MX-3.com

This is my worklog for my newest build-up on my 94 Mazda Mx-3. I've allready swapped in a Bp-t engine from a 323 GTX a couple of yrs back. The stock GTX engine was a good engine and ran strong untill I melted a hole in the #3 cyl on June 3rd, earlier this yr at Road Atlanta. After carefull thought, I've decided to spend a few dollars, insuring that holes in pistons won't be another problem. I consider tunning a big part of the buildup, so that will be another issue to address once the car is up and running.


I've taken several pics a few weeks ago and now here they are in my work log. The cyl head work is done. I've spent several hrs porting and polishing the exhaust runners and combustion chamber. I finished the exhaust side first and started the intake with pics. For now, I'm not showing the finished intake ports. It's a secret...The block and cyl. head went to the local machine shop.

Machine work:
bore block
micropolish crank
balance rotating assembly
clean block
set ring end gap
deck block

Cyl. head work:
re-cut valve seats
re-surface head
clean/rebuild lifters
assemble valvetrain (valves, springs, seats, retainers and keepers)

Right now I have:
JE pistons 1mm oversize, JE rings
Carillo con rods
clevite standard bearings
ARP head studs
Gates racing (blue) T. belt
Supertech dual valve springs and
titanium retainers
aftermarket valves

Ported and polished cyl. head.














Pictures of the bottom end after having machine work done. A fresh coat of paint was applied after the block was cleaned.





The crankshaft along with the other bottom end parts were fully balanced.



The polished cranshaft.





The pistons and rods assembled.





Side by side comparison of a heavier/weaker BP rod and Carrillo rod.







So many parts to get put on the car...



That's all for now. I should have my cyl. head back from the machine shop shortly. Some of the exhaust valve guides needed to be replaced which is the reason for the work to take awhile.

get the crank knife edged cant wait to ride in this one. AND IF THIS ONE GOES (prays not) fe3 time ????

LOL. I'm praying to. I've assembled the bottom end so knife edging is out of the question. I do have more pics that will go up after the head is back.

Is that a new clutch I spy? Do you still have the old clutch kit or did you buy new? if so you know what im thinking.

Just the disk bro. I didn't get a new pressure plate.

Man I sure hope this aint what it looks like.. or maybe it wont matter for some reason.. but this sure looks like a crack to me...



Tunes67

^^^Your not the only one thinking that Tunes!

Check these out dog B6T on the right

Tunes67 wrote:Man I sure hope this aint what it looks like.. or maybe it wont matter for some reason.. but this sure looks like a crack to me...


Tunes67

Yeah, I saw that too. I think it's part of the intake though, but I'd be concerned about vibrations causing metal bits to break off and go into the cylinders.

Nothing to worry about guys. That's the casting line of the cyl. head. I tried to remove as much as possible to make it all blend together where it splits the 2 valves.