Stainless td05/06 bolt on adapter housing

So this has been a gripe of mine, as well as some others spoiled by convenience in the dsm community and massive aftermarket (donniekak, I'm looking at you haha) and I've come up with a solution that would further advance our platform as a whole......


Just like the title says. TD05 stainless exhaust housings to bolt on IN PLACE of your stock headers and dp.

Literally makes anything with a td05/06 chra and td05/06 turbine BOLT ON.

Dramatically cuts costs with removing necessity of headers, precats and dps made to fit.
eliminates the need to purchase 2 seperate performance exhausts to run your turbos (converting from td04 to td05)

(fringe benefit: no more dealing with cracked headers from thinwall stainless kits)

that means the following install like cake
14B's
16g's
big 16g's
evo3's
20g's
25g's
60-1's
anything FP
anything from billet turbochargers.



The best part is, these only would cost 300 per stainless housing.

I contacted Bill at Bullseye performance to inquire about doing some and he responded with "We can make them again but would need a 20 pc min order, price is $299.99 ea."

these plus the td05's themselves are cheaper than most big td04 hybrid upgrades guys.

I'm also inquiring about setting up for t3 adapter housings as well.

Essentially this just needs 10 guys to place orders for their cars as we're in business

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TD05 stainless exhaust housings to bolt on IN PLACE of your stock headers and dp.

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doesnt really make any sense to me. an exhaust housing cannot replace both exh manifolds and downpipe (o2 housings).

do you mean a td05-sized turbine housing accepting td05 turbine wheels that simply has td04 flange patterns? this is the only thing that i can picture.

if so, theyd have to be internally gated. flapper details?
dunno if i would call this "bolt on" like a td04 replacement:
would also still potentially have fitment issues with the comp covers etc since theyve never been tested.
would also still have to figure out clocking, actuators, charge piping, oil/water lines, intakes...

Sounds interesting...more details and pics..

subbed

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Originally Posted by surreal

doesnt really make any sense to me. an exhaust housing cannot replace both exh manifolds and downpipe (o2 housings).

do you mean a td05-sized turbine housing accepting td05 turbine wheels that simply has td04 flange patterns? this is the only thing that i can picture.

if so, theyd have to be internally gated. flapper details?
dunno if i would call this "bolt on" like a td04 replacement:
would also still potentially have fitment issues with the comp covers etc since theyve never been tested.
would also still have to figure out clocking, actuators, charge piping, oil/water lines, intakes...

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I guess I could exhibit a little more clarity when describing what it actually is, but its just an exhaust housing man.

to the rest of your observations:
1)Yes, they're internal. No details at the moment as he hasn't shared them. I'm assuming std td05 sizing, but I could inquire if they start with 38mm sized flappers off the bat

2) Its a bolt on if it interfaces with the factory hardware seamlessly. You can literally bolt it on without custom modification to the stock hardware, I fail to see where there's room for interpretation with that principle relative to these and what they innately are....as they actually DO replace the td04? Not sure where your going with this.

3) true, unless geometry is altered from where the turbo chra ACTUALLY sits, vs the flanging, observe an evoX hotside and notice the flanges are projected, or a borg warner k04. Similar could happen here.

4) the lines/wg/covers/ect would be on the person who's planning on filling the hotside with a snail and what they want to stuff it with, not really a pertinent point from the offering side of things. If they want to get creative and stuff something massive and custom in there, it's their baby. To entertain and address this concern however, its been done in the past with adapter plates, these aren't any different - other than they save you from buying extra gaskets and precats to mate to your dp/td05 setup. Also theres enough billet/generic actuators and compressor housings to satisfy all levels of clocking and compressor size.

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Originally Posted by arm0red1

2) Its a bolt on if it interfaces with the factory hardware seamlessly. You can literally bolt it on without custom modification to the stock hardware, I fail to see where there's room for interpretation with that principle relative to these and what they innately are....as they actually DO replace the td04? Not sure where your going with this.

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Okay... I guess that in that sense the housings do "bolt on" in that they attach to stock hardware with stock bolts, but when I hear that term used, it usually means that the part is a plug-n-play replacement.

When you say "bolt on" and say that anything like a 25g, 60-1, etc etc will "install like cake" it makes it sound like I can grab a pair of td06s with a pair of these hotsides and install them with nothing more than some wrenches. I just can't see this happening without a lot of customization.

As somebody who has used both adapter plates and modified manifolds, I would be extremely skeptical. With the tight spaces in these engine bays, turbo placement is incredibly important and by simply replacing the turbine housings, it sounds like placement is not taken into account at all? Or am I wrong and these turbine housings are somehow specifically designed around the 3S engine bay?

I still think that this is a very interesting idea, I just think that it isn't quite as simple as your post makes it sound.

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Originally Posted by surreal

Okay... I guess that in that sense the housings do "bolt on" in that they attach to stock hardware with stock bolts, but when I hear that term used, it usually means that the part is a plug-n-play replacement.

When you say "bolt on" and say that anything like a 25g, 60-1, etc etc will "install like cake" it makes it sound like I can grab a pair of td06s with a pair of these hotsides and install them with nothing more than some wrenches. I just can't see this happening without a lot of customization.

As somebody who has used both adapter plates and modified manifolds, I would be extremely skeptical. With the tight spaces in these engine bays, turbo placement is incredibly important and by simply replacing the turbine housings, it sounds like placement is not taken into account at all? Or am I wrong and these turbine housings are somehow specifically designed around the 3S engine bay?

I still think that this is a very interesting idea, I just think that it isn't quite as simple as your post makes it sound.

