Long time lurker decides to be useful and contribute to the online society. I currently have a 2010 Mazdaspeed3 with 99k miles. Canadian winter has taken its toll on the body but its a mechanically sound, fun to drive, Subaru smashing machine. Basic bolt on upgrades, tuned by Stratified, some wheels, nothing extraordinary. The plan was to eventually pull the engine, build it, reinstall, BT, and then acquire all the horsepowers. But then... Abandoned MS6 Alert!! Look at the weeds!! Tracked down the owner of this 2007 MS6 wondering why its been sitting for 5+ years. Maybe its for sale? I need to know more. Owner is an old high school friend. Who knew. Long story short. Cement barrier fell off a flat deck. Took the subframe and a chunk of the unibody with it. Write off. They bought it back to fix and well... never happened. Same mileage as my MS3. Well what does he want for it. $800. Eight Hundred Dollars. So I called a tow truck that day and laughed hysterically at my essentially free MS6. A week later, up on the lift for engine extraction. Having friends that own a shop is ideal. The engine is out and on a stand in my parents garage. (I went and got a house without a garage how stupid). Having only the knowledge of rebuilding a Chevy small block, I decide this engine will be built by me. Slowly. But correctly. And maybe even for more power than originally anticipated. I'm super thankful MSO is here for the info, I've been absent for quite some time and was disappointed MSF was no more but the knowledge here will grow and will be better. So yeah. Here goes.
Looks great, nice work. If you need some advice on engine building I did it all from scratch as well and documented it. https://www.mazdaspeeds.org/index.php?threads/johnnytightlips-build-maximum-carnage.7025/
Thanks guys. Will be pretty slow moving but documenting the journey seems appropriate. @JohnnyTightlips thanks for link. I've already been reading up on your thread actually. So far lots of great information especially the wooden spoon and a metal plate.
Have the entire engine down to nothing with the exception of the heads. Those will be disassembled after the weekend once I can borrow some tools. Mechanic friends are the best especially when they have tools you need and you manage a restaurant they like to eat at. I was pleasantly surprised to see the balance shaft was already deleted. Saves me some money and helped made my decision. Next step is off to the machine shop for a good clean and resurfacing. For an engine with no previous failure or damage, is it worth going up in bore size the super tiny amount?
If you need to step up to 88 it is not a big deal unless your goals are 650+ whp Ideally staying at 87.5 is best but you can make a lot of jam safely on 88.
Relatively low mileage engine that was treated nicely so a nice clean on factory bore is the way to go. Was very fortunate to see hpfp internals, rmm and a catch can. Are Corksport cams worth the money? My oem cams are in amazing shape and ill be doing valve work regardless. The short term goal is 400whp and see if that makes me happy.
If you have the motor apart it would be worth tapping the balance shaft oil supply hole and screwing a plug in
