16v bottom end limitations?

[Hachi-Rocku]

im running a 3 rib jdm 4age and wanted to know how much the bottom end can take before they normally call it quits? plans are to shave head a bit trd head gasket cams etc. they dont have oil squirters and that but are they that much worse than the 7 rib blocks?

assuming all cooling and running a quality oil would my motor last a whole track day reving up to and around 8krpms? i did a comp test and everything looks good. numbers all even. number depends on gauge.

what do you guys recommend to improve bottom end?

thanks all

[Hen may possibly be a nut]

I've never seen or heard of any 4AGE busting a block. There may be more flex leading to more chance of other problems, however I think you'd have to be getting pretty extreme before that became a problem.

Many years ago I saw a Road and Track (they know about 4As from plenty of hands on experience) display engine at an event. It was a serious build (200+hp??) and used the 3rib block. While I was there someone mentioned the 3 ribs, and Terry replied that it was no issue.

Hen

[Hachi-Rocku]

thank you hen. i never heard of 3 rib blocks just breaking either but everytime i did a search for info about them people just say 'get 7 rib its stronger'

i dont plan on touching the bottom end at all. it should be okay with the mods i want.

thanks

[Jip86]

the threads a bit old i know but, i bought 2 4age's at one point one motor had conrods #1 and #3 hanging out on one side and #2 hanging out the other. so yeah a 4age will definitely throw a leg out of bed if you treat it bad enough.