Borg Warner EFR 6758 IRL
 

Have another one for sale.

Hi guys,

So I have an IRL 6758 for sale. IRL turbos; so lightweight comp housing, more compact turbine housings, aluminum CHRA...ridiculously light turbos.


The 6758: asking $1000 OBO
It had a tick of side to side shaft play (no thrust play) so I tore it down to inspect and you'll see results in the pics. It has some itty bitty dings, which you might have a hard time seeing. No signs of wheel to housing interference, so it isn't bad. Seriously very little side to side and normal thrust play. No signs in the turbine sign of oil abnormal oil consumption. It didn't have a mileage tag but having had over a dozen of these turbos, they all are mileaged out with the highest being 3800 miles and most around 2800-3200 miles.

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-Micah

More 6758 inspection pics:

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Hmm.. Is that hand engraving done on all Borg Warner turbos from Borg? Not exactly a piece we want to add stress concentrations on.

That's not an area of high stress concentration.

You are mixing high temperature with high stress............neither of which with this engraved portion will have a negligible affect on.

Hmm, that's funny I don't believe I referred to that (or any) area to be a high stress area.. Read, instead of filling my mouth with your words.

But if you are comfortable with quite possibly the best, most advanced, ~$1000 turbocharger on the market, being engraved with a hand held engraver.. then be my guest. Only wanted to know if it was this way from BW.

Perhaps you can elaborate what you mean by:


What garbage are you trying to back pedal on that justifies this conversation. That area is of little interest, and certainly will not feel any effect from some superficial dimples during or after thermal cycling. But before I put words in your mouth, why don't you finish vomiting whatever alternative facts you've got.

EDIT: Bump for Micah

Y'all better not crap up this guys thread.

The guys that installed/tagged/used this forgot more about turbo's than you'll ever know. This is not some pc-pro owning retard with a dremel in the back of his garage drawing on his turbo.

This is also a good price for an EFR.

So I suggest you move on if you're not interested in buying it.

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.........And that simple quote demonstrates your ignorance.

As a little background for your assistance: These are engraved for Indy Car teams by Borg Warner themselves as a way to track these turbos as they are timed out after a certain mileage regardless of use. But please, do tell Borg Warner and/or the Indy teams they have no idea on what they are doing when this was engraved and they purposefully engraved in this particular portion of the turbo to willfully cause an increase in localized "stress concentration"........ Function over form. Things don't necessarily have to look "good" for them to perform correctly.

Its a turbine discharge with very high energy and high movement exhausted gases. The gases, due to the high velocity, will cause very minimal stress risers (or in effect, perpendicular pressure in respect to flow path) in that particular area and the gases would have to move from path of least resistant to populate the engraved portion. Apart from a very minimal rise in temperature for that particular area, its a non issue.

EDIT: People have beat me to the punch lol

EDIT 2: Great price from a great seller!

Uuuuugh. Want. How difficult is that three bolt inlet to get hold of?

The OP should be making some soon to go with it. Otherwise shoot me a PM and I can get you info of someone who might be able to make you one. Not sure what my guy would charge though.

If it's a thing that needs to be made,and there is a CAD available of the flange, I don't mind getting one cut. Was hoping there was just some dumb SR20 style elbow that could bolt on.

1) You have to have stress before you can have a stress concentration. This has neither.
2) The definition of a stress riser is a feature that reduces the area over which stress is distributed, such as a corner or rapid change in material thickness. Such features must be proportionately large relative to the thickness of the part in order to have any effect on strength, so the tiny "corners" created by the engraving do not qualify.
3) The only measurable effect the engraving could have is work hardening the surface in those areas and creating some minute residual compressive stress on the surface.

Pm sent

Guys, all of Penske and Andretti Green's turbos had these. All of these turbos were run on Indy cars...I'm sure it'll handle anything you throw at it. I say this knowing that you'll kill the turbine wheels from EGT's before you crack that turbine housing.

We ran 6258's on our Roush Yates Daytona Prototype engines. We learned a great deal about them.

What A/R are these turbines? Is that what the .85 signifies in the part number? Care to trade for any valvetrain parts?

0.85 responds to A/R; if I recall, there is no other size for the B1-framed EFR that comes in V-band

I dont suppose you could measure the side play in thousandths? I am contemplating between this or say a new precision turbo, but EFR!! Me want bad!

I had 4 of the IRL 0.64 V-band housings. Now I'm down to one...that I'm keeping for me. I think I sold all the rest of them on this site actually.

You want trust and axial? Just want it compared to my other ones or what did you want as a standard?

:eek::eek::eek: