23-08-2014, 05:28 PM
Hello,
We use the DW10 engine inside 2 tiny tractor pullers (~400HP@7000Krpm, 500Kpa boost @40 degree C, water injection, 260cc diesel injection 50 degree before TDC)
The first one:
https://picasaweb.google.com/minimumrisk...8880710626
And the second one:
https://picasaweb.google.com/minimumrisk...5777674882
Since we do stuff the engine wasn't intended to do there where a few small modifications: aluminium rods (got 20 at stock for whom's interested) and homemade pistons and some other minor mods to head and valves.
With these mods it tends to keep in one piece if we don't push it to hard to prevent the valve seats from melting down but there is one crucial point that is worrying: the crankshaft.
The big-ends are lubricated trough a hole that delivers a fresh oil film about 45 BTDC but unfortunately that is about the point our kaboom does it's work so we keep running into bearing issues since where a hole is there is no oil surface. (I am Dutch, sorry for the strange way to describe this)
After 2-3 runs we can see in our bearings where the ignition and hole comes together and that prevents us from making more power.
Does any of you over here nows if a XUD11 or another crank can be used that has the holes in another position?
We use the DW10 engine inside 2 tiny tractor pullers (~400HP@7000Krpm, 500Kpa boost @40 degree C, water injection, 260cc diesel injection 50 degree before TDC)
The first one:
https://picasaweb.google.com/minimumrisk...8880710626
And the second one:
https://picasaweb.google.com/minimumrisk...5777674882
Since we do stuff the engine wasn't intended to do there where a few small modifications: aluminium rods (got 20 at stock for whom's interested) and homemade pistons and some other minor mods to head and valves.
With these mods it tends to keep in one piece if we don't push it to hard to prevent the valve seats from melting down but there is one crucial point that is worrying: the crankshaft.
The big-ends are lubricated trough a hole that delivers a fresh oil film about 45 BTDC but unfortunately that is about the point our kaboom does it's work so we keep running into bearing issues since where a hole is there is no oil surface. (I am Dutch, sorry for the strange way to describe this)
After 2-3 runs we can see in our bearings where the ignition and hole comes together and that prevents us from making more power.
Does any of you over here nows if a XUD11 or another crank can be used that has the holes in another position?
