The Corvette Mechanic - The Performance site

Track pipe question.

froggy47 — Sun, 19 May 2013 17:33:03 GMT

I am thinking of having a shop make a track pipe from the stock exhaust header to the tail pipe/muffler section. Eliminate the cats and maybe replace with resonators.

1) Will I need the rear 02 "eliminators", I assume yes. How does that work, just plug them in?

2) Does the car NEED to be tuned, I'd rather not touch the tune as the pipe will be in and out several times a year, I don't want to pay to get the tune reversed & reinstalled every time. I don't care if I leave a few ponies on the table.

Will it run well without the tune option? Just cat elimination?

3) I don't want it to be much louder if any (hence the resonators). Is there a way to attenuate the sound if it turns out too loud? Some tracks ck sound now, is why.

Goal is to pick up some power without going overboard. My muffler guy can put this together for 200-300 bucks I believe.

Just post if you have some experience with this, thanks.

TheCorvetteMechanic.com Podcast #90

TheCorvetteMechanic.com — Sun, 19 May 2013 03:09:42 GMT

Podcast #90

Length: 23:26

Jonathan starts out by talking about how he has changed the Mass Air-Flow Sensor (MAF) in his C6 Corvette and why he did and during the conversation Paul tells us about the wide band oxygen sensors that are going to be in the C7 Corvette. Paul then gives some of the dates and places he will be at over the next few months. The guys do some general chit chat. And we talk about the announcement that the 2014 Corvette is going to be the Indianapolis 500 Pace car.

ASR ABS Lights on after 20 mins

Frank — Sun, 19 May 2013 00:28:56 GMT

Hi all, I have a 1993 Convertible which is giving me fits. This all started after I had it worked on. New Opti/Water pump/Wires. After driving for 20 mins or so the Service ABS and Service ASR lights both come on and stay on. They always clear after a restart. Also at random times all the lights in the DIC pertaining to either ABS or ASR all come on at once for maybe a second and go out. Also if I have the cruise control on, it will disconnect the cruise when this happens as well. Other than that the cars runs great with no other issues, but I sure would like to get rid of this one last gremlin. Any thoughts? I appreciate any and all thoughts. Thanks Frank

Viper retakes fastest Laguna Production Laptime, BUT...

steveb01z06 — Fri, 17 May 2013 20:23:55 GMT

There was a lot of gloating on Vette websites when the ZR1 spanked the 2014 Viper by 2 seconds at Laguna Seca. It was such a huge margin that I thought surely there was something wrong with the Viper.

Apparently not: Ralph Gilles, Viper head engineer, was so incensed by this drubbing that he actually authorized a new version of the Viper called the TA for "Time Attack" to counterattack according to an article in Motortrend. The result was a lap time that beat the ZR1 by less than a tenth of a second. To be truly fair, the ZR1 should have been there to defend itself since environmental conditions can make a big difference.

I would have to think that this is all really flattering to the Corvette group. I wonder if they will bother to respond or wait for a C7 variant to do the job.

Interesting Story on Ford's EcoBoost Engine

Donna_and_John — Wed, 15 May 2013 20:58:41 GMT

http://money.msn.com/business-news/a...14&id=16478708

Based on the article, it doesn't necessarily sound like a wide-spread problem. However, it kind of does make one go hmmm....

DIC buttons not working

Antjr — Wed, 15 May 2013 12:04:07 GMT

Hello, I have a '97 c5 corvette auto with 120k miles. For some odd reason I can't pull any codes or check my oil percentage or do anything with the corresponding buttons on my DIC. I have tried unplugging my battery hoping something resets but fail. I also tried cleaning the buttons and making sure the buttons weren't jammed. When I try to press a button nothing happens!!! Any ideas or suggestions is appreciated thanks

Am I Clairvoyant?

steveb01z06 — Wed, 15 May 2013 01:28:28 GMT

So I've been pushing for a track special with a long list of deletes to get the weight down and simplicity up. My ideas have been largely ignored or ridiculed on most Corvette forums.

Have you seen what they plan for the Camaro Z/28? Try radio and air conditioning delete, light rear seat and battery, 3.91 rear gear, and a bunch of sound deadening removal for a weight reductio9n of 300 pounds!

Is the Corvette next? I hope so.

