More Bonneville 2012 270mph+ Mopar
#1297897
09/05/12 12:20 PM
09/05/12 12:20 PM
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Joined: Jan 2003
Posts: 2,129
Vermont
TrWaters
OP
top fuel
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OP
top fuel
Joined: Jan 2003
Posts: 2,129
Vermont
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Re: More Bonneville 2012 270mph+ Mopar
[Re: Sledge_57]
#1297905
09/05/12 10:45 PM
09/05/12 10:45 PM
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Joined: Jan 2003
Posts: 8,166
Plymouth, MI
Blusmbl
master
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master
Joined: Jan 2003
Posts: 8,166
Plymouth, MI
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62% throttle position and 132 lb boost  I wonder how fast it would have gone at WOT 
132kpa is about 4psi boost. Must be some wicked motor!
How does that work? 132 kilopascals = 19.14498 PSI according to every calculator I can find....
When you see manifold pressure read in kPa, it's usually absolute pressure, not gauge pressure.
Bonneville is at about 4200 feet above sea level, which is approximately 86 kPa of barometric pressure. 132-86 = 46 kPa of boost, or a little less than 7 psi. Trendz assumed a standard sea level barometric pressure.
Edit: if you watch the start of the video it's reading a manifold pressure of 60 kpa or so. That's in a vacuum condition, only diesels sometimes run above atmospheric at idle. I think I also saw a peak of 150 kPa on the gauge during the run, which is closer to 9.3 psi of boost.
Last edited by Blusmbl; 09/05/12 10:48 PM.
'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118
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Re: More Bonneville 2012 270mph+ Mopar
[Re: David Barton]
#1297906
09/05/12 10:49 PM
09/05/12 10:49 PM
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Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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Nice job David.... 
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: More Bonneville 2012 270mph+ Mopar
[Re: tubtar]
#1297910
09/07/12 04:41 PM
09/07/12 04:41 PM
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Joined: Mar 2011
Posts: 3
Omaha, NE
dieselgeek
member
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member
Joined: Mar 2011
Posts: 3
Omaha, NE
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Hi Guys,
Been following some of the stats on my Youtube video above and was glad to see 370+ hits from the Moparts forum...!
I posted the video, I'm also the EFI tuner / electronics geek on Lee's car.
The first thing I wanted to say was how happy we are with David, Ray, and everyone else at Barton Racing. They built us an engine that had ZERO mechanical issues and that's saying a lot for an engine that has to live at these power levels for 7 miles at a time... which equals a LOT of passes at the drag strip. Although he seriously considered other builders with "more turbo experience," Lee's long standing relationship with the Barton family convinced him to trust them with a Turbo engine build which they executed perfectly. The engine didn't even break a sweat. These guys know their stuff when it comes to Hemi Chryslers, period.
(I should add that David and Ray also supplied us with the engine that holds the current A/PRO record at Bonneville, one of the more prestigious classes (fastest naturally aspirated Production body car in the world) in the #1001 car. We've taken that engine to the salt 5 years in a row without so much as a refresh - it just refuses to break and the Chevy/NASCAR boys have been chasing us the entire time (they qualified on our record once but weren't allowed to return due to rules violations, heh).)
We ended up taking the A/BGALT record this year on our first try - the 300+mph goal is next after Ryan Fain performs some suspension and aero tweaks. I'm so fortunate to be able to work with all these guys!
In case anyone is interested, another unique feature on Lee's car is that all of the engine management and data gathering are 100% Open Source. We use a Megasquirt 3x system for fuel, ignition, boost control, fault management (caution/shutdown lights), etc. We use a JBPerf.com "IO Extender" to gather data from EGTs, AFRs, 4 suspension travel sensors, front and rear wheel speed sensors, turbine speed sensors, GPS data, coolant pressure&temp, oil pressure&temp, intercooler fluid temp, pre and post intercooler intake air temps, and a few other misc inputs. We're using Spaghetti Menders for the primary power controls in the car which made the wiring task a lot easier.
Add to that, I assembled an "in-car PC" which gathered the data from the Megasquirt and IOX systems in realtime, just like a laptop but bolted to the chassis. I then used a wi-fi card in that PC (which runs Linux instead of Windows), configured as a WiFi Hotspot. I connected to it with my laptop from inside the Chase Vehicle, and was able to monitor and tune real time via wireless while the car was on-course. All of this was done at extremely low cost compared to using commercially available systems, although it was a bit DIY-intensive.
The most helpful data by far are the suspension travel sensors. They tell us we have 1000+ lbs of downforce from Aero on the nose of the car, enough to push us past the weight ratings of the front tires. Ryan and Neil have a plan to fix that for next year.
