B-210 engine block rebuild or refurbish?

[spottedog]

This engine is in my 1974 B-210 hatchback, it was blowing smoke only while accelerating, and using oil.

Not a “huge” quantity of smoke, but enough for a Highway Patrol cop to pull me over and advise me to “fix it or junk it”

Compression test was pretty good at 175psi to 190psi.

 

I first noticed the smoke after having a valve job done this probably increased the compression and the load on the old rings.

I got the car with a A14 engine in it, it has been rebuilt once since the cylinders are 0.50mm oversize and the pistons are “JCC” brand that was made in China.

 

Cylinders 3 and 4 have pretty thick carbon deposits on the crowns and the #3 and #4 plugs were a bit carboned up and running dark.

The cylinders look good and have no ridge at all, the pistons look OK except the three piece oil rings have no outward tension against the cylinder walls.

I can take a piston with the top two rings removed (the oil control rings still on) and just lower it into a cylinder with no force.

 

The upper and lower rails of the oil rings seem to have no outward tension and sit even with the top of the rings lands (see oic’s) and several ring gaps were lined up rather than being clocked correctly.

 

I looked up the “JCC” brand of pistons on the web and it seems the pistons are OK but one post said to “throw away the rings that come with the pistons and use good (non Chinese ?) iron rings instead”

Money is TIGHT so I am hoping that having the block tanked and cylinders honed then put new decent rings in and new rod and main bearings and close it back up?

I only want to do this ONCE and stop the smoking.

 

There are four oic’s, one shows a piece of non ferrous metal that was in the pan, about ¾” long, I have no idea what it is. (Crank and rod and mains are standard and look great)

 

Your opinions please, I miss my little car! :(

 

http://www.ephotobay.com/image/cimg0134.jpg

 

http://www.ephotobay.com/image/cimg0141-1.jpg

 

http://www.ephotobay.com/image/cimg0130.jpg

 

http://www.ephotobay.com/image/cimg0143.jpg

[datzenmike]

First, the oil control rings should NEVER, NEVER, NEVER be installed with the ring gap ends in this position! They should be 180 degrees apart to prevent oil getting past them to the compression rings. The top two compression ring gaps should not line up either. If they are, compression will leak past.

 

 

 

 

 

Nissan blocks are pretty good for wear. You likely can just hone up the cylinders to roughen them up and install new proper size rings. Before assembly, place the rings into the cylinders they will be in and push down with a piston top about 2" and measure the ring end gap. Be sure it is within spec... tops usually have more gap because they run hotter.

 

While the head is off have the valve guide seals replaced just in case the rebuild did not include this or it wasn't done right. Bad seals will increase oil consumption. they are cheap and easy to change yourself.

 

 

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[b210in]

rebuild your shit already. there's a ton of good quality parts for a14's right on flea bay. the engine is really simple to dismantle and put together. get on it already.

[spottedog]

rebuild your shit already. there's a ton of good quality parts for a14's right on flea bay. the engine is really simple to dismantle and put together. get on it already.

I searched fleabay already.

 

NO 0.040 pistons there already. :blink: