harry007

I know this has been discussed on here many times... But I'm after a sti wagon, and want to know of peoples experiences etc. I dont think anyone has and sti engine with 100k on it ? i know sti rebuilds are common, some too common on lol.

what i really want to know is which version is the safer bet? I'm currently looking for v2-4. I think from reading some previous threads 5-6 are the problem ones?

Surely I know the newer version sti's are very reliable. I've thought about this long and hard, and need ideas on making the sti engine live longer when I do get the wagon. regular oil changed every 2500miles? stick a turbo jacket on the turbo to reduce heat hitting the 3rd cylinder, get ecu chipped from esl with map for u.k fuel. and yes I do realise it also depend on how you drive it

any suggestions, advice and personal experiences welcome. I have had two previous wrx wagons, just scared of the sti's going BOOM

I also intened to keep the engine mods basic. Just a remap I think.

chris-RB5

The dreaded bottom end going bang is generally due to oil pump failure thus causing to the big end shells to go dry, Rcm do a modified fuel pump which i am told is the best bet for a new oil pump
As for the sti engine, all the versions are forged pistons upto version 8 so i would say any classic sti engine are good ones.

harry007

so do oil pumps fail more on sti's than wrx's? because of a different design maybe?

tiny gsy

my sti3 has 94000 on it and has only had new headgaskets

harry007

hey that is awesome!!!! any mods? what you done to it pal, how often you service it?

Harry

tiny gsy

Serviced every 6 months roughly, have a look in view my scooby for the spec.

Tbh, you`ll rarely here of engines that run fine So what you`ve found is only stories of them going wrong, I don`t believe its really an issue mate

chris-RB5

Bottom end failure is not always down to the oil pump nobody really knows the cause, (Not my words my subaru dealer mechanic), the oil pump in my eyes though is a very big factor, but it's not always the case in complete failure. Subaru knew there was a fault with all classic engines regarding the crank and big ends but didn't acknoledge it has it would have cost them millions for an engine recall and why should they when it's not a safety issue and more money can be made when the car was out of warranty.

chris-RB5

like tiny gsy said though you ony ever hear about when somebodys bottom end goes bang, just think of all the others that haven't

Although mine has

harry007

great info guys.

anyone else want to comment?