tdo4h-13g to a tdo4-18t

[Mom'sRide]

I am starting to learn about turbos and what makes their indv. parts. A question for you turbo buffs.
1) Was there a volvo that came with an 18t in it?
2) Can you take a the exhaust portion of a 13g or a 15g and place it together with the compressor side of the 18t
3) what does the "tdo4" or "tdo5" designation refer to.
Thanks for your help.
JT

[mAydAy]

Some of the V70R's had 18t's.

Your 940 has a 13c not a 13g in it (13g's were in LPT FWD's). The 13c exhaust housing is completely different. The 18t's have different exhaust housings than the 13g also.

TD04, TD05 refers to the size of the turbine (exhaust side) of the turbocharger.

[Mom'sRide]

Thanks for the reply. I should have said it but my car has just received a cheryturbo 15g. Can either of these (13c or 15g) be made into any kind of hybrid (tdo4/largercold side), with what if possible.
Is the only difference btwn a 13c and a 15g the turbine wheel?
Thanks
JT

[MrDoug]

The TD04HL 15G has a bigger turbine wheel & bigger wastegate than the TD04H 13c. The L stands for large if I am not mistaken

[benflynn]

h means cbv, and l is heavy indust, nothing from the 13c would be usefull in a hybrid if you have a whole 15g, only if it comes off something w/a diff turbine housing and you would need it for backward compatabilty, but a hl housing is much better than a h housing

[IceCold4x4]

so is someone saying it's possible to mate a 18t compressor side to a 15g hot side?

[benflynn]

hot sides are the same, since mitsus have no backing plate i think it takes some work, unless they have the same exducer size? then it woud just be a wheel housing upgrade but i think the 18t has a larger exducer so it needs a larger hole

if you wanted to go from a t4b Strim to a t4b Htrim all you need is wheel and housing(or have housing punched out)

but if you want to go from a to4b Strim to a to4e 50trim you would have to change the backing plate and housing too since to4b has a 2.75 ex and to4e has 3"

[BDKR]

Thanks for the reply. I should have said it but my car has just received a cheryturbo 15g. Can either of these (13c or 15g) be made into any kind of hybrid (tdo4/largercold side), with what if possible.
Is the only difference btwn a 13c and a 15g the turbine wheel?
Thanks
JT

Yes. That's what I'm running now. A 13c hotside and a 15g cold side. But note that if you are going to do this, you can't do it with TD05's (to the best of my knowledge at this time).

If you want to use the 13c hotside, then you have to take the hotside wheel and shaft out of the CHRA. You then put that through the 15g or 18t (or 16t if that's what you want to do) CHRA then put the compressor wheel and housing back on. The reason (at the very least) you have to use the cold side CHRA is because the compressor wheel sits slightly recessed.

CAUTION: Don't do this if either of the turbos have some miles on them. Both of mine where in OK shape (the 13c in much better shape then the 15g) in terms of the various seals. Both shafts looked great! However, when I put it together, I did note some in/out play and I suspect it's resulted in huffing some oil out the back side every now and then. From time to time now when I start the car (normally after it's been running, like say coming out of a store or something) it kicks out some blue smoke.

I say I suspect because obviously I don't know for sure. I was seeing oil from time (but not as often) before I built the hybrid. I also had an episode where I developed a small hole in my radiator and ended up driving 5 miles with close to no coolant! :omg:

Anyway, I would suggest a rebuild kit if you do this. If the shafts are in good shape, just replace the seals.

Lastly, I don't really suggest you do this. I think you'd be better off with the larger TD04HL hotside.

Cheers

[Mesoam]

the 18t came on euro cars...s70R and one other, i forget which...

[Mom'sRide]

This is great info and i really appreciate all this help.
Couple of new questions...
... so if i understand this correctly the only difference in a 13c and a 15g is the the wheel, unless there is a HL housing involved.
Did the 15g come in both the H and the HL flavor?
The reason i am wondering is because i purchased a "15g" from someone who said that it was a cherryturbo build and when i got it it has a blue tdo413c tag on the cold side, but the wheel looks like it has double fins, you know, kinda stacked and different sizes, aw hell, a picture is worth at least 10 or 20 words rite now.
anyway,
im not saying that i think this person sold me something trying to defraud anyone or that he did in any way, but i think you can see that it can be a bit confusing if you have never seen anything other than a 13c or a t3 (both fairly common on volvos as i understand so far). Any pics would be great.
Thanks
JT

PS whats up with the different colors for the same type turbo? ex. red or blue designation tags

[acbarnett]

mitsu related question, did the 15T come with the TD04H or TD04HL hotside?

if I'm not mistaken it came with the TD04HL hotside, and there should be no reason why a 18t center and comp section wouldn't fit in a 15T exhaust housing. The only thing that has me worried is that the saab people talk about 5cm and 6cm exhaust wheels, but these same people think that fitting a clipped 18t comp wheel into the stock 18t comp housing is the only turbo upgrade option... D

does anyone know anything about this?

[benflynn]

the whole chra will swapp, but i don't think just the cold wheeel will swapp

[benflynn]

13c is a radial wheel and 15g is like a garrett, looks like a t3 wheel

[benflynn]

2649 greddy 15g