All tubing is 3" 304 SS, I ended up getting good deals on it all so I didn't spend too much more than mild steel. Just spent quite a bit more time getting the joints nicer and TIG welding with back purging. Jerico 4sp Trans is spaced up 0.5" to help with clearance to the pipe that runs under - after looking at these pics it makes me think that wasn't necessary.

Ground clearance is as good as it gets, tucked up higher than the frame rails. Nice for lowering the car an extreme amount if I want to in the future.


The hole through the rocker, lined with 304 SS

Spintech 3.5" muffler with the inlet cap chopped of and a new one fabbed up:




Still a few more details to finish up (heat shield under slip yoke, finish tip that exits into the rocker, maybe something else I'm forgetting).

 

looks kinda hillbilly

I want to make it clear to everyone before they post, this is a full on road race car that will be street legal (barely) with lexan windows, jerico dog-ring 4speed, custom aluminum rear axle center, the list is endless. Cutting your rocker panel in half for an exhaust is not wise unless you have the proper reinforcing as this car does. It's a fresh idea and I think it's awesome. I'm excited to see it with the exhaust tip installed and the door closed.

 

I didn't plan on doing this, but I had to notch the frame rail to avoid the slip yoke:


A pic of the completed system out of the car:


Final weight for the complete system ended up at 22 lbs, the muffler itself was 13 lbs before I modified it. The Edelbrock y-pipe and Cat Delete that I took off the car weighed 19 lbs and unfortunately I forgot to weigh the cat-back before I got rid of it. I'm guessing this saved about 30 lbs.

 

moar pics

 

Oh hell yes.

 

Nice clean idea for a track car. Wating for final pics.

 

believe it or not, this will be a street car as well. That's why it still has side windows wipers and lights. (I know you guys haven't seen the car but I have) The Jerico dog-ring 4speed is a perfect trans for grocery getting....

 

I know here in Texas, that exhaust wouldn't pass.

In Texas, you can have side exhaust, but it has to exit behind the side doors.

Looks kinda cool, but I'd hate to smell how much exhaust gets blown in the window, on the road down the road. Or even on a road course. Fine for 1/4 mile or autocross, since those are short runs.

 

Lexan windows don't go up and down, problem solved

 

Nice theory, but there is nothing that says "IF the windows roll down the exhaust must exit behind the doors, otherwise....." So it still wouldn't pass.

 

I know, it was a joke.

 

I don't remember who did the best one I have ever seen, but he's here on the site. His side pipes come out right in front of the rear wheels using NASCAR style boom tubes. His thread is complete with pictures and how he did it. Going to have to look it up unless someone else knows the guys name or has a link to it.

 

That guy has it under the rockers, this has more ground clearance, a lot more!

 

Your talking about Andris...... https://www.thirdgen.org/forums/exha...st-plenty.html

 

I stopped checking back with this thread because I didn't think anyone was interested.

What do you guys want to see?

Car should be leaving for paint tomorrow.

 

NASCAR has side exit on the drivers side. Most of the high end Road Race Cars (ALMS / Lemans / C6R / Rahal/letterman BMW) have side exit, which is my main inspiration for this. And they run 24 hour races.







As long as you're going fast, the exhaust can't come in the windows

 

well you're screwed then....

 

 

Ouch!

 

#1...They are race cars. No need to be street legal nor do they sit still in traffic at red lights & such. IIRC, Even the pace laps are above the typical 55mp street legal speed.

#2...There is no government law telling them what they can cannot do. When heat of the interior of a Le Mans car hits 150 degrees? There are bigger fish to fry......

 

then what about this?

 

Good question. I wonder if any changes were made to it, for US production units. I noticed that in it's first production year, it wasn't available in the US. Wonder if that had something to do with the exhaust & that was changed for the USA imported ones.

Nothing surprises me in cars for the European market. There are brand new cars over there being without without any air bags, without ABS, etc. Only technology they have is fuel injection!

 

....right....

ABS is mandatory for new cars in the EU and all but the cheapest models should have airbags

Do realize that most of the drivers here actually do wear their seat belts

 

If you seen the rest of my car you'd see that comfort isn't a top priority.


No inspections in Michigan… No government law for me


No, the interiors of those cars don't get that hot. Some of them even have AC, not sure of the GT1/2 cars have AC, but I know closed cockpit prototypes do. I'll have a heat shield between the muffler and floor and even the trans and trans tunnel. It will be hotter than a car with carpet, but not that bad. If anything it will be hot because I don't have carpet which has nothing to do with my choice in exhaust routing..

 

For the love of god, don't blow a head gasket or crack your block while sitting next to me in traffic LOL!

 

i wanna hear it!!

 

The car is getting painted right now. You'll have to wait a few weeks....

 

maybe some of us like to smell our exhaust when were at stop lights!

