Hi all ,
just another thinking out loud question regards converters .
When using a mechanical diode/sprag has anyone noticed any difference to regular sprags ?
I know the mechanical is considered stronger, almost unbreakable .
Street/strip usage , transbrake .

Tex

My cuda used to kill a "super" sprag every 100 runs or so. Went to a mechanical diode and no more problems.
Last converter I had done we went spragless. Used to be that the spragless converters would slip a lot up top, but that doesn't seem to be the case anymore.

We were chasing an issue with the car a few years ago. Inconsistent ET's and reaction times. Lost MPH etc..... We changed ignitions, fuel pumps etc..... Finally we started to look at the symptoms of a failing sprag in the converter. Called Transmission specialties and discussed it with them. They convinced me to buy one of there super 8 9" spragless converters........One of the best purchases I have ever made! ET, MPH, Consistency all came back!

thanks guys ,
i had been having 60 move around which is why i pulled trans . Only just got it back in last week . When i sent converter back to USA for service it came back with a mech diode and pretty much everything replaced but no explanation . There was some metal in pan , trans builder said it came from converter as rest of trans was good apart from wear on stator support (?) splines .
If it picks up to the 60 i expect i should see better ET maybe a pinch of MPH if sprag was slipping

Tex

I just went through this metal went through the whole transmission but inside was good, snap ring broke in the converter and destroy it . I have a new converter(actually2 now) and the 1 in the car has a mechanical diode seat of the pants feels great

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I just went through this metal went through the whole transmission but inside was good, snap ring broke in the converter and destroy it . I have a new converter(actually2 now) and the 1 in the car has a mechanical diode seat of the pants feels great [/quote]

Converter was 5700 then with engine top end change 6000 .
Explained this also and had it tightened back towards the 5700 . Definately feels better on street , firmer/tighter like my 5000 vert in spare trans . Now all i need is the sanction legal BS to be done locally so we can get back on track .

Tex

Any time slips to look at yet?
If so what are the 60 ft. times now compare to before?

Cab , there is legal argy bargy going on over track sanction now , after 3 1/2 months closed . I kind of doubt any passes here in Sydney till end of year at earliest . I am racing interstate in December so its a long wait to know and 13/14 hour drive to get there.

Tex

Bracket guys like the spragless deal I'm guessing since consistency is paramount. Conventional sprags change as they wear, fluid viscosity ect. The old diode is a ratchet so they're the same even when you screw up a couple elements. I run 9 elements in most, and you can take them apart and inspect them

I don't really know the answer to your question.
But when I built a PG for my "new" Daytona, I asked Ultimate Converter Concepts to use a mechanical diode (and a Turbo style converter).
Here is a picture from the World Wide Web (www) showing different versions of mechanical diodes.

Well looks like t&t this friday weather permitting .
Sanction body ok'd by state govt , own track , legal argy bargy in court same day .
Crossing my fingers though sure to be a bunfight due to lack of racing , i hope there is a number limit , and as usual the hero time trialists .
I want to try leaving a little lower rpm .

Tex