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Arctic Cat Snowmobile Dyno results.   Discuss this article on the forums. (0 posts)
The following has been recreated verbatim from the original scanned documents.
sent to us by:
Ken Podgurney
Whitecourt, Alberta
Canada Graph1 Comparison of heads with 5 grooves per cylinder
Graph2 Comparison of heads with 0 - 1 - 3 and 5 grooves per cylinder +++++++++++++++++++++++++++++++++++++++ PRINT# 11 C24 EXAMPLE.CFG No Fric. Fact Mar 17 '06 8:43pm Pg1 C24 Fri Mar 17 '06 8:42pm 7000 to 7700 RPM AVG of: A4523 A4524
BARO:27.423 Disp:700 ATemp:73 Bore:79.7 Strok:70 NPP handcrafted custom pipes
Edmonton, Alberta
780.718.5421 Model : Arctic Cat 2005 M7
Customer: Echo Cycle
Notes : single pipe development
| EXHAUST :stock | FUEL : shell vpower 91oct. | | STINGER :stock | OIL : stock inj. | | SILENCER :stock | CARBS : f/i | | NOTES : | MAIN JET : n/a |
( In the Graph below, this table is called 0 groove)
RPM
BAND
| C PWR
CHP
| C TORQ
Ft-Lbs
| BSFC
#/HrHP
| WAT T
Deg F
| EGT 1
Deg F
| EGT 2
Deg F
| EGT 3
Deg F
| C.F.
| Time
Sec
| | 7020 | 111.8 | 83.6 | | 84.0 | 547 | 457 | | 1.147 | 0.1 | | 7100 | 114.3 | 84.6 | | 84.5 | 557 | 461 | | 1.147 | 0.3 | | 7201 | 119.0 | 86.8 | | 84.5 | 569 | 470 | | 1.147 | 0.3 | | 7300 | | | | | | | | | | | 7404 | 127.9 | 90.7 | | 91.5 | 690 | 581 | | 1.149 | 0.5 | | 7500 | 128.6 | 90.1 | | 89.5 | 656 | 550 | | 1.148 | 0.7 | | 7600 | 114.2 | 79.0 | | 94.5 | 635 | 539 | | 1.151 | 3.9 | | 7665 | 106.4 | 72.9 | | 98.5 | 599 | 522 | | 1.152 | 0.8 | AVERAGE MARKERS NOT SET DEPAC # 219
+++++++++++++++++++++++++++++++++++++++ PRINT# 4 C19 EXAMPLE.CFG No Fric. Fact Mar 17 '06 8:24pm Pg1 C19 Fri Mar 17 '06 8:19pm 7500 to 8200 RPM AVG of: A5205 A5206
BARO:27.323 Disp:700 ATemp:71 Bore:0 Strok:0 NPP handcrafted custom pipes
Edmonton, Alberta
780.718.5421 Model : Arctic Cat M7
Customer: Ken
Notes : POWER AND RPM TESTING HEAD = 1 GROOVE
| EXHAUST :SLP TWINS | FUEL : 91oct. | | STINGER : SLP | OIL : AC | | SILENCER : SLP | CARBS : F/I | | NOTES : BOONDOCKER AND FUEL RESTRICTOR | MAIN JET : N/A |
( In the Graph below,this table is called 1 groove)
RPM
BAND
| C PWR
CHP
| C TORQ
Ft-Lbs
| BSFC
#/HrHP
| WAT T
Deg F
| EGT 1
Deg F
| EGT 2
Deg F
| EGT 3
Deg F
| C.F.
