thoughts on removing oil injectors?
09-22-2010, 09:33 AM
#83
Correction, they are called oil jets, not oil squirters, lol.
I would NOT remove them. Everytime I open the motors that have been prepped for N/A or turbo applications, always the bottom of the piston looks pretty and shinny. I guess the oil JETS are doing their job.
What the hell, remove them and report to us about 1 year from now.
Edit: the engine block I got is from a Mazda Protege LX, it also uses ball and spring, FYI, no need to use a lot of torque to tighten them. If I remember its about 10 psi.
I would NOT remove them. Everytime I open the motors that have been prepped for N/A or turbo applications, always the bottom of the piston looks pretty and shinny. I guess the oil JETS are doing their job.
What the hell, remove them and report to us about 1 year from now.
Edit: the engine block I got is from a Mazda Protege LX, it also uses ball and spring, FYI, no need to use a lot of torque to tighten them. If I remember its about 10 psi.
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09-22-2010, 11:07 AM
#85
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It's been a while since I saw a Miata oil squirter up close -- are they the usual ball and spring type that opens up at a certain oil pressure, or simply a redirected leak?
That's curious about the stock Miata pistons' lack of holes. The oil's gotta leak out of the oil groove somehow. Sometimes it happens on the outside surface of the piston -- is there a notch or channel on the outside that connects the oil groove to the wristpin?
That's curious about the stock Miata pistons' lack of holes. The oil's gotta leak out of the oil groove somehow. Sometimes it happens on the outside surface of the piston -- is there a notch or channel on the outside that connects the oil groove to the wristpin?
I suspect most all the aftermarket pistions I have seen will have some degree of oil control issues because of their design in combination with the oil squirters.
FWIW on my FM 2.0L the wrist pin hole cuts half way throught the oil control ring groove.
Bob
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10-31-2010, 07:55 PM
#86
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To add to the story
So my autocross/track season is over and I am finally getting around to re assembling the 2.0L
An interesting discovery. I planned on removing the oil squirters anyway but checking the new pistons it looks like they would be incompatible with the oil squirters anyway. The stock oil squirter hits the new location of the reinforcing rib on the underside of the piston squarely.
These are new FM Wiseco’s
Bob
So my autocross/track season is over and I am finally getting around to re assembling the 2.0L
An interesting discovery. I planned on removing the oil squirters anyway but checking the new pistons it looks like they would be incompatible with the oil squirters anyway. The stock oil squirter hits the new location of the reinforcing rib on the underside of the piston squarely.
These are new FM Wiseco’s
Bob
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10-31-2010, 08:04 PM
#87
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To add to the story
So my autocross/track season is over and I am finally getting around to re assembling the 2.0L
An interesting discovery. I planned on removing the oil squirters anyway but checking the new pistons it looks like they would be incompatible with the oil squirters anyway. The stock oil squirter hits the new location of the reinforcing rib on the underside of the piston squarely.
These are new FM Wiseco’s
Bob
So my autocross/track season is over and I am finally getting around to re assembling the 2.0L
An interesting discovery. I planned on removing the oil squirters anyway but checking the new pistons it looks like they would be incompatible with the oil squirters anyway. The stock oil squirter hits the new location of the reinforcing rib on the underside of the piston squarely.
These are new FM Wiseco’s
Bob
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10-31-2010, 09:26 PM
#90
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It looks like Maraha modifies the location of the alignment pin to get them to clear a similar sort of piston.
More stroke. Interesting the skirt on the FM stroker piston skirts already sticks out the bottom of the cylinder at the bottom of the stroke. Maraha must stick out even more.
Bob
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11-02-2010, 11:22 AM
#93
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2. It's a ******* shadow in the pic.
D. You can't install pistons 180* around. Not if they have valve pockets, anyway.
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11-02-2010, 02:29 PM
#94
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when he wrote that i checked my supertech 8.8:1 pistons i have on my shelf.
they arent symetrical... so if the poster had them in wrong that is a valid point.
there is a relief in the skirt for the squirter on my pistons.
One of the engine builders i talked to recently mentioned boring out the oil passages... would this be for the bearings or the squirters?
they arent symetrical... so if the poster had them in wrong that is a valid point.
there is a relief in the skirt for the squirter on my pistons.
One of the engine builders i talked to recently mentioned boring out the oil passages... would this be for the bearings or the squirters?
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11-02-2010, 02:34 PM
#95
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D. No ****. The pistons also normally have cutouts for the oil squirters on one side.
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04-24-2014, 05:29 PM
#96
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For everyone that has removed the oil squirters what have you plugged the holes with?
M10 x 1.25 bolts with copper washers?
Cut and flattened the factory squirters nozzles?
M10 x 1.25 set screws with threadlocker/theadsealer?
M10 x 1.25 bolts with copper washers?
Cut and flattened the factory squirters nozzles?
M10 x 1.25 set screws with threadlocker/theadsealer?
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04-24-2014, 05:48 PM
#97
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Fun fact.
When Ford built the new Boss 302, they modified the 412 hp "coyote" engine to make 444 hp with different camshafts and intake manifold. They also gave it forged pistons and removed the oil squirters.
Not saying you should remove them. But its not that retarded of an idea. If you have a forged bottom end and want reliable oiling at high rpm, I would consider ditching them.
EDIT:
4 year old thread. Why.
When Ford built the new Boss 302, they modified the 412 hp "coyote" engine to make 444 hp with different camshafts and intake manifold. They also gave it forged pistons and removed the oil squirters.
Not saying you should remove them. But its not that retarded of an idea. If you have a forged bottom end and want reliable oiling at high rpm, I would consider ditching them.
EDIT:
4 year old thread. Why.
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04-24-2014, 05:52 PM
#98
Fun fact.
When Ford built the new Boss 302, they modified the 412 hp "coyote" engine to make 444 hp with different camshafts and intake manifold. They also gave it forged pistons and removed the oil squirters.
Not saying you should remove them. But its not that retarded of an idea. If you have a forged bottom end and want reliable oiling at high rpm, I would consider ditching them.
EDIT:
4 year old thread. Why.
When Ford built the new Boss 302, they modified the 412 hp "coyote" engine to make 444 hp with different camshafts and intake manifold. They also gave it forged pistons and removed the oil squirters.
Not saying you should remove them. But its not that retarded of an idea. If you have a forged bottom end and want reliable oiling at high rpm, I would consider ditching them.
EDIT:
4 year old thread. Why.
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04-24-2014, 06:21 PM
#99
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Fun reading my old post.
FWIW my engine still going strong without the oil squirters and has lasted now 3X longer than any of my 350+hp builds that all failed with oil consumption, bearing, and piston wall wear issues.
Bob
FWIW my engine still going strong without the oil squirters and has lasted now 3X longer than any of my 350+hp builds that all failed with oil consumption, bearing, and piston wall wear issues.
Bob
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