 

I was looking at your pics and notice a torque arm w/ a snubber on the end. Looks like a decouped torque arm, much like the 4th gen one. Did you build it yourself? I was thinking about doing just that.

 

yah he built it himself. I think he combined his own ideas with Unbalanced Engineering's design and made his own. He's not ultra proud of it, but he's impossible to please. The times I've been in the car on-track, I thought it performed flawlessly...

 

my EX didnt
hahaha

 

that is friggin sweet! wish there was an EASY way to do it before the wheel

 

I will run it in texas......... i love it

 

Looks awesome

 

Also side exit exhaust on to the sidewalk side also not legal, been that way for years in the UK I believe.

 

Im pretty sure exhausts here have to reach the rear axle... or something along those lines.

How come you didnt use Long Tubes?

 

Take it to "The Texas Mile" in Oct.

 

Ford trucks had a side exit exhaust in production


$$$. Hawks / Stainless Works are the only acceptable long tubes IMO and they are ~$800. With me being uncertain if I'm going to stay Gen I or go LSX long term I decided to save the money and get the car on the road with some cheap shorties.

 

I'm not sure if anyone here watched the 24 hours of LeMans this year or not, but one of the Corvette drivers did get CO2 posoning during a long caution (slower speeds). I get a wiff of exhaust smell at times during a stop or whatever but that doesn't bother me near as much as the rattles. This is a street driven race car.

 

maybe it just behind the driver's compartment. Not really sure. Doesn't really matter much for you anyway though.


Hedmans are cheap, and I guess you dont like the 1 and 5/8s primaries? I've seen way too many cars do VERY well with those to worry about that primary size too much.

I have them and no regrets. At the end of the day I got em for $100, they dont hang as low as the Hookers and they actually fit very well. All we had to do was trim a little piece off the A-arm perch. Installing the hookers sounds like a nightmare. Maybe the Stainless Works are better, but thats a lot of money to spend on headers.

Either way I dont think you made the wrong choice, but I think pretty highly of the Hedmans from my experience with them and seeing them on friends cars. They have proably gone up in price these last couple of years though.


Are your Z06 wheels OEM wheels or aftermarket replicas? You know anything about whether the OEM or aftermarket ones are lighter?

 

This thing has to be outta paint by now.............. Where's the pics???

 

In Texas, I believe the rule is that the exhaust just needs to exit behind the door opening, which only gives us a few inches of space to do it in, between the wheel opening & the door edge. But also that it has to exit the side, not under the car body.

 

I dont believe the set up I have seen on US race cars with exhausts cut short and exiting under the body would pass our race scrutineers as I believe there is a general rule from the motorsports body about exhaust having to exit clear from the body not underneath it.

 

I have the Hooker 2210s with the 1 3/4 primaries and they are a nightmare as far as chassis fitment is concerned. I did what I had to do and they fit nicely now, but it meant surgery on the k-member.

He is running OEM Speedline Z06 wheels. They are MUCH lighter than the aftermarkets. The aftermarkets weigh something like 25lbs and I think his are roughly 16lbs.

Do a search for his screen name. There is a thread in the appearance board about road race cars, it is pictured there.

 

I have 3 sets of wheels. 6 OEM 18x10.5 Speedlines that are 19.5 lbs each. 2 Keystone? 18x10.5 that are 21 or 22 lbs each. And 4 AFS 18x9.5 that I have street tires on that weigh 20.5 lbs IIRC. The factory Corvette wheels are by far better, lighter, stronger, not made in China.

 

This is from Waterford in April this year:

 

Are you saying Speedline made the wheels for GM to put on their Z06s? I definitely did not know that...

Sucks that they're lighter... now I gotta find a factory set of them when the aftermarket sets are affordable and available. But all the factory sets I see are black or chrome, I would only get them if I could find them in Comp Gray. Do you know if the black/chrome factory wheels are the same weight or not?


Also, after checking his f-bodymotorsports page where he didnt mention anything about it, do you know if he's using a stock style radiator or does he have a behemoth rad with a giant fan in there? Do you even need fans on road race cars?

 

Yes, Speedline made GM wheels. I think the zo6 also had Alcoa as a supplier but they may be a lb or 2 heavier. All factory wheels where agent color, no black or chrome.

The radiator is a long story that I don't want to get into. The short story is I've had 3 aftermarket rads in the car and they all failed within weeks. I now have the stock rad in the car and it keep the water temps in line at Grattan last weekend with afternoon temps in the 80's. I have one of the dual TPI fans on my car on the pass side. Fans are not needed once you are rolling.

 

I just did some quick googling and you're spot on! Thanks for the info!

 

OK....I highlighted what my questions are about. One person says 16.5lbs, another says 19.5 but also says they are ?far? lighter. Yet only 1-2lbs lighter than the other he lists. Typos? What weight are they?