Total Engine Teardown! Mazda 2.3L TURBO MZR. Mazdaspeed 3 6 CX-7, Another One!

In this video I tear apart a 2.3L Turbo Mazda MZR Engine, found in mazdaspeed 3, mazdaspeed 6 and Cx-7. This is a Fomoco-mazda joint effort designed engine and I believe many of the faults lie in from that conglomeration. This was probably the best MZR I've torn down condition wise, in the last year or two. Lots of great parts to sell!

Thanks for watching and if there are any engines you'd like to see torn down, feel free to leave a comment about it.

Catch ya on the next one!
-Eric

[fitfogey]

July 4th weekend Saturday night teardown. Here we go. Our boy always looks out for us.

[jeffhyde]

Cool video! It's weird, I work on cars all day at work, then come home and relax watching other people take stuff apart. Lol. One thing I did notice is, how you still, even if it's junk, you still loosen the head bolts in sequence. That's pretty cool, like muscle memory takes over. Keep up the good work!!! And thanks for doing the videos.

[COYOTE_N]

Honestly all in all it's not a bad motor. 150k on my 08 and it's going strong. MAINTENANCE MAINTENANCE MAINTENANCE. that's all I can say

[DellCarter-rt]

You are an asset to YouTube
I've viewed many and people could learn from presentation. Clear, informative, good pace, additional information and what to look for, cause and affect, thorough. And not monotoned. Thank you

[JohnIsett]

You're very entertaining, Eric. Don't let your imminent success go to your head and ruin your humility. Best wishes.

[boosted]

Your videos are one of my favorite to watch. Every time you have a tear down of any engine it's the first I click on. If you could do 3 or more a day I would watch every second of all of them. I know im not alone on that statement. It could be 5 LS engines a day I would watch every one of them. There are other content creators doing same thing on YT but for whatever reason they are not you doing them. I enjoy yours a lot more. Keep em coming

[BIGBLUEk]

I have this same engine setup in my cx-7 almost 300, 000km no issues yet. Their not bad if you maintain them

[ldnwholesale]

I suspect whoever bough that engine decided to change the balancer and lost cam timing. Those 2 tiny knicks in the piston is where they met.
A stupid idea of not using keys as manufacturers have done so for well over a hundred years.

[paulstan]

Yea!! Trying to find something to watch on tv nothing good. Glad you posted A video. 😁👍

[gregbarnett]

Great video! I own a CX-7 with this engine. Had 94K when I got it as a one owner, now has 154K and is still going strong. Hopefully it will for a while longer.

[sundance]

Enjoy seeing different engines internals and finding damage, I've learned alot. Keep them coming.

[Gmacrone]

That was the best looking parts engine I've seen you take apart.

[brendanmyrick]

Got a mazdaspeed 3 with 211, 000 miles on it so far without a rebuild, so id say thatd a win for a turbo'ed 4 cylinder

[Dis-Emboweled]

In case anyone was wondering, the W on your oil does not stand for water 😂😂😂😂

[richieb]

Owned a speed 3 for a number of years. I had a tuner and ran like 21 lbs of boost and had a turbo inlet and mazdaspeed intake. The thing was a ton of fun to drive. I beat that thing up for 80k miles and the only thing that went wrong was the starter cable came loose and had to be fixed at the dealer. There was also something that had to be done under warranty for the transmission. I even got a new clutch out of it. Ran 13.9 at the strip and got it to 150 once. Lol maybe I was one of the lucky ones?

[senior_ranger]

The best Saturday night bedtime stories!! Thanks.

[Robert-ffwf]

I bought a brand new Mazda cx7 back in the day and loved it!! Didn't get a year out of it before the turbo blew. After some research I found out these motors were garbage and got rid of it before it blew again!!

[fredzeppelin]

Although I've never had a turbo MZ 2.3L, I owned 3 different 1st gen Mazda 3's with the naturally aspirated 2.3L/manual trans, and each went well over 200K miles with routine maintenence. A thermostat here, an alternator there, etc. I was an owner/operator bank courier, going about 65K miles a year. I changed oil at 5K intervals.

[Johnc]

Hurray, it’s tear down day. The best 4th gift for an old man. Thanks. Be safe. Peace

[clifbradley]

Eric, you should do a post edit and explain what killed it, then put on a pair of sunglasses like Horatio Cane in CSI: Miami. Like for the Escalade engine "A lack of oil and maintenance caused this engine to put a rod through the block. That's when knocking" then a quick blurb of the theme song. I don't know. Sounds goofy but watching these and figuring out where things went off the rails or killed the engine is the best part of guessing. The OG's will light up the comment section within minutes of the video coming out saying what our predictions were. That's the fun.