IcemanG17

With yet another 2-6 implosion on the list (besides mine) it got me thinking.....has anyone with an improved "drilled" crank (either stroker or drilled stock) had 2-6 rod bearing failures?

I don't know of a "stroker" with bearing failure...even those that are heavily tracked.....

Other thoughts-opinions?

Abby Normal

You should start a poll and include as to whether it was street driven or track driven. I can't recall the 2-6 failure happening on a street car, although it may have happened and I missed it.

Tom. M

I believe there were some 2/6 failures on cars in Europe..Autobahn high rate of speed....

IcemanG17

But those were in stock 928's.....GTS's come to mind Or did a european stroker loose an engine on the autobahn?

I can't think of a stroker having rod bearing failure..some have failed for other reasons after years of on track use....

I also don't know of a "drilled" crank stock or GTS crank that has had a failure?

IcemanG17

I think lighweight 928's with larger R comps or slicks is a huge contributing factor on this too..... When I tracked sharky on street tires 235 front 265 rear and took the same corner I do in the widow, but much slower I hardly saw any oil pressure drop....using the same oil....vs the widow which would drop to 2.5 bar

Lizard928

Without a drysump, and maybe an accusump they will fail when air is ingested.

worf928

IIRC, there was an NE racer (now retired) that did toast a drilled-crank block on the track. However, in that instance there was a problem with the installed accusump.

terry gt

I just pulled my stroker apart , the rod bearing are perfect 7000 + rpm . the rest of the motor is not.

James-man

Sustained lateral G forces = bad

Skinny tires = little to no maintenance. But you have to get used to watching a lot of other cars pass you.

225 / 245s and no raciing slicks = 2-6 starvation resistance

Since sustained lateral G forces = fun, well, ya gotta do what ya gotta do.

Good luck nailing the solution down. I hope stroker is the answer. Your car will be amazing with that kind of HP!

James-man

I have around 45 track days on my street 928. 255 is the widest I have ever run. If you put wide stickies on a street car I would bet the car would suddenly be at risk. But not as muck as a track prepared car.

IcemanG17

I agree the widow would be a BLAST with an extra 200hp.....but I don't think my marrige could support it right now Then you have to worry about how long the tranny will last too....

atb

Would love to add 16v'rs to the inquiry.

GregBBRD

They still fail...I've seen plenty. I keep telling you guys that there are 4-5 causes. Drilling only solves one.

cold_beer839

Greg,

Is there any way to completely protect the 2-6 area on the crank?

GregBBRD

Besides never starting the engine?