[westrock]

Found some local sellers of used engines that have these in stock and wondering if there is a visible way to verify the block is an MR20 and not a MR18.

 

[randy]

Did they say what kinda car they came from?

 

[westrock]

Yes, I looked up 2009 Nissan Sentra 2.0L. But since it looks identical to an MR18, I want to make sure that either accidently or purposefully I'm not being sold an MR18 instead.

 

[jbeau]

it looks identical period end of story. That is the only reason it works. If they say its from a sentra im sure it is. Im sure there is a stamp just no idea where. The only difference is internal to the block

 

[westrock]

I saw this, but it looks to be on the bell housing, which shouldn't be attached to the engine.

There has to be something, otherwise how would Nissan differentiate between engines sitting in a warehouse. Usually the service manuals will tell you how to distinguish between engines in a particular car model, but I didn't see anything in the PDF's available online.

 

[randy]

well the mr18 and mr20 are pretty much the same engine. just a few different parts here and there inside and out. its really hard to tell the 2 apart. wouldn't there be a serial number on the engine block itself somewhere? may try to use that. i know on my SE-R qr engine it say qr on the side of it.lol

 

[BluV3R18]

the MR20 and the MR18 were very similar

MR20

MR18

 

[westrock]

Oh well there you go, the oil caps are rotate differently, lol

 

[westrock]

 

[JoshG]

Looks nice man, keep us posted.

 

[robj80]

awesome picture!! Now that is some useful info right there.

 

[RedAlertV]

Wait, isn't that on one of the belts just like the first one you showed but said MR18? Not trying to confuse you or anything lol.

 

[robj80]

that is etched on the block where the transmission mates up.

 

[RedAlertV]

ohh, sorry lol.