FD LS3 Race Car Build (KingKyle)

[digitalsolo]

Sure they do. They give you the confidence that if you have a coil break you wont lose the motor.

The second spring will continue to hold the valve up and give you time to find it. Without that dual spring, if the single spring breaks, the valve falls into the cylinder and violence insues.

Wow... i'll ask my shop to put dual springs in then... we dont want violence.

[digitalsolo]

kyle - more weight savings?

New! We are an exclusive dealer for StopTech's exciting new Carbon Ceramic Brake System (CCBS). Most StopTech 4-wheel brake kits may be optionally equipped with these exotic and lightweight carbon ceramic rotors. Significantly lighter than cast iron, these rotors can shave as much as 80 pounds of rotating weight from your vehicle, dramatically improving your car's handling, acceleration and suspension compliance. Better heat capacity, resistance to cracking and oxidation, and improved response in heavy rain than existing ceramic brake options, such as the Porsche PCCB system. These rotors also last far longer than anything else out there. Call us for details.

Wow... I know Brembo offers this type of rotor but they are $1,000 per rotor. Any idea on price? that weight savings sure makes it appealing. I would say $350 per rotor would be my cutoff point

[digitalsolo]

Kyle,
Is there any reason you haven't tried the Granny Speed Shop Speed Glass Molded Lexan Windows?
Available individually or in sets. Save approx 100lbs by installing the complete set.
.125" windshield........................................ 340.00
.093" rear hatch........................................325.0 0
.093" right door window..............................120.00
.093" left door window................................120.00
complete set of all the above.......................850.00/set
http://members.tripod.com/~grannys/speedglass.html
Also, I saw this referring to LS2 GTO exhaust:
1 7/8" primaries are designed for cars with aftermarket camshaft and heads, that will be shifting up in the higher rpm ranges. For stroker engines, these headers are the only way to go.
Considering you have more displacement, a hawt cam, ported heads, and revving it out more for RR, this seems like a good choice.
Moreover, the 1 7/8" headers available from JTR are longtube, which should make even more power. For those of you wondering, they also offer them with ceramic coating now for us who plan to DD

Thanks for the post. I've actually found a few places that sell lexan windows specifically for the rx7. How did you come up with the approximate weight savings of 100lbs? I wont be needing the side windows because I dont run any. I figured I would save 10lbs for the front windshield and 10-15 for the rear hatch window. Have you weighed them compared to stock? I'd be very interested.

On the exhaust, i'm not really running an exhaust. I currently have the hinson headers with the Y-pipe and thats it. What I'm considering is doing the JTR headers like you said for more power... then keeping the exhaust separate and running them to each side of the car. I really like how small blocks sound with the exhaust kept separate I would also Def jet hot coat them. I'm beginning to cook inside the car after 10 min.

Thanks for all the info... let me know if you have any numbers on the lexan savings.

[digitalsolo]

Katorx7,

I have a FC/LS2 road racer. Would you post a step by step on the Lexan install for windshield and hatch? I would rather not have the center post.

Many Thanks!

Bob
Sorry for the hijack Kyle

No problem man... BTW- I had a window guy come to my house like they would if you needed a glass windshield and he did my last lexan windshield just like any other... real easy.

Everything in italics up there on the options and weights is quoted from Grannys Speed Shop. These pieces are specifically made for the 93-95 FD RX7. You can just not get the side windows if you wish. However, on my road race car I kept them for the pits/transporting in case of rain.

By "exhaust", I meant the headers, sorry for the confusion. I understand a race exhaust setup, and figured you could just get a Y-pipe or duals made from the headers back. And as for coating, the ceramic coating from JTR will insulate them enough to keep cabin temps down some, so you wouldn't need to send them to Jet Hot. Maybe try installing some thermal padding in the trans tunnel too.

You probably know this, but just to make sure you keep representing V8RX7's to the fullest, if you run "true duals", you would want an H-pipe (aka crossover pipe) from what I understand, otherwise you'll lose power compared to the single exit exhaust setup.

Thanks for the heads up. I didnt know the motor made less power when you keep the banks separate. Here is the question of the day. How does the C6R sound like it does? I'm pretty sure they keep the banks separate. I remember seeing the diagram in Race car Engineering mag. I figured thats what they did and thats why it sounds so freaking bad ass. YouTube - Corvette C6R

My fav race car of all time....