so i've had a 1hdt swapped into my fj62 for about two years now. i was told by the guy who bought the engine and did the swap for me (hilltop cruisers) that it had 120000km on it (it however has 450000km written on the front of the valve cover so i don't know what that means. my truck had about 450000km on it when it was swapped in). when i got it it had a little blow by but nothing that really impressed me too much. a little oil down the side of the valve cover and onto the exhaust heat shield but nothing that ever left a mess on the floor. now i have had the injectors rebuilt and an intercooler installed and it boosted to about 16 psi max but it runs between 6 and 12 most of the time. i did a compression test and all cylinders were within 40 psi of each other but were between 450 and 490 psi (from what i've read that's a little low).
now after this past summer pulling a trailer i have a ton of oil coming out the valve cover breather. it's leaving a huge puddle on the floor after just a day of driving with no trailer. i never over heated but did see my engine temps climb to the point i had to slow down to keep from over heating. my egts were constantly between 1000 and 1100 for about 5 hours. it was a stiff hot head wind!!
so with that story in mind what have i likely done damage to? all the oil is coming from the breather for sure. the oil cap doesn't blow off if i let it sit loose on the cover but do i have to rev it to test it properly? what other tests should i be doing? i have a mishimoto catch can with baffling in it but it's not helping. i'm looking to get a provent 200 for the time being to stop the mess but that doesn't address the cause. i don't feel i'm lacking power but it may be a little sluggish compared to before. hard to tell. it's smooth with no knocks either. am i looking at needing a rebuild sooner than later?
now after this past summer pulling a trailer i have a ton of oil coming out the valve cover breather. it's leaving a huge puddle on the floor after just a day of driving with no trailer. i never over heated but did see my engine temps climb to the point i had to slow down to keep from over heating. my egts were constantly between 1000 and 1100 for about 5 hours. it was a stiff hot head wind!!
so with that story in mind what have i likely done damage to? all the oil is coming from the breather for sure. the oil cap doesn't blow off if i let it sit loose on the cover but do i have to rev it to test it properly? what other tests should i be doing? i have a mishimoto catch can with baffling in it but it's not helping. i'm looking to get a provent 200 for the time being to stop the mess but that doesn't address the cause. i don't feel i'm lacking power but it may be a little sluggish compared to before. hard to tell. it's smooth with no knocks either. am i looking at needing a rebuild sooner than later?