Stuffed a motor, what options do we have
 

Hi Guys

Hope you can help my old man out and give me some good news, he has a CX7 and 4 months since his last service he was going down the highway and noticed a CEL... long story shot turns out his motor had no oil in at at all.

He took it to the dealer and they have told him (more or less quoting) that "there was a lot of oil in the induction system / intake caused by blow by as they took the oil cap off and heard/smelt fumes or something, compression test showed 1 and 4 were around 150/160, 2 and 3 were 120-something and 108! Suspect ring and/or pistons are damaged"

They have pretty much told him it is not worth fixing as he will be looking at a $10k repair bill for a replacement engine, car is 3 years out of warranty but has always been serviced at a Mazda dealer at the correct times.

They did tell my dad that you can not rebuild the engine because you can not bore/hone the aluminum block etc and it was a "throw away"

Car currently runs OK-ish now it has oil in it, I just want to know what the best option $$$ wise is, should he drive it to it blows up and sell for parts, swap the engine (used or built block?), build the current engine etc etc (Not sure there is any place around that has built a Mazda DISI engine tho)

Any advice would be greatly appreciated

Help me MSF wan kenobi your my only hope :)

Obv the dealer was bullshitting you. The block is aluminum andd the cylinder wallsvare made of something else I believe atm I am getting mine bored out for bigger pistons and if you join nator in your area maybe they will help you rebuild it.

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Motor is not a throw away. He can pull it and have it machined. They make .020 over pistons for the motor. A lot of us have gone this route. Get it built and take care of it properly (not at the dealer).

Lol just pretty much reworded what I said lol

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Yeah I knew the dealer was full of it when he said it could not be rebuilt
My old man isn't power hungry so just really seeing if he us better of moving on or rebuild etc

Sorry, I couldn't make out what you were trying to say with all those illegible words.

All in the condition of the vehicle. If the rest of it is in great shape, you can get away with about 3g's of nice rebuild and run for a long time. If the thing is trashed, then walk away.

Would that be $3k parts or parts and labour? I would think getting someone to pull and reinstall an engine would get costly

Parts and machine shop work on the engine. Do the swapping yourself. Of course, choice of parts will either raise or lower the parts.

Thanks @jmhinkle;

Would have to buy cranes etc to DIY, given the extra cost of tools etc would it be better just getting a shop to do the swap>

Harbor freight hoist and engine stand is cheap. Look for one on CL to save money or sell it on CL when done to recoup some money. If you don't have the tools, well I can't help you. I couldn't make it a day without the amount of tools I have.

Too use the mention it is @ thename ;

Cletus, where exactly do you live?

All the major hand/power tools I have etc, just anything that is special to putting a motor together I don't have, will to buy them tho as tools always come in handy


I'm in Australia, so no real NATOR type group down here that I know of unfortunately

Oh shit, lol. Didn't notice that part. There are a bunch of Aussie guys floating around here though. They might have a Nator section. The only special tools you need are a torque wrench, piston ring compressor and a torque to angle gauge. Except for a good torque wrench, the other ones shouldn't be very expensive at all.

Here ya go, Nator OZ even though it doesn't seem to be active. lol

Mighty Car Mod guys?

Moog!