failed h/c project...
Tech Contributor
Joined: Jul 2002
Posts: 14,950
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From: St. Louis, MO
St. Jude Donor '08
You need the pre-cat 02 sensors in both sides.
I wouldn't personally drive the car down the driveway with no 02's. It could wash down the cylinders with gas and ruin the engine or at least foul the plugs. Probably wouldn't do that, but I wouldn't risk it as it won't run properly with no 02's.
There is a an extra set of wires on the innovate lc-1 which emulate a narrow band so you can splice those into your system, but their instructions are confusing. I ran ran the wrong wires to my wideband the first time I tried.
Personally I just left my front 02 sensors alone and ran my wideband behind my cats in one of those bungs. That's what all the dyno tunes use if you think about it.
I wouldn't personally drive the car down the driveway with no 02's. It could wash down the cylinders with gas and ruin the engine or at least foul the plugs. Probably wouldn't do that, but I wouldn't risk it as it won't run properly with no 02's.
There is a an extra set of wires on the innovate lc-1 which emulate a narrow band so you can splice those into your system, but their instructions are confusing. I ran ran the wrong wires to my wideband the first time I tried.
Personally I just left my front 02 sensors alone and ran my wideband behind my cats in one of those bungs. That's what all the dyno tunes use if you think about it.
Le Mans Master
Joined: May 2011
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From: Tampa FL (formerly Justinjor)
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Joe is right. Don't drive w/o 02 sensors. You're asking for trouble.The front and rear 02s have different plugs, presumably to make sure they're never crossed or plugged in incorrectly.
Get the rfront 02 extensions and do the job right. You can splice, but again, you're asking for trouble. Those wires are probably the single most important in the entire engine and you don't want to risk having the wrong voltage.
Have guys spliced in 02 sensors? Sure, but I think you're asking for trouble if you open that can of worms.
Casper electronics has some really nice 02 extensions in various lengths. They're a little pricier than others, but they use OEM connectors and OEM wiring so there's no worry of voltage spikes or anything else strange happening. I think it was ~$70 for the pair.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Joe is right. Don't drive w/o 02 sensors. You're asking for trouble.The front and rear 02s have different plugs, presumably to make sure they're never crossed or plugged in incorrectly.
Get the rfront 02 extensions and do the job right. You can splice, but again, you're asking for trouble. Those wires are probably the single most important in the entire engine and you don't want to risk having the wrong voltage.
Have guys spliced in 02 sensors? Sure, but I think you're asking for trouble if you open that can of worms.
Casper electronics has some really nice 02 extensions in various lengths. They're a little pricier than others, but they use OEM connectors and OEM wiring so there's no worry of voltage spikes or anything else strange happening. I think it was ~$70 for the pair.
Casper makes OEM quality wiring harnesses. I recommend them too.
Thread Starter
Burning Brakes
Joined: Jan 2010
Posts: 796
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From: Orient Oh
Awww darn well I get the 02 sensors in march 1st... I just ordered the complete set. I wont need the rears because I'm running cat less. Sucks how that is the only thing stopping me to go get it tuned...
Tech Contributor
Joined: Jul 2002
Posts: 14,950
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From: St. Louis, MO
St. Jude Donor '08
A local speed shop might have them?
Thread Starter
Burning Brakes
Joined: Jan 2010
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From: Orient Oh
I have about 8 02 sensors... 4 stock, 4 that came with z06 system I bought. I'm good on those and that's why I didn't mind to splice them up a but 
But yea 02 are very important and especially with larger injectors untuned. Man I just want to take it to the gas station.... It's been about 2-3 months since she last moved 
But yea 02 are very important and especially with larger injectors untuned. Man I just want to take it to the gas station.... It's been about 2-3 months since she last moved
Tech Contributor
Joined: Jul 2002
Posts: 14,950
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From: St. Louis, MO
St. Jude Donor '08
I have about 8 02 sensors... 4 stock, 4 that came with z06 system I bought. I'm good on those and that's why I didn't mind to splice them up a but But yea 02 are very important and especially with larger injectors untuned. Man I just want to take it to the gas station.... It's been about 2-3 months since she last moved
But yea 02 are very important and especially with larger injectors untuned. Man I just want to take it to the gas station.... It's been about 2-3 months since she last moved Does your oil smell like gas? Might want to change it.
