KTMphil
Senior member
Piston failure in Laos
I received an email from an intrepid rider friend in Laos yesterday, who had some engine issues!
This is what he said:
"Looks like a series of events led to this.
Blown rings early in the trip led to low oil level.
Worn cam chain scraping on engine block, produced aluminum particles that, reduce flow from oil filter to engine vitals.
Full throttle run, was too much for the worn out motor!!!
If I am lucky to get it back together for a run to Xam Neua and beyond, under $1000??
Trying to patch back together,the bike for a run to Huaphan while weather is just fantastic"
The story from Don:
Motor stuff..
Final day, assembly.
*cylinder bored
*valves and head rebuilt
*Pro X rod installed on Crankshaft
* all mating surfaces cleaned
*bearings, camshaft, rockers, clutch, gears, oil pump, inspected for wear or damage.
1) Complete gasket kit
2) All parts are laid out and cleaned
3) Press bearing for Crankshaft info right engine casing
4) Install transmission counter and main shaft
5) Press crank bearing into right engine casing
6) install gaskets bolt engine halves together
7) install Wiseco "430"cc piston and rings, cylinder in block
8) Install head, clutch, new timing chain-tensioner, side covers,
9) Drop engine into frame for test run.
cost
$200 rod
$180 piston
$100 gaskets
$90 timing chain
$180 labor, boring, crankshaft work, valve job. my time, 3 days.
$750 total cost
Chain sprokets tires and tubes.
$170
Breakdown to running 4 days.
Thanks To Fuark Moto Vientiane!!
next rewire Metal halide lighting system install additional, halogen and halide lights for night riding!!
next Rebuild output splines on Transmisson mainshaft. This is accomplished with a tig welder and hand machining 6 hours.
I received an email from an intrepid rider friend in Laos yesterday, who had some engine issues!
This is what he said:
"Looks like a series of events led to this.
Blown rings early in the trip led to low oil level.
Worn cam chain scraping on engine block, produced aluminum particles that, reduce flow from oil filter to engine vitals.
Full throttle run, was too much for the worn out motor!!!
If I am lucky to get it back together for a run to Xam Neua and beyond, under $1000??
Trying to patch back together,the bike for a run to Huaphan while weather is just fantastic"
The story from Don:
Motor stuff..
Final day, assembly.
*cylinder bored
*valves and head rebuilt
*Pro X rod installed on Crankshaft
* all mating surfaces cleaned
*bearings, camshaft, rockers, clutch, gears, oil pump, inspected for wear or damage.
1) Complete gasket kit
2) All parts are laid out and cleaned
3) Press bearing for Crankshaft info right engine casing
4) Install transmission counter and main shaft
5) Press crank bearing into right engine casing
6) install gaskets bolt engine halves together
7) install Wiseco "430"cc piston and rings, cylinder in block
8) Install head, clutch, new timing chain-tensioner, side covers,
9) Drop engine into frame for test run.
cost
$200 rod
$180 piston
$100 gaskets
$90 timing chain
$180 labor, boring, crankshaft work, valve job. my time, 3 days.
$750 total cost
Chain sprokets tires and tubes.
$170
Breakdown to running 4 days.
Thanks To Fuark Moto Vientiane!!
next rewire Metal halide lighting system install additional, halogen and halide lights for night riding!!
next Rebuild output splines on Transmisson mainshaft. This is accomplished with a tig welder and hand machining 6 hours.
