my gsr motor has been swapped into my EG and seems to be running fairly shitty. It only has and intake so far but the lowend seems to rev up pretty slowly... almost comparable to my old SOHC motor. It drives nothing like my friend's stock integra gsr. The motor was purchased from a wrecked car and i have no idea what it's been through. it has a drilled oil pan (now plugged) which looks like it's been turbo'd before. i've done all/most tune-up items like plugs, wires, cap, rotor, fluids... and things of that nature... new thermostat and radiator (used to run hot) Also, the vtec doesn't seem to kick that much or at least that noticable of a crossover point. there are no check engine lights and everything seems to be in order except that it feels pretty slow. it doesn't blow any type of smoke to signify a blown gasket or bad rings.... but it feels really restricted... any ideas or advice?

 

a compression test can tell you how good or bad your motor is running

 

As Bommie said. Do a compression check.

 

yea i'll do a compression test when i get around to it. as far as the vtec not being that noticeable that much, what could the problem be there? i mean, i don't really hear a crossover as my friends gsr's do but i do feel a slight surge in power....

 

are u throwing any codes

 

Do you have the IABs hooked up correctly? What ECU are you using?

 

also check your o2 sensor. my car ran like crap after i got it rebuilt my o2 sensor ended up being the cause even though it didn't throw a code.als odo a tune-up just to be safe it could also be bad plugs.if vtec isn't engaging it is either an ecu problem or oil pressure problem (pressure sending unit,vtec sylnoide etc..)


[Modified by hybridxcivic, 3:15 AM 8/23/2001]

 

jared: er... the IABs are on the intake manifold? what or how should they be hooked up?

hybridxcivic: i don't have any codes thrown and i'm using all the o2 sensors and a 95 gsr ecu. the plugs are new as of april... i checked them yesterday and they seem to be kinda white. is that normal or is it running lean or rich? as far as the vtec components, i have a oil pressure gauge (mechanical) installed and it doesn't have any leaks. it is tapped off the oil pressure sensor on the block next to the oil filter. i don't think that could be causing a oil pressure problem. i'm also kinda iffy with the ecu... it is a p72 ecu but bought it used.... coulda got jacked tho... dunno. i'll have to borrow a friend's ecu to test it out to see if it's an ecu problem. as far as the vtec solenoid, how can i test something like that? pull one off my friend?that'd be kinda troublesome... just wish it would run right already...

thanks everyone!!

 

Ya know, I was just thinking about this. Did you wire up the knock sensor in pin D3 and did you swap pin A17 for A20 and add the IAB wire to A17.

Even though the harness plugs in to the EG chassis, you need to change some pins around.

HTH

 

well the knock sensor is hooked up when this guy helped me do my swap. that's the only wire added because my hatchback was an si. i didn't know that there were all these other wires that needed to be swapped and switched around. what are all these other wires?

 

So your Evap vavle isn't hooked up, and the secondary butterflys are probably reversed with the EVAP wiring.

I'll have some wiring diagrams out soon for the 5g with GSR swap.

 

VTEC Solenoid Yellow/Green A4
VTEC Oil Pressure Sensor Blue (passenger side harness) D6
VTEC Ground Black chassis ground
Knock Sensor Red/Blue D3
Evap Purge Power Yellow/Black 12V power (hot in ON or START)
Evap Purge Solenoid Red A20
Secondary Intake Solenoid Pink/Blue A17

 

Hate to tell you man, but that motor probably just had the **** beat out of it. I swapped a b16 in my hx.....now that motor doesn't have much lowend, but it still had plenty more then my stock engine.....with 1.8 liters you should be registering a difference. Get a compression check done.

White plugs...hmm...you could be running lean. You may have sticking valves, intake vacume leak, too much ignition advance. I hope it is none of the above.


[Modified by HXMan, 12:04 PM 8/26/2001]

 

well, if the oil pan was tapped, then did you ever think that they might have put low copm. pistons in to it. If they did, then I guarantee you that the motor will wind up very slow.

 

Or.... If it was turbo'd... The pistons may have been changed to an 8.5:1 piston which is almost 2 points less than stock. What exactly is it doing or not doing?

 

b18c-ej1: what exactly does this EVAP valve do? i assume it works in conjunction with the secondary butterflies when the vtec kicks in? so if what u'r suggesting is true(that the evap isn't hooked up), then could that be the reason that i don't hear the vtec crossing over that loudly? i spoke with a friend who done a bunch of swaps and worked with b18's and he says that u can't really hear it click cuz i'm running fairly stock. but then again my housemate's stock 99 gsr (AEM intake only) has a very pronounced vtec crossover point whereas u hear and feel a surge of power. hope u can get those wire diags for me, thanks!

fowler: where do i apply this list of pinouts to? the plug going into the ecu?

hxman: was u'r b16 boosted prior to being swapped in u'r car? i did notice that the timing was advanced when i got it and i just recently changed it back to stock just to test it out... kinda feels the same. what would cause an intake vacuum leak? like blown gaskets or like throttle plate not closing all the way???

mrdx: well it's kinda funny to tell with this motor, firstly the drilled oil pan almost certainly says that it was turbo'd. then again the timing was advanced, aren't turbo'd motors suppose to be retarded? so i dunno if the previous guy was a idiot or if he went turbo, took it off and ran all motor again. as far as pistons being swapped for lower compression, i wouldn't know unless i pulled the motor apart. so far the car seems to berunning good with no engine codes, except when pushed it seems to wing up kinda slow. tracked it with an intake and aftermarket cat with everything else stock and ran high 15's. so that just doesn't seem too right to me at all. there was either serious issues with it or something just wasn't hooked up right. the vtec also seems to not function as compared to other gsr's. so yea... that's what it's doing in a nutshell.

 

ok me again, i was reading an article online bout swapping a gsr into an EG and now i know what u'r talking about with the IAB wires. that source said that the pinout to the IAB could to switched from pin A20 into A17. so i'm assuming that i would just pull A20 out plug into A17. is there anything in A17 right now? if so, do i just pull it and leave it hanging? maybe the guy that did my swap did not know or forgot to do that. u mentioned in u'r previous post about doing the above and then add the IAB to A17? i'm a little confused about that. i thought A20 was already the IAB wire and i'm taking A20 out and sticking it into A17.

also, i'm confused on how to look at the 3 plugs on the harness going into the ecu. which one is A and D and so on and so forth? i was looking at the ETM and it doesn't seem to say which of the 3 plugs was what.

thanks for being patient and helpful... help is very much appreciated!

 

Buy a helms dude. It'll answer all your q's. http://www.helminc.com/helm/homepage.asp

 

firstly, i do have the helms and it seems to be conflicting with a few diagrams shown here:

http://hybrid.honda-perf.org/tech/info.html

the diagrams in the helms ETM show the plugs but with the numbering of pins counting across and the diagram shows them counting up-down and so forth. so i dunno what to believe. anyone?

 

No, mine wasn't. I just can't think of many reasons besides a turbo to tap the oil pan. And you are right about the ways to have an intake vacuum leak.

 

im not sure if IABs are the butterfly valves. but if your butterflies are not hooked up then you loose some lowend torque.

from what you say it sounds exactly like your butterflies aren't hooked up since you have less low end torque....i dont know what else to tell you but find someone who can hook up the wires for the butterflies.

these are actually a second set of runners in the intake manifold that engage at arund 5800 rpms. that isn't eactly on the low end but. see if that opens any doors.