Isn't that where a starter would go? Not for the Prius of course, but they use this motor in other vehicles. Should be a standard bolt you could get at a hardware store?
I replaced mine at Home Depot. Those are for the "starter" but if there was a starter the bolts would be longer. There are only 2 sizes of trans bolts, some short bolts and some long ones. If you have one of each, go to home depot and find some that are close.
Regarding thread compatiblity, I always like to find a (metric) nut that's compatible with the OEM bolt, spins on easily, then make sure that nut spins onto prospective purchase bolts. I have been bitten in the past, maybe it's more-or-less sorted now?
Started reading in the Repair Manual, was curious of those transaxle to engine bolt torques: Attached pdf has more info.
Update on egr cooler: The oven cleaner is working better than the purple power degreaser from Walmart. My transmission drain and fill bolts are rusted since this car was in flood ( Just the engine bay). Should i heat it then try to take it off?
That is just sparying on one side. Leave it for 1-2 min then flip and spray the other side. When i flip it the carbon build up you see comes out the other end. Then i rinse it with hot water which brings up all the loose carbon gunk. Then repeat. I will do one more time with oven cleaner which was left in it from last night. Then pressure wash it. I wish it was summer.
A rubber stopper is a big help, if you can score one. When I did ours I cobbled one, turned a dowel down into a cone shape, and wrapped it with a couple of nitrile gloves, tapped it in. But a proper sized stopper is much better. I've prepped, got some from China for next time. What I have has a number 4, a large diameter of 26 mm, and small diameter of 19 mm. That fits the smaller of the two ends IIRC. Addendum: Some info on the cooler opening diameters: Intake opening diameter (at exhaust): 20.9 mm exit opening diameter (at EGR valve): 25.7 mm
A stopper could help. You could fill it with Gunk and let it soak. That will break down the carbon or at least soften it up. It's cold here too, 63 degrees and it's supposed to get to 49 tonight!! FREEZING! I saw some stoppers somewhere but because I had no use for them at the time, I can't remember where. Maybe it was Harbor Freight? I'll have to make a note for the next time. I think I'll soak my spare cooler with gunk for a day and then try my pressure washer. When it warms up that is! I'm curious to see how it does!
You said yours was completely clogged so it will take a lot of work to get it clean. Once it's clean, the next time should be easier. As long as you clean it with less miles so it doesn't get so clogged up.
Yeah it's a balancing act, maybe every 80K miles? Something like that. It's not a fun task, so you don't want to overdo it. OTOH: leave it too long you have a tougher chore on your hands, AND driving with a partially clogged EGR maybe has some negative impact on the engine, running hot?
Ya its taking forever to clean it but it will be worth it in long run. I will get gunk once i run out of oven cleaner. I saw puddle of carbon this morning and filled it back again with more oven cleaner.
Thank god you posted the "after" picture, or I'd be sliding out of chair. I'm guessing you were using a wrench with a shortish arm. If so get something around 18". And maybe a mondo 24" breaker bar for really tough ones. Don't tell me you were using a L-shaped hex wrench? For sure get some hex sockets. Stanley makes a set, for around $10~15.