AVO turbo kit for BRZ - initial build thread

[MattQ-WP]

Subscribed and ammped!!

[subatoy]

I'm not kidding when I say this turbo kit is the difference between me buying this car or not.
the benefits of this kit to me are:

-Getting the real boxer sound.
-Conservative boost with great gains while retaining reliability.
-This is the only reasonably priced turbo kit I've seen probably EVER.
-AVO is known for quality and have been turboharging subies for ever.

If this AVO announces official pricing and it's under $3,600 I'm not kidding when I say I'll buy the kit before I even buy the car.

I'm watching you guys closely!

[vubaru]

Originally Posted by subatoy

I'm not kidding when I say this turbo kit is the difference between me buying this car or not.
the benefits of this kit to me are:

-Getting the real boxer sound.
-Conservative boost with great gains while retaining reliability.
-This is the only reasonably priced turbo kit I've seen probably EVER.
-AVO is known for quality and have been turboharging subies for ever.

If this AVO announces official pricing and it's under $3,600 I'm not kidding when I say I'll buy the kit before I even buy the car.

I'm watching you guys closely!

If the initial pricing is around that, I'm going to cut AVO a check on the spot and then hit John up for a turbo tune, done deal. AVO has a great reputation in the 2.5 RS community and I'm glad to say that it appears they are continuing on with that tradition for the FT86 platform.

One of my biggest regrets is never buying an AVO kit for my RS Ehh, the EJ25 doesn't take to boost nearly as well as the FA20 anyway...

[civicdrivr]

Originally Posted by vubaru

If the initial pricing is around that, I'm going to cut AVO a check on the spot and then hit John up for a turbo tune, done deal.

Same. I love the design of the kit and how stealth it is.

Question though - I'm not well versed when it comes to turbos, what's the difference between internally and externally wastegated turbos? Which is better?

Sent from my Nexus S using Tapatalk 2

[Visconti]

Originally Posted by vubaru

If the initial pricing is around that, I'm going to cut AVO a check on the spot and then hit John up for a turbo tune, done deal. AVO has a great reputation in the 2.5 RS community and I'm glad to say that it appears they are continuing on with that tradition for the FT86 platform.

One of my biggest regrets is never buying an AVO kit for my RS Ehh, the EJ25 doesn't take to boost nearly as well as the FA20 anyway...

Can't wait !

[Bonburner]

Can you guys fabricate an Even Length Header and leave that as an option?
Seeing how it lines up to the stock set up I'd assume it'd be great and increase sales ~

[vubaru]

Originally Posted by Visconti

Can't wait !

I have a free Southwest roundtrip flight to your bay area city of choice... either that, or there's always Vegas in Nov.

Gotta get my hands on this kit.

[Ironsquid]

Originally Posted by AVOturboworld

I realized that the initial photo probably didn't show it very well, so I've edited it a bit:

We have a cast "bellhousing" section that bolts to the turbocharger exhaust housing - essentially a shorty downpipe. This runs back and bolts to the stock location secondary cat. This maintains the stock exhaust profile.

So any exhaust systems, stock or aftermarket, that would have bolted up to the stock exhaust manifold will be able to bolt up to our turbocharger kit.

Smart cookie!


Lemme know when you can take my money please.

[AVOturboworld]

Originally Posted by civicdrivr

Question though - I'm not well versed when it comes to turbos, what's the difference between internally and externally wastegated turbos? Which is better?

OEM Turbochargers are, in general, internally wastegated to bleed off boost pressure into the exhaust. It is easier to package that way, and is quieter.

External wastegates became popular because many aftermarket turbochargers simply use an OEM or off the shelf exhaust housing, and the internal wastegate wasn't large enough to keep up with the higher boost of larger compressor wheels that were fit. It would overpower the small wastegates, and boost creep would come into play. The solution was to simply move that to an external wastegate setup.

There is, of course, another solution - make a larger exhaust housing with larger wastegate. However, that solution requires somebody to actually cast and mill the housings themselves. To toot our own horn, and to be also totally blunt about it, we are one of the few that make our own exhaust and compressor housings. Thus we haven't gone down the external wastegate path - if there were boost creep issues, we'd engineer that issue out on the exhaust housings. That's why our AVO380's are running just fine at 30psi on diesel racing trucks on an internal wastegate setup.

But lets be realistic here - a 12:1 compression 2.0-liter engine isn't going to run 30psi, other than on very exotic builds. 5-10psi is likely the limit on a "street" build that's both daily driver friendly and reliable. At those psi/boost levels internal vs. external wastegating is not much of an issue.

[Ironsquid]

Originally Posted by AVOturboworld

OEM Turbochargers are, in general, internally wastegated to bleed off boost pressure into the exhaust. It is easier to package that way, and is quieter.

External wastegates became popular because many aftermarket turbochargers simply use an OEM or off the shelf exhaust housing, and the internal wastegate wasn't large enough to keep up with the higher boost of larger compressor wheels that were fit. It would overpower the small wastegates, and boost creep would come into play. The solution was to simply move that to an external wastegate setup.

There is, of course, another solution - make a larger exhaust housing with larger wastegate. However, that solution requires somebody to actually cast and mill the housings themselves. To toot our own horn, and to be also totally blunt about it, we are one of the few that make our own exhaust and compressor housings. Thus we haven't gone down the external wastegate path - if there were boost creep issues, we'd engineer that issue out on the exhaust housings. That's why our AVO380's are running just fine at 30psi on diesel racing trucks on an internal wastegate setup.

But lets be realistic here - a 12:1 compression 2.0-liter engine isn't going to run 30psi, other than on very exotic builds. 5-10psi is likely the limit on a "street" build that's both daily driver friendly and reliable. At those psi/boost levels internal vs. external wastegating is not much of an issue.

I know you mentioned the welding in the picture is just for placement. I've seen some turbo headers crack welds under heat/pressure/weight.


Any cross weld bracing for final product? Doesn't look like is can handle the weight of the turbo with the heat and vibrations.


Unless there's a bracket holding the turbo somewhere that I can't see.

[AVOturboworld]

There will be a bracket holding the turbo in place - we wouldn't have the exhaust manifold holding it in place unless we did a cast nickel-iron exhaust manifold! (which, admittedly, we have done on the LS1 twin turbo kits) But not on this!

[Ironsquid]

Originally Posted by AVOturboworld

There will be a bracket holding the turbo in place - we wouldn't have the exhaust manifold holding it in place unless we did a cast nickel-iron exhaust manifold! (which, admittedly, we have done on the LS1 twin turbo kits) But not on this!

Lol, cast iron mani, that would ruin the weight bias quite a bit!!


Sounds good, price is good, count me in for first couple of orders, I've read alot of good things about AVO so far.

[sirus]

I'm excited!! My wife... not so much... Can't wait to see the results!

[2forme]

Originally Posted by AVOturboworld

I realized that the initial photo probably didn't show it very well, so I've edited it a bit:



We have a cast "bellhousing" section that bolts to the turbocharger exhaust housing - essentially a shorty downpipe. This runs back and bolts to the stock location secondary cat. This maintains the stock exhaust profile.

So any exhaust systems, stock or aftermarket, that would have bolted up to the stock exhaust manifold will be able to bolt up to our turbocharger kit.

This is awesome news for us with the SRT header back exhaust system already.

This kit looks like it would be a snap to install/take off if going to the dealer for anything. The price is certainly right. All I need is a dyno graph and I'm sold. Then I can finally steal @Visconti for a day and we can have our own turbo fun haha