Re: 2009 Engine masters in street car to the track....
[Re: Ian]
#507240
10/26/09 01:29 PM
10/26/09 01:29 PM
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Joined: Jul 2006
Posts: 4,595 On the south side of Nowhere
S/ST 3040
master
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master
Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
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Brett called me from the track so, chassis and track conditions are based on recollection.
I believe the Dart has 28" tire and 4.10 gear. Converter is a 3500 stall nitrous unit built for the previous engine so, hardly optimum for a N/A all-out drag car.
Track was crap. 900 ft. of actual elevation with D.A. in the 1200-1500 ft. range most of the day.
Engine was built on a "do or die" basis. Components were selected and used, Period. One camshaft, heads and intake ported and bolted on. 18 hits on Rider's dyno before the competition. That's it.
The cam was a little too big for the competition but, big enough to pull double-duty in a bracket car. Drop-in roller lifters were supplied by Brian Hafliger @ IMM Engines and they performed flawlessly. Mid-range torque is absolutely wicked for a 10.9:1 street engine on pump swill. IIRC, it made 457 ft/lbs @ 3000 RPM. 138 MPH @ over 3000 lbs. is a testiment to it's overall potential.
Brett labored over the cylinder head and intake porting intently, while I could only supply some of the hard parts I had on hand. Billet 3.792" crank I sent to ShaftTech to cut to SBC 2.100" rods and re-heat treated. Jim Mikel @ Performance Technology did the beautiful "no-hole" balance on the crank. Callies Compstar 6.250" SBC rods, Calico coated Clevites and custom JE domed pistons round out the rotating assembly.
INDY 360-2 CNC 230cc cylinder heads were reused from last year, with some radical changes in valve job and port work. (Hi 330's) Ferrea 5/16" stem valves in 2.08" x 1.60" size.
INDY 360-3R obviously got several hours of attention, as the plenum was opened to 4500 flange while employing a semi-permanent, cut-down, tapered Wilson spacer, along with extensive porting in the runners.
A Pro Systems custom 1050 Dominator from last year was again reused. It proved to be a good match with air/fuel ratios in the mid 12s throughout the entire pull.
1 7/8" Sprint car headers with Magnaflow mufflers were used on the dyno.
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Re: 2009 Engine masters in street car to the track.....
[Re: W5DART66]
#507246
10/26/09 03:53 PM
10/26/09 03:53 PM
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Joined: Dec 2004
Posts: 1,717 Rancho Cucamonga, Calif.
PUNK
top fuel
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top fuel
Joined: Dec 2004
Posts: 1,717
Rancho Cucamonga, Calif.
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WOW! Thats some insane MPH for that combo. Very impressive. Is your cam selection top secret? Its obvious you guys did some extensive work to the ports and im sure the rest of the heads, but how is that cam profiled if you dont mind me asking?? I know alot of people claim that there is a way to make an engine win a dyno contest and then there is a way to build an engine that gets down the track fastest....well its definitely fast down the track. Im not sure how you guys did in the dyno challenge , but im sure it was good. If not; who cares that thing runs fantastic!!!!
10.53 @ 125mph. 1.37 60 foot. Caltracs and Monoleafs, AFCO shocks.
Heads by INDIO MOTOR MACHINE; IMM. CP Pistons, PC Carbs.
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