Hi Iím new to the Forum. Wondering if anyone can help me out, maybe someone has gone through my issues before, I swapped a motor on my 04 Mazda 3 2.3L. With a JDM mazda 6 motor 2.3L. Engine starts fine, but the car doesnít move Iím using the same mazda6 torque converter & flex plate the trans is from a Mazda3. Iím stumped here. The mazda 3 torque converter & flex plate doesnít fit. (I tried) numerous times. Needs some help Thanx 😁
Fredster, a good way to confirm that the fitment is off is when you matted the trans to the engine, you shouldn't be able to fully mate the two until the torque converter bolts are aligned into the flexplate holes. The flex plate shoudl be firmly pressing against the torque converter, but not interfearing with mating the trans to engine.
Since you already have it together and I imagine the trans oil pump is not engaged, you can pull the started to access the TC nuts, remove all 4 nuts. Wedge some dense foam or tapered sticks in between the TC and Flexplate to apply light pressue (you'll need to have the pressue balanced), then spin the crankshaft with a 21mm socket on the front crank bolt. once the TC lines up with the trans fluid pump, it will slide into place making a gap between the TC and flexplace.
Short story is, pull the trans and swap the flex plate and TC back to the 2004 original.
I just had to do that with mine last night. I knew I had to use the 2004 flexplate, but inadvertantly got the two mixed up and grabbed the wrong one. I can't tell you how hard I was kicking my own ass last night. 5 hours waisted becuase I didn't take the 5 minutes to validate I grabbed the wright flexplate.
When installing the TC to the trans, support the center nipple on the TC and slowly spin it. It will line up with the splins for the trans input shaft pretty quick and easy. Then you need to keep doing this until it slides in about another inch. You'll feal it pop into place when it lines up with the pump. You don't need to push hard, just light pressure toward the trans. I did this and then while installing the trans, the TC popped out slightly and got miss aligned with the pump. I knew this when there was pressure the last half inch of trying to get the trans bolted to the engine. I had to tighten the mating bolts just enough to apply pressure to the TC and flexplate then spun the engine over with a socket on the front. After spining it nearly a full revolution, it popped into place, again. Then I could tighten the mating bolts all the way and the engine would still spin freely. If you bolt the engine and trans together without the TC being aligned with the pump, the flexplate will bind and it will be very hard to turn the crankshaft with a socket and driver.
I hope this is helpful to you.