Someone asked about EGTs. Realize we are sampling at the exhaust port in the center of the stream, not where most people take their samples. On a turbo+gasoline engine you'll get these kinds of EGTs. Confirming that the tune is OK is the fact that the spark plugs coming out of the engine looked just like we wanted, a little fuzzy from being safely rich, but still sharp edges on the ground strap and electrode - we're not burning them at all, which is good because we plan on feeding more boost into the engine on the next trip.
Sorry if my post is long-winded, I figured some of you guys on Moparts would appreciate hearing the details. If you have questions, feel free to ask.
-Scott Clark
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Re: More Bonneville 2012 270mph+ Mopar
[Re: dieselgeek]
#1297911
09/07/12 05:01 PM
09/07/12 05:01 PM
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Joined: Feb 2003
Posts: 3,456
Out West
408strokerdart
master
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master
Joined: Feb 2003
Posts: 3,456
Out West
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Quote:
Hi Guys,
Been following some of the stats on my Youtube video above and was glad to see 370+ hits from the Moparts forum...!
I posted the video, I'm also the EFI tuner / electronics geek on Lee's car.
The first thing I wanted to say was how happy we are with David, Ray, and everyone else at Barton Racing. They built us an engine that had ZERO mechanical issues and that's saying a lot for an engine that has to live at these power levels for 7 miles at a time... which equals a LOT of passes at the drag strip. Although he seriously considered other builders with "more turbo experience," Lee's long standing relationship with the Barton family convinced him to trust them with a Turbo engine build which they executed perfectly. The engine didn't even break a sweat. These guys know their stuff when it comes to Hemi Chryslers, period.
(I should add that David and Ray also supplied us with the engine that holds the current A/PRO record at Bonneville, one of the more prestigious classes (fastest naturally aspirated Production body car in the world) in the #1001 car. We've taken that engine to the salt 5 years in a row without so much as a refresh - it just refuses to break and the Chevy/NASCAR boys have been chasing us the entire time (they qualified on our record once but weren't allowed to return due to rules violations, heh).)
We ended up taking the A/BGALT record this year on our first try - the 300+mph goal is next after Ryan Fain performs some suspension and aero tweaks. I'm so fortunate to be able to work with all these guys!
In case anyone is interested, another unique feature on Lee's car is that all of the engine management and data gathering are 100% Open Source. We use a Megasquirt 3x system for fuel, ignition, boost control, fault management (caution/shutdown lights), etc. We use a JBPerf.com "IO Extender" to gather data from EGTs, AFRs, 4 suspension travel sensors, front and rear wheel speed sensors, turbine speed sensors, GPS data, coolant pressure&temp, oil pressure&temp, intercooler fluid temp, pre and post intercooler intake air temps, and a few other misc inputs. We're using Spaghetti Menders for the primary power controls in the car which made the wiring task a lot easier.
Add to that, I assembled an "in-car PC" which gathered the data from the Megasquirt and IOX systems in realtime, just like a laptop but bolted to the chassis. I then used a wi-fi card in that PC (which runs Linux instead of Windows), configured as a WiFi Hotspot. I connected to it with my laptop from inside the Chase Vehicle, and was able to monitor and tune real time via wireless while the car was on-course. All of this was done at extremely low cost compared to using commercially available systems, although it was a bit DIY-intensive.
The most helpful data by far are the suspension travel sensors. They tell us we have 1000+ lbs of downforce from Aero on the nose of the car, enough to push us past the weight ratings of the front tires. Ryan and Neil have a plan to fix that for next year.
Someone asked about EGTs. Realize we are sampling at the exhaust port in the center of the stream, not where most people take their samples. On a turbo+gasoline engine you'll get these kinds of EGTs. Confirming that the tune is OK is the fact that the spark plugs coming out of the engine looked just like we wanted, a little fuzzy from being safely rich, but still sharp edges on the ground strap and electrode - we're not burning them at all, which is good because we plan on feeding more boost into the engine on the next trip.
Sorry if my post is long-winded, I figured some of you guys on Moparts would appreciate hearing the details. If you have questions, feel free to ask.
-Scott Clark
Thanks for that Scott. Very informative.
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Re: More Bonneville 2012 270mph+ Mopar
[Re: rickraw]
#1297914
09/07/12 10:37 PM
09/07/12 10:37 PM
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Joined: May 2011
Posts: 4,489
northern,Ohio,USA
Clanton
master
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master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
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awesome ride, felt like i was next to the driver. why was the throttle only at 62%?
keeping the car as hooked as you can i would think.
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