New 470 dry sump engine
- Thread starter AndyF
- Start date
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gardnerjamesw
Well-Known Member
very nice!
Sweet. Keep us updated. Kim.
It has a distributor but it is belt driven off the nose of the cam rather than the gear driven type that stock big blocks have. The next engine I build will not have a distributor. I'm switching over to CnP for it. (coil near plug with 8 coils)
grean meany
Well-Known Member
thanks andyHemirunner
Well-Known Member
Love the clear valve covers, that's prettt neat. I do have one question about dry sump systens though. What do they do for oil slinging if they do it at all? My old shop class instructor said that some wet sump engines use the motion of the crankshaft counterweights to pick up oil from the sump and throw it at the bottom of the piston to suck some heat out of it and keep the cylinder walls lubed. How do they accomplish this on dry sump engines? Is it even necessary?
Hemirunner
Well-Known Member
Are you using the same intake for testing the 270?
jos51700
Green Bearing thread connoisseur
Dry sump engines use the bleed oil from the rod journals to lube the cylinder walls, and there's always plenty of oil mist in a running motor.
If you look at two strokes, ALL they have is oil mist, even for the crank (some do pressure feed the crank but most don't)
The piston oilers are more about cooling than anything.
Dry sump systems usually oil better than a wet sump due to less abuse of the oil (less frictional heating and aeration)
And more power/efficiency!
If you look at two strokes, ALL they have is oil mist, even for the crank (some do pressure feed the crank but most don't)
The piston oilers are more about cooling than anything.
Dry sump systems usually oil better than a wet sump due to less abuse of the oil (less frictional heating and aeration)
And more power/efficiency!
replicaracer43
Grumpy Old Man
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It's really amazing the amount of oil that gets shook off those rockers even at that speed.....
Awesome, thanks. I figured that they did something along the lines of using a jet/nozzle.
That was the subject of some debate! The original plan was to use my Wilson M1 4500 intake with the 240 heads and then run an Indy 400-3 with the 270 heads since they are a MW port. But the Indy intake is a fairly poor design so then we got worried that the crappy intake would kill off the gains from the 270 head. No easy way around it since I don't have a ported low deck MW intake on hand. Trick Flow doesn't have a MW port size intake to go with the 270 heads so no help there and nobody else builds a low deck MW intake.
Thenwhat85
built not bought
This is an old thread but I still have some pictures saved from that project. I used a Peterson 5 stage pump for the dry sump testing. I switched over to a Peterson belt driven pump with a wet sump later in the testing. That worked pretty well also. I still have the dry sump pan that I used during the tests if you need a pan.
wingrider
Active Member
Boy, I would certainly be interested in that pan!
Jesus Chrysler
Forgiving Sins Against Mopar Since 1983
I’m interested in where someone would stash that oil can under an A body hood!
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