td/tfo numbers and digits explanation

[TimD]

49135-04600

Yet to drive on this, it needs a rebuild as well as my engine so it will be a while!

[5e colin]

49135 - 04500 ( 4cm) 14T

49135 - 04600 ( 4cm) confirmed by TimD 14T unconfirmed

49135 - 04690 14T

49135 - 04700 ( 6cm ) confirmed by 5e colin 13T

49135 - 04780 ( 6cm ) confirmed by 5e colin 13T

[Androo26]

Ive had lots of trouble separating the the core from the housings .... and the best way to do it is apply some heat... works a treat every time.

[5e colin]

androo what code was your turbo with the 4cm housing ??

[Androo26]

Righto Colin Ive just been down the shed and got the facts for you.

4cm housing does indeed have a 4 cast into it on the inside.

Here are the numbers cast on the side. Confirmed. 35-13900 (4cm)

Also this is cast onto it as well (DUCM)

And im almost certain that this is the compressor cover that came off that one as well.

[5e colin]

sweet same 1 as timd will have to source a 500 to confirm al the combos we have

also the 4cm turbos al have a bigger 14t and the 6cm al have a 13t you have the proppeler still there from the 600 ??

Edited July 16, 2016 by 5e colin

[Amjad]

Thanks for this thread, an interesting read for sure. Turns out the one I've recently had fitted is the -04500.

Androo, what do you think the difference in power would be with my current turbo and that of a 4cm/td04 hybrid at say, 1 bar of boost?

[Androo26]

Amjad.--- The 04500 is a fair size smaller than the TD04 in both compressor and exhaust wheels so the expected power out put is always going to be less, but without doing back to back dyno runs its hard to say....

At a guess 15-20kw max power difference.

I think the limiting factor with my setup will be the Exhaust housing for sure... but im hoping to get 160KW at the wheel from it on a Built 5E

Its a daily driven to and from work car not a race car.... well sometimes it is lol

[Amjad]

Interesting, thanks for that! Something to look into if and when this current turbo needs a rebuilt then

[5e colin]

Amjad.--- The 04500 is a fair size smaller than the TD04 in both compressor and exhaust wheels so the expected power out put is always going to be less, but without doing back to back dyno runs its hard to say....

At a guess 15-20kw max power difference.

I think the limiting factor with my setup will be the Exhaust housing for sure... but im hoping to get 160KW at the wheel from it on a Built 5E

Its a daily driven to and from work car not a race car.... well sometimes it is lol

its the other way round no its meant to be a 14T / 700+ is al 13t and 6cm thats the info i gathered so far

[Androo26]

I read that as though he was comparing a 4cm hybrid TD04 (the same as what im running) vs 04500 (wich is a 14T 4cm TF035) according to the above posts ??

Have I got it wrong here ? Whats the difference between a 13T and 14T Anyone ?

[Androo26]

Rightio then lads ive done some data logs on spool up with this 4CM TD04 hybrid im running.

For those that dont know my setup its a rebuilt N/A 5EFE completely stock 9.5:1 comp. Turbosmart 38mm External waste gate. 4EFE Intake manifold.

It runs a GFB Atom bleed valve (very basic) so this is about as slow/ linear to build boost as your going to get with no waste gate trickery at all.

The run was performed in 3rd gear, foot flat to the floor from 2000 rpm till redline 6K

1 psi 2000 rpm

3 psi 2120 rpm

4 psi 2250 rpm

5 psi 2380 rpm

6 psi 2410 rpm

8 psi 2560 rpm I might just add that using a bleed valve the gate at this point is almost all the way open as it going to get. So if it were using an EBC you could still have the gate completely closed if you wanted making use of all the exhaust gas

9 psi 2620 rpm making it spool faster again. But Ive chosen the bleed valve because its more gradual and better for traction. (still awesome response on the street)

10 psi 2950 rpm

[5e colin]

I read that as though he was comparing a 4cm hybrid TD04 (the same as what im running) vs 04500 (wich is a 14T 4cm TF035) according to the above posts ??

Have I got it wrong here ? Whats the difference between a 13T and 14T Anyone ?

as far as im aware 13t is 6cm housing

14t is 4cm housing

friend of mine is going to measure his 600 series tfo compressor wheel i think the 4cm housing turbos use bigger exduseres to aid spool ?? tbc soon

nice 1 androo what is she like top end where does she drop off ??

[Androo26]

I had this on the dyno last week .. Whilst im not going to talk power figures I can tell you that Peak HP was at 5570rpm and peak torque at 4417rpm

At 5600 boost dropped 1 psi so its possible that peak HP may have stayed flat peak till the end.

RPM Range 4E 4cm TF/TD 4E 4cm TD04 5E 4cm TD04

2-3k 16 15 13

3-4k 11 11 10

4-5k 12 10 10

5-6k 15 15 12

Total logs 54 51 45

Here is the log count and as you can see its still pulling well in the upper rpm. 5E for the win thats for sure.

Edited August 13, 2016 by Androo26

[gorganl2000]

very useful info androo26

one of my favorite combinations has always been the 5efye with td04l.....excellent daily car

[MR-2]

Found few new aftermarket TD04 turbos with pictures and prices, HL16T, HL13T, L14T. Not bad prices, any suitable models side of n/a 4E or 5E?

http://www.biltema.fi/fi/Autoilu---MP/Autonvaraosat/Moottorin-osat/Ylilataus/Turboahdin/Turboahdin-2000019974/

[SpikeyJp_68]

Compressor inducer measures 39mm

Compressor exducer measures 51mm

[5e colin]

nice 1 thanks a mill

same size as the 700/780 series it has me baffled as our later 1s are meant to be 13t ???? confused.com again

so whats the diference between 13t and 14t then ha ha ???

[SpikeyJp_68]

It wouldn't be the depth of it would it ? Or is it only dependent on diameter ?

[5e colin]

could be ?? i never measured the hight of them

[SpikeyJp_68]

could be ?? i never measured the hight of them

I'll measure mine today and compare against yours when you get chance

[SpikeyJp_68]

The inducer to exducer measures about 20mm

[5e colin]

seen something there pmed you