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Old 11/12/2013, 09:09 AM   #1
lsvteceg45
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Default ls vtec compression help

so I got my hatch with motor in pieces supposed to have everything to run and wow was he wrong have had to rebuild motor entirely and decidedo build it while im at it...so I picked up a set of jdm b16a1 p30 piston heads which caused me to have to go lsvtec so my question is this setuo is supposed to run 12.21 compression is this safe on pump gas? also what is NEEDED ti make her run

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Old 11/12/2013, 02:03 PM   #2
TheMaster
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Default Re: ls vtec compression help

You'll be fine on pump gas. Also it's a little hard to answer your "what's all needed" question when we don't know what all you have currently for parts and how far along your motor is build wise.

How far put together is your motor? Is the head on along with your vtec oil pluming? Is it completely assembled and in the car but you don't have the wiring and ecu?

Need a little more info.

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Old 11/12/2013, 05:52 PM   #3
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Default Re: ls vtec compression help

my bad at this point in time motor is still in pieces...new crankshaft is installed and have all factory b18b1 parts for the block and the b16 head have intake manifolds for both...have a cold air intake, 4-2-1 exhaust manifold starter vtec distributor vtec spark plug wires gasket kit p30 piston heads b18b1 connecting rods oil line kit and chipped and pre tuned p28 ecu

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Old 11/12/2013, 05:53 PM   #4
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Default Re: ls vtec compression help

also have b18b1 timing belt b16 timing belt b18c oil pump and the vtec water pump on its way

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Old 11/14/2013, 09:43 AM   #5
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Default Re: ls vtec compression help

Stock LS rods? Will you be using ARP mains and rod bolts?

Get some H beam rods, if not you're just asking for it to blow up.

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Old 11/14/2013, 04:14 PM   #6
Charlie Moua
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Default Re: ls vtec compression help

stock rods with arp rod bolts are fine for 9500rpms.


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Old 11/17/2013, 07:32 PM   #7
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Default Re: ls vtec compression help

yeah still have the stock rods in it not planning on cracking 9500 rpms the only drag strip around here is 1/8 mile and won't need to very often plus it's a daily driver

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Old 11/18/2013, 08:07 PM   #8
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Default Re: ls vtec compression help

http://honda-tech.com/showthread.php?t=1676914

this literally has EVERYTHING you need to know about building an LSVtec. I utilized this when doing my motor, and it was extremely helpful. Also, if you are doing a mild build, which from the sounds of it you are, the ARP rod bolts will be just fine.

Do you have cams, cam gears, an intake, exhaust? Also, who is assembling the motor?

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Old 11/21/2013, 08:24 PM   #9
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Default Re: ls vtec compression help

i have a cold air intake and exhaust system also have a ram air (can't decide which to use) but have oem cams and cam gears for now going to be getting some gsr cams in it eventually...i'm assembling myself along with my buddy

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Old 11/26/2013, 02:06 PM   #10
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Default Re: ls vtec compression help

Quote:
Originally Posted by lsvteceg45 View Post
i have a cold air intake and exhaust system also have a ram air (can't decide which to use) but have oem cams and cam gears for now going to be getting some gsr cams in it eventually...i'm assembling myself along with my buddy
okay, so i have some concerns......

what oem cams?
is it the stock exhaust system?
why gsr cams?
do you have a helms manual?
ram air??? short ram....?

no lie, building a motor is not something to attempt if you are unfamiliar with cars. no offense, but the majority of your posts make it seem as though this is your first time swinging a wrench. i'm not saying it can't be done, but the precision needed to complete a motor and NOT have it grenade the first time you crack vtec.....

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Old 11/28/2013, 10:02 AM   #11
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Default Re: ls vtec compression help

not first time swinging a wrench just first time dealing with modifications and hondas to be honest...have after market exhaust and header currently running b16a1 cams but have heard the b18c cams get a little more pull in vtec decided to run the cold air intake so i don't have to worry about mud puddles as much

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Old 01/02/2014, 02:16 PM   #12
jawnewbe2
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Default Re: ls vtec compression help

Quote:
Originally Posted by lsvteceg45 View Post
not first time swinging a wrench just first time dealing with modifications and hondas to be honest...have after market exhaust and header currently running b16a1 cams but have heard the b18c cams get a little more pull in vtec decided to run the cold air intake so i don't have to worry about mud puddles as much
you will get a better vtec pull with the b16 cams from what i know which is why they say for a poor mans type r gsr


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Old 02/02/2014, 03:19 PM   #13
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Default Re: ls vtec compression help

You're building similar to what I built.

B18B1 block
GSR Crank
Eagle H-Beam Rods
ITR USDM Pistons
JDM OBD0 B16 Head
ARP Main and Rod bolts with ARP head studs.

Static compression is 11.3 I believe, I run premium and still need a tune.

I have a 2.5" Tri-Y with a GReddy SP2 2.5" back (or whatever the actual measurement is in metric)

True cold air intake pulling from the wheel skirt. It puts plenty of power down and will break the tires loose in first going from part throttle to full throttle, just dont have numbers yet. The b16's are bench tested to flow better than GSR heads and the cams have a tad more power than the GSR.

Follow that HT build thread, I also used it as a reference.


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