| Time
Sec
| | 7546 | 137.5 | 95.7 | | 88.0 | 986 | 880 | | 1.140 | 0.1 | | 7600 | 136.4 | 94.2 | | 88.0 | 984 | 875 | | 1.140 | 0.1 | | 7700 | 141.2 | 96.3 | | 87.5 | 977 | 860 | | 1.139 | 0.3 | | 7800 | 140.8 | 94.8 | | 87.0 | 973 | 851 | | 1.139 | 0.5 | | 7900 | 141.7 | 94.2 | | 86.5 | 967 | 839 | | 1.139 | 0.6 | | | | | | | | | | | | | 8000 | 138.2 | 90.7 | | 86.5 | 960 | 832 | | 1.139 | 1.0 | | 8100 | 123.2 | 79.9 | | 85.0 | 942 | 797 | | 1.140 | 1.1 | | 8196 | 117.4 | 75.2 | | 85.5 | 934 | 794 | | 1.139 | 1.2 | AVERAGE MARKERS NOT SET DEPAC # 219 +++++++++++++++++++++++++++++++++++++++ PRINT# 5 C20 EXAMPLE.CFG No Fric. Fact Mar 17 '06 8:24pm Pg1 C20 Fri Mar 17 '06 8:20pm 7300 to 8000 RPM AVG of: A5199 A5200
BARO:27.323 Disp:700 ATemp:71 Bore:0 Strok:0 NPP handcrafted custom pipes
Edmonton, Alberta
780.718.5421 Model : Arctic Cat M7
Customer: Ken
Notes : POWER AND RPM TESTING HEAD = 3 GROOVE
| EXHAUST : SLP TWINS | FUEL : 91oct. | | STINGER : SLP | OIL : AC | | SILENCER : SLP | CARBS : F/I | | NOTES : BOONDOCKER AND FUEL RESTRICTOR | MAIN JET : N/A |
( In the Graph below, this table is called 3 groove)
RPM
BAND
| C PWR
CHP
| C TORQ
Ft-Lbs
| BSFC
#/HrHP
| WAT T
Deg F
| EGT 1
Deg F
| EGT 2
Deg F
| EGT 3
Deg F
| C.F.
| Time
Sec
| | 7321 | 134.5 | 96.5 | | 80.5 | 798 | 708 | | 1.144 | 0.1 | | 7400 | | | | | | | | | | | 7509 | 140.4 | 98.2 | | 80.5 | 789 | 704 | | 1.144 | 0.2 | | 7600 | 142.7 | 98.6 | | 84.5 | 837 | 730 | | 1.144 | 0.1 | | 7700 | 142.3 | 97.1 | | 82.5 | 803 | 712 | | 1.144 | 0.4 | | 7800 | 142.1 | 95.7 | | 81.5 | 788 | 702 | | 1.144 | 0.3 | | 7900 | 137.9 | 91.7 | | 82.0 | 785 | 699 | | 1.144 | 0.5 | | | | | | | | | | | | | 7995 | 105.3 | 69.2 | | 81.5 | 746 | 673 | | 1.145 | 4.6 | AVERAGE MARKERS NOT SET DEPAC # 219 +++++++++++++++++++++++++++++++++++++++ PRINT# 12 C23 EXAMPLE.CFG No Fric. Fact Mar 17 '06 8:44pm Pg1 C23 Fri Mar 17 '06 8:36pm 7400 to 8100 RPM AVG of: A5058 A5059
BARO:27.8 Disp:800 ATemp:76.9 Bore:4.03 Strok:3.48 NPP handcrafted custom pipes
Edmonton, Alberta
780.718.5421 Model : Arctic Cat M7
Customer: Ken
Notes : DYNO TEST (HEAD = 5 GROOVE)
| EXHAUST :SLP | FUEL : 91oct. | | STINGER : SLP | OIL : DOMINATOR 35-1 | | SILENCER : SLP | CARBS : F/I | | NOTES : BOONDOCKER ZERO W/ REST | MAIN JET : N/A |
( In both Graphs below,this table is called 5 groove)
RPM
BAND
| C PWR
CHP
| C TORQ
Ft-Lbs
| BSFC
#/HrHP
| WAT T
Deg F
| EGT 1
Deg F
| EGT 2
Deg F
| EGT 3
Deg F
| C.F.
| Time
Sec
| | 7417 | 133.1 | 94.2 | | 82.5 | 786 | 746 | | 1.103 | 0.2 | | 7500 | 135.9 | 95.1 | | 84.0 | 802 | 745 | | 1.104 | 0.2 | | 7600 | 140.1 | 96.8 | | 82.5 | 773 | 734 | | 1.103 | 0.4 | | 7700 | 140.7 | 95.9 | | 82.0 | 763 | 724 | | 1.103 | 0.2 | | 7800 | 143.5 | 96.6 | | 83.0 | 760 | 709 | | 1.104 | 0.6 | | 7900 | 127.9 | 85.0 | | 80.5 | 658 | 636 | | 1.103 | 1.3 | | | | | | | | | | | | | 8000 | 116.7 | 80.0 | | 80.0 | 633 | 606 | | 1.103 | 3.4 | | 8082 | 112.8 | 81.5 | | 81.5 | 650 | 596 | | 1.104 | 1.7 | AVERAGE MARKERS NOT SET DEPAC # 219 +++++++++++++++++++++++++++++++++++++++ PRINT# 8 C22 EXAMPLE.CFG No Fric. Fact Mar 17 '06 8:35pm Pg1 C22 Fri Mar 17 '06 8:34pm 7100 to 7900 RPM AVG of: A5067 A5068
BARO:27.8 Disp:800 ATemp:76.9 Bore:4.03 Strok:3.48 NPP handcrafted custom pipes
Edmonton, Alberta
780.718.5421 Model : Arctic Cat M7
Customer: Ken
Notes : DYNO TEST HEAD = 5 GROOVE
| EXHAUST :stock | FUEL : 91oct. | | STINGER : npp flyte prototype | OIL : DOMINATOR 35-1 | | SILENCER : stock | CARBS : F/I | | NOTES : BOONDOCKER ZERO & NO REST | MAIN JET : N/A |
( In the Graph below, this table is called 5G npp N)
RPM
BAND
| C PWR
CHP
| C TORQ
Ft-Lbs
| BSFC
#/HrHP
| WAT T
Deg F
| EGT 1
Deg F
| EGT 2
Deg F
| EGT 3
Deg F
| C.F.
