2004 T660 Upgrades - Page 5 - ArcticChat.com - Arctic Cat Forum

4 Strokes Z1 Turbo / Z1 / T660

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Old 01-05-2017, 08:31 PM   #41
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 Quote: Originally Posted by Oshkosh1 View Post
You must be mistaken.

Apparently it's not possible...or so I hear.

Your eyes are going bad and/or your speedometer is a mid-late 90's "Dream-o-meter" and Arctic Cat still can't install a calibrated speedo. OR...your track isn't picked and you were simply spinning the track that fast.

When I finally get up north or the lake here freezes over I'll find out myself I suppose.

In just the short run I did out back I easily hit 55 or so(with a 97 ZRT secondary)...nowhere near WOT and have a hard time believing I'm only going to see another 5 mph out of it.

Like I said...the PO of my sled said he also hit 75 going across a lake and he had no reason to BS me nor do you.
Hard to believe but as kopeck said that's where they fall on their face. That 5mph is the hardest horsepower to make with all the wind resistance and drag in the sled, 600 four strokes are pretty much as I said a good 60mph sled, Even the new Skidoo 600 ACE does 65, some guys have hit 70 on a hard packed lake with no wind, but you only get so much out of 55 horsepower
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Old 01-06-2017, 01:54 PM   #42
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Many people don't think of rider position or weight either...but those definitely have an influence in eeking out those last few MPH.

On my 70mph sprints I tucked under the windscreen and I weigh in at only 175lbs. If you're still sitting upright and weigh much more I can easily see the sled not reaching more than 65 as that's where the speedo really slowed down and crept. Luckily I know that trail very well and was following the groomer by 10 min. I also knew that I'd more than likely not see another rider so could take some risks that I would normally not. I wouldn't have thought about it if it were a Thurs-Monday for sure.

Now I've done it and the thing won't probably see more than 60 under normal riding conditions...even less with the wife. If I want to go 100 I'll jump on my EXT and pin it across Lake Winnebago...
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Old 01-06-2017, 08:59 PM   #43
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What ever you say bud, if you say so. There apparently is one 660 non turbo that does 80, but as Cnote would say, let me see the radar gun. Not the Dream-O-Meter
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Old 01-06-2017, 11:41 PM   #44
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Old 01-07-2017, 04:39 AM   #45
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 Quote: Originally Posted by 1995acext580 View Post
Im watching this thread.

So far its "ok" just keep it civil.
I am, i said "if you say so" if he believes it goes that fast thats ok. Kinda like arguing how many spirits can dance on the head of a pin.
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Old 01-07-2017, 04:42 AM   #46
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Old 01-08-2017, 12:28 AM   #47
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 Quote: Originally Posted by guudasitgets View Post
What ever you say bud, if you say so. There apparently is one 660 non turbo that does 80, but as Cnote would say, let me see the radar gun. Not the Dream-O-Meter

I have no idea where the "80" number came up. I stated I saw 70....twice.

I'm not going to put a gun on it cause I don't care that you don't believe it.

Like I said. it hit 60 without too much effort. 65 was a slow climb and from there was more of a creep. IF you can't get one up there...not my problem. I have no reason to make this up...I know what I saw, have no reason to justify it, and if YOU don't choose to believe it then move along..."Bud".

I'll be in Eagle River the next two weekends with it. I suppose if you want to come down and drag race to St Germain you would be satisfied...but I won't hold my breath.
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Old 01-08-2017, 01:17 AM   #48
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I'll also add something regarding HP numbers. I rebuild old Brit sports cars as a hobby. A STOCK 73 MGB puts roughly 70 HP on the floor. I've gotten one to 108mph...without overdrive. SO...how difficult is it for me to believe a machine which weighs a quarter but retains 2/3 of the power would attain that if properly maintained and ridden? Not very.

There's a reason I use the same signature in most hobbyist forums like this...

Ride safe...
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1996 ZRT600
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Old 01-08-2017, 08:20 PM   #49
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 Quote: Originally Posted by Oshkosh1 View Post
I have no idea where the "80" number came up. I stated I saw 70....twice.

I'm not going to put a gun on it cause I don't care that you don't believe it.

Like I said. it hit 60 without too much effort. 65 was a slow climb and from there was more of a creep. IF you can't get one up there...not my problem. I have no reason to make this up...I know what I saw, have no reason to justify it, and if YOU don't choose to believe it then move along..."Bud".

I'll be in Eagle River the next two weekends with it. I suppose if you want to come down and drag race to St Germain you would be satisfied...but I won't hold my breath.
Sir, I said it's a 60mph sled. Your arguing what a 12 year old 55 horsepower sled does sir. If you say yours goes 70, 80, 90, it makes no difference to me. And I'll believe what I know as fact as well as quite a few others here with that sled, so I'm not going anywhere. You say thats what yours does, then thats fine best of luck to ya. I'm not going to St,Germain Theres a certain Ice Oval sled I'd rather tinker with if you don't mind and theres supposed to be a few other guys around too, so I'll have to pass. You started this thread asking if there were any upgrades for the T660 non turbo, answer is not much. Good luck with your purchase
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Old 01-09-2017, 01:21 AM   #50
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Because I'm a glutton for punishment...I went for another ride this morning. My previous ride was mostly along the Bearskin trail which although relatively "flat" still does have grade along it's length. SO...

I headed to Oneida Lake which is pancake flat. I brought my trusty mobile GPS which I carry in one of my small airplanes. I also followed(somewhat) the protocol used in any land speed attempt which is to run the same path each direction and take the average to mitigate wind or any other "environmental" or "geological" aid.

As well...most know the digital dash can either display speed or RPM with the other shown on the needle, so I made two runs comparing each...each way to see what discrepancy may be allowed.

Here's what I learned;

1. The digital and "needle" speeds do not correlate. The "needle" will read the same speed 3.5mph faster. In other words if the needle says "70", in reality the sled is moving only 66.5mph.
2. The digital read is only slightly better and is reading 3mph "high".
3. On the flat lake this morning I averaged only 65.4mph after four runs and timing the "gates" at speed.

SO...(again) what did I conclude? In all probability my "70" was in reality around 67/68 and that the straightaways I ran on the trail were slopped slightly (-) and that also could have skewed the speed a couple MPH or so high.

I have higher confidence that the average I saw today is the "true" top speed(65.4). 60mph was definitely passed...and 70mph although "seen" was probably not correct. I did "see" it, but indeed the 70 was not an accurate speed and may have been "aided".

All in all it was actually fun to do the "work" and satisfy my curiosity.

Now it's time to clean up the Panther for Vintage weekend up in Eagle River starting Thursday!

Ride safe!
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Sleds
2004 T660
1994 EXT580/EFI
1973 Panther

Past Sleds
1999 ZR600/EFI
1996 ZRT600
1994 Cougar
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