Buschur Racing's major EVOX build

[David Buschur]

This build is on our 2008 EVO X, which we bought new as soon as we could get our hands on one in northern Ohio. The car has worked out well for us. This is how the car was equipped at the time it came apart:

BR FMIC
BR upper and lower i/c pipes
BR ported stock exhaust manifold
BR ported stock 02 housing
Stock downpipe
BR 3" offroad pipe
BR Cross flow 3" catback
DW 1000cc injectors
BR manual boost controller
BR 3" MAF pipe and filter kit with BR filter shield
Exedy Twin clutch
Stock fuel pump
BR tuned stock ECU
Blouch Dominator 2 turbo
Robi Spec KW suspension
Cosworth MX1 camshafts with stock springs/retainers.

The car was tuned on 93 octane and made about 410 whp here on our dyno. The car ran a best of 11.7 at 124.xx mph in the 1/4 mile.

There is NO weight taken out of the car beyond the weight savings of the BR parts over the stock parts and the spare tire.

After quite a bit of running the car trouble free, it burnt off a spark plug electrode. A new plug was put in and it seemed as though we got lucky. The car still ran fine. I drove the car for awhile like that and then took the car to Mid Ohio for some HPDE 4 action. During that time the car overheated severly. Once again, it seemed as though we dodged a bullet as the car still ran fine after a new set of plugs were installed and the car cooled off. I could tell by listening to the engine crank it was down on compression but no smoke and it still felt strong enough. The car kept bending the electrode closed on #4 spark plug which made little to no sense.

Monday the car came into the shop and the guys got busy pulling the engine out for the new build. Here's the old engine after being removed:



Misc parts taken off the engine:



Here are pictures of the new BR Stage 3 head being used for the build:









Here are pictures of the new BR Stage 3 block





Stage 3 Engine bolted together



Picture of the stock turbo set up.



Car on lift





No engine in engine bay



Trans



We decided to change the final drive in the car and while the trans was out take a look at it and make sure everything looked good. The diff pins were worn already with only about 4,000 miles on the car. The pins will be upgraded too while it is apart. Here's a picture of the junk stock pins:



Close up of junk trans pins



New trans pins



While the car is apart we will be building our long awaited GT35r kit for it. Blouch sent us out there new GT600R turbo to try out on the car, here's a picture of it:





The engine is now back in the car and we are waiting on a bearing for the transmission that needed replaced. Also enroute to use is the new Exedy Triple cerametalic clutch.

We installed the new BR double pumper in the tank shortly before the car was taken part for this build. So the fuel system will be in good order. We will be running the ID1000's in the car now too. Those will eventually end up being upgraded to the ID2000's so I can run E85 in the car, for now I will start with the ID1000's.

This build is going to be fairly serious with us still concentrating on making as much low/mid range power as we can and still make over 600 whp on our dyno. The goal is to put the car, in draily driven form, into the 9's. The car will be running the stock ECU and I have no intentions of every changing it. Thankfully many people are putting a lot of hard work into the EVOX ECU so it makes my job of tuning the car quite a bit easier.

Some side notes I'd like to discuss. We have two EVOX in here right now, both built here, both tuned here. Both ran great for thousands of miles and then ended up with burnt off electrodes in them. I don't follow all the threads on EVOX's as much as I maybe should and never heard about a problem with the fuel pump relay until I heard about it from Bryan @ GST. After hearing about it we called the dealer to get a new relay and when we gave them the part number they asked if it was for an Outlander..........little odd. Well come to find out the EVOX and Outlander use the same relay AND the Outlander's relay is ON RECALL!!

Both of these EVOX's were being pushed using the stock pump and large injectors already and now learning about this potential relay problem I really wonder if that was what ended up happening to both cars. The other odd sign was both of these cars, when hot, sometimes were nearly impossible to start...........very well could explain that too. New relays have been ordered and will be installed in both cars.

I can't wait to start on the turbo kit and we'll keep this updated with more pictures as the build progresses.

Thanks for reading.

[legendary_wraps]

I see this turbo on my car in the near future...... after you guys work out the particulars....

[David Buschur]

Update.

The engine is fully assembled and back in the car. We are waiting on a few parts still for the trans to come in and then the new Exedy Triple Disc clutch can go in along with the trans. Then with the engine in it's proper location we can start building the turbo kit.

Today I took apart the factory shortblock. It's pretty amazing how good it all looked. All of the main and rod bearings were exceptional, pistons 1, 2 and 3 were also in excellent condition, rings were free and no signs of detonation on the tops or skirt. Each piston did have some damage to the top from lose parts from #4 piston making their way into those cylinders. #4 piston was destroyed on the top, right down to the top ring. #2 ring and the oil ring were also still free and in decent shape. Bearings on #4 were also in excellent shape.

The block is being machined for a new build now and I am anxious to see how the cylinder bores measure before the new work is started.