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**Drift Car Dynamics: Building a High-Powered Datsun**

Welcome to Drift Car Dynamics, your go-to guide for building and modifying high-performance vehicles. I'm Chris Forsberg, Formula Drift champion, and today we're taking a closer look at my 1975 Datsun. As you can see, it's in a million pieces – but don't worry, we've got a plan to bring it back to life.

**The Project**

On our last episode, we discussed adjustable suspension and how it can be used to fine-tune the handling of your vehicle. But that was just the beginning. This time around, we're taking a more aggressive approach by tearing the car down to its bare essentials and rebuilding it from the inside out. We'll be installing an all-new aesthetics package, interior, and exterior – essentially a complete overhaul.

**Upgrading the Engine**

The first step in this process is to upgrade the engine. Specifically, we're replacing the old RB25 with a brand-new turbo system. Gone are the days of crusty, log-style exhaust manifolds that restrict flow and cause heat buildup. Instead, we're installing an equal-length Dac Race manifold that will give us incredible mid-range torque.

**Cleanliness is Key**

When working with exhaust components, it's essential to ensure they're clean and free from debris. This includes new gaskets, which are crucial for maintaining a tight seal and preventing boost lag or lack of response from the turbo system.

**Custom Carbon and Billet Intake Manifold**

One of the highlights of this build is our custom carbon and billet intake manifold. Compared to the stock unit, it's a work of art that provides direct flow, is lightweight, and features a huge single throttle body that puts it way out in front. This setup allows for faster response and quicker boost time – exactly what we need for a high-performance vehicle.

**Turbocharger Upgrade**

With all the pieces in place, it's now time to install our turbocharger. This system uses full V-band clamps, eliminating the need for gaskets and making it easy to rotate into position. The exhaust gases flow into the back of the turbocharger, spinning a wheel that creates charged air coming through this housing out into the inter-cooler and into the engine.

**Fuel System Upgrade**

Another issue with older cars is their fuel systems, which often require upgrading to accommodate high-performance engines. We're installing a new surge tank with one pump sitting at the bottom, creating a direct flow without aeration – essential for maintaining power and preventing burned-up motors or pumps.

**Tomei Cams**

Finally, we're installing new Tomei cams on this motor. With an overhead cam setup, these lobes will push down on the spring bucket and push the valves open, allowing more air into the engine. The design of these lobes features higher lift and duration – exactly what we need for a high-performance vehicle.

**The Next Episode**

Well, that's it for this episode! On the next one, we'll finalize the engine build and wrap up the rest of the chassis, getting this thing fired up and ready for the street. Stay tuned!

WEBVTTKind: captionsLanguage: en- What's up everybody, I'm Chris ForsbergFormula Drift championand welcome to the nextinstallment of Drift Car Dynamics.As you can see my 1975 Datsunis in a million pieces.On our last episodes we did alot of adjustable suspension,and just like any car guy, Ijust wasn't finished there.I tore the car all the way downto really build it up from the inside outwith an all new aestheticspackage, interior and exterior.Pull the engine outand clean and spot weldthe entire chassis to really stiffen it upfor our new adjustable suspension.And while the engine'sout I have new manifolds,new turbo, and a whole newcooling system going into help make that extra powerso we're even quicker around the track.(engine roar)And once we're there I'm gonna show youall the settings that we go throughto really dial in the car.(guitar music)So one of the biggest upgrades that we'redoing to the RB25 now, isa whole new turbo system.Taking off this old, crusty,log style exhaust manifoldwhich as you can see is not equal lengthit's not a good flow and itcauses like a lot of heatbuild up in differentregions of the manifold.But it's cast iron so it'll stay together.However, what we're replacing it withis this beautiful, equallength Dac Race manifoldtwo wheeler six into onewhich gives an incredible amount of flowfor a lot more mid-range torque.And then this extra pipe hereis for an external waste gate,so we have a much larger valve tocontrol the flow of theexhaust through the turboto keep boost levels in check.(engine roar)Now anytime you'rereplacing exhaust componentson your turbo system, you wanna make surethat you clean the surfaces really welland always get new gaskets,because you want thosemaning services to seal up nice and tight,because you actuallyhave pressure built upin your manifold and that'swhat makes the turbo spinand what makes the chargedair going into your engineand that's where you get your power from.So any extra leak will cause boost lagor just a lack of responsefrom your turbo system.(engine roar)One of the other highlightpieces of this buildis this custom carbon andbillet intake manifoldit's the true definitionof function and form,versus the stock unit,which is a cast pieceit comes up over the top of the enginecauses a very cluttered engine bay,and a terrible routing systemfor a front mat inter-cooler.This kit gives you amuch more direct flow,very lightweight and ahuge single throttle bodywhich puts it way out in the frontso it's much shorter andcleaner routing systemfor your inter-cooler.Utilizing shorter chargepipes is just like theexhaust system, it givesyou faster responseand quicker boost time, so that you canget the power to the ground a lot quicker.(engine roar)The obvious last piecewe need for this setupis our turbo charger,which has just arrived, perfect timing.Look at that.That's a nice looking piece.And the nice part about this system,is it uses full V-band clamps,so you actually don't even need a gasketyou can just clamp it onthere and you can actuallyrotate it to be in the perfectspot for your application.Now with all the pieces in placeyou can get a little bitof a better idea of howa turbo system works.The exhaust gases flow into the back sideof this turbo charger,spins this wheel herewhich creates charged aircoming through this housingout through the inter-coolerand into the engine.And like I said, you have a valve herethat regulates thepressure in this manifoldso that you don't over boostyour engine and blow it up.(engine roar)Now another problem with these older carsespecially if you're tryingto make a lot of horsepower,is that they do nothave good fuel systems.Most of them even came carbureted,so therefore you have toupgrade pretty much the entiresetup in order to get the properfuel flow into your rails.What a surge tank does isit's a secondary reservoirfor your fuel, whichanother fuel pump lives inso that it doesn't getthe cause and effect offuel sloshing aroundin a big ole gas tank.So now we have a muchtaller narrower cylinderwith one pump sitting down at the bottom,to create a direct flow with no aerationso that we don't cause burnedup pumps or burned up motors.Now the last piece of this engine buildis a new set of Tomei cams.On this motor, the camshaftssit on top of the enginebecause it's a overhead cam setup.What that means, is thatthe cams are spinningon this shaft, based off the timing belt.And as they rotate, theselobes will push downon the spring bucket andpush the valves open.And the reason why wegot after market cams,is because you have a higherlift and a higher durationwhich is the valve opensdeeper and stays open longerto allow more air into the engine.And the way that you getthat is with the cam designof these lobes, the fatter thelobe, the wider the duration.The taller the lobe, the higher the lift.(engine roar)Well we got the turbosystem fully wrapped upand on the next episode we're gonnafinalize the engine buildand wrap up the restof the chassis and get this thing fired upand ready for the street.(engine roar)(guitar music)