Forum: Troubleshooting
07-01-2013, 11:19 PM
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Replies: 2
Views: 865
Re: Rebuilt Engine Quits
I noticed the cotter valve did not have a groove on the inside. It was smooth, so maybe that is all it needs. I don't have the tool that measure spring tension pressure, but it took a bit of...
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Forum: Troubleshooting
07-01-2013, 08:41 PM
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Replies: 2
Views: 865
Rebuilt Engine Quits
Hi,
I took the head to a machine shop to do a valve job and they also honed the cylinder walls. I put new valves in, and reassembled the engine, which ran great for about 400 miles. My daughter...
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Forum: Complete Bikes
06-12-2013, 04:54 PM
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Replies: 2
Views: 1,532
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Forum: Instructional Articles
01-16-2013, 03:59 PM
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Replies: 10
Views: 4,736
Re: Cylinder Head Question
You need to remove one of the circlips, then tap the piston pin out with a wooden dowel pin. Make sure you put a towel over the crankcase to prevent the circlip from falling into the crankcase.
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Forum: Instructional Articles
01-16-2013, 03:59 PM
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Replies: 10
Views: 4,736
Re: Cylinder Head Question
You need to remove one of the circlips, then tap the piston pin out with a wooden dowel pin. Make sure you put a towel over the crankcase to prevent the circlip from falling into the crankcase.
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Forum: Troubleshooting
12-18-2012, 01:28 PM
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Replies: 1
Views: 918
Piston-Head interference Issue
Hi,
I disassembled the low compression engine and took the head, camshaft, cylinder and head to a machine shop to have them do a valve job, rehone/rebore the cylinder and fit new rings in it. The...
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Forum: Troubleshooting
12-17-2012, 12:48 AM
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Replies: 9
Views: 1,390
Re: How To Check Piston Rings
I am referring to the head gasket, but the gasket between the cylinder and the crank case. It is black and paper thin.
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Forum: Troubleshooting
12-16-2012, 03:23 PM
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Replies: 9
Views: 1,390
Re: How To Check Piston Rings
Another problem I had was lining up the crankshaft and camshaft. With everything in position as per the manual, one of the two bolt holes to the camshaft sprocket is obscured by the side of the...
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Forum: Troubleshooting
12-16-2012, 03:16 PM
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Replies: 9
Views: 1,390
Re: How To Check Piston Rings
I am taking the heads, the piston, the cylinder, and the camshaft to a machine shop for them to do a valve job and to hone out the cylinder wall or bore it out, whichever it needs. I will get the...
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Forum: Instructional Articles
12-15-2012, 02:08 PM
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Replies: 304
Views: 94,938
Re: Install a 16 Tooth Front Sprocket
Without a tachometer, how does one know whether the engine is redlining at WOT. This bike is for my 130 pound daughter to learn to ride. I am also considering a 16 tooth front sprocket to keep the...
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Forum: Troubleshooting
12-12-2012, 01:06 PM
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Replies: 9
Views: 1,390
How To Check Piston Rings
Hi,
I have an 2001 GZ250 with 10K miles, and the engine suddenly has lost power. I pulled the head and everything looked ok to me, no broken rings, the valves appear ok. Carbon buildup on top of...
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Forum: Troubleshooting
11-27-2012, 12:08 PM
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Replies: 7
Views: 1,010
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Forum: Troubleshooting
11-27-2012, 11:13 AM
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Replies: 7
Views: 1,010
GZ Nightmare
Hi,
I bought a 2001 GZ250 with about 10,000 miles from a guy for $600, took it home, and changed the oil and replaced the chain, which was kinked. The bike ran pretty good for about 500 miles...
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Forum: Parts & Accessories
10-19-2012, 01:50 PM
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Replies: 2
Views: 732
How to fix burnt Valves?
Hi,
I am looking at a bike that has the head off due to burnt valves. Can new valves be swapped out and everything put back together, or do the valve seats need to be machined?
Are there any...
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Forum: Troubleshooting
10-18-2012, 12:10 AM
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Replies: 9
Views: 1,064
Burnt Exhaust Valves-How Prevalent?
Hi,
After my GZ250 grenaded itself with a broken-off exhaust valve, I have noticed that others have had problems with their exhaust valves, also. How common is this problem?
Someone contacted...
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Forum: Troubleshooting
10-16-2012, 04:41 PM
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Replies: 14
Views: 1,490
Re: Grenaded Engine
I placed an ad for an engine for the GZ, and a guy is trying to sell me his GZ250 with a bad exhaust valve for $250. It has a new battery and new tires, and has a title. I am thinking about it, but...
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Forum: Troubleshooting
10-01-2012, 01:28 AM
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Replies: 14
Views: 1,490
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Forum: Gadgets & Farkles
09-28-2012, 11:47 AM
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Replies: 8
Views: 7,954
Windshield Recommendation for GZ250
Hi,
I am in the market for a windshield for my GZ250. I am thinking about the Slipstreamer SS28 windshield, but am concerned it might be too large and kill the top end.
Anyone with this shield...
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Forum: Troubleshooting
09-28-2012, 11:43 AM
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Replies: 14
Views: 1,490
Re: Grenaded Engine
She took a 3 day motorcycle rider safety course, but, like most of the fairer sex, she is hardheaded. I specifically told her to take the back roads, but she was in a hurry, so she says.
Should I...
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Forum: Troubleshooting
09-27-2012, 08:32 AM
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Replies: 14
Views: 1,490
Grenaded Engine
Hi,
I bought a 2001 GZ250 with 10,000 miles on it for my 25 year old daughter to learn to ride on the road. I removed and cleaned out the carburetor, put a new spark plug in and changed the oil...
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