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Old 12-08-2012, 04:02 PM   #1
Tassie Phantom
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destroyer rebuild intervals

how often are people freshening up destroyer motors, rings bottom end brgs etc?
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Best 60 ft = 1.358
Best 330 = 3.813
Best 1/8th = 5.911
Best ET = 9.461
Best MPH = 141.77
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Old 12-08-2012, 10:28 PM   #2
TaxmanHog
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I'm no expert, but will relate what I experienced & plan to do, YMMV.......

2011 Season I made 176 passes, the rings were OK but I replaced them anyway, the heads got a clean up & light porting, I installed new MAP Sensor & Injectors, and finished the must do mechanical fixes to the tranny (V&H 2nd gear), had already done the clutch basket. Also changed the Secondary cam chains for good measure. Bearings are a must do once the case is split.

2012 Season I made 76 passes, I do not plan to pull the engine at all, I will be changing the Throttle Body, as I am concerned about the cross shafts breaking, the unit I have has been erratic with idle stability.

2013 Season I anticipate making at least 45 passes in a New England only race season, I'm not sure how many AHDRA races I'll make, but each event I make as many as 20 passes in a Friday to Sunday time frame. By the end of 2013 I will probably be at the point where I will pull it, might change the rods, rings and freshen the heads including valve guides. Inspect the tranny, might do an under cut
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2006 VRXSE Destroyer:TB-941 (2013)

NED POINTS 2013

(2012) ET-943, SG-941 & VRD-941
Best ET: 9.661
Best Mph: 139.34 mph
Best 60': 1.393


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http://www.newenglanddragway.com

AHDRA 2012 Season
Destroyer Points
Super Gas Points
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Old 12-09-2012, 04:56 AM   #3
Tassie Phantom
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thanx taxman glad to see you got your times down.
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Phantom


Best 60 ft = 1.358
Best 330 = 3.813
Best 1/8th = 5.911
Best ET = 9.461
Best MPH = 141.77
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Old 12-09-2012, 03:00 PM   #4
dmfcavu
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2012 was my first year, bought the Destroyer in November, 2011. Prior owner said they had 34 passes on it since new. I had about 180 Racepak files downloaded, and I know I missed several. I would estimate I had at least 200 passes since buying it. That means at least 230, maybe as many as 250.

Interestingly, my quickest time was the last event of the year and I thought it might have been getting tired - an assumption based only on the number of passes on the engine.

Upon tear-down, Lou remarked the engine really looked good, the only problem being worn valve guides. In prior conversations with Lou, he mentioned having seen Destroyers with as many as 250 passes. That's probably the outer limit, or at least getting close.

What has your experience been?
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ManCup SC Plate No. 1
ManCup Pro Fuel Plate No. 10


VMOD National Record Holder 1/8 & 1/4 Mile ET
5.417 & 8.631


2013 Manufacturers Cup Super Comp (8.90 Index) Champion

2013 Manufacturers Cup Pro Fuel Top 10 In Points

Destroyer
Best ET - 8.87/150
Best 60' - 1.325

Pro Fuel Nitro Harley
Best ET - 7.42/167 MPH
Best 60' - 1.21
Best Adrenaline Rush Ever!

ZX-14R
Best ET - 9.80/153

AMRA Pro 6.90 Fuel Pilot

NHRA License ET Bracket MC 3025
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Old 12-10-2012, 02:58 AM   #5
Tassie Phantom
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thanx guys have about 140 passes on it not looking at pulling it down until june prob another 50 passes.
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Phantom


Best 60 ft = 1.358
Best 330 = 3.813
Best 1/8th = 5.911
Best ET = 9.461
Best MPH = 141.77
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Old 04-13-2013, 06:58 AM   #6
Tassie Phantom
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pulled the motor down to freshen up with 140 odd passes, valve springs were well shot and an inlet cam was picking up a bucket, pistons ok, replaced rings and gave light hone, replaced shift forks and shafts as preventative measure, and installed v&h second gear, replaced big end and main brgs and rod bolts. picked up 7hp form before and after.
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Phantom


Best 60 ft = 1.358
Best 330 = 3.813
Best 1/8th = 5.911
Best ET = 9.461
Best MPH = 141.77
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Old 04-13-2013, 07:37 AM   #7
dmfcavu
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Great update Tassie, thanks.
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DMFCAVU
ManCup SC Plate No. 1
ManCup Pro Fuel Plate No. 10


VMOD National Record Holder 1/8 & 1/4 Mile ET
5.417 & 8.631


2013 Manufacturers Cup Super Comp (8.90 Index) Champion

2013 Manufacturers Cup Pro Fuel Top 10 In Points

Destroyer
Best ET - 8.87/150
Best 60' - 1.325

Pro Fuel Nitro Harley
Best ET - 7.42/167 MPH
Best 60' - 1.21
Best Adrenaline Rush Ever!

ZX-14R
Best ET - 9.80/153

AMRA Pro 6.90 Fuel Pilot

NHRA License ET Bracket MC 3025
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Old 04-13-2013, 09:25 AM   #8
TaxmanHog
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Good news, now you can be rest assured during ~your~ off season that she is ready to go when it's time to resume racing!!
__________________
2006 VRXSE Destroyer:TB-941 (2013)

NED POINTS 2013

(2012) ET-943, SG-941 & VRD-941
Best ET: 9.661
Best Mph: 139.34 mph
Best 60': 1.393


----
http://www.newenglanddragway.com

AHDRA 2012 Season
Destroyer Points
Super Gas Points
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Old 04-14-2013, 06:02 AM   #9
Tassie Phantom
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no off season noel, tested today and killed a clutch race in sydney in 3 weeks, Brisbane in another 6 weeks and then I miss a couple of rounds before the sept and november rounds.
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Phantom


Best 60 ft = 1.358
Best 330 = 3.813
Best 1/8th = 5.911
Best ET = 9.461
Best MPH = 141.77
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