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Dart270
Board Sponsor & Moderator
Joined: 21 Oct 2002
Posts: 9606
Location: Blacksburg, VA
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Post subject:
68 Dart initiated into Boost Land
(Wed Jun 01, 2011 9:20 pm)
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Did the first real pulls with the turbo 68 Dart today at 6psi boost. Pulls pretty hard from 2600 RPM up. Should work great on the track and for putting around. Big smiles on my face for sure...
No major leaks/problems as yet. May need a bigger tire to pull it all the way through the 1/4 mile in 3rd gear. 3.55 gears and 24" tire now. 2200 stall converter should make for easy traction, kinda sucky 60 fts, but easy on all the parts. Good for a boost beginner.
Should be good for travel to Kearney. Spent 45 min in rush hr traffic after leaving Seymour's shop.
More tuning tomorrow. AFR at 10.6-11 and stable under WOT and full boost.
This thing will be really nuts at 12 psi or more.
Lou
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Return of the 64 Dart. Hang on...
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1974duster kev
Turbo Slant 6
Joined: 13 Jul 2007
Posts: 624
Location: clearwater florida
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Shaker223
Turbo EFI
Joined: 20 Sep 2006
Posts: 1135
Location: The Hand
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Post subject:
(Thu Jun 02, 2011 5:43 am)
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Cool.
60 foots won't be as bad as you think. It will make a ton of torque down low. |
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VG-265
TBI Slant 6
Joined: 29 Aug 2004
Posts: 186
Location: Old Junee, Australia
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Post subject:
(Thu Jun 02, 2011 6:10 am)
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| Years ago a friend had a turbo 202 cube Holden 6, and changed the gears from 3.23, to 3.08. It went better everywhere. Seemed to make the turbo "work"
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Richard (aka Fingers)
'72 Valiant 245 Wagon
'70 Valiant 265 Sedan
'70 Valiant 318 Hardtop
'69 Valiant 318 Hardtop
'69 Valiant 225 Sedan x 4
'69 Valiant 225 ute
'64 Falcon Sedan
'60 International AA110 pick up
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turbo66valiant
EFI Slant 6
Joined: 19 Apr 2008
Posts: 349
Location: SoDak
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Post subject:
(Thu Jun 02, 2011 11:44 am)
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Congrats...loooking forward to seeing this hot rod. Later
Ryan |
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Turbo Toad
EFI Slant 6
Joined: 07 Dec 2010
Posts: 347
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Post subject:
(Thu Jun 02, 2011 4:36 pm)
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Lou u need some pics I want to see that header u had made
Aaron |
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Dart270
Board Sponsor & Moderator
Joined: 21 Oct 2002
Posts: 9606
Location: Blacksburg, VA
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Post subject:
(Thu Jun 02, 2011 8:34 pm)
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Plenty of pics on my flickr site.
http://www.flickr.com/photos/16910097@N06/sets/72157625924551471/
No pics there from the running version, but it all looks about the same...
I read the boost on the MS-EFI MAP sensor during a hard pull and it maxed out around 150 kPa, or about 7.5 psi boost. Not the same as the 6 psi spec'ed for the wastegate, but close enough I guess. It feels like a rocket, but I am holding off guessing what it'll turn on the track.
Took my 4 yr old nephew and sister-in-law for a ride after lunch. Little Arthur's smile was bigger than mine...
Launching will be easy. Boost doesn't start coming up until about 2400-2600 RPM at WOT, then it takes off.
One issue is I now have a little miss at idle. Best guess is a wee leaking intake manifold gasket on one cylinder? Cleans up above idle, so I guess it's OK. Any input from the experts here? Will I hole a piston if I keep leaning on it?
Seymour and I worked on the car a little today at his shop - me making brake+whl brng adjustments and swapping wheels/spacers around, and he kindly fabbed a heat shield for the master cyl so I don't melt it down or boil fluid. What a guy!
Lou
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1974duster kev
Turbo Slant 6
Joined: 13 Jul 2007
Posts: 624
Location: clearwater florida
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Post subject:
(Fri Jun 03, 2011 1:00 pm)
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No intercooler eh no meth kit right? Eh 7.5psi i wouldn't think you could hurt it since you got the afr in a good range under wot.
Kev_________________  |
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Mister Twister
EFI Slant 6
Joined: 05 Jan 2007
Posts: 391
Location: Florida
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Post subject:
(Sun Jun 05, 2011 5:04 am)
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 Very nice set up Lou, minimal plumbing. Looks like the Nitrous racers will be feeling a little more pressure from you now  Keep us posted Don._________________ '72  Duster /6 with turbo build up
'03 Ram 2500 4x4 w/HEMI 5sp 4:10 posi
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Greg Ondayko
Supercharged
Joined: 27 Nov 2004
Posts: 2763
Location: IRWIN PA
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Post subject:
(Sun Jun 05, 2011 3:12 pm)
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Spool up that turbo for Good 60's !!!
Cool!
Greg |
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1974duster kev
Turbo Slant 6
Joined: 13 Jul 2007
Posts: 624
Location: clearwater florida
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Dart270
Board Sponsor & Moderator
Joined: 21 Oct 2002
Posts: 9606
Location: Blacksburg, VA
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Post subject:
(Mon Jun 06, 2011 12:15 pm)
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Thanks, guys. Kev, thanks for the heatshield link. I may get one a dem!
14.98 @ 95.3 MPH was fastest time with non-optimal mixture and retarded timing. Methinks we can get to the 13s with minimal tweaks and good air. Still gets decent mileage 21-22 MPG for the 1000 mi roundtrip. Better tires and a new limited slip will really help build boost and 60 ft, and 3.23 gears will let us air it out at the top end. With the 3.55s and 24.8" tires, 96-100 MPH is about the max.
Lou
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1974duster kev
Turbo Slant 6
Joined: 13 Jul 2007
Posts: 624
Location: clearwater florida
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Post subject:
(Mon Jun 06, 2011 5:57 pm)
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Badass Lou thats an awesome out of the box time great gas mileage lol i wish i could get that outa my motor with that giant bg demon i gotta figure some trick to pull out of my sleeve for some better mpg.
Just waiting on my header from ceramic coat then i'll be back on the road and to the track pretty soon hopefully.
Kev_________________ |
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Dart270
Board Sponsor & Moderator
Joined: 21 Oct 2002
Posts: 9606
Location: Blacksburg, VA
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Post subject:
(Mon Jun 06, 2011 7:30 pm)
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Sounds great, Kevin. I look forward to hearing about your runs too!
My long-term plan of going to tunable port EFI before turboing seems to have worked perfectly. It was astonishingly easy to get the mixture tuned for 11.5:1 WOT pulls, and mileage. Hard to imagine doing that with a carb - once EFI'ed, can't go back...
I was pretty happy with hitting the 14s with 4400 ft density altitude and conservative tuneup.
Cheers,
Lou
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1974duster kev
Turbo Slant 6
Joined: 13 Jul 2007
Posts: 624
Location: clearwater florida
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Post subject:
(Tue Jun 07, 2011 11:42 am)
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What work is done to the engine lou? cam and what not? What rpm are you getting out of the motor?
Kev_________________ |
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