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Street Auto TC discussion

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CrackedDSM

10+ Year Contributor
3,353
2,454
Dec 17, 2009
Pensacola, Florida
Alright, I'm going to try to word this as best as I can so just bare with me.


I'm building up my 2G AWD Auto, and every DSM I ever own will always and forever be a car I drive on the street more than the track. It's getting a built 9:1 4G64(156mm rods, stroker pistons, etc) to make it more enjoyable around town and to help stall turbos easier...which brings me to my question.


What are the best converters to use for a STREET DSM? I have driven more than a few(and owned) Auto DSM's with a restalled converter, and it just sucked to drive on the street. Punch the gas and there's that noticeable sluggishness to it(almost like driving a big block with a restalled converter, how it 'flashes' up then catches). Compare that to a stock converter where you hit the gas and there's much less of a lag to it, if that makes sense. I want to use my stock converter, but I've been hearing conflicting advice/reviews/threads about it. Some say they are weak and will grenade when you push over 300hp, others say they are fine.



So, please discuss. I'm iffy on this issue because of all the new TC tech out now. Do they have converters that are tighter on the street so that 'lag' or 'flash' isn't there, but can still stall high enough to spool something like an FP Red/HTA76/T3 HX40 without using nitrous or sitting on the brakes for 15+ seconds? Keep in mind, 9:1 4G64, not a 2.0.
 
What you want a converter to do is to flash to an rpm that the turbo operates in. Rolling at 5 mph in first gear is a great example. You can go wot, and wait several seconds to hit full boost with a tight converter, or flash instantly to a higher rpm where the turbo is working.

With a 2.0, and stock converter my fp red went from a quick spooling fun street turbo (on a manual setup), to a absolute dog driving around. This is with the only change being an auto swap, with stock converter. With a 2.3, and restall, it's a street beast. I'm never far from boost now. If I want to, I can have full boost at 30 mph in 3rd gear, at 5000 Rpms. I'll be heating the crap out of my trams fluid, but the car gets up and goes.

The combination of torque from the 2.3, restalled converter, and a 7cm hot side on my red, makes the car extremely fun in town. With the 2.0, and stock converter it felt like first gear was way to tall. Like starting a manual out in 2nd gear.
 
my personal experience with a stock converter, stock 2.0, hx40.. awesome.. there was no hesitation in the boost gauges going from vacuum to boost. if i wanted to actually stall it, it still wasnt an issue. wish i had a video of it but i could get the stock converter to stall higher than 3500 without a problem but it was useless for me because i was fwd. driving on the street in second gear under 3000, i could mash it and with in a matter of seconds i would be spinning tires. that car had 180k miles on it and ran 12.9 at just over 120mph in quarter with a 2.2 60ft. was too hard to not spin. also i didnt shift into 4th because it was too worn to shift fast enough without bouncing off the rev limiter. i dont know how much hp that would be but i would say it would be over the 300hp mark. give the stock converter a chance and see how it works.. ill soon be finding out with a 2.3 street car.

hope that helps
 
my personal experience with a stock converter, stock 2.0, hx40.. awesome.. there was no hesitation in the boost gauges going from vacuum to boost. if i wanted to actually stall it, it still wasnt an issue. wish i had a video of it but i could get the stock converter to stall higher than 3500 without a problem but it was useless for me because i was fwd. driving on the street in second gear under 3000, i could mash it and with in a matter of seconds i would be spinning tires. that car had 180k miles on it and ran 12.9 at just over 120mph in quarter with a 2.2 60ft. was too hard to not spin. also i didnt shift into 4th because it was too worn to shift fast enough without bouncing off the rev limiter. i dont know how much hp that would be but i would say it would be over the 300hp mark. give the stock converter a chance and see how it works.. ill soon be finding out with a 2.3 street car.

hope that helps
 
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