TheCorvetteMechanic.com Podcast #89

TheCorvetteMechanic.com — Sun, 12 May 2013 01:49:09 GMT

Podcast #89

Length: 13:01

We start off talking a little bit about the vehicles that are being used to bench mark the C7 Corvette ZR1 by GM. Then we have a quick talk about the new Silverado V6 motor which is very similar to the new LT1 motor that is going in the C7 corvette. We talk a little bit about propane and natural gas being used in cars.

Well Equipped Squad Car

Donna_and_John — Sun, 12 May 2013 00:32:58 GMT

Now, this is what I call a well equipped patrol unit ;) ;) That's 300 dozen Krispy Kreme donuts in the back of a Durango...

Attached Images

Cop Donuts.jpg‎ (13.6 KB)

2013 Humm.

mcutro — Fri, 10 May 2013 00:22:33 GMT

My new 2013 coupe has intermittent very slight hum coming from right side. Had it from day i got it. Has 800 miles on it. Wheel Bearings good. Not bad enough to have dealer start ripping things apart to find. Tire noise? Wind noise? Anyone have any same problem? Suggestions? Will it work itself out after a couple of thousand miles? Should I have dealer look further or live with it? Don't like anyone touching my car.

Engine issues

Willhorner76 — Tue, 07 May 2013 01:18:58 GMT

So, My mechanic informed me a few days ago that the engine on my C4 1995 corvette is hooped. He found some metal shaving in the oil. In a panic I started to look for a newer LT1 Engine. I found a fresh lt1, full rebuild, no oil pan or oil sending unit, or intake, and no water pump, opti-spark, ect, ect. anyway the question I have now is how can i make this work without loosing my shirt, is it a simple cam swap, or maybe some wiring.....I don't know....help please

Thanks in advance

TheCorvetteMechanic.com Podcast #88

TheCorvetteMechanic.com — Mon, 06 May 2013 01:31:42 GMT

Podcast #88

Length: 38:43

We start off talking about the pricing that was released for the C7 Corvette. Then Paul and Rob talk about the Corvette Bash they attended in Bowling Green Kentucy. Paul gives us some information about the new e-differential in the C7 Corvette and we talk about the new competition seats.

Rear Axle Nut Repair 2008 Z06 - work in progress...

mad-axeman — Thu, 02 May 2013 20:19:59 GMT

Hey everyone,

After speaking with Paul at the Museum Bash this week, it was decided that I needed to replace the rear axle nuts to alleviate a pinging noise that I frequently hear coming from driver's side rear wheel area. Paul provided me with detailed instructions on the process so I could do the work myself. A couple of thoughts arose while contemplating the job. Specifically, I paid for GMPP, and would like to use it if at all possible, if that would save me some cash. Additionally, I don't have any of the requisite tools for getting under my car at this time. Now my first question is, would that work even be covered under GMPP? Or is that considered normal wear and tear, even though there is a TSB on the issue?

I researched locally, and did find a near-by dealer with World Class Certified Techs - the negative is that it is the same dealer that performed my 5 hour oil change. I spoke to the Service Manager there, however, and he assured me that his group was more than qualified, and even stated that he would have those same techs do my future oil changes versus the kids that screwed up my first one. I am intrigued by the idea of having a knowledgeable tech that I can trust, close by, as well. So I may go that route - still deciding. Any feedback would be welcome.

BTW, Paul, I was doing some work on my stereo yesterday, and today, the car wouldn't start. Dead battery. Hmmm, maybe I should have listened to you immediately when you instantly realized it was dying, and suggested replacement! :) Well it's done now, and starts much faster. To fill the rest of you in, Paul noticed the battery was weak when troubleshooting something else. My g/f said he commented immediately. Man, what a pro!!

I'll keep you all posted on the wheel noise as things develop. Take care for now everyone,
Stu

Dead Odometer in my '88 coupe

JimB — Wed, 01 May 2013 10:23:03 GMT

Hi All,
The odometer died recently on my '88 coupe. After researching posts covering the problem, purchased and installed a used odometer motor off ebay. Unfortunately that didn't fix the problem. On the second attempt I bought a used odometer and motor assembly, installed it but still no luck. My trip odometer is working just fine. Anyone have suggestions on what to trouble shoot next before spending more $$ on changing out parts?
Is there a way to test the odometer motor to see if it's any good? The shaft on the original motor spun freely by hand, the used motor would not spin. I didn't take the replacement assembly apart to see if the shaft on the 3rd motor spun or not.
Thanks,

GM C7 videos

Poltergeist — Tue, 30 Apr 2013 01:55:10 GMT