What's the difference between a 15g and 16t

[si850r]

I really dont know........

What does the 'g' and 't' stand for???

I know its not gin and tonic.....

[T5frankie]

my saab has a 15t

[T5frankie]

its just the different names and sizes of the compressor wheels

[Dangerous Dave]

Apart from some of the range (12T) from the 13G upward the difference only seems to be that the G suffix compressor wheels are flatback, and the T suffix wheels are superback.

[jardon]

All Mitsubish TD04 range turbos fitted to T5's have the same size exhaust housing and turbine wheels - hence they all start TD04. The exhaust housings are available as angled or straight flange to bolt up to the downpipe. The compressor codes on T5's are 15g, 16t, 18t, 19t and in that order they have larger compressor wheels - though the compressor housing is the same size externally on all. All hot sides will fit all cold sides but as stock the 15g had a straight flange exhaust housing.

[si850r]

so is it worth upgrading to a 16t from a 15g??

What would the noticeable differences.

[Volvostorm]

Found this as well:

Mitsu turbos:

Mitsubishi uses TD04, TD05, TD06, ...to designates turbo housing.

For example, TD05H-16G 7cm^2 is a turbo with,

TD05 turbine housing with 'H' style turbine wheel. There are S, SH, H... style of turbine wheel/housing.
16G compressor wheel. 16 is the size of the wheel, 1.83 inducer, 2.37 exducer. There is no direct correlation between MHI designation and actual physical size of the compressor wheel. G is the style of wheel (uneven height of blades). C, B, T style wheel's blades have the same height. Blades are equally spaced, but the number and pitch of the blades vary between models.
8cm^2 is referring to exhaust discharge area in the turbine housing. More specifically, it is the smallest cross-sectional area of the scroll, turbine housing. Very similar to Garrett turbo's A/R. The smaller number means faster spool-up but more back pressure at higher rpm. Bigger number means longer spool up but less back pressure, thus more top end power.

[si850r]

it kinda makes sense now....
a 15g will give faster acceleration then?
a 16t faster top end?

[Volvostorm]

it kinda makes sense now....
a 15g will give faster acceleration then?
a 16t faster top end?

That's it basically :)

[si850r]

a 16t with an mbc would be as quick as a 15g but the 16t would be better top end?

[Volvostorm]

After a certain point, all turbo's 'stop' producing boost, and just blow hot air.

Can't comment on a MBC, I don't use one

[jardon]

so is it worth upgrading to a 16t from a 15g??

What would the noticeable differences.

If you are binning the 15g because it's knackered then fitting a 16t as a straight swap will make some improvement but perhaps not a lot.

Fitting a 16t from a phase 2 T5 that has a better flowing angled flange exhaust housing would make more of a difference. This means getting the angled flange downpipe to go with it or fitting a 3" race cat performance downpipe. Maybe bigger injectors too if you go with the 3" down pipe.

The further you deviate from stock the more you stand to gain but a suitable map is vital or the new hardware is not performing optimally.

So, depends on your long term goal I guess. If it's just a straight swap and 16t's are no more costly than 15g's then why not. Will the difference blow your socks off if just a straight swap - probably not.

[Joolz_850R]

So what is reasonable to expect out of the 15G then? What can you or should you change to get the best out of the 15G before needing to increase the compressor size?

[jardon]

So what is reasonable to expect out of the 15G then? What can you or should you change to get the best out of the 15G before needing to increase the compressor size?

Just an example of what is possible with a 15g an MTE map and breathing mods:

http://forums.t5d5.org/topic/4422-a-dyno-day-with-a-difference-22nd-november-2008/page__view__findpost__p__59640

You would need to dig deeper to find out what those mods were but you get the idea.

[JelT5]

Wow! That's a really good result from a 15g.
I think Smithy's had similar from a 15g?

[smithy]

Wow! That's a really good result from a 15g.
I think Smithy's had similar.

but my car was running on standard ecus and a crap cam but see what happens now mate lol.and its the drive abilty of the car ,my turbo was only just hitting it efficency range and james will find out when he is pushing 1.6 to 1.7 bar threw the same turbo lol.i have swopped a 15g to a 16t on a 850t5 before and it made a massive difference in mid to top range and the car was alot faster

[smithy]

Wow! That's a really good result from a 15g.
I think Smithy's had similar.

that is good power from a 15g though but i think another member had over 300 bhp with a 16t aswell

[kee1173]

I have a V70 T5 Me7 Auto on a 98 what turbo has that got? And also i have a V70R Auto 97 does this have the same Turbo, because the R feels a lot quicker and more powerful than the T5, to be honest i thought the R has a bigger Turbo but thought i would ask?

[smithy]

I have a V70 T5 Me7 Auto on a 98 what turbo has that got? And also i have a V70R Auto 97 does this have the same Turbo, because the R feels a lot quicker and more powerful than the T5, to be honest i thought the R has a bigger Turbo but thought i would ask?

both autos have a 16t mate its only the manual that came with the 18t pre me7 and the 2.4 r me7 came with a 19t .its proberly the map that is slightly different on the v70r

[LiamT4]

I have a V70 T5 Me7 Auto on a 98 what turbo has that got? And also i have a V70R Auto 97 does this have the same Turbo, because the R feels a lot quicker and more powerful than the T5, to be honest i thought the R has a bigger Turbo but thought i would ask?

Did you ever find out if your v70 has the 5spd auto?

[kee1173]

I did, It has the 4 speed box.....but just has winter mode on selector...sure if i remember right L, 2, 3, D or L, 3, D one of them 2 does nt have a 4 but also sure i saw it somewhere but with the drugs i am on at mo, imagine allsorts...LOL cheers mate

[kee1173]

both autos have a 16t mate its only the manual that came with the 18t pre me7 and the 2.4 r me7 came with a 19t .its proberly the map that is slightly different on the v70r

Yes, the R is Pre Me7 ( has throttle cable) where as the T5 has ETM (ME7)
Just that the R is much more aggressive, sounds and feels so much faster than the ME7.....Think what it is is the ME7 T5 is much quieter and smoother and only comes alive on full kick down where as the R on idle has a burble, with normal driving sounds like a performance and on kickdown well all i can say is she is a pepperami....they are 2 very different cars

[jardon]

I have a V70 T5 Me7 Auto on a 98 what turbo has that got? And also i have a V70R Auto 97 does this have the same Turbo, because the R feels a lot quicker and more powerful than the T5, to be honest i thought the R has a bigger Turbo but thought i would ask?

Agree with Smithy - both 16t's. The 19t appeared only on 2000 model year auto R's and the Phase 2 R's all have KKK's.

This is the 16t'd MTE mapped car that Smithy mentioned - same dyno:

http://forums.t5d5.org/topic/4422-a-dyno-day-with-a-difference-22nd-november-2008/page__view__findpost__p__59532