Imported engine swap 5S-FE Options

[gts4]

Found out my water pump and head gasket are bad. I was quoted less to buy an engine than to take my chances on the repairs, $700 + $300 labour. I'm going to replace the engine with an imported one at (hopefully) around 70k. Any tips on ensuring the longevity of this one? I put on 50k per year.

Thanks!










This post has been edited by gts4: Jun 26, 2012 - 4:06 PM

[Galcobar]

On the valve cover, Toyota calls for use of form-in-place gasket at specific points. There is no call for sealant on the thermostat, and if there's one system where I'd be worried about tiny little bits of vulanzied rubber breaking off and getting stuck somewhere, it's the cooling system. Of course, you should replace the gasket at the same time as replacing your thermostat.

Do NOT use any petroleum grease on the thermostat gasket -- Vaseline is a petroleum derivative. Many petroleum distillates degrade synthetic rubber, and Vaseline contains rubber-damaging distillates (which is why you don't lubricate condoms with Vaseline).

The thermostat can be changed without moving the alternator out of the way. However, the AC can be a problem if you have it. You will have to replace the coolant lost when you undo the hose, and then properly bleed the system.

You mention replacing the radiator and an upper hose, but not bleeding the system to get air out. This will lead to issue with cooling.

Heater core is behind the glove box. If you get hot air from the HVAC then replacing the heater core would be pointless.

[gts4]

On the valve cover, Toyota calls for use of form-in-place gasket at specific points. There is no call for sealant on the thermostat, and if there's one system where I'd be worried about tiny little bits of vulanzied rubber breaking off and getting stuck somewhere, it's the cooling system. Of course, you should replace the gasket at the same time as replacing your thermostat.

Do NOT use any petroleum grease on the thermostat gasket -- Vaseline is a petroleum derivative. Many petroleum distillates degrade synthetic rubber, and Vaseline contains rubber-damaging distillates (which is why you don't lubricate condoms with Vaseline).

The thermostat can be changed without moving the alternator out of the way. However, the AC can be a problem if you have it. You will have to replace the coolant lost when you undo the hose, and then properly bleed the system.

You mention replacing the radiator and an upper hose, but not bleeding the system to get air out. This will lead to issue with cooling.

Heater core is behind the glove box. If you get hot air from the HVAC then replacing the heater core would be pointless.

Great. I get hot air, so I won't replace the heater core. How do I properly bleed the system, without having coolant spray from the radiator cap once undone? What damage will I do when I drive with coolant and air? My coolant reservoir (where I normally add coolant) is full - should I still top up my radiator? I did not use a gasket sealant, just kept it in place with the thermostat housing bolted on top of it. Thanks!