2-6 rod failures in "drilled" or stroker cranks?
#1
Race Director
Thread Starter
2-6 rod failures in "drilled" or stroker cranks?
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?
I don't know of a "stroker" with bearing failure...even those that are heavily tracked.....
Other thoughts-opinions?
#2
In Your Face, Ace
Rennlist Member
Rennlist Member
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.
#4
Race Director
Thread Starter
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?
#5
Race Director
Thread Starter
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
#7
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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.
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#9
Race Car
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
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!
#10
Race Car
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.
#11
Race Director
Thread Starter
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....
#13
Former Sponsor
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?
I don't know of a "stroker" with bearing failure...even those that are heavily tracked.....
Other thoughts-opinions?
#15
Former Sponsor