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They would have to be, because the 3/s TD04 turbine housings are unique to the 3/s.

Subbed! fingers x'd. This would be the one for the Cali peepz. Any ETA to some mock ups?

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Originally Posted by surreal

Okay... I guess that in that sense the housings do "bolt on" in that they attach to stock hardware with stock bolts, but when I hear that term used, it usually means that the part is a plug-n-play replacement.

When you say "bolt on" and say that anything like a 25g, 60-1, etc etc will "install like cake" it makes it sound like I can grab a pair of td06s with a pair of these hotsides and install them with nothing more than some wrenches. I just can't see this happening without a lot of customization.

As somebody who has used both adapter plates and modified manifolds, I would be extremely skeptical. With the tight spaces in these engine bays, turbo placement is incredibly important and by simply replacing the turbine housings, it sounds like placement is not taken into account at all? Or am I wrong and these turbine housings are somehow specifically designed around the 3S engine bay?

I still think that this is a very interesting idea, I just think that it isn't quite as simple as your post makes it sound.

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if we want to share fab experience, as someone whos previously stuffed a turbo the size of a basketball under his hood, or who is currently running custom 18g sized td04's in there, let me express that I understand your concerns for fitment and am WELL aware of how tight these bays can be and how difficult it is to properly cinch things up, keep oil lines at grade, ect ect.

The purpose of this would to be to provide a less involved solution to convert to td05's

The point of these housings IS to make it that easy, and to remove the exhaust system swapping from the equation as well as reduce overall costs to convert. It will be designed with compressor cover clearances in mind as well as line placement

I'm interested in seeing where this goes even though I'm not ready to upgrade turbos again just yet. $600 is very affordable. Fitment seems like it would be hard to design although I'm sure these guys know what they're doing.

I just worry about how much flow you can get through the small outlet of the factory manifolds. That was one of the issues with adapter plates.

Subscribed...

^adapter plates made great power for people. Can you point me to where they were a major restriction that was solved with td05 headers?

Stock Td04 headers have supported 680 awhp so far with the limit being the dr750 turbos, Nobody has tested the true limits of the td04 setup, or hell, tested the limits of a tubular td04 upgrade.

Gil at GCtech started to show these some love, showing a 6awhp gain in litearally just swapping the front oem header with his tubular one on a VIRGIN STOCK CAR.

Stock boost.
Stock exhaust with cats.
Stock tune.

This illustrates gains to still be had, and also notes that the td04 header limits havent been explored as nobody has stuck with them enough to see what they can do.

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Originally Posted by familyMAN

^adapter plates made great power for people. Can you point me to where they were a major restriction that was solved with td05 headers?

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I dunno, ask Adam, he'd know since he had both. Think Trevor played this game also.

Also, can't stock mani be honed and ported?

Not the front without a lot of welding.

I wouldn't consider welding 4 runner to flange seams under 2" in size dia. "a lot" of welding. I welded mine in under an hour, including grinding.

---he is right though, the way the front manifold is designed from the factory, if you want to port/hone it out, it's going to take some reverse welding to ensure it doesn't crack. Support rods between flanges may also not be a bad idea either....


Most aftermarket manifolds already are the max diameter for the triangle flange to begin with. No porting necessary.

ex:

OBX TURBO MANIFOLD & PRECAT DELETE STEALTH R/T TT TD04

Well, I got word from Bill today @ bullseye, and unfortunately its seems that when they noted that the td05/td04 adapter housings they had in the past were made, it may have been for a different vehicle application, meaning some bad news

The R/D costs would be around to 20,000 to retool a mold, and they would need a donor vehicle to mock these onto for fitment.

I've currently asked about what the prev vehicle application that their td04/05 adapter was designed for and to see if it can't be retrofitted with some alternative machining to our cars instead

I'm awaiting his response, otherwise I'm not sure this will get off the ground unless a larger vendor lends some assistance here.

They can use my car, and sign me up for a set.

One day.....

I'd like to swap to OBX mani's and VD the results..

Doesn't surprise me that buy in will be high for a mold. Bet it was wrx td04 flanged that they were working on.

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Originally Posted by familyMAN

Doesn't surprise me that buy in will be high for a mold. Bet it was wrx td04 flanged that they were working on.

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Individual pricing on a 20pc order using an existing mold was kinda the give-away unfortunately since a 3S-specific set would also have needed to have been sold in pairs as each bank would be a different housing.

Too bad though, would have been cool to have seen something like this. Props to the OP for looking into it.

Don't pronounce it DOA yet!

Bill @ bullseye is looking into an interesting idea with their foundary

He may possibly be able to modify the factory housing with buildup welding and machining for a conversion, otherwise I'm suggesting this idea to IPS as they have a thread on 3si asking about what products would they like to see/be unique to show they're back in the game.

This sounds like a perfect candidate.

Modify what factory housing? Td05 to bolt on to td04 headers or td04 to accept td05 chra?

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Originally Posted by familyMAN

Modify what factory housing? Td05 to bolt on to td04 headers or td04 to accept td05 chra?

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I think he is talking about this, however I had this idea at one point. The TD05H turbine wheel is bigger than the TD04 housing itself. If you bored out the 3/s housings you would go right through IIRC.

If it's WRX flanged, might be cheaper to just weld WRX flanges onto factory manifolds (which I've contemplated doing anyhow and using the larger WRX housings instead.) Not sure about the fitment of the bigger housings for TD05 though and if they would interfere with something else (I imagine front motor mount would be the most likely thing.)