The weak points of the 3vz are definitely the pistons and the headgaskets.
But i found solutions for both things.
Pistons could be custom made by wiseco.
I got a set for the 3vz and the 5vz! The main issue why the headgaskets of the 3vz/5vu blew is headlift due to too thin stock headbolts.
I got a set of arp headbolts
(which is for sale) and also a set of aro l19 headstuds! The last thing is for the 5vz built.
I also found out, that you could normally swap the 3vz headgasket to a smaller bore 5vz headgasket which cometic gaskets make.
The rest of the engines aren´t that bad.
The rods are absolutely massive and the crank of the 3vz could handle way more than the 5vz! They are differnt and i will wap the 3vz crank into the 5vz!
There is so much potential with these engines.
.
.
.got a lot of ideas in my mind and there are already a lot of ideas in 3d on my pc!
