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With the oil pan and lower part of the block removed, it was obvious why I had bearing failure
Together with some shavings from the bearings, we found the 4 oil squirters / piston coolers' stubs in the oil pan. They had broken off. (by the looks of it probably on the first start up already)
A little inspection revealed that the skirts of the N1 pistons had hit the oil squirters right off on the down stroke, causing about a 2mm oil "leak" where a 0.1mm pressured hole should be squirting oil. This obviously caused oil pressure drop and starved the bearings of oil leading to the failure. I'm surprised it even lasted the +/- 1000miles it did!!
Now, has anyone else had these clearance issues with N1 pistons on a VE? I see a normal 20ve piston has a relief in the piston skirt for the oil cooler. I can only assume N1 pistons have the same.
This means my "engine builder" must have either:
1) fitted the oil squirters incorrectly causing them to be in the path of the piston skirt, or
2) fitted the N1 pistons back to front with the relief facing the opposite way
Damn thats sad...but as Payu said man...sorry to hear
and sad thing is the mechanic didn't even turn the engine with just the crank and pistons to see if everything turned and cleared...we found in my car that similar problem but fixed it right away and now it clears all perfect.
but oh well...you should be up again buy some new bearings and oil squirters and rebuild.
I really think that's a point that should be added to the FAQ's in some sticky. All the posts I read on the forum never mentioned this. The consequences are as you can see severe.
Hopefully a few people will read this thread and make a note.
Got a spare 20VE I'm dropping in now then it's back to the drawing board for this block.
ps: Anyone has a set of squirters laying around. How much are they from Nissan/Mossy/Greg? I take it they differ from DET ones?
With the oil pan and lower part of the block removed, it was obvious why I had bearing failure
Together with some shavings from the bearings, we found the 4 oil squirters / piston coolers' stubs in the oil pan. They had broken off. (by the looks of it probably on the first start up already)
A little inspection revealed that the skirts of the N1 pistons had hit the oil squirters right off on the down stroke, causing about a 2mm oil "leak" where a 0.1mm pressured hole should be squirting oil. This obviously caused oil pressure drop and starved the bearings of oil leading to the failure. I'm surprised it even lasted the +/- 1000miles it did!!
Now, has anyone else had these clearance issues with N1 pistons on a VE? I see a normal 20ve piston has a relief in the piston skirt for the oil cooler. I can only assume N1 pistons have the same.
This means my "engine builder" must have either:
1) fitted the oil squirters incorrectly causing them to be in the path of the piston skirt, or
2) fitted the N1 pistons back to front with the relief facing the opposite way
!#$@$#$@#%$#@%#^
Aw man I'm betting its #2... $4 on choice 2... roll the dice!!!!
Nissan never put oil squirter notches on SR16VE pistons because the piston did not come far enough down with the SR16VE crank to interfer with the oil squiters.
The SR16VE crank is 68.70
The SR20VE cranks is 86.00
That means the piston is sitting 8.65 mm higher in the SR16VE. If you check the oil squirter notch on a VE you will see it is about 9mm or so.
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Yeah the bill was rediculous. But he is supposed to an guru and insisted I'm paying for his expertise etc.
Tomorrow I'll know what he says and if he is going to own up. I won't let him work on it again since I've found some other minor discrepancies too, so I guess he will owe me a partial refund. My guess is he will tell me that I should have told him these pistons need to be modified...
how can you tell an "expert" that insists your "paying for experience" blame you - a customer who "doesnt know" and how can he claim that its ok if he didnt test it by hand rotation first ?
If your in the states - find a happy lawyer and tell them what happened and you'll be able to sue him for your money for rebuilds or somethin :P doesnt everyone over there sue when stuff dont work? :P (just kidding - not wanting to start a flame war)
With the oil pan and lower part of the block removed, it was obvious why I had bearing failure
Together with some shavings from the bearings, we found the 4 oil squirters / piston coolers' stubs in the oil pan. They had broken off. (by the looks of it probably on the first start up already)
A little inspection revealed that the skirts of the N1 pistons had hit the oil squirters right off on the down stroke, causing about a 2mm oil "leak" where a 0.1mm pressured hole should be squirting oil. This obviously caused oil pressure drop and starved the bearings of oil leading to the failure. I'm surprised it even lasted the +/- 1000miles it did!!
Now, has anyone else had these clearance issues with N1 pistons on a VE? I see a normal 20ve piston has a relief in the piston skirt for the oil cooler. I can only assume N1 pistons have the same.
This means my "engine builder" must have either:
1) fitted the oil squirters incorrectly causing them to be in the path of the piston skirt, or
2) fitted the N1 pistons back to front with the relief facing the opposite way
!#$@$#$@#%$#@%#^
On my squirter equppied motor I almost made the same mistake. I checked just as the motor was partly together, then had to dissasemble it and notch the pistons, duh.
With the oil pan and lower part of the block removed, it was obvious why I had bearing failure
Together with some shavings from the bearings, we found the 4 oil squirters / piston coolers' stubs in the oil pan. They had broken off. (by the looks of it probably on the first start up already)
A little inspection revealed that the skirts of the N1 pistons had hit the oil squirters right off on the down stroke, causing about a 2mm oil "leak" where a 0.1mm pressured hole should be squirting oil. This obviously caused oil pressure drop and starved the bearings of oil leading to the failure. I'm surprised it even lasted the +/- 1000miles it did!!
Now, has anyone else had these clearance issues with N1 pistons on a VE? I see a normal 20ve piston has a relief in the piston skirt for the oil cooler. I can only assume N1 pistons have the same.
This means my "engine builder" must have either:
1) fitted the oil squirters incorrectly causing them to be in the path of the piston skirt, or
2) fitted the N1 pistons back to front with the relief facing the opposite way
!#$@$#$@#%$#@%#^
I would love to hear what your engine builder has to say. I am very disappointed as I was the one who reffered you there. I know people make mistakes and so have I but always fronted up and copped the bill. Good luck
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