bogging at the line

sheff2720

New Member
Nov 30, 2003
182
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Horsham, PA
today was atcos last day of the year and i wanted to get a few runs in to see how the new engine combo ran.. i had just finished up installing a new tranny and clutch and they just broken in enough today.. so i hadnt driven the car hard at all with the new clutch and tranny before the track runs and wasnt really used to how the clutch grabbed under pressure.. so i pull up into the staging lanes do my burnout and go to launch.. i launched at about 1500-2000pms (this is on street tires) and totaly bogged down the engine, to the point where it almost stalled.. i ended up with like a 2.98 60ft.. so on my second and last run of the day (track was packed) i knew i was going to launch harder, so i dropped the tire pressure alittle and did a big smokey 2nd gear burnout.. get to the lights, rev it up to around 3000, drop the clutch, and it bogges really bad again.. that time my 60ft was a 2.62.. i was really suprised because i thought it would just burn the back tires.. i never thought i would have to launch higher than 3000 to avoid bogging on street tires (the tires are futura 265/50s) what the hell am i doing wrong? is the clutch to much for the engine? the power is there, it trapped at 108, and ive driven the car to 2.03 60ft when it was pretty stock.. sorry for such a long post but i was really pissed about today
 
Call it the curse of the F cam and 3.55's. The F doesn't work below 3k and will likely fall on it's face unless you ride the clutch to 2500rpm before it's all the way enagaged. The 3.55's require more torque to get moving. A stock motor puts out more torque than your's below 2000rpm. You just need to learn to drive your new combo. The futura's do hook as well.

Jamie
 
Hey man...I was there today, too and saw your car. Only caught a few glimpses of it, but it looks like it's in great shape!

What did you wind up running today? My three runs were pretty close to what's in the signature, only with a tenth better 60' (but no improvement in ET - go figure lol).
 
NYC LSC said:
Hey man...I was there today, too and saw your car. Only caught a few glimpses of it, but it looks like it's in great shape!

What did you wind up running today? My three runs were pretty close to what's in the signature, only with a tenth better 60' (but no improvement in ET - go figure lol).
i saw your car there too.. glad to hear you atleast got a better 60.. my second run ended up beeing a 14.04 @ 108 :nonono:.. which was just about the same as my run when the car was almost stock (except the trap speed was like 98):bang:.. but as you know we didnt have to many chances to try different tecniques, and unfortunatly both of my launches were terrible, and those were also the first two times ive launched the car on the new clutch and tranny.. but we all have our bad days.. next year will be better
 
Absolutely. Always next year. :D

And yeah, the down time was unreal today. I think I have hypothermia from sitting in the car for hours before running again. LMAO

Anyways, enough BS from me. Maybe I'll see ya down there next year and good luck, dude. :nice: