Impromptu nostalgia race

General topics related to John Deere Snowmobiles
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Popcorn popper
Posts: 220
Joined: Tue Dec 29, 2020 6:21 pm
Real Name: Steve

Impromptu nostalgia race

Post by Popcorn popper »

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Guys went to nostalgia race with 76 liquifire. Racing approximately 1/8 mile. The jd came in 3rd basically. The yellow 5500 blizzard took first and kawi intruder 2nd. I could get the kawi with the husband on as a little heavier but his wife drove mostly and she clip me at 3/4 track. The 5500 was strong he start leaving me at mid track. Hitting about 70 at stripe. The jdx8 was right there in 4th. The jdx8 surprised a lot of them. Including me.
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400brian
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Real Name: James T. Kirk
Location: South Central Wisconsin

Re: Impromptu nostalgia race

Post by 400brian »

Good times!

'09 Vintage Challenge Survivor, and I wasn't late for supper!
'10, '11, '12, '13,'14,'15,'16,'17, '18, 19, 20, 21, 22 Vintage Challenge Survivor !
72 400 restored, Father bought new in '71
73 X8 restored
'74 340 green machine
'74 X8 9 time VC finisher
'78 Spitfire in progress
2 '75 340S 1 running, one on deck
'78 LF 440 future CC clone
'73 Skiroule RTX 440, 500 mi.
BU1
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Joined: Fri Jun 19, 2009 7:54 pm
Location: MN

Re: Impromptu nostalgia race

Post by BU1 »

Location??
730 Diesel
4020 Diesel
6500 Blizzard
6x Vintage Challenge Survivor 1x DNF
Popcorn popper
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Re: Impromptu nostalgia race

Post by Popcorn popper »

Yes lots of fun central Alberta. :sled:
Popcorn popper
Posts: 220
Joined: Tue Dec 29, 2020 6:21 pm
Real Name: Steve

Re: Impromptu nostalgia race

Post by Popcorn popper »

I need to step it up. Can a 81 liquifire be modded enough to kick a 9500?
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ihengineer76
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Real Name: Tom Rehberg
Location: SC Wisconsin

Re: Impromptu nostalgia race

Post by ihengineer76 »

That all depends on how deep your pockets are. Can it? Yes. Affordably? No.
1976 Liquidator - 970 mile raced sled
1975 340/S - I-500 raced sled
1978 440 Liquifire
Popcorn popper
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Re: Impromptu nostalgia race

Post by Popcorn popper »

Not to worried about affordable. Just wanna surprise a few. I’ve ran skidoo’s my whole life. Hopped up 521(537 type) and triples,700,800 rotax. Never new anything about jd till I bought the 75 jdx8. The power of that sled is impressive. I beat a 6500 blizzard two outta three runs. The 76 liquifire was that little extra and handling so much better. I no nothing of the Kawasaki but possibly with twin pipes, peel heads down and some c12 mix she do the job !! :sled: I just think John deere was ahead of the curve back then. Especially pre 79.
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jep_800
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Real Name: Jason
Location: Grand Forks, ND

Re: Impromptu nostalgia race

Post by jep_800 »

Wow! That's Impressive! Nice job!
1975 John Deere 800
1975 JDX8 (VC Finisher 2019)
1976 440 Cyclone (VC Finisher 2022)
1974 El Tigre 440 (Sold)
1996 Arcitc Cat 440Z
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ihengineer76
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Real Name: Tom Rehberg
Location: SC Wisconsin

Re: Impromptu nostalgia race

Post by ihengineer76 »

Properly designed twin pipes, Kawasaki six port cylinders, Deere heads with combustion chambers cut for proper quench, and Wiseco pistons along with an HSR off an 82-84 will go along way to waking it up. Kelly Voss would be a good person to get some information from as he has done a fair amount of dyno work on this engine. He is on the JD Facebook groups. There is also a Polaris ignition that will work very similarly to the HSR, but I can't remember it off the top of my head.
1976 Liquidator - 970 mile raced sled
1975 340/S - I-500 raced sled
1978 440 Liquifire
AirborneX4Special
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Real Name: Pat
Location: N. IL

Re: Impromptu nostalgia race

Post by AirborneX4Special »

I have some handwritten notes from a racer back in the day. I can dig them out and peruse and see what's there. The notes are a couple notebook pages long and pretty much deal with all manner of tips and modifications that include engine work.
Popcorn popper
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Re: Impromptu nostalgia race

Post by Popcorn popper »

Thanks guys. Are the 6 port jugs on just the Ltd? Or did the invaders all run those?
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ihengineer76
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Re: Impromptu nostalgia race

Post by ihengineer76 »

Yup, just in the LTD 4/6.
1976 Liquidator - 970 mile raced sled
1975 340/S - I-500 raced sled
1978 440 Liquifire
Popcorn popper
Posts: 220
Joined: Tue Dec 29, 2020 6:21 pm
Real Name: Steve

Re: Impromptu nostalgia race

Post by Popcorn popper »

Might be tough to find up here. I’ll start hunting.
Popcorn popper
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Re: Impromptu nostalgia race

Post by Popcorn popper »

If anyone has 4/6 cylinders under their bed I’d be happy to buy.
Popcorn popper
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Re: Impromptu nostalgia race

Post by Popcorn popper »

Would any of you have Kelly’s number?
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