RB26 GTR POWERED S15 SILVIA

So episode two of the S15 build and today we're doing the fabrication. I'm also going to show you guys the exhaust manifold that I designed and built which is equal length and makes an RB sound a hell of a lot more unique than compared to what other manifolds are out there on the market. To begin the episode we've got to go visit our boy at Total Nissan to go pick up some fresh headlights. Now these were purchased at a pretty good price because the corners are slightly cracked on it but they don't let any water or moisture in yet. So they're on the car, following that we had to remove the fiberglass kit which you guys previously saw and we fitted the front bumper that we were supposed to use to be able to mock up the intercooler and make sure nothing interferes. So the intercooler we're using is a Fenix three inch universal intercooler and the radiator that we're going to be using is a Fenix tucked rad for an S14 S15 and we're just using a 16 inch SPAL fan to be able to make everything work. It's a super tight clearance but the car stays cool so for now it's all good. So prior to this I'd never really fabricated anything myself, figured I'd give it a go because I already had a little bit of equipment laying around such as a bandsaw, linisher and a MIG welder. Everything is TIG welded properly but I figured you know what let me mock everything up myself and I'll just tack it with the MIG. So I've got some stainless steel wire and I think I've got the correct gas to be able to tack. So I chopped everything up, tacked it together which included the dump pipe along with the wastegates. I fiddled around with a little bit of the intercooler piping as well before everything was sent over to Wanted Motorsport for the final welding. It took a little bit of time and finessing but I think I got made everything work within reason. Everything is kind of based off the exhaust manifold which I initially designed and the turbo doesn't exactly sit in the position that you want it to sit in. So ideally you'd want it a little bit more forward but being that I was chasing that equal length runner, for me it was easiest just to put the turbo straight in the middle of cylinder three and cylinder four. So now to the exhaust manifold and why I decided to go through the effort of building my own. So I heard this car online that was built probably 13-15 years ago. So I went through their Facebook page and I found photos of what the manifold looks like and it had this really funky collector design and you could really tell that the runners were equal length. Now the collector design is something I don't think that actually gives it sound, it's just a bit of an overkill and probably completely unnecessary but I figured I would replicate that as well. I did sit down and I calculated the complete runner length start to finish with the 3D bends that Tristan from WTF Auto provided me with. We then took that design and created it out of Hypertune bends which already exist off the shelf. After a lot of cutting and welding we got the manifold which is in front of us. The sound of it is definitely smoother, raspier and nicer compared to what's out there on the market but we didn't hit that super high pitch sound simply because we don't have any head work, we've got really small cams, we've got Tomei 260 cams in it. I believe if we had an extra 500 or even a thousand rpm, we had a larger turbo and we had ethanol which we can run in the car. Ethanol would allow for more boost, it would just allow for a hell of a lot more airflow and a lot more sound. Being that we're only running a small Pulsar 5855, we're pretty limited to what sound can actually come out of the car but compared to other vehicles in that range of that size turbo charger, I believe that this would have to be one of the best sounding ones. In the future, if I did decide to continue developing this car and whack on something like a Precision 64 or even a Precision 68mm turbo, I think we'd get a lot more sound out of it but a hell of a lot less drivability as well. So being a small chassis, I wanted to keep it nice and tame for the street, I think it makes about a 460 horse wheel and it's got a 4.3 diff in the back, I've shortened it up slightly. In the next video we're going to paint the engine bay, we're going to refurbish some GDR wheels and the list goes on so stay tuned.