1999 FRC Pro Mod Style TT Kit - Page 3 - CorvetteForum - Chevrolet Corvette Forum Discussion



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1999 FRC Pro Mod Style TT Kit

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Old 09-13-2017, 02:19 PM   #41
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The driver's side was completed the same day. This went much quicker than anticipated.





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Old 09-13-2017, 02:42 PM   #42
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Default Filters

The air filters showed up and were test fitted. There was just barely enough room on the driver side but it fits. If you remember, one of the goals was to run filters so this meant another item was checked off on the build.





It was now August 3, 2017 and you can see that for at least a month a major item was getting taken care of each weekend. The build has been fun because new things are being created and learned and it's usually for just a few hours each weekend.
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Old 09-13-2017, 06:17 PM   #43
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The intercooler showed up around August 1st prior to fitting the air filters and I was really anxious to get it mounted. I sent Jon some measurements for the brackets where they would mount to the radiator cradle and he fabbed them from spare aluminum and shipped them over. He nailed the measurements and August 5th I went to work on setting the intercooler in place and locating the mounts. It was time to get some practice on welding aluminum.





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Old 09-13-2017, 06:21 PM   #44
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I thought the exhaust manifolds and up-pipes may be next so I started to work on the merge from the T4 flange to the exhaust manifold.

The 2.5" 304 SS V-bands and flex bellow with inner liners arrived from Ace Race Parts




Driver side T4 transition - This was a little tricky due to the angle of the T4 flange



It looked like the 321 SS bends for the up-pipes were going to be delayed from Plane Exhaust so I decided to switch back to aluminum.
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Old 09-13-2017, 06:35 PM   #45
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With the passenger side turbo mounted, there was a starting point so now I needed an ending point at the intercooler to begin routing the 2.5" aluminum piping.


Fitting the cast 90 degree elbow - August 12, 2017




Piping from the compressor around the frame and through the cradle




The engine arrived and I headed off for a vacation.

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Old 09-14-2017, 11:15 PM   #46
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I'm Liking it a lot Ben Looking good.
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Old 09-15-2017, 10:45 AM   #47
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Quote:
Originally Posted by inspector12 View Post
I'm Liking it a lot Ben Looking good.
Thanks, Jeff. Something like this really simplifies things for us as vette owners without taking things to the extreme. I realize there is a big oval hole in each fender, but otherwise the car could appear stock.

Some of the observed benefits:
  • Factory style exhaust manifolds are affordable and cut down on fabrication
  • Minimal exhaust tubing saves weight and reduces backpressure
  • Lack of exhaust tubing in tunnel should cut down on cabin heat
  • Turbos are behind the front tires for better F/R weight bias
  • Increased room and less heat in the engine compartment
  • A/C is still functional
Some things still to figure out:
  • Will it be too loud for street driving?
  • Will the ZL1 exhaust manifolds flow enough to not be a restriction?
  • Are the shorty 4 inch air filters large enough to supply the 68mm compressor?
  • Will the A/C compressor be compatible with the front engine plate
  • Will ground clearance still be adequate?

Anything else to consider?
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Old 09-15-2017, 11:42 AM   #48
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Default Block

Here's the actual new block. It showed up on August 14th and then I basically was unable to move forward with it for 3 weeks due to vacation, a hurricane, and then being sent out of town for work.

Highlights:
  • CNC and Machine Work by Race Engine Development
  • LS2 Block
  • Darton M.I.D. sleeves
  • 4.125 " Bore
  • 9.220" Deck Height
  • 1/2" Head Studs
  • Decked and Torque Plate Honed

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Old 09-15-2017, 12:34 PM   #49
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At some point after vacation and before taking in some house guests due to flooding, I was able to complete the discharge piping for the passenger side. It ends up being two complete pieces and is bead rolled on each end. Only three couplers are required.





This piece got me in trouble with the neighbors on a Sunday night during the storm. It takes multiple passes with the grinder to sneak up on that last fit.







Passenger Cold Side Done - 8/28/2017 - I'll have to snap another pic because the piping actually sits up higher where it passes over the tie rod end up front. I think I was still in the mock up stage at this point.
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Old 09-16-2017, 02:57 AM   #50
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Do you think there would be room to run ducting and move the filters to the front of the car like Hurron dose?