| Time
Sec
| | 7141 | 119.0 | 87.5 | 0.02 | 84.5 | 684 | 648 | | 1.114 | 0.1 | | 7200 | | | | | | | | | | | 7319 | 125.7 | 90.2 | 0.01 | 84.0 | 672 | 646 | | 1.113 | 0.3 | | 7400 | 128.6 | 91.2 | 0.01 | 84.0 | 665 | 637 | | 1.113 | 0.3 | | 7500 | 129.9 | 91.0 | 0.005 | 84.0 | 655 | 628 | | 1.113 | 0.6 | | 7600 | 128.9 | 89.1 | 0.004 | 84.0 | 646 | 616 | | 1.113 | 0.6 | | 7700 | 127.7 | 87.1 | 0.00 | 84.0 | 639 | 606 | | 1.113 | 0.3 | | 7800 | 119.8 | 80.7 | 0.000 | 83.0 | 623 | 593 | | 1.112 | 0.9 | | 7856 | 119.6 | 80.0 | | 83.0 | 619 | 586 | | 1.112 | 0.5 | AVERAGE MARKERS NOT SET DEPAC # 219 +++++++++++++++++++++++++++++++++++++++ PRINT# 6 A5066 EXAMPLE.CFG No Fric. Fact Mar 17 '06 8:33pm Pg1 DEPAC# 219 Fri Feb 17 '06 3:16am F100 Flow Tst# 5066 7400 to 8000 RPM
BARO:27.8 Disp:800 ATemp:76.9 Bore:4.03 Strok:3.48 NPP handcrafted custom pipes
Edmonton, Alberta
780.718.5421 Model : Arctic Cat M7
Customer: Ken
Notes : DYNO TEST HEAD = 5 GROOVE
| EXHAUST : stock | FUEL : 91oct. | | STINGER : npp flyte prototype | OIL : DOMINATOR 35-1 | | SILENCER : stock | CARBS : F/I | | NOTES : BOONDOCKER ZERO W/ FUEL REST | MAIN JET : N/A |
( In the Graph below, this table is called 5G npp R)
RPM
BAND
| C PWR
CHP
| C TORQ
Ft-Lbs
| BSFC
#/HrHP
| WAT T
Deg F
| EGT 1
Deg F
| EGT 2
Deg F
| EGT 3
Deg F
| C.F.
| Time
Sec
| | 7445 | 130.4 | 92.0 | | 80.5 | 702 | 673 | | 1.114 | 0.1 | | 7500 | 134.1 | 93.9 | | 80.5 | 699 | 668 | | 1.114 | 0.1 | | 7600 | 134.5 | 92.9 | | 80.5 | 692 | 661 | | 1.114 | 0.1 | | 7700 | 132.6 | 90.5 | | 80.5 | 686 | 654 | | 1.114 | 0.2 | | 7800 | 130.1 | 87.6 | | 80.5 | 678 | 647 | | 1.114 | 0.2 | | 7900 | 126.6 | 84.2 | | 80.5 | 669 | 637 | | 1.114 | 0.3 | | | | | | | | | | | | | 7962 | 124.6 | 80.0 | | 80.0 | 659 | 623 | | 1.114 | 0.3 | AVERAGE MARKERS NOT SET DEPAC # 219 +++++++++++++++++++++++++++++++++++++++
Links to Tables: 5 groove 5g npp N 5g npp R
Links to Tables: 0 groove 1 groove 3 groove 5 groove
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Written by Guest on 2007-01-29 20:44:05
This is a very interesting test, especially that the 3 groove setup appears superior to the 5 groove setup, indicateing there can be too much of a good thing. Pictures of the modified heads indicating where the grooves were placed in each case would be very helpful. |
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