OOkaay.. dilemma time.

"Zipppy, Mazdurp builder, Probeski owner and former ricerboy" (zipppyart) 02/28/2016 at 22:35 • Filed to: Project touring civic, PTC

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Finally got around to pulling the head off the B20.

From my initial inspection.. LOTS of carbon, and oil fouled plugs. Cylinder walls are VERY glazed, all expected from a high mileage engine that was likely abused later on in its life. No signs of valves and cyls mating, so that’s good.

I have the option to buy a low mileage running engine for $300 I can use to make my B20VTEC a reality. However, would it offset the cost of rebuilding this one?

Head is worth nothing to me because I already have a much better replacement.

So, I ask this, would it be worth salvaging this free block, or is it a better idea to buy a newer one?

Ill leave this images here.

His Stigness > Zipppy, Mazdurp builder, Probeski owner and former ricerboy 02/28/2016 at 22:43

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I'm not sure what this engine is out of, but 300 for a running engine is going to be a hell of a lot cheaper than rebuilding the engine you have. A valve job at a good machine shop should cost a few hundred, and then got rebuild the block, which will probably cost more than the engine.

Zipppy, Mazdurp builder, Probeski owner and former ricerboy > His Stigness 02/28/2016 at 22:47

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its orignally from a first gen CRV, going into a civic of the same vintage. I already have a near-new head that’s had this service done already. valvetrain is quiet.

His Stigness > Zipppy, Mazdurp builder, Probeski owner and former ricerboy 02/28/2016 at 22:50

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Then I would buy the other engine and rebuild that block and put your near new head on that engine. It may cost a little more, but you'll basically have a new engine.

iSureWilll > Zipppy, Mazdurp builder, Probeski owner and former ricerboy 02/28/2016 at 23:49

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Rebuilding the bottom end will be expensive. Mostly in labor. I guess it depends on your goal for the car. If you’ll be driving it for 10+ year then a rebuild would be optimal. If you’re planning on keeping it 2 years then I would buy the $300 engine.

Another option is to put the $300 engine in now and hold onto your current one that you can build over time.

Zipppy, Mazdurp builder, Probeski owner and former ricerboy > iSureWilll 02/28/2016 at 23:56

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this will be in my daily driver. fresher the engine the better.

BiTurbo228 - Dr Frankenstein of Spitfires > Zipppy, Mazdurp builder, Probeski owner and former ricerboy 02/29/2016 at 04:30

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Hmmm, depends. If you’re looking at it financially then probably get the other engine (although who knows if that’s in better condition).

If you’re just in it for enjoyment, definitely rebuild this one. I’ve rebuilt an engine and it’s a nice experience. Feel good about having done it myself too (apart from the machine work).

Gives you the opportunity to get the crank balanced too (although you get what you pay for with that).

uofime-2 > Zipppy, Mazdurp builder, Probeski owner and former ricerboy 02/29/2016 at 12:00

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Near new motor is factory built?

Does it pass a compression/leak down test?

If both answers are yes, then use that motor.

Zipppy, Mazdurp builder, Probeski owner and former ricerboy > uofime-2 02/29/2016 at 19:33

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yes and yes.

Zipppy, Mazdurp builder, Probeski owner and former ricerboy > BiTurbo228 - Dr Frankenstein of Spitfires 02/29/2016 at 19:40

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A bit of both i’d say. I have to build the engine up either way, as the stock rod bolts cannot handle the higher RPM desired. Lightening and balacing everything would also be worth it in the end.