LS RX8 Build - Project Doritno

[Easter Bunny]

is that just a replacement center section for the axles? so you just rebuild the explorer ones and are good to go? thats pretty slick if that is the case

 

[JohnnyTightlips]

is that just a replacement center section for the axles? so you just rebuild the explorer ones and are good to go? thats pretty slick if that is the case

You rebuild the axles , rx8 on the hub side and explorer on the diff side. This is the reason I needed the axles from the junk yard too. They have a lifetime warranty on their cv axles so if it brakes they send you a new center section. You also need to weld their section to the existing subframe which also stiffens up the subframe a lot. This will allow be to get rid of the PPF "power plant frame" that connects the trans to the diff. I will need to fab a trans mount but that does not look too hard. I could in theory run true dual exhaust if I wanted with the new space u there. It is a pretty cool setup and should handle way more power than I will be making. The have really nice instructions. http://www.hottubsippinbubbly.com/Ronin/RX888install.pdf

 

[tstebbins23]

Update:

Fuel System: Complete
Parts

• 5/16" (8mm) x 6" (150mm) In Tank Submersible Fuel Corrugated Flexible Hose Line for Fuel Pump Assembly E-85 Safe Compatible
• Aeromotive 13129 Regulator, EFI Bypass, Adjustable (2) -6 inlets, (1) -6 bypass
• EVIL ENERGY 6AN PTFE Fuel Line Kit,E85 Nylon Braided Fuel Hose 20FT AN6 PTFE Fuel Line Hose(5/16Inch ID)
• EVIL ENERGY 6AN Male Flare Bulkhead to 5/16 Hose Barb Fuel Tank Fitting Adapter Aluminum, Black
• I also used random other fittings "you can figure it out"

I put the fitting on the top hat but after the fact I should have put it on the other side as the fittings are too tall and I had to rotate it to get it to not hit the seat cover. Works fine but just a heads up.
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I trimmed the return hose a bit to get it into the basket and it seems to like it as I was able to set 58 psi and it is stable.
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This is pure overkill but I had this piece of AL sitting around and it worked to mount the FPR. You could probably hang the motor off this mount.
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It's all back together and no leaks.
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Alternator:
When the car first started up the alternator was working but after a few weeks it would do this weird thing where it would only work after I revved the car to 2k and then it was fine. Well a few weeks later it just stopped charging. I ordered and ebay special and it seems to work great. It has enough amps to run 3 of these cars so I should be fine.

Parts

• BLACK ALTERNATOR HIGH OUTPUT 300AMP FOR CHEVROLET SUBURBAN TAHOE 1500HD 2500HD seller: high-quality-parts

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Intake:

Parts

• Airaid AIR-100-400 UBI (U-Build-It) Intake Kit
• 2@ Tandefio 90 Degree 4 Ply Elbow Coupler Length Silicone Hose 0.2 Inches/ 5 mm Thickness Silicone Pipe Intake Pipe with T Bolt Clamps for Turbo Intercooler Intake Piping (4 Inch)
• Some random Spectre air filter "idk it was in a box of crap I had"
• Maybe this? Spectre Universal Clamp-On Air Filter: High Performance, Washable Filter: Round Tapered; 3 in/3.5 in/4 in Flange ID; 6.719 in (171 mm) Height; 6 in (152 mm) Base; 4.75 in (121 mm) Top, SPE-8131, Black

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I was able to make a heat shield to keep the radiator/motor/oil cooler heat away from the intake. I also got the IAT sensor close to the filter. Car seems happy and the Intake Air Temps are more accurate to what the engine is actually seeing now and not just heat soak.
View attachment 33137
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Bonus:

Used some license plates to make a heatshield where the fuel and brake lines get closer to the exhaust.
View attachment 33133

Great information, I am in the beginning phase of LS swapping our RX8 and your build info has been a huge help. For the fuel lines, did you hook up the blue vapor line and if so, where did you connect it to the LS setup? I thought I was going to get away with just upgrading the fuel pump and using the stock RX8 fuel lines, but all threads lead to running new lines and adding a regulator.

 

[JohnnyTightlips]

I believe I just cut it further back and capped off the vapor line. I haven't noticed any issues. I used the RX8 oem main feed line as a return line and did my own ptfe 6an line for the feed from the pump to the regulator. I also thought about keeping it stock lines but it was really not crazy spendy to do the ptfe lines and a regulator and at the end of the day it is the right way to do it.