Turbo Your Turbo?

[Asureyez]

I found this MOD on the web and wonder if anyone knows much about this process and what if any effect is has had on Cummin 6C's

WWW.TURBOBLUEPRINTERS.COM

If such work could tease another 8-12 % improvement in power and earlier boost from the turbo, fuel efficienty should improve and torque should improve dramatically.

????

 

[PlayDate]

Chad,

I am always fascinated how sometimes small improvements can reportedly have big gains. I am not a diesel guy so others should way in on this as well.

It is really hard to see how blueprinting a turbo would result in a 25% gain in efficiency as they claim. Maybe if the turbo was missing a blade or two, but then the question becomes what improvement in end boost is there to the combustion chamber. Raising combustion boost pressure has offsetting dynamics which result in diminished returns with higher combustion pressures.

Most turbos also wastegate the pressure at some pre-established point. Blue printing would certainly help below this point but not above it.

Seems like a reasonable thing to do if you are doing a rebuild. I'm not sure it would make sense just by itself.

-John

ps. Did you get the Rudder Indicator installed?

 

[Asureyez]

Waste not Want Not

Thanks John,

I guess the old adage of being too good to be true is why I asked the knowledgeable folks here. I doubted such a whopping improvement and throttled back my thinking to 8-12 % .
The inventor claims the turbos original design widens as the internal parts are corroded away by heat allowing drops in pressure.

What he claims to do is to remanufacture the venturi to very close tolerances to not only correct, but imporove on the origional design. But you're right, if he pressure is too high, its lost anyway. Ummm Good point.

What had ocurred to me was that by simply packing more air intot he cylinder to be compressed doesn't mean the injectors will add more fuel to use increased amounts of air. Could possibly cause the engine to run too lean ...

 

[Skip]

I did not think that the Holset turbos in the 2003 C series were wastegated..am I wrong?

thks
Skip

 

[fwebster]

The savings gain claimed seems pretty aggressive to me. I like the idea and the theory seems sound, but you really cannot judge the value until you know the cost.

Turbos are expensive, so my guess is that this isn't going to be a $50 add on................

 

[PlayDate]

I did not think that the Holset turbos in the 2003 C series were wastegated..am I wrong?

thks
Skip

Skip,

As I mentioned, I am not a diesel guy. Take a look at this link:

http://www.holset.co.uk/files/2_5_1_2-wastegate.php

It should be pretty obvious on your turbo if it has an active wastegate. I have seen turbos without wastegates. In those cases engine rpms are limited electronically which in turn limit the turbo's speed.

-John

 

[Skip]

John,
Thanks for posting the link! I do not recall seeing a wastegate assembly on my turbos, but now I have something else to look for and learn about in the engine room.
thanks again

Skip