Goopy performance turned me on to it. We where talking about what I planned to do with this build and I was explaining that the BNR Stage 4 really didn't build boost until the end of the power band. He asked do you want to know how to fix that and I replied "Porting". He said that the porting would help but the best thing to do is throw N/A rotors in it and the turbo would scream.

I have not even programmed the twin scroll actuator and the car builds boost instantly with minimal lag. If you look at the rotors in the Turbo motors between the S4 and S5 motors they jumped from 8.4:1 to 9:1. The N/A rotors for the S4 are 9.5:1 and so long as you stay in the realm of the S4 internals you can use N/A rotors with your existing counterweight and flywheel. If you can shop them out one at a time and get matching weight stamps you can safely rev a tad bit higher. I plan on pushing 18psi on them with pump gas.

 

Awesome build, reminds me of mine only everything on your car is red haha. This car is going to a quick !

 

Awesome build!

 

Well I have not had any luck. The POS Walbro seized up on me a few weeks ago with low low hours of use on it. So I have bought some necessities. A new Walbro 255, a Optima red top battery a new alternator and the big time, a rotary works v-mount kit. The build is going to take a tad bit longer than I thought. I will keep you all posted on the progress once parts start to show up.

 

I hate it when things go wrong...but its always happens in a build. Hope you get it worked out.

 

great job that motor looks beautiful

 

Sweet build!

 

Your work is really impressive. Great job!

 

Thank you for all of the compliments, they are reinforcing. I have made some real progress since my last post. The Rotary-Works v-mount kit arrived today and I have some issues with it. All around a decent kit for the price, though it was missing all of the plumbing that you need to completely install it. Aside from the trimming and slotting that was required to get everything to line up the fit up installation only took two hours. The machine work was a little shabby and the radiator will have to be modified to relocate the lower radiator neck so that it is not the first thing to hit the road. As to be expected with any v-mount there will be a lot of modification to the car to make it work. The old radiator mounts have to go, I hammered them out of the way for the moment. The oil cooler lines will have to be custom built, I may just buy a better cooler with the lines made for the kit from rotary works. Now for the pics...

 

 

Multipost edit

 

Keep it coming!

 

More parts have been streaming in, here are some updates. I still have some painting to do so the colors are a bit mismatched at the moment.

 

curious too see what the na rotors do, good work

 

awesome build

 

Any pictures of your lower radiator hose routing?

 

Wowow, awesome stuff, just scrolling through the pics is inspirational. Great work.

 

Ok the lower radiator hose is going to be changed this week. I am going to weld up an aluminum tube and use couplings like the intake plumbing. I finished the fan install, re-plumbed the fuel system and added a regulator gauge and made up the oil cooler lines. I lack a 16x1.5mm to -10an adapter and the lower radiator pipe with heater hose t-fitting. Enjoy.

 

Overall, not a bad weekend

 

Very tasteful mods nice! love the V-mount setup.

 

I am really digging it.. I am addicted. The next test drive is going to be intense.

 

I may move the fin down a few inches and change it completely. I found a neat aluminum fin that is more sexy.

 

I will be welding them out this week, being as how it is the suction hose and how long it is I decided to use a solid pipe to avoid complications. It also lets me keep the heater

 

I finally took her out for a drive today it was pure satisfaction. I pushed the boost until 20 psi before I ran out of injector. I logged 102f intake temp on the intercooler. Second gear was over with in a matter of seconds and my adrenalin gland squeezed off. I added a vent to the front clip devoted to the oil cooler and also put a fan on the intercooler. I did not have time to install the carbon fiber sunroof panel as i am confused on how it works with the oem gasket. Enjoy

 

Here is what the idle sounds like. Nice muffled brap brap Soon I can get some road vids, she gets quite loud at 18psi.