Gen 2 Motor Reliability vs Gen 1?
 

I was pretty set on getting a Gen 2 MS3 vs a G37, then last night I came across a thread of people bending their rods or shooting them out of their blocks. It seemed like mostly Gen 1 peeps, a lot of low mileage people reported too.

I came across these threads to somewhat ease my mind.

http://www.mazdaspeedforums.org/foru...on-rod-110109/

http://www.mazdaspeedforums.org/foru...ng-rods-33010/

My plan for this car is a DD, powerwise will be around 320ish whp with supporting mods. My question, any of the Gen2 peeps having premature blown motors due to the rods or any other reasons? stayed away from the new wrx's due to their premature ringland failure issues, was hoping the gen2 MS3 would last a lot longer if taken care of.

I plan to get one around 50k mileage, and hoping it will last over 120k.

Currently driving a s13 Sr20det GT2871r 0.64 AR 18psi :) but its is definitely a annoying dd

Gen 2s pop too. There's fewer gen 2s popping statistically speaking because the Gen 1s are years older, not because there were redesigns that made things better. Just have to keep up on maintenance and learn how to drive the car. Get the right mods and get a good tune. Run good gas. Run good oil. Don't floor it in 6th gear.

All high power small displacement turbo cars have their afflictions, beit a WRX/STi or Evo.

G37s are fucking boring.

All of them.


Also, many a blown motor can be attributed to aggressive yet crappy stock ecu tune along with people loading up the motor i.e high gear, low rpm, high throttle i.e i.e i.e 6th gear at 2k rpm and flooring it because lazy

thank you gais for the info, my engine mods won't be more than the bolt-ons, HPFP, Cobb AP/dyno tune, oil will probably be rotella, same stuff my SR runs,

yes a MS3 does def win in the fun department. boost is fun, boost is life.

Genpu's didn't have as many zoom zoom booms because by the time the genpu's rolled out...the Genwons laid out all the ground work so that people didn't go BOOM.

Genwon FTW! :bigok:

i hope so!, i've just been reading through this forum, trying to reassure myself that it'll be okay.:baby:

Mzr is a pretty solid engine. All engines have failures, don't let it scare you away.

I seem to rememeber reading somewhere that the Gen2 pistons were redesigned to help combat cylinder wall wetting. Also, I believe the Gen2 stock tune was changed to help with the low speed pre-ignition problems that were causing people to blow up while just cruising.

I mean to be honest, there have been completely stock engines that have blown. It's rare, but its happened. So the best you can do is just mod properly, maintain properly and keep a good eye on things and there is no reason your engine can't last you the 120K+...barring nothing completely unlucky happens.

so what I'm saying...don't 6th gear WOT log with a DP and no internals. 320HP huh?..If you're planning for that I hope you have corn and/or meth available if you're staying on that stock k04 because without either 320 may be a bit lofty..you may already know that but always worth mentioning to help you plan your mod path and search.

Both true, the pcm reprogram dropped power from 273 to 263.

Just buy the car. You will never find this value <-> fun ratio with another car, and you get to be a member of an awesome community in the process.

Like @WAMBUSHHHH!; said, probably gonna need WMI or E to hit those goals.

My Genpu went boom, bent rod, but I would definitely buy one again.

My issue was the stock tune with some flow mods (maybe the start of tuning) but you can easily end up with monster torque down low. I ended up part throttle bent rod. I'm blaming the low throttle fuel economy timing advance the Mazda does, but like ^^^ said, if I had learned to drive first, I probably would have avoided it

No issues here on Gen I

I owned a G37 before this car, never had any motor issues. They run that motor in a lot of their vehicles just turned in different ways. I haven't had the Mazda long enough to give an opinion on it (motor wise).

Back in the day the issues was fuel pump internals primarily, then it got better but other things involving bad tunes and just bad decisions.

Most that blow now a days is just people being stupid or cars that are just getting worn out. Yes there are the few random ones that happen that were well maintained and even stock, but with how these engines are its not surprising.

Honestly im not too worried about it even with my car. I dont have any crazy mods at all and I don't beat the shit out of my car. If anything is gonna kill the engine it will be it getting old and something wearing out at the wrong time.

Mine's just ticked over 100k,
http://i536.photobucket.com/albums/f...s/IMG_1717.jpg

had the car since new and I started tuning 4 years ago pretty much as soon as i bought the car.
I'd echo what others have said about good oil etc.. but also add to drive it sympathetically until upto temperature.
I've just changed my suspension top mounts today, but that's expected for my mileage.

My ms6 has over 211k on the original engine and clutch. I drive the Shit out of the car, but do it smartly. As others have mentioned, no low rpm flooring it and maintenance is key. I change the oil every 3k and take care of it. I am also running big turbo and a few mods, but getting a tune and maintenance I believe is the reason why.

It seems one of the keys (apart from the obvious maintenance, which is the same for pretty much any car you would like to lasts long) is oil control and the tune

That low RPM/high load stock tune issue and knock can be devastating!

Glad to see some high mileage examples!

Stock clutch too!?!
I guess you've never made a carrier deck launch.

No, I have launched it many times, I even go to the drag strip 2 or 3 times a year.

^^ Do you launch by dropping the clutch and holding on for dear life or by slipping the clutch the being smooth??

I am surprised the diff mount held up to the abuse if not stock :speechless:

I do not dump the clutch. I slip the clutch so it is not so hard on the clutch, I have dumped the clutch, but when I first got the car. Learned my lesson as it was not as fast.

Was gonna say HEY i know a guy with a 200k+ speed 6 then i realized it was you.