Crankcase Oil Squirters on 2005 ZX10 - Kawasaki ZX-10R.net
 
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post #1 of 9 Old 01-15-2012, 10:41 AM Thread Starter
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Crankcase Oil Squirters on 2005 ZX10

Hey Gents,
HELP!!!!
I cannot find any information on this issue, so I'm throwing a question out there to everyone who builds race engines for fun or profit...

I am reassembling my engine with the new forged pistons, Carrillo rods, bearings, etc. and just discovered that only one cylinder has an OPEN oil jet leading from the top half of the crankcase void above the bearing shell toward the piston! The other 3 cylinders are plugged with a solid fitting; no drilled hole in it at all.

It seems to me that every cylinder could benefit from improved small end pin lubrication and piston cooling, but I am reluctant to drill out the 3 solid plugs like the 4th unless someone more knowledgeable than me can tell me it's OK to do so.

OOPS - sorry: Gen 1 ZX-10R - I found a parts catalog on-line that has P/N 92062 orifice and it indeed shows it on only the cam end cylinder. The other 3 cylinders all have an allen plug, P/N 290. Does anyone know if this can be changed to allow oil spray to all 4 cylinders?
Thanks in advance guys!
Jim

Last edited by zx10racer; 01-15-2012 at 04:34 PM. Reason: More information!
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post #2 of 9 Old 05-25-2012, 11:30 AM
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The newer motors use four squirters. Same part #.
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post #3 of 9 Old 07-04-2012, 12:33 PM
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I had the same observation.....not sure myself either.

2004 ZX10R-few mods here and there......
and even made more Evil by Woolich.
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post #4 of 9 Old 07-04-2012, 12:55 PM
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....just out of curiosity: is the squirter on the piston closest to the thermostat housing? There's a good chance that squirter is for cooling rather than lubrication. :)

Attack life... it's going to kill you anyway.
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post #5 of 9 Old 07-05-2012, 08:29 AM
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Quote:
Originally Posted by SpazOnaZX View Post
....just out of curiosity: is the squirter on the piston closest to the thermostat housing? There's a good chance that squirter is for cooling rather than lubrication. :)
not so much....the thermo is in the middle of the head, and the squirter is on the #1 or #4 (can't recall)....

2004 ZX10R-few mods here and there......
and even made more Evil by Woolich.
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post #6 of 9 Old 07-05-2012, 08:48 AM
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GTK.... I know the first gens zx-14/concours have that issue on the #3 & #4 in a big way.

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post #7 of 9 Old 07-06-2012, 04:28 AM
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Would unblocking those squirters cause a pressure drop?

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post #8 of 9 Old 07-09-2012, 05:37 AM Thread Starter
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Quote:
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Would unblocking those squirters cause a pressure drop?
I thought it might cause lower flow to the bearings, so I also blueprinted the oil pump to reduce operating clearances, installed a high-pressure bypass valve, and restricted the oil flow 50% to the transmission bearings. Using 5W-20 syn oil I have 40 psi oil pressure at 2000 rpm and 60 psi at 6000rpm. Haven't had the foresight to look down at the gauge at 13K rpm - probably over 100 psi.
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post #9 of 9 Old 07-10-2012, 02:29 AM
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Quote:
Originally Posted by SpazOnaZX View Post
....just out of curiosity: is the squirter on the piston closest to the thermostat housing? There's a good chance that squirter is for cooling rather than lubrication. :)
piston squirters were designed for cooling of the piston
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