Planet Minis

crf50luke · 05-06-2009, 08:30 AM

i learned this from my uncle who had 2 atc 70s. well one of he 70s had blown up and he got an idea to put his atc110 motor in. it fits perfectly u just have to change the middle head cover. its a good idea for a little extra power

dirtbkr188 · 05-06-2009, 02:40 PM

Hmmm...I've always been under the impression that the dual-range transmission engines were not a plug-n-play fit, because of the different lower end configuration.

fatcaaat · 05-06-2009, 03:03 PM

No way plug and play...dual range tranny, different bolt patterns, and 428 vs 420 chains.

tree18is · 05-06-2009, 11:11 PM

no way, you must modify the frame to fit the tranny.. ive seen it slammed into the frame and not fit.
plus with the 428 chain it would make it a PITA to fit a 428 chain on the 420 rear sprocket.

Motodad · 05-07-2009, 12:35 PM

Several years ago I put a 110 dual range engine in my atc70. It was a very easy fit. I used all the electronics from the 110. A 428 chain will fit on the 420 rear sprocket. The only thing I had to do was drill a hole for the rear engine mount. If I remember right it was 1" further back than the 70 engine. No issues with the dual range selector. The only drawback was the weight of the 110 engine.

tree18is · 05-08-2009, 02:10 AM

dang, I passed up a motor because I seen it not fitting.. crazy.
post some pics of your swap when your done.

crf50luke · 05-10-2009, 02:35 PM

i never said plug and play but it would fit very easy

05-06-2009, 08:30 AM	#1 (permalink)
crf50luke 2nd Gear Member Join Date: Mar 2008 Location: laton,cA Posts: 392 My Mood:	70 tip n trick i learned this from my uncle who had 2 atc 70s. well one of he 70s had blown up and he got an idea to put his atc110 motor in. it fits perfectly u just have to change the middle head cover. its a good idea for a little extra power

05-06-2009, 02:40 PM	#2 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,971	Re: 70 tip n trick Hmmm...I've always been under the impression that the dual-range transmission engines were not a plug-n-play fit, because of the different lower end configuration.

05-06-2009, 03:03 PM	#3 (permalink)
fatcaaat 3rd Gear Member Join Date: Sep 2004 Location: Arlington, VA Posts: 3,778	Re: 70 tip n trick No way plug and play...dual range tranny, different bolt patterns, and 428 vs 420 chains.

05-06-2009, 11:11 PM	#4 (permalink)
tree18is 1st Gear Member Join Date: Jan 2008 Location: San Antonio tx Posts: 148	Re: 70 tip n trick no way, you must modify the frame to fit the tranny.. ive seen it slammed into the frame and not fit. plus with the 428 chain it would make it a PITA to fit a 428 chain on the 420 rear sprocket.

05-07-2009, 12:35 PM	#5 (permalink)
Motodad 1st Gear Member Join Date: Oct 2006 Posts: 197	Re: 70 tip n trick Several years ago I put a 110 dual range engine in my atc70. It was a very easy fit. I used all the electronics from the 110. A 428 chain will fit on the 420 rear sprocket. The only thing I had to do was drill a hole for the rear engine mount. If I remember right it was 1" further back than the 70 engine. No issues with the dual range selector. The only drawback was the weight of the 110 engine.

05-08-2009, 02:10 AM	#6 (permalink)
tree18is 1st Gear Member Join Date: Jan 2008 Location: San Antonio tx Posts: 148	Re: 70 tip n trick dang, I passed up a motor because I seen it not fitting.. crazy. post some pics of your swap when your done.

05-10-2009, 02:35 PM	#7 (permalink)
crf50luke 2nd Gear Member Join Date: Mar 2008 Location: laton,cA Posts: 392 My Mood:	Re: 70 tip n trick i never said plug and play but it would fit very easy

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