Yes but not one that's worth buying for a 1995 Space Wagon.
Normally an engine this old that needs a new timing chain, also needs an overhaul. I cannot tell you in this limited space how to change the chain and gears. I suggest you purchase a Haynes, or Chilton's repair manual.
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Interference engine refers to an engine design where the pistons and valves occupy the same space in the cylinder head, and they can collide if the timing belt or chain breaks. Non-interference engine design ensures that the pistons and valves have enough space and won't collide if the timing belt or chain fails. It's safer for the engine in case of a timing failure.
In a freewheeling engine, the piston tops and the valve bottoms do not share the same mechanical space, even if the timing belt or chain breaks.
If a timing chain breaks the valves will no longer be synchronized with the pistons, meaning that one or more valves will be open when a piston reaches the top of its stroke. When that happens, we all know that two objects cannot occupy the same space at the same time, so either he piston will break the valve or the valve will shatter the piston. In short, a broken timing chain generally assures instant destruction of the engine; the extent of the destruction is not always the same, depending on several factors. HOWEVER... It should be noted that the timing chain on the 4 Saturn cylinder engines seldom fails. While a timing chain should be replaced when the engine is rebuilt, it is not considered necessary to replace the timing chain the way we need to replace timing belts.
The upper oil seal on the cam is leaking. It probably wont jump time due to this but the timing belt may be damaged by the oil.
If it's the 2ltr diesel it has an automatic spring loaded tensioner mounted down below the alternator. A bit tight for space down there if you need to change it.
yes If it's a space heater - don't use diesel if it's dyed.
The 3sc means "three single crochets." When the pattern says "in chain," it means you are to perform the stitch(is) in the actual chain stitch of the row below as opposed to in the space created by the chain stitch (which would be called a "chain space.").
The 3800 engine is apush rod engine and does not use a timing bet but instead has a timing chain under the front cover much like you would find on a typical V8 engine. to get to the chain your going to have to remove the vibration dampener the water pump and any idlers and belt tensioner's from the area around the timing cover. then you should back able to get to it and replace the whole chain and sprocket assembly. the whole thing is in a tight space and your going to have keep track of all the parts you take out so they go back where they came from. a novice should probably not attempt this without help for the first time.
One can purchase diesel space heater from the following retailers: Hire heating, Sipuk, eBay, Amazon, Heatersuk, Gumtree, Way Fair, Diseal Space Heater, Northern Tools, Space Heaters UK, to name a few.
Deisel would burn too dirty...sooty. kerosene is much lighter hydro carbon and burns cleaner