crank sensor, or you can do the mod off of the distributor.
i'd recommend you do it right though.
you're going to need all the mounts from a 99-00 civic si, shift linkage from any 94-01 integra or 99-00 civic is. b series axles.
you have an EX, so your engine harness so almost be plug and play. some extensions of a few of the sensors might be required.
I'm using the golden eagle ls vtec conversion kit.
It seems to be okay, its not leaking or anything like some people have said.
You're going to need an 84mm head gasket (not 24mm.. i dont even think motorcycle engines are 24mm).. so a CRV headgasket will work, or you can get like a cometic or something.
Use ARP head studs, get them for the head you're using. so B16A head studs.</TD></TR></TABLE>

I am going to use 2000 itr and pump do i need to change the crank gear as well or will the ls one be fine? I have after market pistons and rods, but i went with the acl race bearings because they are more like the vtec bearings from what i understand. The LS bearings are not as good as the oem vtec ones, and the oem vtec ones wont work. I have the mounts, the shift linkage, and the golden eagle kit. ARP has a head stud kit for a b20/vtec so thats what i was going to buy...i heard b16 ones wont work... being b20 and ls bottom end is the same other than bore i figures those would work. and then i was going to use oem b20 head gasket. The crank sensor im not going to need because that is an obd2 sensor...i will be running a p28, I didnt even run it on my d16y8. I made a mod anyway that i still have thinking i was going to use it in the past.

obd2 b16 distributor should be fine correct...after all its a b16a2 head. Will i need to change the crank gear being i will be using itr water pump and timing belt? The crank gear is currently a 94 ls gear.
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Old Sep 22, 2008 | 09:28 AM
  #7  
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Default

just so you know all obd2 96+ dohc oil pumps are the same

nevermind geebs all ready pointed that out
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Old Sep 22, 2008 | 10:47 AM
  #8  
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Default Re: (thatblkguy)

yea i know they are the same. They all have the same part number. The obd 2 pumps are beter than the obd 1 pumps. Any information about my crank gear question from before? should i switch to the obd 2 gear set up? I am not going to be using a crank speed sensor, is that the only reason the obd2 crank gear is different?
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Old Sep 22, 2008 | 04:25 PM
  #9  
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From: kingston, ny, usa
Default Re: (T3T4Honda)

you need an obd2 crank gear.. has the teeth on it for the crank sensor..
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Old Sep 24, 2008 | 10:44 PM
  #10  
T3T4Honda's Avatar
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Default Re: (geebs)

Ok well im not using the crank sensor so if thats the only reason you would use it then Im not going to buy it. My next purchase is going to be the fuel pressure regulator. My power goal is going to be around 300-350 so do i need to buy a fuel pressure regulator? Im going to be running hondata s300. I already have 550 injectors and a 255 fuel pump so im thinking that will do. i never used a frp on my old set ups...what do you guys think? If i do get an aftermarket one, I will probably get the aem one. I have an itr intake manifold with a dc power fuel rail
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Old Sep 25, 2008 | 06:40 AM
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Default Re: (T3T4Honda)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by T3T4Honda &raquo;</TD></TR><TR><TD CLASS="quote">Ok well im not using the crank sensor so if thats the only reason you would use it then Im not going to buy it. My next purchase is going to be the fuel pressure regulator. My power goal is going to be around 300-350 so do i need to buy a fuel pressure regulator? Im going to be running hondata s300. I already have 550 injectors and a 255 fuel pump so im thinking that will do. i never used a frp on my old set ups...what do you guys think? If i do get an aftermarket one, I will probably get the aem one. I have an itr intake manifold with a dc power fuel rail</TD></TR></TABLE>

For that hp, no. The stock can work at that level.
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Old Sep 27, 2008 | 01:07 PM
  #12  
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Default Re: (TheShodan)

ok thanks...im going to take some pics of what I have so far tonight and post them up, thanks for everyones help.
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