I bought a Ls/Vtec engine with the b17 head on it and i paid to get it installed at a import performance shop and i went to go get it dynoed at it only came up on 121 hp with 103.5 torque at 6.9 redline....what could be wrong? Correct me if im wrong but a b18 with a b16 head should be at least over 200 hp...right?


Modified by lsvtecrx at 9:50 PM 7/20/2003

 

now does it have a b17 head or b16 head? It all depends if they just threw it together, or if they actually replaced stuff and did it right...

 

It has the JDM B17 head

 

Don't most LSVTEC's make peak power around 7.9, or 8 grand?

 

i have a pr3 ecu

 

if your ls/vtec is a stock bottom end ls/w vtec head it should run aprox. the same numbers as a stock gsr motor(maybe 160hp, give or take a bit). it takes the high comp vtec pistons and some cams(ITR,CTR) plus 4-1header, good intake, and tuning... to make 200.

a proper spec list, and the rpm you took it up to on the dyno would help!

edit: how was the knock sensor and second o2 taken care of?

 

"i went to go get it dynoed at it only came up on 121 hp with 103.5 torque at 6.9 redline"

There is an answer for speeddave. Also why only 6,900 redline. When my brother in law dynoed his ls/vtec he ran it up to 9K on stock internals. Do you know what kind of pistons you have in the motor? I've seen an ls/vtec with b16a pistons and a stock b16 head put down at least 140 to the wheels. Something doesn't sound right with your setup. Send us a spec list for the motor......

 

what i meant was he could have taken it up to 8000rpm but only made his peak power at 6900.... indicating that something else might be his problem... but i guess by his saying 6900 redline that would be the final rpm he took it too

 

alright...this is the thing, i bought the complete engine from my friends uncle. He had the motor in a 92 teg. He rebuilt the bottom end with all new teg type R internals. When i bought the motor it only had 500 miles. Now there is 4,600 miles and everything is set to 0...like the timing and ignition. He claimed to have 269hp and he ran 13.3 in his teg, that was before someone hit his car. Other than that i cant talk to him till he gets back from Afganistan in sept. This is all i know and what he told me

 

also when i did the swap i had the guys at speedline performance put in the right ecu cuz they told me the ecu they gave me wouldnt give enough fuel to run the DOHC or the vtec, so i dont really know what type ecu there is...i think he told me pr3

alright....i just checked it...its a pr4 91 teg ls manual

 

im really not an ls/vtec expert but those numbers sound horribly wrong to me a set up list would be nice

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lsvtecrx &raquo;</TD></TR><TR><TD CLASS="quote">alright...this is the thing, i bought the complete engine from my friends uncle. He had the motor in a 92 teg. He rebuilt the bottom end with all new teg type R internals. When i bought the motor it only had 500 miles. Now there is 4,600 miles and everything is set to 0...like the timing and ignition. He claimed to have 269hp and he ran 13.3 in his teg, that was before someone hit his car. Other than that i cant talk to him till he gets back from Afganistan in sept. This is all i know and what he told me</TD></TR></TABLE>

all right first thing, there's no way in hell that setup you just mentioned has 269 hp...not even at the crank. with ITR internals, that LS/VTEC is probably rated at around 160-170 depending on bolt ons and engine management. something is wrong with that LS/VTEC setup for sure...at 121 hp and 103 ft. lbs of torque...my STOCK 2000 Civic Si coupe puts down 142.4 wheel horsepower and 105 ft. lbs of torque
oh yea...i dynoed it on a Dynojet...what did you use?

 

Hmm, they put a PR4 on there? Is it modified? Thats for an LS, which means it isn't kicking in the VTEC....

 

That's what I was going to say.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by haggar &raquo;</TD></TR><TR><TD CLASS="quote">Hmm, they put a PR4 on there? Is it modified? Thats for an LS, which means it isn't kicking in the VTEC....</TD></TR></TABLE>

 

alright u stupid bitch, im having problems and i dont care about ur shitty si cuz there just like ever other si...i came up here to see if anyone could help ME or tell me what could be wrong so just go pull that dick out of ur *** and put it in ur mouth so u can shut the hell up!

 

for real its a pr4, i think they did modify it cuz its for a 90 teg, but im pre-obd so i think they modify it...im telling everyone i didnt do the swap my self so i dont know what could be wrong.

Also, i didnt know the specs on the engine and thats what i was told so thats why i got it dynoed.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lsvtecrx &raquo;</TD></TR><TR><TD CLASS="quote"> Correct me if im wrong but a b18 with a b16 head should be at least over 200 hp...right?
</TD></TR></TABLE>

Yeah right.

Slap on a B16 head to an Ls block and fail to tune it and you might see a bit more power than a b16, but not much.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lsvtecrx &raquo;</TD></TR><TR><TD CLASS="quote">alright u stupid bitch, im having problems and i dont care about ur shitty si cuz there just like ever other si...i came up here to see if anyone could help ME or tell me what could be wrong so just go pull that dick out of ur *** and put it in ur mouth so u can shut the hell up!</TD></TR></TABLE>

He's telling you there's something seriously wrong. That's all. No need to flip out like a whiney little crybaby.

269whp would be something like an N/A record. I don't think even the top N/A racers are making much more than that. Most bolton turbo kits put you in the low 200s for hp. So your 'friend's uncle' is definitely lying

Start with the basics. Replace the computer with a VTEC computer and then check to see that the engine's mechanically sound - do a compression test. Is it smoking? Any loss of coolant or oil?

 

A PR4 ecu out of a 1990 Integra was also pre-obd, so while they will plug right up it is definitely not the ecu you want to use. You might want to try to find either a PW0-1989-1991 Civic/CRX SiR or a PR3-1989-1991 Integra XSi/RSi. They are both OBD0 and both were made for VTEC engines. That might help you get started in troubleshooting your engines problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lsvtecrx &raquo;</TD></TR><TR><TD CLASS="quote">alright u stupid bitch, im having problems and i dont care about ur shitty si cuz there just like ever other si...i came up here to see if anyone could help ME or tell me what could be wrong so just go pull that dick out of ur *** and put it in ur mouth so u can shut the hell up!</TD></TR></TABLE>

lsvtecrx, i'm not gonna lash out at you because of your comments regarding my post...and the fact that you called me a "b*tch" and told me to "pull that d*ck out my a** and stick it in my mouth and shut up". i've been called worse. i just wanted to give you some reference as to what kind of whp you should expect from your LS/VTEC setup. i thought if i compared my stock motor to your setup, it would shed some light to the problems you're having. one more thing: YOU'RE USING THE WRONG ECU SPACE CADET!!!

 

temper temper, dont be sad man. he was only tryin to help you out, get a grip.
lay off the roids..

 

alright...i do admit to having a temper and i know when i was wrong and im sorry for lashing out, its just the fact that u were not help me by telling me how better your SI is. my bad, sorry for the rude comments

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lsvtecrx &raquo;</TD></TR><TR><TD CLASS="quote">alright...i do admit to having a temper and i know when i was wrong and im sorry for lashing out, its just the fact that u were not help me by telling me how better your SI is. my bad, sorry for the rude comments</TD></TR></TABLE>

He shows promise.

But anyways, do what Raene said. Make sure the engine has good compression and is well maintained, and then try a B16 ecu

 

I have a v-afc, but thats to run the vtec, and the engine is sound...no smoke or nothing, but the only thing is there is a small leak, but im goin to go get the head torqued cuz i think i broke the motor in

 

What kind of leak? Oil leak? When you say "torqued" do you mean the head bolts? Try getting new ones... you're not supposed to reuse Honda OEM bolts.