Anonymous-0
Well-known Member
I have a Detroit 453N, oil pressure is around 40psi at high rpm and at idle about 10psi, is this normal?
- Thread starter Anonymous-0
- Start date
J.Wondergem
Well-known Member
- Location
- Rockford, Mi.
Sounds good to me. A Detroit 2 cycle is easier on bears than a 4 stroke.
Sounds about right for a good used engine. Everything including the rocker arms run full oil pressure, so they have a lot of places to leak pressure at idle.
On most DD 2cycles, the oil pressure and tachometer rpm go up in lockstep, like the pressure relief valve never opens.
On most DD 2cycles, the oil pressure and tachometer rpm go up in lockstep, like the pressure relief valve never opens.
buickanddeere
Well-known Member
What weight oil and what coolant temp.
Anonymous-0
Well-known Member
30W and 180 coolant temp
Anonymous-0
Well-known Member
30w, I was told not to use 15w-40
buickanddeere
Well-known Member
Good. Oil should be a low ash SF-2 to prevent scuffing and seizing.
buickanddeere
Well-known Member
Lots of two stroke Detroits get wrecked with the wrong oil too. The pistons, rings and sleeves get scuffed and the engine looses compression. Then the ether can comes out to aid starting........
Detroit Diesel is adamant and repeat them selves several times all through the manuals. Use low ash SF-2 straight weight oil.
I would assume the DD company is telling customers such for a reason.
When we rebuilt both 2-53's. One in particular had exhaust ports were full of hard baked metallic/mineral ash/deposits. Didn't look like the remains of burned diesel fuel either.
Detroit Diesel is adamant and repeat them selves several times all through the manuals. Use low ash SF-2 straight weight oil.
I would assume the DD company is telling customers such for a reason.
When we rebuilt both 2-53's. One in particular had exhaust ports were full of hard baked metallic/mineral ash/deposits. Didn't look like the remains of burned diesel fuel either.
I'm not disagreeing with ya... I'm just saying as a matter or practice, 15W40 is better than 10W30. Some days it's not easy to obtain 30 around here anymore. There's no green demons on the road around here now and the last precious few that are still screaming are found in old TimberJack's... one of which I'm running as of lately.
It is indeed one of the exhaust port coked examples that takes a blast from the heroin can to start when it's cold.
It's little wonder the Cummins 'B' displaced every damn one of these things by about 1990.
If I spend the day on it I vibrate for three hours afterwards... and throughout it's got to be the most gutless engine I've ever run.
The lunchtime ritual involves stopping to fill the oil and check the fuel...
They were wicked technology for 1950. Not so much today...
Rod
It is indeed one of the exhaust port coked examples that takes a blast from the heroin can to start when it's cold.
It's little wonder the Cummins 'B' displaced every damn one of these things by about 1990.
If I spend the day on it I vibrate for three hours afterwards... and throughout it's got to be the most gutless engine I've ever run.
The lunchtime ritual involves stopping to fill the oil and check the fuel...
They were wicked technology for 1950. Not so much today...
Rod
buickanddeere
Well-known Member
Can't disagree although many DD problems would disappear if given the factory updates. And if the operators properly used and serviced them. Those 3-53's in a Timberjack can make 100hp with the four valve heads, 45 or 50 injectors and 2800rpm. With that flat torque curve they are the fastest accelerating up through the gears but without torque rise when lugged. A DD bogs unless geared down when overloaded.
Torque rise is the problem in the TJ... when the old thing comes up on a stump, cradle hill or mud hole... it just bogs down and stalls. Wound up it's not too bad... but the old TJ itself doesn't particularly care for anything being wound up. Doesn't take much to send a drive shaft flying. As a comparison I've run a TreeFarmer C6D with the Deutz engine. That's a bunch more powerfull... but it's also got a pile more weight to drag around... but still does it effortlessly because of it's torque.
Rod
Rod
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