Can you I.D this turbocharger, and what PSI is the wastegate set at?

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cardriverx - 26 Jun 2007 16:58 GMT

I need to know the wastegate setting for this turbo. I think its off
300

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cardriver

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cardriverx - 27 Jun 2007 02:15 GMT

anyone???

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cardriver

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-->> T.G. Lambach <<-- - 27 Jun 2007 03:07 GMT

Can't SEE the picture(s)! Most of the old (617.95X) 300D Turbos' boost
was set at about 11 psi.

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cardriverx - 27 Jun 2007 05:08 GMT

it looks just like this on

'eBay Motors: MERCEDES PARTS = TURBO (item 130128120280 end tim
Jul-01-07 09:23:47 PDT)
(http://cgi.ebay.com/ebaymotors/MERCEDES-PARTS-TURBO_W0QQitemZ130128120280QQihZ00
3QQcategoryZ33742QQrdZ1QQcmdZViewItem

but I dont have the flex thing for the downpipe

ALSO, is the wastegate adjustable at all

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cardriver

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-->> T.G. Lambach <<-- - 27 Jun 2007 06:55 GMT

The Garrett turbo's wastegate CAN be adjusted BUT one needs to remove a
coiled spring to access the adjustment. Some owners are very sorry they
pulled that spring from its grooves for its nearly impossible to replace
while the turbo is on the motor and the motor is in the car.

You may see a bit more power from an adjustment but its a marginal
increase. At 16 psi boost the engine's safety features kick in and the
fuel supply is reduced.

These turbodiesels made about 40 HP/Liter, good for their time - gas or
diesel - so there's not a lot of potential upside to "tuning" these.

And don't put a turbo on a nonturbo engine - unless you want to kill it.

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trader4@optonline.net - 27 Jun 2007 11:47 GMT

On Jun 27, 12:55 am, "-->> T.G. Lambach <<--" <"T.G. Lambach at
NoHamorSpamcomcast.net"> wrote:

> The Garrett turbo's wastegate CAN be adjusted BUT one needs to remove a
> coiled spring to access the adjustment. Some owners are very sorry they
[quoted text clipped - 12 lines]
> ? 2007 T.G.Lambach. Publication in any form requires prior written
> permission.

Not to mention the question of boost pressure setting of a turbo in a
picture, without reference to anything about the car, engine or lawn
mower it's going in seems very strange.

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Richard Sexton - 28 Jun 2007 08:30 GMT

>The Garrett turbo's wastegate CAN be adjusted BUT one needs to remove a
>coiled spring to access the adjustment. Some owners are very sorry they
>pulled that spring from its grooves for its nearly impossible to replace
>while the turbo is on the motor and the motor is in the car.

Oh geez, I wouldn't try this on a turbo in the car.

>You may see a bit more power from an adjustment but its a marginal
>increase. At 16 psi boost the engine's safety features kick in and the
>fuel supply is reduced.

Yeah but on an angine that only has 120hp every little bit counts. Some are
set pretty low its been observed. If the turbo is out, asjust it. If it's in
the engine it's probably more trouble than it's worth.

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cardriverx - 28 Jun 2007 01:54 GMT

I just need to know what the wastegate is set at, and if it i
adjustable/ how do I take it off

--
cardriver

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Richard Sexton - 28 Jun 2007 08:32 GMT

>I just need to know what the wastegate is set at, and if it is
>adjustable/ how do I take it off?

http://articles.mbz.org/engine/diesel/turbo_adjust/

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Chas Hurst - 28 Jun 2007 18:36 GMT

>>I just need to know what the wastegate is set at, and if it is
>>adjustable/ how do I take it off?

There are a number of adjustable regulators available that are fitted to the
pressure line going to the waste gate actuator. These can be plumbed so the
boost is adjustable from the drivers seat.
This might be easier than fiddling with that spring.

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Richard Sexton - 29 Jun 2007 03:06 GMT

>>>I just need to know what the wastegate is set at, and if it is
>>>adjustable/ how do I take it off?
[quoted text clipped - 3 lines]
>boost is adjustable from the drivers seat.
>This might be easier than fiddling with that spring.

*IF* the turbo is off the car it's stupid easy to
fiddle with the spring.

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cardriverx - 29 Jun 2007 03:46 GMT

I know, but how do you get the wastegate that is on it now, off? I trie
unscrewing it.. but it wont budge. any ideas

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cardriver

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cardriverx - 29 Jun 2007 19:15 GMT

Alright, it seems its a garrett ta0301 or tb0359. Anyone know? what i
the wastegate set at? How does it come off

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cardriver

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Richard Sexton - 29 Jun 2007 20:44 GMT

>I know, but how do you get the wastegate that is on it now, off? I tried
>unscrewing it.. but it wont budge. any ideas?

Sounds like it's seized. Try penetrating oil and heat.

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Richard Sexton - 28 Jun 2007 08:27 GMT

>it looks just like this one
>
[quoted text clipped - 3 lines]
>
>but I dont have the flex thing for the downpipe.

The above part if for 6 cylinder diesels.

Here's a page which shows the 5 cylinder one:

http://rs79.vrx.net/works/photoblog/2004/Jun/16/

Looks like it has the flex pipe thing.

You can adjust thw wastgate. They usually comeunder spec fro the
factory. Yuo can tighten them down all the way and still perhaps not
get it to the full factory spec so most people just tighten them
down all the way and call it a day. The overboost protection circuit
will be the final arbitor of boost so don't worry.

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