('06-'08) TD04 11 Blade Turbine Wheel - Subaru Forester Owners Forum
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post #1 of 6 (permalink) Old 04-10-2019, 01:42 PM Thread Starter
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Join Date: Jan 2011
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TD04 11 Blade Turbine Wheel

I am currently rebuilding my turbo. According to ARD Tuning their 11 blade turbine wheel delivers a better top-end with a marginal loss in spool time (300 RPM):

11 Blade TD04L Turbine Wheel

Their product looks very similar to that of the TD04L-4-12T2-VG used on VW Crafter 2.5 diesels and Ford Transit 2.4 Diesels:

https://www.ebay.co.uk/p/Genuine-VW-...01c/1661465143

More affordable versions are also available:

https://turbospareparts.eu/en-detail...ine-wheel.html

So I bought the components at a local supplier whose website lists the turbine wheel and shaft for R 600 ($ 43 at the current exchange rate).

Below are pictures of my old turbine and compressor wheels next to the new ones. The new parts are on the left in all pictures.

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Last edited by Otterjasie; 04-25-2019 at 11:31 AM.
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post #2 of 6 (permalink) Old 04-10-2019, 03:11 PM
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My opinion ... why bother.

The TD04 is a tiny turbo, upgrading it won't change that fact. If you do swap in the modified turbo you WILL want/need a tune, so at that point you might as well have upgraded the turbo to a VF or similar, and get some real gains. Even the VF is small for a 2.5L, don't get caught up worrying about spool with these little turbos, it is such a non-issue. Maybe if you drive off-road and need low end grunt, and only then maybe.

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post #3 of 6 (permalink) Old 04-10-2019, 11:22 PM Thread Starter
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Purely for curiosity's sake

I am rebuilding the turbo in any case to eliminate any possible oil leaks while I am rebuilding my engine and tuning the car afterwards. So to add a little experiment at low cost while I am at it does not seem too bad.

My turbo has a flanged connection to the intercooler, so I am limited as to second-hand replacements/upgrades and VF52's are not widely available second hand in South-Africa...

Last edited by Otterjasie; 04-10-2019 at 11:31 PM.
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post #4 of 6 (permalink) Old 04-11-2019, 11:39 AM Thread Starter
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Quote:
Originally Posted by northman View Post
Maybe if you drive off-road and need low end grunt, and only then maybe.
Some evidence below... (Bloody traction control that reactivates when you switch off and start again... )
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post #5 of 6 (permalink) Old 04-12-2019, 07:33 AM
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Quote:
Originally Posted by Otterjasie View Post
...VF52's are not widely available second hand in South-Africa...
All you have to do is make friends with someone in the states, I see VF52 for sale often.
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post #6 of 6 (permalink) Old 04-25-2019, 09:52 AM Thread Starter
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For reference, the information on the box of the 11-Blade turbine wheel box and the 16T Compressor wheel box.
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