Garrett. .82. The .63 would lose almost 100 ftlbs of tq on pumpgas at 23 psi from peak tq to tq at redline, the .82 would loose 200 ftl bs on race gas from peak to redline.

The problem isn't making the boost but keeping it up till redline, the tiny hotside/turbine wheel of the 30R is overloaded with tons of exhaust gas and nowhere to put it.

Great build JID I would seriously recommend you put the .82 int here before you bolt it all together as you will probably make close to 500 ft lbs of tq and then be down to 200 at redline with the .63 as opposed to peaking slightly lower(most likely later, but who cares if your making 480 wtq at 4800 rpm?) with the .82 and being able to carry more boost to redline.

Scorke


Scorke

 

My turbo has the Precision .63 turbine housing. AMS did lots of testing on Precision VS Garret turbine housings and found that the Precision .63 flows like a Garret .82 without the lag. That's why they use the Precision .63 on almost all of their turbos.

At this point I'm going to just go as-is and see what happens. I'm not looking for the best setup ever and dyno figures to brag to everyone about. I just want the car to make some usable power. If/when my manifolds cracks I'll reconsider the setup and see if I go Red, or something like a CBRD hybrid. I think Chad's Time Attack car will give some good data on road race type setups if he ever finishes the thing.

 

weak.

 

I know, I don't have enough time and the economy is the suck - people are not buying parts like they used to.

 

I hear you on that. Patent it, license to a shop and collect the royalties!

 

wow....amazing set up

 

I added some aluminum angle to my side skirts. I'll use this to mount rubber skirts which hang down and seal off the bottom of the car. I should have those on tomorrow.



Here's the entire bottom of the car getting ready to go back in. I added some more jack access points to the side skirts and a wideband access to the center panel. All the access holes will get taped up with speed tape at the track.

 

You dont mess around son! How does the wifey deal w/ all of this?

 

Man you make some much stuff for your car and you have some really new and cool ideas man your a roll model Will you come down to Miller this year for the Evo vs. STI Shoot out? I would love to see your car in person some day These pictures don't do your work justice man

 

This project is simply mind blowing

 

Under the idea that it will stop at a certain point, she knew that rebuilding the motor and such was a big project. Most of this got tacked on as a side effort to the motor build, and reworking a lot of the parts I had hacked together before. I'd like to be done building parts and just go to the track. After this first track day in March I'll be done building stuff for a while. BUT I've always got ideas in my head...

The only big fabrication projects left are the rear diffuser and GT wing. And those probably won't get started until Mid-Summer. It's coming up on house project season and I've got a sprinkler system to install in the yard and more rooms to paint I'm sure .

So I plan on installing an Accusump, and upgrading to 2 piece rotors, as well as switching to E85. I've got to save my monies and get that stuff out of the way, do house projects and then I can get back to building more parts.

I'd like to, it would be fun to get together with Adam, Jason and the old crew. It's a big drive though. I'll probably run the car in Washington and Oregon this year and make sure it's working how I want it, and finish up all my little modifications. Then maybe next year I can plan on taking it on a few road trips.

 

Hi there,i'm new to this forum & this is my 1 post ... Been reading your engine build up jid2 ... its very intresting Really envy you guys that can rebuild your very own engine ... There are some question i like to ask ...
What if i had a forged 2.0 engine ... will the gt3076r with 0.63 be a better choice or 0.82 ?
Will the 0.82 be too laggy ?

 

^^^^ .63 Precision housing - best of both worlds.

Finished the side skirt additions last night. They came out really nice. I wouldn't have done this if it wasn't for the fact that I had all the material just sitting in the garage from other projects - it was almost too easy. The skirts are TirePlast http://www.tapplastics.com/shop/product.php?pid=322&, a rubber made from tire regrinding. I used it for my airbox MAF seal and had a whole roll of it.



The gap is 1.5 inches from the skirt to the ground. I didn't want it always dragging from little bumps or uneven surfaces.



I ordered the Accusump as well last night.

 

Jared can you explain the design in this picture a little more for me and others who may be curious? Thanks.

 

Going from a 2.0 to 2.3 on a .82 I made no more HP but gained 40 ftl bs of tq peak and more/less throughout the rev range.

If your going to be building a 2.0, and have a lot of headroom over 7k rpm's, I would go ahead and say .82. It will be a bit lazier than the .63 down low but will put down a lot more power up top. (where the 30R really starts to blow hot air for the most part IMHO)

Scorke