09-02-2020, 11:00 AM | #1 |
Gone Wild
Join Date: Nov 2015
Posts: 188
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Buying a Used 670
There is a used 670 on let go in my area for $300 and wanted to know if this would be a good deal assuming I replace some parts that wear most with new from Performance 670. I'm thinking cam, valves, springs, and rockers at the least? Or would I be better off getting new and running stock? This would be going into a 13 TXT 6 seater that is lifted with 25" tires. I'd be replacing diff gears too since the cart is set up for a clockwise rotation motor.
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09-02-2020, 08:42 PM | #2 |
Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,421
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Re: Buying a Used 670
If it were me I would want the new engine. But, I also have run used Vtwin engines with good success. What makes you think you NEED to replace all those parts? A well maintained 670 should last 2000 hours. If the engine in question wasn't maintained well, I would say it's a risky purchase. The only "sure bet" is going with the new engine because it will have zero hours and a warranty.
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09-03-2020, 08:18 AM | #3 | |
Gone Wild
Join Date: Nov 2015
Posts: 188
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Re: Buying a Used 670
Quote:
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09-03-2020, 03:07 PM | #4 |
Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,421
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Re: Buying a Used 670
Throwing parts on an engine that doesn't need them is not necessary. If checks out ok, just keep up on the maintenance and you should be good. Why fix it if it ain't broke? That's just throwing money away. I'd plan on a full rebuild down the road, just so you know what's coming. Maybe you'll need one, maybe you won't.
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09-03-2020, 03:39 PM | #5 |
VC 460 CLONE GONE WILD
Join Date: Oct 2014
Location: Ray BY The Bay NJ
Posts: 10,594
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Re: Buying a Used 670
He is talking about adding speed equipment from Performance 670. IF the base engine is in good shape he can build a powerful engine for less than a grand.
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09-03-2020, 06:09 PM | #6 |
Gone Wild
Join Date: Nov 2015
Posts: 188
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Re: Buying a Used 670
Dude sold it before I could grab it. I'll keep looking, no coupons on the 670s in a few months but maybe there will be a good one soon.
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10-03-2020, 08:38 PM | #7 |
Not Yet Wild
Join Date: Jan 2019
Location: Ocean City, MD
Posts: 14
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Re: Buying a Used 670
I don't think Harbor Freight is going to discount or give coupons anymore on their engines. I think the cost of parts and shipping from China has something to do with it.
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10-05-2020, 11:43 PM | #8 |
Vegas modded 420
Join Date: Jun 2009
Location: West MI
Posts: 15,433
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Re: Buying a Used 670
Most twins with pressure oiling and filter go way over 2K hours at 3600rpm constant, assuming the oil was changed and so on. I've run mowers at 3000+ hours and it was still going. But every machine and its use puts a different load on an engine.
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10-08-2020, 06:57 AM | #9 |
Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,421
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Re: Buying a Used 670
3000 hours + is possible. I've seen some Kawasaki engines run that long. I've found on lawn equipment the valves tend to build up carbon and the heads need reworked if you run them that long. Valve seals, guides, sometimes a valve job. Exhausts also need replaced around 2300-2500 hours, they rust from the inside out. The bottom ends in most of the high hour engines are still good if the oil has been changed. I would think the same of the 670, although I can't believe the Predator would be as good as a Kaw. That's why I'd guess 2000 hours on those.
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10-12-2020, 10:43 AM | #10 |
Gone Wild
Join Date: Nov 2015
Posts: 188
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Re: Buying a Used 670
Saw that HF is up to $830 now, will continue the search for a good used one. My stock Kawasaki still runs great overall, it is just gutless on hills and I don't want to lose my 30mph top end because I run it on the beach more than anywhere else so can't justify paying 800 just for the engine.
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