So I'm going to need to tack it to the track and play with it, but is there anybody else out there using a n/a triple disc converter and using the lock-up to keep from blowing through the converter on spray? I have lock-up set at 97mph but when spraying I feel it blowing through the converter tell it gets to lock-up and then it pulls very hard!
I'm thinking locking the converter sooner might be a good thing for spray because when it's blowing theough the converter obviously thats going to hurt my times... Please share your info! The converter is a circle d 5c btw

 

I thought the 5C is a nitrous friendly converter? I have the 2E which is Circle Ds NA converter. Is this a multi disc converter? Interested in seeing what others have to say.

 

It is a multi disc and it is for more of a n/a application I believe. The 5c is 400-4200rpm. I think the 4c is a little tighter and what they recommended for n20, but at the time I was all about running 10's n/a so I wanted to get as loose as I could to get the 60ft down and I figured I could just lock the stall for when I spray, but now I'm trying to figure out how soon I should lock it for the n20.

I'd like to lock it as soon as possible, but there must be downsides to locking the converter early or everyone would be doing it? Or maybe not.. I have it set to lock right now at 97mph both on my n/a tune and my n20 tune. I would like to lock it in second gear if possible

 

If you want to lock up a converter at WOT you'll need a "triple disk" or multi converter which sounds like what you have and is its intended purpose. You can experiment with lockup tuning at the track all you want.

Will you be fine? I'm not quite sure but that's the way it was explained to me before. I hear you on the NA goal but once you hit it you're bummed because on spray your setup isn't as efficient

 

Unless you're shifting before the traps I doubt locking has
anything for you. Efficiency goes up but torque multiplication
takes a hit - which gives you the best result (leaving aside
mechanical failure)? This here, varies a lot with the converter
design (how much torque mult remains at trap RPM/MPH?).
On a higher stall speed converter, probably a significant
amount (was obvious w/ my 3500/2.0 converter, how much
acceleration dropped from unlocked to locked @ 5000RPM).

 

If you're not blowing through, lockup wont help, it may actually slow you down. But since you are, it should help. Only way to know when is to play with it. Ive always heard not to run locked through a shift however due to it can damage the trans. Dunno how much truth there is in that.

 

Damn should have went with a nitrous converter I guess. But I should pick up locking it in third on n20 I would think still....