I'd suggest you flatbed your car to a tuner, between larger injectors and a cam, it's not going to run worth a darn and is going to be dumping fuel. At a minimum I'd put in my stock injectors to get there and swap back over there. Why did you put larger injectors in? Stock ls2's are good to about 500 rwhp, mine are fine at 472.
Thread Starter
Burning Brakes
Joined: Jan 2010
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From: Orient Oh
I will be getting nitrous soon but the injectors came with the h/c/I swap I done. I had to swap mine because he was returning back to stock. Just 40lb nothing to big but I'm Want to run a 175 shot. I actually plan on installing everything and take it to rpm and let them tackle the tuning. Yea I just did a fresh oil change right before the last start up.
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Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
I will be getting nitrous soon but the injectors came with the h/c/I swap I done. I had to swap mine because he was returning back to stock. Just 40lb nothing to big but I'm Want to run a 175 shot. I actually plan on installing everything and take it to rpm and let them tackle the tuning. Yea I just did a fresh oil change right before the last start up.
Track Junky
Joined: Jun 2007
Posts: 4,074
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From: Orlando Area
Tech Contributor
Dunno how far they are but I'd put in stock injectors to drive anywhere. Having improperly scaled injectors is not good for the car. You can drive a cammed car on a stock tune, it'll get you there, check engine light gleaming in your eye, but it's not smart to drive with bigger injectors that aren't scaled.
Burning Brakes
Joined: Jul 2008
Posts: 923
Likes: 37
From: Green Bay Wisconsin
Typically the valvetrain will get real noisy when the lifters collapse with no oil pressure.
If the motor is otherwise quiet, and you are reasonably confident you put it back together correctly, I would try to put a mechanical gauge on it to verify oil pressure first.
If a mechanical gauge screwed into the motor reads zero... THEN you have a problem.
It could be as simple as a bad sender. They DO go bad pretty regularly.
If the motor is otherwise quiet, and you are reasonably confident you put it back together correctly, I would try to put a mechanical gauge on it to verify oil pressure first.
If a mechanical gauge screwed into the motor reads zero... THEN you have a problem.
It could be as simple as a bad sender. They DO go bad pretty regularly.
Thread Starter
Burning Brakes
Joined: Jan 2010
Posts: 796
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From: Orient Oh
I traded my stock for 40 lb but I can haul my car with my truck to rpm... Truck gets about 16mpg but hauling prob about 10mpg highway. I have a lot of parts coming in this week anyhow. I Really want to start the car up and let it warm up to make sure nothing else goes bad. Before I take it to the tuner. Anybody has extra stock injectors. I'll pay shipping both ways and give you a deposit for you to hold on until you receive them back.
Thread Starter
Burning Brakes
Joined: Jan 2010
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From: Orient Oh
So I started the car up after I finished installing the exhaust to hear how it'll sound but I couldn't just leave it at that. I ended up driving it just to the gas station. Well I go to the gas station and on my way back the damn clutch line blew... I got it home safe without a clutch and got to looking around and found the rubber clutch hose close to the exhaust melted and ruptured.. I wire tied it but that melted and it sat on my exhaust for the 10 mins it was running.. Hmm I see it as a good thing... Now time to get tick master clutch kit
Tech Contributor
Joined: Mar 2003
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From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
With nitrous 175 shot youre looking at 650-700rwtq and will need something beefy. This holds 900rwtq. Its the twin carbon model.
Clutch swaps are labor intensive but easier than a H/C swap on the tech side.
Instructor
Joined: Jul 2010
Posts: 146
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From: Thousand Oaks California
I traded my stock for 40 lb but I can haul my car with my truck to rpm... Truck gets about 16mpg but hauling prob about 10mpg highway. I have a lot of parts coming in this week anyhow. I Really want to start the car up and let it warm up to make sure nothing else goes bad. Before I take it to the tuner. Anybody has extra stock injectors. I'll pay shipping both ways and give you a deposit for you to hold on until you receive them back.
JML
Last edited by Muchtodesign; Mar 3, 2012 at 06:57 PM.
Thread Starter
Burning Brakes
Joined: Jan 2010
Posts: 796
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From: Orient Oh
Don't sweat it and thanks guys. I just hauled it to rpm in Rayleigh, Nc. They're back up in work due to tax returns but they'll be starting on it Wednesday. I'm just having them do the aps clutch line mod and installing my wideband then tuning it. I'm excited!!! They was surprised it fired up right away also 
