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Re: Thumper Carbs?
[Re: mikeysmopars]
#1771228
03/16/15 03:26 PM
03/16/15 03:26 PM
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Joined: Feb 2007
Posts: 1,608
fresno ca
mikeysmopars
top fuel
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top fuel
Joined: Feb 2007
Posts: 1,608
fresno ca
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Finally got to test the new Thumper Carb and wide band set up this weekend and out of the box with. First hit around 9:30 in the morning and went 10.02 with 1.38 60 @ 133 mph. Set the gopro on the guages and showed 12 to 13 wot. Very encouraging for first pass! Next three runs went to crap and went 10.40s & 50s??? checked the plugs and looked lean which that has never been the case with my engine. Did a compression chech, All cylinders were 170 range. scratching my head i poped the dist cap and noticed the screws holding the plate were loose. Tighened them back up,checked timing and was at 24 degrees,went from 95 jets to 97 fixed timing, got one more run and by that time it was afer 3 oclock and 90 degrees and effective altitude as around 2500 feet. Car went 10.07 with 1.39 60 at 132.99 very encouraging just need to do a little more tuning. 
Founder and CEO of the Central Valley Mopar Drag Pack
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Re: Thumper Carbs?
[Re: mikeysmopars]
#1771229
03/16/15 04:17 PM
03/16/15 04:17 PM
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Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
CHAPPER
master
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master
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
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Got mine on. Waiting on my fuel pump filter to get here.  Fuel system is cleaned and ready for fuel when the pre-filter gets here.  Weather is looking better here.
If you like drag racing, support your local track.
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Re: Thumper Carbs?
[Re: CHAPPER]
#1771231
03/16/15 06:14 PM
03/16/15 06:14 PM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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What is your previous best in the same conditions ?
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
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Re: Thumper Carbs?
[Re: deaks]
#1771232
03/16/15 06:34 PM
03/16/15 06:34 PM
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Joined: Feb 2007
Posts: 1,608
fresno ca
mikeysmopars
top fuel
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top fuel
Joined: Feb 2007
Posts: 1,608
fresno ca
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Best my car ran in real good air was 9.98 and 1.38 60 @ 135.Most of my runs have been 10.0 cool air to 10 teens in the heat with 1.40 to 1.44 60 foots. I have since added 20 lbs with exhaust and diaper. I only got two decent runs out of 5 but i'm sure i can get a tenth with knowing where my tune is for sure now. Keep in mind i'm not much of a tuner and i litterally put that carb on, set the idle and ran it as is. What is hard for me is the addition of the pipes for the 02 sensor, Sounds like i have a miss to me. As my friend said after the TNT yesterday, We really need to find a chassis dyno if we want to dial them in right 
Founder and CEO of the Central Valley Mopar Drag Pack
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Re: Thumper Carbs?
[Re: mikeysmopars]
#1771233
03/16/15 06:41 PM
03/16/15 06:41 PM
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Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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Quote:
Best my car ran in real good air was 9.98 and 1.38 60 @ 135.Most of my runs have been 10.0 cool air to 10 teens in the heat with 1.40 to 1.44 60 foots.
I have since added 20 lbs with exhaust and diaper.
I only got two decent runs out of 5 but i'm sure i can get a tenth with knowing where my tune is for sure now. Keep in mind i'm not much of a tuner and i litterally put that carb on, set the idle and ran it as is. What is hard for me is the addition of the pipes for the 02 sensor, Sounds like i have a miss to me.
As my friend said after the TNT yesterday, We really need to find a chassis dyno if we want to dial them in right
How much exhaust was added. IMO, any car making enough powet to run a 10.0 will be hurt by an exhaust system unless its 3.5 or bigger
Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: Thumper Carbs?
[Re: sixpackgut]
#1771234
03/16/15 06:44 PM
03/16/15 06:44 PM
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Joined: Feb 2007
Posts: 1,608
fresno ca
mikeysmopars
top fuel
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top fuel
Joined: Feb 2007
Posts: 1,608
fresno ca
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Added 18 in extensions with turnouts and they are 3.5
Founder and CEO of the Central Valley Mopar Drag Pack
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Re: Thumper Carbs?
[Re: mikeysmopars]
#1771236
03/16/15 06:52 PM
03/16/15 06:52 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Best my car ran in real good air was 9.98 and 1.38 60 @ 135.Most of my runs have been 10.0 cool air to 10 teens in the heat with 1.40 to 1.44 60 foots.
I have since added 20 lbs with exhaust and diaper.
I only got two decent runs out of 5 but i'm sure i can get a tenth with knowing where my tune is for sure now. Keep in mind i'm not much of a tuner and i litterally put that carb on, set the idle and ran it as is. What is hard for me is the addition of the pipes for the 02 sensor, Sounds like i have a miss to me.
As my friend said after the TNT yesterday, We really need to find a chassis dyno if we want to dial them in right
How much exhaust did you put on.. since you put that on
your not apples to apples here... if you put collector
extensions on that in itself can make for the 60'
(how long is your collector now)
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Re: Thumper Carbs?
[Re: MR_P_BODY]
#1771237
03/16/15 07:12 PM
03/16/15 07:12 PM
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Joined: Feb 2007
Posts: 1,608
fresno ca
mikeysmopars
top fuel
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top fuel
Joined: Feb 2007
Posts: 1,608
fresno ca
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MR P i'll take some pix when i get home and post them, Only reason they are on there is for the 02 sensor. I wanted to put them in the collectors but everyone said i needed the extensions so the sensor would read correctly
Founder and CEO of the Central Valley Mopar Drag Pack
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Re: Thumper Carbs?
[Re: mikeysmopars]
#1771238
03/16/15 07:30 PM
03/16/15 07:30 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
MR P i'll take some pix when i get home and post them, Only reason they are on there is for the 02 sensor. I wanted to put them in the collectors but everyone said i needed the extensions so the sensor would read correctly
Without knowing your engine the proper collector length
would be in the 16"-18" to make max torque.. so your
extensions might have given you the decrease in the 60'..
just saying
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