Thread: Super CT26

BorgWarner are a leading turbo manufacturer and seem to have taken over a lot of the market for current diesel engines as manufacturers need to meet stricter emissions - they have lead the way with sequential and compound turbos.

BW bought Schweitzer (S??? turbos) and KKK (K?? turbos).

The S200 and S300 turbos are some of the most used turbos around, but not always obvious as many are re-badged by other companies such as Caterpillar. The S200 I bought was put together by Bullseye using mixed and matched BW parts, specifically a smaller turbine with a Bullseye manufactured 0.55 A/R housing. See compressor map below - from memory, the plotted (red) line was for 300 HP output with my 4BD1T.

The designation is S256, where 56 is the compressor inducer dia in mm (exducer is 80 mm) - Garrett's designation includes compressor exducer in mm.

BW use some technology to broaden the compressor map that are more advanced than what Garrett do. While fixed turbos are behind VNT, BW also have VNT, sequential and compound systems.

Edit: I'm sure I posted a pic of the S256 on the standard manifold of my 4BD1T in another thread in this forum sometime ago (in response to something Matt asked).

Thanks for the input bush good to see you posting on the site again takes a bit of the pestering that we give dougal about info on turbo's .... I didn't know BW made turbo's for caterpillar I thought they were cat turbo's as they hav stamped on them but it makes sense a specific manufacturer making them...holset are in buisness with cummins and hav released there new range and technologies in a article I was browsing what's your opinion on them ? well with a compound setup I hav been told they are useless for our motors and would be undrivable on road due to lag (as dougal stated "rice burner" terminology) but I cannot see how this is the truth and seeing what dougal has said about vnt having problems has anyone done a comparison between a vnt and a compound setup ?

ok so today pullled out the aircon, exhaust manifold, front clip, bullbar, airbox and started sorting stuff. we had a few different manifolds to work with, 2 different turbo manifolds and one center dump normal exhaust manifold. the normal exhaust was the largest internally but would have been too much of a pain to cut and weld the new massive ct flange onto. for now we have just cut and welded a turbo manifold (the one that has the turbo flange sitting horizontally) with the new 63ishmm ct flange onto. we tacked on the flange then machined out the guts of the manifold to fit the huge ct flange then heated up the manifold in the high tech oven for a few hours welded the flange on, then back in the oven then into a slow cool chamber till trow morn. (i will probably go all fancy and get some headers made for it when i have the time and money) so some pics of the turbo. next a stock turbo for the motor tb28 garrett

just for shiats and giggles the 'babboon', the 110 that the the ct is going into, bought it for $1600 as it went under in the floods easrlier this year, hopefully a wolf in sheeps clothing, there will be a build up on it - my raceline beadlocks, 35KM2's, bars and buttons....but it will be my tow rig....



and the high water mark that lasted for a few days...

That's a whole lot of work. You can make a single plate bolt on adapter for T3-CT26 round port.

not really, 15mins on the mill, a touch of welding, heating and die grinding and presto. well mainly because i need to get it done and we have to work with what we have, plus the flange on the manifold we had was tiny and needed some work to open it up a bit, i'll post pics of the difference trow, not perfect but will do for now...

the T3 flange mainfold was well over $400, and i didn't have one so had to improvise....

Oh right, I'm not sure which manifolds you've got, so I'll wait for the pictures.

Cheif, compound turbos are the ultimate solution. But the space they require can be a big problem. Bush65 has a Borg Warner compound set off a production 4.5 litre diesel, I was offered the same set but couldn't fit them so passed the deal along.

Good work def 90 will be interesting to see more! I used the same method to fit my td5 turbo to theee original manifold by milling and cast iron welding methods because the gt2052s has a triangle flange but it becomes a pain because once done it cannot be changed to suit other types like using a standard manifold and adaptor plate would....I'll
Have to show some photos of my adaptors I have made that incorporate egt probe hole in them but not as nice as dougals cad 1piece solid design.....
Yeah space would be an issue with compound setup it would be possible to make up your own setup out of 2 different turbo's ? Alot of welding though! if you was to make your own what size Hp and Lp turbo's would you use ?