Rb20 crankshaft timing gear quesion

Discuss the RB20, RB25 and RB26 series engines.
Senad F
Posts: 21
Joined: Mon Feb 21, 2011 12:19 pm
Car: s13 240sx
2012 mazdaspeed 3

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Hey guys long story short my crankshaft timing gear is in backwards the timing notch is facing towards the crank I got the timing all set and don't really need that mark I'm just wondering is that ok to keep it that way?


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Carl H
Posts: 5985
Joined: Mon Aug 04, 2003 4:09 am
Car: 1995 Nissan 240SX SE RB30DET

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in theory it should be fine...but best to reassemble as you found it, prevents confusion and also the gear has probably been worn in a bit and it may not drive properly.

Senad F
Posts: 21
Joined: Mon Feb 21, 2011 12:19 pm
Car: s13 240sx
2012 mazdaspeed 3

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i would but now i cant get it off without doing damage and i really dont wanna do that, the shop that did the rebuild had to break it in half to get it off so i got a new used one i guess ill know when i start it up

240z4u
Posts: 2071
Joined: Mon Feb 21, 2005 4:47 am
Car: '95 Nissan 240SX

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Is the gear symmetrical? I haven't seen one in years. If it is and it's not offset goofy I think it will be just fine.

Senad F
Posts: 21
Joined: Mon Feb 21, 2011 12:19 pm
Car: s13 240sx
2012 mazdaspeed 3

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Yea it's symmetrical i think it will be fine I read through the service manual and it doesn't say anything about it going on only one way

240z4u
Posts: 2071
Joined: Mon Feb 21, 2005 4:47 am
Car: '95 Nissan 240SX

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Senad F wrote:Yea it's symmetrical i think it will be fine I read through the service manual and it doesn't say anything about it going on only one way
That's because anyone paying attention would have put the timing mark out. Regardless I wouldn't tear it back apart for that.

Senad F
Posts: 21
Joined: Mon Feb 21, 2011 12:19 pm
Car: s13 240sx
2012 mazdaspeed 3

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To other people that make the same mistake no it doesnt matter which way it goes on, my car started up and is running great after the build even with the gear turned around the wrong way

danielmcn
Posts: 321
Joined: Thu Dec 29, 2005 6:21 am

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I dont know if I would trust a shop that doesn't know what side of the came gear should face out..... Just saying...

Senad F
Posts: 21
Joined: Mon Feb 21, 2011 12:19 pm
Car: s13 240sx
2012 mazdaspeed 3

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danielmcn wrote:I dont know if I would trust a shop that doesn't know what side of the came gear should face out..... Just saying...

mistakes happen, its been 2 months now and the motor takes a pretty good beating every weekend and no problems yet


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