Also is there room to do a normal downpipe under the turbo and back into the tunnel?

Just thinking you could tackle some bad things with fender mount kits, notably filter location / getting cold air to them.
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Old 09-16-2017, 07:05 PM   #51
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Looking good. Keep at it.
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Old 09-16-2017, 09:13 PM   #52
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Quote:
Originally Posted by Turbo-Geist View Post

The engine arrived and I headed off for a vacation.

Should win every event you enter in with that.
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Old 09-16-2017, 10:37 PM   #53
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I don't think there will be an issue with a motor plate cause you can trim it to keep clearance sufficient. Block looks nice though!
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Old 09-18-2017, 09:22 AM   #54
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Quote:
Originally Posted by Capthuff View Post
Looking good. Keep at it.
Thanks, little by little. Hopefully no more 3 week delays.

Quote:
Originally Posted by SBCGENII View Post
Should win every event you enter in with that.
I know. Probably have to increase the spring rate on the coilovers so the tires don't rub.

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I don't think there will be an issue with a motor plate cause you can trim it to keep clearance sufficient. Block looks nice though!
Good to know. Thanks Jeff.
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Old 09-18-2017, 09:49 AM   #55
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Quote:
Originally Posted by chuntington101 View Post
Do you think there would be room to run ducting and move the filters to the front of the car like Hurron dose?

Also is there room to do a normal downpipe under the turbo and back into the tunnel?

Just thinking you could tackle some bad things with fender mount kits, notably filter location / getting cold air to them.
It's all about what kind of power you are looking to make and what size turbos you are trying to fit. Fitting 62/65s in this location would be much easier. These 6870 turbos have a 2.5" discharge and 4" inlet. I didn't want piping snaking through the engine compartment and over the valve covers and radiator. The passenger side would be very doable depending on where you choose to mount the ECM. On the driver side you have to contend with the fender, the brake booster, the master clutch cylinder and reservoir. It would take some creativity or sacrifices to get a 4" pipe through there on the driver side. I'm looking more for simplicity and will let the intercooler do the work of cooling the air charge.

There is room to do a normal downpipe depending on your downpipe size and how you choose to route the piping. There is a space from in front of the floor board to the cradle where the frame curves upward. As long as the piping can fit in this opening and not hang below the horizontal portion of the frame or the cradle, you are free to experiment. However, there is limited width. I didn't want to cut the fender up for the discharge piping so I'm routing (2) - 2.5" pipes in this area. One from the exhaust manifold to the turbine flange and one from the compressor discharge to the intercooler. UPP routes their up pipe and 3" downpipe in through this same area. Other options are cutting a hole in the frame and passing the downpipe through, passing the up-pipe through the frame, or routing the discharge piping through the frame and to the intercooler. Things can be as simple or complex as someone wants to make them.

Here are a couple of other custom kits that show the possibilities.

This kit has deleted most of the stuff under the hood to simplify pipe routing.



This kit shows the space where the piping has to route to prevent ground clearance issues.
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Old 09-18-2017, 10:12 AM   #56
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Old 09-18-2017, 10:20 AM   #57
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Decent progress this weekend.

Driver side elbow fitted to intercooler



Fitting 2.5" aluminum charge piping for driver side using silicone couplers as a helping hand



Getting ready to make some cuts

Last edited by Turbo-Geist; 09-18-2017 at 10:20 AM.
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Old 09-18-2017, 10:26 AM   #58
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Yesterday evening I was able to get it routed under the frame and through the cradle.




Here's a decent view showing the routing. I still need to tack the last joint near the motor mount and hope this can be installed as one piece. If so, it will end up like the PS as just two pieces with a coupler in the middle near the frame/upper a-arm.
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Old 09-18-2017, 10:35 AM   #59
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Thanks. Hopefully it doesn't take too long. I'm trying to find a shop in Texas that can handle fitting the billet main caps to the block. It's proving to be harder than I thought.
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Old 09-18-2017, 02:15 PM   #60
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Have you tried MVP Z06 on here? Mike built my motor but I don't know if he has any experience with the billet mains.
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