What RPM should i launch at on MT E/T streets??

19mustang95

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I just picked up some 15" MT E/T strrets from a friend of mine, suppose my tach actually works for once :rant:.....what RPM should i launch at?

last time i went to the track, i launchd at around 2000 with 18" street tires and didnt get any traction in first...
 

Stopsign32v

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I used to leave at 6,800rpms with about 3psi of boost too...but that was on Drags. :dunno:
 

19mustang95

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Stopsign32v said:
I used to leave at 6,800rpms with about 3psi of boost too...but that was on Drags. :dunno:


i think my rev limiter will kick in before that happens... ???
 

Julian Moore

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What mods are done to the car? Stock or built rear? I would run 14 psi and start at 3500 rpm. See if it bogs..if it does..move it up.
 

19mustang95

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my mods are longtubes, o/r h, flowmasters, UD pulleys, CAI, and a short shifter....
 

Julian Moore

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So I guess it's a stock rear..I would not launch much past 3500 rpm, as the tires will hit and hit hard. Once you break, install a nice rear and some 31 spline axels....then dump it at 5K. Once the tranny goes, we can upgrade that. :banana:
 

Stopsign32v

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Leave off the limiter...if the rear end breaks get a better one. If it doesn't, get ready to snatch the next gear and drive your car like you stole it. :behind:
 

ALITL8

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drop the tire pressure to 14-17psi and start launching at 3000. im on the Nitto's and i spin at 3500 for a 2.1 60'. if i launch at 3000 it bogs a little (very little) than grabs hard and so far my best is a 2.0 60'.

the way you heat the tires and track prep have a lot to do with it as well... we get crappy track prep at our track :santa_angry:
 
ALITL8 said:
drop the tire pressure to 14-17psi and start launching at 3000. im on the Nitto's and i spin at 3500 for a 2.1 60'. if i launch at 3000 it bogs a little (very little) than grabs hard and so far my best is a 2.0 60'.

the way you heat the tires and track prep have a lot to do with it as well... we get crappy track prep at our track :santa_angry:
+1

spin as little as possible
and get into the power band as quick as you can

get a good 60ft and then its all car the rest of the way
 

Nacho

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I just started going to the track so I need practice. My first pass ever with the e/t streets, I cut a 1.78 launching at 4500rpm. I don't have a built rear end but I have tubular upper/lower control arms so that helps out. Practice does make perfect. I was able to cut a 1.688 launching from 4500 so I'm keeping it there. Nothing has broken yet, so I'll keep it there. This is so you can use it as reference. :thumb:
 

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