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 Post subject: Guzzi car dyno results
PostPosted: Mon Mar 02, 2009 7:28 pm 
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Turbo EFI

Joined: Tue Jan 06, 2004 11:21 pm
Posts: 1391
Location: long beach ca
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After doing my best to get the car right,I took it to the dyno today,first pull was 186.5 at 5450 rpm max torque 195.1 at 4850.
11 pulls later,,, changes inbetween,dyno guy and me got it to 189.0 @5450 max torque 200.8 @4850. He was very surprised and a little pissed off that he only got 2.5 more hp out of my seat of the pants tune,AND alot of help from this list,THANKS ALL,moto guzzi mark


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 Post subject:
PostPosted: Mon Mar 02, 2009 8:23 pm 
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Supercharged
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Joined: Thu Jan 27, 2005 8:32 pm
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Location: Portland-ish
Car Model: Fiat 500e
Cool! Next up, time slips!

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 Post subject:
PostPosted: Mon Mar 02, 2009 9:29 pm 
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EFI Slant 6

Joined: Wed Dec 06, 2006 10:30 pm
Posts: 496
Location: Reno, Nevada
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:lol: Better bring your own helmet this time!

TF

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 Post subject:
PostPosted: Mon Mar 02, 2009 9:57 pm 
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Turbo EFI

Joined: Tue Jan 06, 2004 11:21 pm
Posts: 1391
Location: long beach ca
Car Model:
Kinda scared,what is a 189 rwhp,2675lbs car,wih driver capeable of doing in the 1/4?,,,I wanted 200 hp and a car weighing in at 2600,missed both,Next motor will be over 200,I think Mike Jefferys is the key on next build,mark


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 Post subject:
PostPosted: Tue Mar 03, 2009 1:12 am 
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EFI Slant 6
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Joined: Wed May 17, 2006 9:31 pm
Posts: 251
Location: Western Australia
Car Model:
Quote:
what is a 189 rwhp,2675lbs car,wih driver capeable of doing in the 1/4?
From this site http://www.wallaceracing.com/Calculators.htm

14.09 @ 95.09mph :D

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 Post subject:
PostPosted: Tue Mar 03, 2009 5:32 am 
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Board Sponsor & SL6 Racer
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Joined: Sun Jul 30, 2006 8:36 pm
Posts: 2432
Location: East Arkansas
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I dont believe those calculators...there a good place to start but Ive seen dynoed cars against the calculator and they have been of by 40%
Just my 02.
Frank

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 Post subject:
PostPosted: Tue Mar 03, 2009 6:27 am 
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Board Sponsor & Moderator
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Joined: Mon Oct 21, 2002 11:08 am
Posts: 16766
Location: Blacksburg, VA
Car Model:
You should be right on the 14.00 boundary. Slant will have a broader HP peak than most, so you should pull into the 13s. Heck, if you ran high 13s before, this motor should have a little more stank, right?

Lou

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 Post subject:
PostPosted: Tue Mar 03, 2009 6:53 am 
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Turbo Slant 6

Joined: Sun Jul 20, 2008 10:20 am
Posts: 758
Location: St. Louis Park, MN
Car Model:
I think you will be pleasantly surprised with your new set up. My car dynoed at 186HP with the a 236 degree at .050 cam and 500 Holley 2BBL.
With that set up it went 13.96 at 97MPH. Your car is 100# lighter and more importantly you have the auto trans that soaks up a lot of power on the dyno but will get you down the track much better than my wide ratio OD trans and granny shifts. You shold be good for middle 13s in good conditions but it won't go that fast at Las Vegas. Have fun.

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 Post subject:
PostPosted: Tue Mar 03, 2009 7:17 am 
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Supercharged
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Joined: Mon Jan 15, 2007 5:05 pm
Posts: 3767
Location: Black Diamond, WA
Car Model:
Max,

What carb are you running? and what is the jetting?

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74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG


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 Post subject:
PostPosted: Tue Mar 03, 2009 7:30 am 
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Poser
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Joined: Thu Nov 29, 2007 3:18 pm
Posts: 3128
Location: Indy
Car Model:
Max, if you have 189 at the rear wheels, your engine should be 200 hp or more right now. Not an expert but I thought the rule of thumb was about 15% loss from engine to pavement.

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 Post subject:
PostPosted: Tue Mar 03, 2009 8:28 am 
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Turbo EFI

Joined: Tue Jan 06, 2004 11:21 pm
Posts: 1391
Location: long beach ca
Car Model:
600 Holley,64 primarys 68 secondaries,8.5 power valve,lighter yellow spring,mark


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