Comon problems in 2uzfe

[thalj]

my question is what are the comon problems you people faced when modifying 2uzfe engine (for turbo use) ?

most problems i get from the heads.. is it the same with you guys ?

 

[XR8tt]

Valve springs can be alittle soft , depending on boost..
But most important the rods are designed to rev with quick throttle responce..The trouble is the rods are very light and don't take well to big power gains... Either fit some 1UZ rods, Lextreme rods or after market...
For turbo use the compression is alittle high sp I assume you're changing the pistons to lower compression to altleast 8.8 to 9.5.. [4v motors can run higher comp] I'm using Argo rods and C.P pistons on my 1UZ...
http://www.lextreme.com/forums/forumdisplay.php?f=44

http://www.lextreme.com/allgo.html

Check above links