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Discuss topics related to the CA18DE and CA18DET series engines.
pachano00
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Joined: Mon Nov 12, 2012 8:35 pm
Car: Nissan bluebird u11 SSS-S CA18det

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hello friends am from peru nico club
I have a CA18DET engine from a front wheel drive Nissan Bluebird
I'm told that the crankshaft cuffs are worn and if they are going to rectify it to 0.30 but it says that as metals turbo will not hold please tell me want to see that their opinions do club friends thanks nico .


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Hijacker
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Moved the CA forums.

blownhemi
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Joined: Tue May 19, 2009 3:39 am
Car: S13 200SX CA18DET HX35
Location: Hungary, Eu.

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pachano00 wrote:hello friends am from peru nico club
I have a CA18DET engine from a front wheel drive Nissan Bluebird
I'm told that the crankshaft cuffs are worn and if they are going to rectify it to 0.30 but it says that as metals turbo will not hold please tell me want to see that their opinions do club friends thanks nico .
0.30 is not a valid undersize for crank journals, so you won't find any bearing shells for it. The only valid factory undersize is 0.25. If you can't get your oil clearance inside tolerance by grinding it down to -0.25, I'd look for a crank in a better shape.

Or try your luck by going down to 0.50 .
Last edited by blownhemi on Wed Nov 28, 2012 12:38 am, edited 2 times in total.

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float_6969
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What he said is accurate. What is usually done, is the bearings are purchased first, then installed in the block and rods. Then the ID is measured. To that measurement you add the clearance you want. This gives you the diameters the journals should be ground down to.

blownhemi
Posts: 296
Joined: Tue May 19, 2009 3:39 am
Car: S13 200SX CA18DET HX35
Location: Hungary, Eu.

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pachano00 wrote:What would happen if I give him 0.30
I don't think two separate threads are needed for the same discussion, so I'll just continue here.

As we mentioned already, there are no +0.30 oversize bearing shells for the CA. There are +0.25, +0.50, +0.75s. So it will be VERY hard to find someone who has tried 0.30. What you should ask is:

What would happen, if the crank is at 0.50? How many have tried it, and how many miles on it so far?

I know you are looking for a YES, and if you look hard enough, somewhere you will find that ONE 'yes' you need. But still, if you want to do it RIGHT, you should get a +0 crankshaft, or +0.25 maximum.


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