100% this. There's more to a bulletproof 7M than a new gasket. I had my head hardness tested, crack tested and spectro'd prior to use.I wrote a more in depth comment on why they're meh, but it's such a dead horse that I deleted it. Basically, the issue isn't just the head gasket and improper stud tq values; Toyota used weak aluminum that was prone to annealing, as well as engineering a head bolt seating area thinner than it should have been. So what happens in many cases is that even after a metal HG and properly tq'd headstuds, the head will still lift due to cracking or stretching of the aluminum.
Those that wanted truly bulletproof results bought new heads from Toyota, had them x-ray'd for microfissures/cracks and hardness tested before settling for one.
That said, for daily driving and lower power levels, it's fine and I'd even own one for that.
(7M and JZ like reliability should never be in the same sentence unless you're someone like Duane Stevens.)
Dont take their comments out of context, youre not building a 600hp 7mOkay, then. I'll try to find one with a JZ. Thanks for all your advice.
Back on topic, has the person who was going to talk to Tada done it yet?
And on the inside right now I'm just like "Lmao I singlehandedly derailed 15 posts and defined a meme for this forum with one ask".
1.5jz only makes sense if you have a blown 1jz, and want to replace and upgrade the bottom end without changing your entire setup. You could probably piece together a craigslist 1jz head and 2jzge bottom for cheap but will most likely be more expensive piecing the rest together and with more complications than just buying a 2jzgte from the start.Are you entirely sure?
Just kidding. I might do that 1.5JZ thing for the fun of it.
That is a jdm-drift-boi myth, they have the same compression ratio.But what about the higher-compression head? It would make more power, right? I know people put GX160 heads on 212-clone engines because of the higher compression.
The 2jzge and gte heads flows better. But I have yet to see a flow test involving the head and intake manifolds though as the 1jz has short runners and 2jzs have long runnersWoops, been spending a little too much time on the small engine forums. My bad.
So there's practically no difference between a 1.5 and a 2?