Toyota MR2 AW11
Quite interesting. Some Toyota gaskets seem to have sealant on them. Noticed this when tried to clean the gasket and some of it cleaned right off. I thought it would be better to get new ones.
The sealant, whatever it is, is dull gray and if wiped off, underneath it there is shiny black metallic surface.
Now I understand why some of the gaskets are non-reusable. Anyone know if the sealant is heat activated?
This is where we start. One oil pump with small gearset, a.k.a. late model oil pump. Stock gears are marked with dots, I dont know why.
Remove stock gears and wash everything with care.
Insert Toda gears.
Lubricate freely. I used Red Line installation goop.
After this I checked the gear cover still fits and added a drop of Permatex thread locker into screw threads. The thread locker I used is good up to +150C.
Torque to 10Nm. All done 🙂
Checking pistons and rings:
Gap on fourth cylinder is 0.35mm.
Pistons seem to fit into block. That is a good thing.
A package from Manon Racing Products arrived, containing Toda timing belt and oil pump gears, N2 style additional timing belt tensioner (or guide) and a crank girdle.
Timing belt tensioner. Fitment is very good.
And the crank girdle. A serious piece of hardware. I needed only some stiffening but now the engine will be bombproof.
Veeery nice 🙂
Seems that I have reached the point where there is nothing to take apart anymore!
One of the pistons (the one that had a ultrasonic bath) taken apart and measured – maybe bit too HDR-ish photo 😀
The new oil pump, this one with 74mm gears. I found some info about how the new dry pump should be primed with grease or assembly lube, but I think that is for later.
Finally, I’ve at least primed the engine block! Got all of the paint stripped, the block cleaned and greaseless and then painted with 2-component epoxy primer (which is actually fine for only coat, but maybe light silver top coat…?)
Cleaned
Important bits taped off
Painted
One genuine late model oil pump with seals! gaskets!
One of the weird things I’ve found: There are two different oil pumps.
Early models have 78mm diameter pump gear with a crescent shaped piece in the middle. Later models are using 74mm pump gears. Obiviously, AW11 has the early model, which is not compatible with the stronger Toda gearset.
I’m definetly going to run this new engine to the max, all the way to 12000 rpm so mod is much needed. 😀
Here is the original pump, with the crescent shaped piece between gears:
Finally found out what was the thread for this plug. It’s 5/8″ UNF – nice to know altough I cant use it 🙂