Unfortunately crankwalk is quite common on the Evo 1-4, there is a large thread here which gives details.

It would probably be cheaper to source and fit a latter Evo engine (5->) than rebuild your own one.

 

sounds expensive

will a evo 5 engine fit straight in and run off the evo 4 anciliaries?

 

also,will that be causing early wear of the big ends as it had a set fitted 10000 miles ago

 

would an evo 7 engine go straight in?

 

evo

the blocks are the same but you will need to change the ecu fuel pump injectors and regulator for fuelin as they run higher presure not the cheapest option as iv found out
im in the process of rebuildin mine at moment found crank on ebay complete with shells and at rite price if i was you and dependin on money you wana spend look on here for people who have fitted stroker kits and buy there spares to replace your crank n just buy new shells

 

I actually snapped the crank in my IV about 2 month ago, brought a crank with shells but after the engine was stripped there was two much internal damage to try and replace the crank. So i went down the route of fitting a VI engine instread. If your interested the crank is at Pennine Way Garage im sure they could send it to you, do a google search for there web site.

 

think ill have to get sump off to acess my internals

 

have a look in here iv engine for sale
http://www.lancerregister.com/showthread.php?s=&threadid=126166

 

didnt notice that-thanks