If it is a 110, then the engine itself will be a bit longer; somewhere between 6-10mm?. Nothing a little boring in the frame mount holes can't handle. I have a 110 in my US90 frame which has a fixed front engine mount. Your front mount is removeable so it's even easier to modify. Getting it in is the easy part. It's things like carb mounts, electrical, exhaust set ups that will be the challenge I'm thinking.
Trikes
1970/71 US 90 (Aquarius Blue)
1970/71 US 90 (Future Project)
1972/73 US 90 Camo Project (110 Big Bore)
1972/73 US 90 Green
1982 ATC 70
1983 ATC 70 (Ladybug)
1973 ATC 70
1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain
TF 2015
Other
1983 Honda Z50
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The chinese engines are all built off the Honda 50/70 bottom end dimensions, at least all the ones I've see 110 and under. I believe that the bottom engine mount is the same, the top one requires some extra pieces of metal added to serve as extensions to reach the original hole in the frame. I may have that backwards, though.
On an interesting side note, the late Honda TRX90 engines are also built off the 70 bottom end, rather than the ATC90 engine. Weird.
1985 Tri-Z 250
1985 ATC250R
I put a china 110 in a atc 70. It bolted right up. All the holes lined up perfect.
YAMAHA 450 HYBRID
85 350X- RED
85 350x -BLACK
86 350x-WHITE (with Goki)
85 250r
83 atc 70
84 atc 70
84 atc 110
09 yfz 450
2006 Arctic Cat Prowler
RZR XP 900
Trikes
1970/71 US 90 (Aquarius Blue)
1970/71 US 90 (Future Project)
1972/73 US 90 Camo Project (110 Big Bore)
1972/73 US 90 Green
1982 ATC 70
1983 ATC 70 (Ladybug)
1973 ATC 70
1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain
TF 2015
Other
1983 Honda Z50
Feedback http://www.3wheelerworld.com/showthr...ck-for-coopool
http://www.3wheelerworld.com/showthr...k-for-coolpool
That's a Chinese motor defintetly, bottom end is similar, but the top end parts and stuff are completely different, and that picture below the Chinese motor did that require machining and fabrication to remove the hi and lo range on the Honda ATC motor?
I would not do it.
Look around for an ATC110 engine and front engine mount. The Chinese 110 mounts are different, footpeg bolt pattern is different, wiring, inlet, exhaust, all different.
Poxy little engine bearings, cylinder, crank, clutch. Plus there is no electric starter on that motor pictured. How are you going to start it?
Without a front engine mount the stock atc90 frame will break right at the base of were the tank meets , the motor is part of the structural integrity of the frame so the answer to your question should be very clear now LOL .
78 atc 90/180cc Dickson Full Suspension
76 ATC90/180cc Nicholson
77 atc 90 Dickson Full Suspension
84 KLT 110/123cc Powroll Racer from 80s
87 atc 125m stock
84 atc 200x Curtis Sparks
84 atc 200x Powroll My race bike from 80's
83 atc70/108cc Powroll blue Xmas Special
81 atc185s HP-ATC full suspension
Performance Shop is Open PM me for Service
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It can be done but as recommended I would fab up a front engine mount to support the 90 frame properly. I have a Honda based Chinese motor (Piranha 150cc) in my US90 that took some motor mount and front head mount fabrication to install. However it won't be exactly the same as yours as I'm running a Dickson Designs Sprint tube chassis vs the stock stamped 90 frame. The head mount was made from a block of aluminum and replaces the motors end plate, then mounts to the Frame with some custom aluminum side plates that sandwich the motor plate.
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For starting I'm simply using a Honda 70 pull start assembly and a billet Spangler's flywheel cage mounted to the stock Piranha flywheel and a crank case adapter plate. Easy to pull start the 150cc with the right technique.
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It definately can be done but I probably would waste my time with a 110cc motor but rather something bigger to make the work worthwhile.
1985 ATC 350X all original/OEM Honda parts
1972 US90 Dickson Designs 2" stretched tube chassis, 200x Forks, Piranha 150cc, VM26
1985 ATC70 Piranha 114cc BBK, Ported Race Head, TB300 Cam, Spangler's Exhaust
1985 ATC70 Piranha 150cc, VM26, Z40 cam, Ported head, Two Brothers Exhaust, 2" stretch
1970 Honda CT70125cc Mikuni 24, XR80 Forks, Aluminum Swingarm, Carbon Exhaust
1972 Honda CT70110cc e-start, Mikuni 20 carb, Carbon Exhaust, Aluminum Wheels
1993 Honda Z50R all original
Thanks for all the info guys. Im going to steer away from this one