Question About Turbo Flanges

[sttp01]

I understand that most turbos have their own flange size and not all are the same, but is there any standard sizes and which turbos have them? Or can any flange that fit be modified for the exhaust maniford? Any help would be great

[Logan76]

whoa whoa whoa, your really confusing me, theres the T-2 flange, T-3 flange, T-4, there's the triangle flange like subbies have, theres alot of dif. flange types, but not EVERY single turbo is different, you kinda have me confused so this post may not be relavent to your question.

[AZhitman]

When you shop for a manifold, it'll be defined by its flange... Most common seems to be for a T3/T4 design, which coincidentally is a great range of turbos for the KA, and is a pretty commonly available turbo.

[Chezedik]

For sniggies, the common T3 flange is a Ford flange that they use all in the aftermarket. Surely, he must be talking about flanges from the other OEMs.

[WDRacing]

Certain turbo's will work with certain manifolds. The flange size or type is the only determining factor in this process. There is a slight bit of confusion involved somtimes when you're just figuring things out. Like what the hell is a T3/T4 flange?? Or what is a T28?

There are 3 basic and very common flanges used. There's the T25, the T3 and the T4 from smallet to biggest.

The T25 is for very small turbo's and also the T28. I don't know why they came up with that gay turbo, its the same thing as a T25.

The T3 fits any turbo with a T3 exhaust housing. By that I mean the very common T3/TO4 series, which in my humble opinion, the best turbo for a KA period.

The T4 is for larger turbo's. I have a TO4E on my KA at the moment.

Here's where I buy all of my flanges, this place rocks.http://www.roadraceengineering...s.htm

Hope that helps..

[Biggamehit]

^^ good pics wd

he would be less confused if u just called the T25/28 an T2 flanges lol

supra's are like CT26 or something??? thats really the only different ones i have seen/work with besides subaru like someone mentioned earlier

i just viewed that page u posted, i bookmarked it,

i just got my T3 7bolt flange from this site called http://Blaastperformance.com Located in canada another great source for Complete custom setups.


Modified by Biggamehit at 10:02 AM 12/3/2006

[Chezedik]

Yeah, that is where I got mine too. Worked great!

Many of the Japanese turbos use weird variations on the Mitsu flanges.

Volvo uses a weird T3 flange

GM uses a strange 4 bolt outlet

ATP Turbo has many of these flanges.

[Chezedik]

Oh yeah, and any of the IHI turbos are too small to use, so do not waste your time.

[sttp01]

thanks for clearing that up... I really want to to do all my research before I do anything. Trying to build my ka right to be about ~250-300 hp. From what I hear T3/T04 is the most popular choice? and T25 and T28 is too small for any suitable horse power. I also know it depends on boost levels ect. but generally speaking.

[Chezedik]

For that power level, a T28 would probably be okay. But the T3/T04e is vastly more efficient. Here is a link to a good turbo for sale:

zerothread?id=212492

[S13FX]

Whoa hold on though the flange that Biggamehit posted is for the exhaust outlet flange the flanges that WDRacing posted are exhaust inlet flanges. The exhaust outlet flanges come in various shapes and forms too unfrtunetly. I wish they just made this **** universal that way the cost of everything would go way down too .

[Chezedik]

That is why everyone just uses the Ford flange.

[PapaSmurf2k3]

Oh yeah, and any of the IHI turbos are too small to use, so do not waste your time.

thats a stock 2002 WRX turbo.. .waaay too small. I am in boost at idle. Literally, my blow-off valve is open at idle.

Im thinking (and hoping) a VF-22 or VF-34 will be OK though.

anyway, thats what the flange looks like.

[wcbjr]

Oh yeah, and any of the IHI turbos are too small to use, so do not waste your time.

A VF34 is ok for 300whp and a VF22 is slightly more power with slower spool because it is a journal bearing.

[wcbjr]

But you can use rather large turbos with that flange. 16G, 18G, 20G, 25G, T67, FP Green, FR Red, Deadbolt SuperZilla, Helix RR500. Lots of good ones out there.

Is that an APS downpipe?

[WDRacing]

For that power level, a T28 would probably be okay. But the T3/T04e is vastly more efficient. Here is a link to a good turbo for sale:

zerothread?id=212492

Just remember, anyone who recommends a T28 is also probably gay...Don't buy anything smaller then a T3 or else when you upgrade...and trust me you will...you'll have to replace the manifold as well as the turbo.

[Logan76]

FP Green, my freind had one of those on his talon it was a freakin' huge turbo if I remember right.

[Chezedik]

I am just saying that at such a low power level, it would be nice.

BTW, you didn't think I was gay last night...

[WDRacing]

Not until you tried to cuddle after...FAG

[Chezedik]

You know how I know you're gay?

Your d!ck tastes like ****.

[pr240sx]

Modify that WRX flange and put there a 87 Buick turbo.Uses somewat similar flange.

[PapaSmurf2k3]

But you can use rather large turbos with that flange. 16G, 18G, 20G, 25G, T67, FP Green, FR Red, Deadbolt SuperZilla, Helix RR500. Lots of good ones out there.

Is that an APS downpipe?

yes that is an APS downpipe. Really freggin sturdy and came with a heat shield and O2 Bung... my car is like, half subie haha.

[Chezedik]

thats a stock 2002 WRX turbo.. .waaay too small. I am in boost at idle. Literally, my blow-off valve is open at idle.

BOV's are supposed to be open at idle.

[PapaSmurf2k3]

... good to know... learn something new every day.are they supposed to be just open or actually blowing out air, cos mine blows out air... kindof a lot of air too. I would think it wouldnt because that would screw with all the people running a suck through MAF setup.p.s. cant wait to come home for christmas and work on my car!p.p.s in 30 minutes I have an interview with 'Die Institüt für Füge und Schweißtechnik' which is the institute for fusing and welding technique. Wish me luck everyone!

[Chezedik]

Both, the turbo is still spinning. While it may screw with people, it's just the way it is. While it may not be making boost, it will be moving air, which would otherwise hit a closed throttle plate. And eventually make positive pressure, this is how Roots blowers make boost (by backing air up in the intake tract). This is assuming it didn't surge the compressor first, or experience blowby on the wheel.

You can help remedy it a little by tightening your valve down, but this may cause you surge, so be careful.

Also, it happens because it has vaccuum from the mani on one side, and positive (or at least atmospheric) pressure on the other side, which is enough of a pressure differential to cause the valve to unseat and overcome spring pressure.

This is why I still contend that a cheap BOV would work as well as any other, since the only important parts would be the diaphragm and spring. What can they cost to make?

Anyway, I just have the DSM 1G BOV.

[PapaSmurf2k3]

yeah, I have the stock WRX BOV. I dont really care that its blowing it off, I have a blow through setup so it really doesnt matter.BTW I got the 'job' at the institute. I can either work with multiple part polymers and induction curing, a new technology called plasma welding, or I can help build a room and take part in experiments with multi-fusing and bonding techniques (riviting, then welding, then polymering etc). I can also work with laser welders and stuff like that, but the others would be better cos they are more experimental, and I have my internship at Mercedes and a lot of people in the above mentioned fields work with or have worked with Mercedes... so connections here we come! sorry for the threadjack im just kinda excited.

[Chezedik]

Good Deal on the Institute of weird German words! Sounds like a good opportunity!

[lrb_2000]

Wait.. my BOV isn't open at idle.. and I have no compressor surge.. am I missing something?

[Chezedik]

Well maybe not, what is the setup?

[WDRacing]

Ok fella's, make a new thread. I want this one about flanges etc...we've gotten pretty far away from that.

WD