Feedbback On My Ls/vtec

[tnsxsear]

K peeps, im finally in the assembly stage on my second Ls/Vtec motor. I just wants some feedback as to what else everyone thinks i should do, and what kind of numbrs i should be putting down.. Here is what I have so far..

00 Civic Si Head with ITR valvetrain and CTR camshafts and ITR Throttlebody (stock intake mani)
99 Integra Ls Block with new Gsr Oil Pump/Water Pump, Ls Rods with ITR Pistons, New ARP rodbolts
00 Civic SI Tranny w/ Clutchmasters Stage 3
Chikara Header
Apex-I N1 catback
All in a 98 Ek Hatchback. With obd2 p72 and an Apex-I VAFC. Im hoping for atleast 185hp, but I was really dissapointed with my old motor which only put 142 to the wheels, minus all the ITR and CTR goodies. Thanks for feedback.. -Paul

 

[posol]

how did you fit itr pistons on ls rods? did you shave the rods??

intake?

high-flow cat?

arp headstuds?

z10 block girdle?

ear plugs for yourself once you start driving with an N1

 

[pills_PMD]

i think the p73 pistons and the LS rods work together... c-speedracing did an LS/VTEC build up where they used that combo and netted around 11:1

 

[posol]

according to our FAQ by lsvtec, they don't fit.
only ctr/b16 will fit an LS rod with out modification

 

[tnsxsear]

Intake: Regular 'ol AEMan HKS filter

Highflow cat: No, just 2 1/4 piping straightt through to n1

Arp Headstuds: Yes

z10 girdle: no, but i have a gsr crank girdle,windage tray and main caps, but im missing the pickup and pan...

Ear Plugs: Yes

As for the pistons and rods, I just got the pistons pressed onto the rods when i did my first motor, and it worked well...-Paul

 

[pills_PMD]

i saw that.. but i was wondering if it is 100% accurate.

 

[tnsxsear]

So what else do you all recommend I should do? Performance and reliability wise? Thanx in advance for all your help.. -Paul

 

[lsvtec]

Originally posted by pills_PMD@Apr 15 2003, 06:31 AM
i saw that.. but i was wondering if it is 100% accurate.

To the best of my experience it is accurate. I bought ITR pistons from the Acura dealer in Boulder, CO with the intent of using them in my LSVTEC. When I took my LS rods/pistons and the ITR pistons to the machine shop they called me an hour later and told me the pistons wouldn't fit without them shaving the rods down. I took my B16 pistons in with me to double check and the rod was too large to fit in the piston. CTR/B16 pistons will fit as the top of the rods in these engines are the same size as LS rods, but 94+GSR/ITR rods are thinner.

 

[tnsxsear]

Originally posted by lsvtec+Apr 15 2003, 12:10 PM-->

pills_PMD

@Apr 15 2003, 06:31 AM
i saw that.. but i was wondering if it is 100% accurate.

To the best of my experience it is accurate. I bought ITR pistons from the Acura dealer in Boulder, CO with the intent of using them in my LSVTEC. When I took my LS rods/pistons and the ITR pistons to the machine shop they called me an hour later and told me the pistons wouldn't fit without them shaving the rods down. I took my B16 pistons in with me to double check and the rod was too large to fit in the piston. CTR/B16 pistons will fit as the top of the rods in these engines are the same size as LS rods, but 94+GSR/ITR rods are thinner.

Hmm, Ill have to look more into it, cuz I know several people who have used ITR pistons on ls rods. And when i took in mine to get done, I took them some used LS rods and new ITR p73-ao pistons, and picked them up the next day with no problems.And they have worked fine ever since.But ill look into it..-Paul

 

[lsvtec hatch93]

i dont think you can put any Vtec pistons on ls rods. i found that out the hard way. but i bought some aftermarket high compressions pistons and it worked out. also after a while the N-1 sounds like a lawnmower

 

[tnsxsear]

Originally posted by lsvtec hatch93@Apr 15 2003, 02:18 PM
i dont think you can put any Vtec pistons on ls rods. i found that out the hard way. but i bought some aftermarket high compressions pistons and it worked out. also after a while the N-1 sounds like a lawnmower

It can be done, I had them on my first motor. I cant believe some of the ls/vtec people havent heard of this, Ill get pics for you guys so that you all can see what i have....-paul

 

[pills_PMD]

well if they are modified they fit...

 

[lsvtec]

Did the rods change from B18A to B18B? Because my rods are out of a B18A. I am operating under the assumption (and it could be bogus) that the rods in the B18B are the same as the B18A. B16A pistons fit my LS rods fine.

 

[tnsxsear]

hmm not sure, but change of plans, I am now selling the ls rods with the type-r pistons already mated on them with only like 4k miles, I just got some JE 11.5:1 pistons that I got from a car I worked on... yummy 11.5:1 ls/vtec
One more question, is 11.5 still good on pump gas, with ocassional shots of nitrous at the track...Ive never gone past 11:1 -paul

 

[pills_PMD]

yea 11.5:1 is cool on pump gas. get 93 if its available.

 

[lsvtec]

I run 11.5:1 on 91 octane with no problems. I do not use Nitrous.

 

[sLoWgUy]

Whats a z10 girdle?

 

[phunky.buddha]

Originally posted by sLoWgUy@May 8 2003, 11:19 AM
Whats a z10 girdle?

http://www.z10eng.com

It stabilizes your crank so you can rev higher more safely.

 

[phrasathane]

i stated this in another thread.
to get the ITR pistons to fit LS rods. mill 0.7mm to 1mm off both ends of the small end of the ls rods.

 

[lsvtec]

Thank you, we know that.