engine block question
- Thread starter denny
- Start date
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Quickstop [UK]
Combating adversyty.
Re: engine block question
What kind of block is that - ? They look like vents/drain holes.
There also isn't anywhere to mount the retainer for the lifter spider thing..
Where did you find that thing?
What kind of block is that - ? They look like vents/drain holes.
There also isn't anywhere to mount the retainer for the lifter spider thing..
Where did you find that thing?
blk00z28
Forced to by choice
Re: engine block question
I could see where they were hold downs for closing off the valley, but odd they'd be there, and that big with no threads in them. But I could also see them being vent tubes, but why vent tubes. That area shouldn't really get a lot of pressure, and if it did, it would just go through the pushrod holes in the head. Maybe another type of oiling?
nallj92
Active member
Re: engine block question
http://www.jegs.com/i/JEGS/555/23615/10002/-1?parentProductId=751000
beathers, same concept as the link. the bowties often used these is asa and other circle track cars. usually for dry sump set ups used to let the oil drain on the front and back of the block rather than down the center causing less windage on the rotating assembly.
http://www.jegs.com/i/JEGS/555/23615/10002/-1?parentProductId=751000
beathers, same concept as the link. the bowties often used these is asa and other circle track cars. usually for dry sump set ups used to let the oil drain on the front and back of the block rather than down the center causing less windage on the rotating assembly.
REVEREND HARMON
Party in a box!
Re: engine block question
To me it looks like someone was trying to make it so that no gunk gets to the bottem end. With the screen covering the front and rear of the valley. Then raised tubes up so nuthin can fall in. Kinda like baffles.
:2cents:
To me it looks like someone was trying to make it so that no gunk gets to the bottem end. With the screen covering the front and rear of the valley. Then raised tubes up so nuthin can fall in. Kinda like baffles.
:2cents:
REVEREND HARMON
Party in a box!
jwaller
Evil Genius/SyTy Guru
Re: engine block question
those are air vents. with the lifter valley blocked off the air that is displaced by oil returning to the bottom end must go out somehow and that is it.
you usually see the valley blocked like this so that you don't get oil draining onto the cam causing more drag on the motor. you want the oil to drain from the heads to the pan without touching any rotating parts.
my alum bowtie motor is the same way.
those are air vents. with the lifter valley blocked off the air that is displaced by oil returning to the bottom end must go out somehow and that is it.
you usually see the valley blocked like this so that you don't get oil draining onto the cam causing more drag on the motor. you want the oil to drain from the heads to the pan without touching any rotating parts.
my alum bowtie motor is the same way.
Re: engine block question
I like how they smoothed out the valley area helps w drain back and makes sure no loose casting material, the tubes are vents for the cranks and so no oil runs across the cam (windage). also the screens are to trap any mid size parts from falling all the way to the oil pan like bearing in the rocker arms
I like how they smoothed out the valley area helps w drain back and makes sure no loose casting material, the tubes are vents for the cranks and so no oil runs across the cam (windage). also the screens are to trap any mid size parts from falling all the way to the oil pan like bearing in the rocker arms
