Dmace
New member
A few days ago I picked up this nice example of a great sled with a rough history. It's a 1997 V-MAX 700SX triple with 6800 miles and sold as a "project sled". I was able to get it for $500 knowing it at least needed a front heat exchanger and some suspension work. I was also given a complete Winderosa top end gasket kit and a used heat exchanger.
The sled started and drove but had a rough idle and no coolant due to a hole in the heat exchanger. So I got it home and immediately did a compression test. 100 psi in all three cylinders cold and 110 psi in all three with a warm engine. It's not bad but I'm certainly replacing the rings as the pistons are stock and in great shape plus the cylinder walls look brand new.
Today I spent a few hours doing a tear down to get to the exchanger. I removed the skid and track along with the air box, carbs, exhaust, secondary and chain case. The bearings in the chain case look very good but the jack shaft bearing will either be replaced or repacked. It's good but a little dry.
The "W" arm in the rear skid is broken in four places which is probably what led to the stud going through the exchanger. I have a mig welder so I'll just re-weld and re-enforce those areas. Also, the rear idler wheels are a little loose so I'll replace the bearings in those as well. The other wheels and shocks in the rear skid are in very good shape.
The track was in better shape than I thought so I may keep it. It's a "Polaris Camoplast" that looks near new with decent studs but has two pull through's.
So I am now ordering some parts such as rings, bearings, sliders, and possibly the clutch puller. I made my own with a bolt and rod for my old Polaris' but it's a different thread for the Yamaha clutch.
More pictures and updates will come as I have time to work on it. Luckily I have a good 3 months until the snow falls.
Click the thumbnails for larger images.
The sled started and drove but had a rough idle and no coolant due to a hole in the heat exchanger. So I got it home and immediately did a compression test. 100 psi in all three cylinders cold and 110 psi in all three with a warm engine. It's not bad but I'm certainly replacing the rings as the pistons are stock and in great shape plus the cylinder walls look brand new.
Today I spent a few hours doing a tear down to get to the exchanger. I removed the skid and track along with the air box, carbs, exhaust, secondary and chain case. The bearings in the chain case look very good but the jack shaft bearing will either be replaced or repacked. It's good but a little dry.
The "W" arm in the rear skid is broken in four places which is probably what led to the stud going through the exchanger. I have a mig welder so I'll just re-weld and re-enforce those areas. Also, the rear idler wheels are a little loose so I'll replace the bearings in those as well. The other wheels and shocks in the rear skid are in very good shape.
The track was in better shape than I thought so I may keep it. It's a "Polaris Camoplast" that looks near new with decent studs but has two pull through's.
So I am now ordering some parts such as rings, bearings, sliders, and possibly the clutch puller. I made my own with a bolt and rod for my old Polaris' but it's a different thread for the Yamaha clutch.
More pictures and updates will come as I have time to work on it. Luckily I have a good 3 months until the snow falls.
Click the thumbnails for larger images.
