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Post by jc on Apr 23, 2016 22:49:57 GMT -5
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Post by jc on Apr 3, 2016 1:58:24 GMT -5
No reassembly of a chinese engine is complete without a sheared crankcase bolt!
Will have to split the case again and dig out the broken bolt. I will replace all case bolts with good quality, new bolts.
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Post by jc on Mar 30, 2016 7:56:46 GMT -5
New crankshaft arriving today!!!
UPDATE! - Yay the crankshaft fits! Now I'm just waiting on the gasket set and oil pump and chain and shouldnt take much to git 'er back together!
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Post by jc on Mar 26, 2016 21:23:53 GMT -5
Well the china link for a 200cc swap fell through so i am just going to rebuild this engine stock.
Finally got the rotor off, and crank out. The oil pump can only be turned with a wrench so this may have been what started the problems. New crank ordered from Scrappydogscooters. I'll probably get the top end rebuild kit for the new piston and a backup cylinder. I may just put the new cylinder on and play with boring out the used cylinder and increase the engine size a bit without needing to widen the case.
The project plan is taking shape.
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Post by jc on Mar 20, 2016 10:38:49 GMT -5
No suggestions but you are the third CPI GTR owner I have heard of who has lost the motor. The other two who I know personally had the end of the crank shear off while they were riding. Getting a 250 scooter engine to accept a 17 inch tire will probably also be a problem not to mention the the additional weight for the engine mount to handle. Martin Racing was the source of CPI parts in the USA and they went Chapter 7 and were liquidated in 2014. www.dealernews.com/dealernews/article/martin-racing-performance-chapter-7-liquidation-auction-set-sept-9The only engine parts I have recently seen are for the 50cc 2 stroke CPI GTR 50. Its probably time to retire the bike as its an orphan here in the US. Even more of a challenge!  I can't seem to find a big bore kit for the water cooled 150. I have found a watercooled 200cc scooter engine in China if they'll sell me one. I've dound a new crank and cylinder kit here in the States so that will be my fallback plan if a new bigger motor doesn't work out. Next weekend I'm going to tear into the engine and see if I can deduce what actually went wrong. Keep any ideas y'all have coming, on direction s to go in! |
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Post by jc on Mar 19, 2016 22:18:51 GMT -5
If you are attached to that scoot chassis, a big block kit is probably your best bet. Engine swaps can result in a perpetual parade of problems to solve. Any suggestions on where to find a big block kit? |
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Post by jc on Mar 19, 2016 19:00:28 GMT -5
I love the unique styling of this scoot which is why I would like to either rebuild the 150cc water cooled engine or find a 250cc watercooled scooter engine with mounting points that are close and fab up some brackets or something. This is the scoot flic.kr/p/yy4M1cI enjoy challenges and will learn from this project whether it works or not. |
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Post by jc on Mar 19, 2016 3:33:52 GMT -5
Well......after 6000 miles of commuting, the CPI GTR 150 engine gave up the ghost. I got it home in my truck and drained the oil. The 150 mile old oil was thick and black. And this was in the oil screen...  www.flickr.com/gp/23905218@N04/Cv1jB6I haven't torn down the engine yet. I'm researching either rebuilding the 150 with a big bore kit or junk it and find a 250 motor that will fit or be made to fit. |
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Post by jc on Feb 20, 2016 10:05:18 GMT -5
Sure did! 60 degrees at 6:45 for my 30 mile commute in to Austin. 30 miles to Austin? Do you live in\near Killeen? I grew up there! I'm in Bastrop. |
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Post by jc on Feb 19, 2016 22:53:12 GMT -5
Sure did! 60 degrees at 6:45 for my 30 mile commute in to Austin.
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Post by jc on Jan 31, 2016 17:27:10 GMT -5
 2006 CPI GTR 150cc watercooled Likes: 1a. Probably the only one of it's kind in Austin, TX 1. Unique frame and bodywork design 2. paolli suspension 3. runs to 60 mph on flats highway 4. normal motorcycle size wheels, better tire selection 5. CFmoto engine so decent parts availability 6. Hydraulic front and rear brakes. 7. Did I mention the unique look? Dislikes: 1. Not much wind protection on highway 2...........nope, can't think of anything else |
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Post by jc on Jan 23, 2016 21:00:30 GMT -5
Put on some hi-perf accesories today.   New windshield and aux fuel tank making total of 3 gal and 180 mile range. :-) |
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Post by jc on Jan 7, 2016 22:20:56 GMT -5
mopojo, Thanks!
I drilled the holes in the tube you see to relieve some of the backpressure created by the catalytic converter.
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Post by jc on Jan 5, 2016 20:40:27 GMT -5
link. Try this link. It seems to work fine for me.
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