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 Post subject: Convertor Knowledge
 Post Posted: Sat Jun 03, 2006 6:20 am 
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Joined: Sun Apr 30, 2006 6:20 am
Posts: 357
Location: Wodonga, Australia
Hi Guys

Could you guys give me some knowledge of Covertors.

I have a Nitrous convertor with a stall of 5000 rpm
I only know the basics like what the stall speed is.
Apparently my convertor is tight, what does this mean and also what do they mean by convertor slippage and what does all this mean at the track.

Your knowledge would be greatly appreciated
Trev

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 Post subject: Re: Convertor Knowledge
 Post Posted: Sat Jun 03, 2006 7:53 am 
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Joined: Tue Apr 18, 2006 7:03 am
Posts: 1444
Clinker wrote:
Hi Guys

Could you guys give me some knowledge of Covertors.

I have a Nitrous convertor with a stall of 5000 rpm
I only know the basics like what the stall speed is.
Apparently my convertor is tight, what does this mean and also what do they mean by convertor slippage and what does all this mean at the track.

Your knowledge would be greatly appreciated
Trev


If your convertor is considered tight, a higher stall speed than what you are getting is desired
Convertor slippage is whats lost in a non lock up convertor, the difference between crankshaft rpm and what the trans input shaft sees.

What diameter converter do you have ?


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 Post subject:
 Post Posted: Sat Jun 03, 2006 8:18 am 
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Joined: Wed Apr 19, 2006 6:43 am
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Location: Tell City, IN
Let me throw something in there... I have a friend getting his PTC converter freshened up and the converter is too loose on launch but good as far as flash RPM so they are tightening up the STR and keeping the same flash stall rpm as before..he got it back yesterday. We'll see how it worked. :-k

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 Post subject:
 Post Posted: Sat Jun 03, 2006 8:29 am 
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Trev your N2O converter is setup different from a regular verter. They make the stall to suite the N2O shot not the regular engine power. Yes, that verter will be tight without the N2O shot but should be correct on the bottle! I have one setup that exact same way. Stalls at 5k on motor and about 5500 on the bottle. So, it's kinda like you can't have it both ways! On the bottle it's right, off it it's not!

On my engine now, without a N2O shot, the verter I'm using for that combo stalls at 5800. I leave the line on the brake at 5800, it shifts at 7k and is trapping at 6k in the eight mile. So in reality, this verter is a little too loose as I probably needs to be at 5500 or so. We have this one, it's in the car and I will run it this summer. About the only place I see it as being a problem will be if I decide to go quarter mile racing. I might need a tighter one for that.

So, the old saying that you "can't have your cake and eat it too" applies here! =;

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