so here is the story,

I bought my evo 1 year ago used and its been nothing buy problems, the kid that had it before me failed to mention a few things about the car when i bought it from him (f**kin d-bag). It drove fine for a few thousand miles before the problems started occurring.


fast forward to today:

I recently spun a rod bearing and am in the process of pulling the engine as im typing this. anyway i look at the vin number on the side of the block and it dosent match the cars vin (no surprise, i had my suspicions that the block was changed). anyway i decide to run a carfax on it and it turns out its from an evo 9!!!!!! so all this time ive been running an evo 8 head and an evo 9 block.

Im sending my engine out to be built and i was wondering if anyone knew if any extra machine work is needed to use this block with my head. ive read that there is an extra oil passage with the evo 9 or something along those lines. has anyone done this before?

 

well i guess no one knows definitively. Ill update this thread with what i find out to answer this question once and for all

 

The only difference I know of is they converted the factory oil pressure gauge port of the 8 to feed the MIVEC to make the block work with the 9 head.

To get a 9 block to work on an 8 you would need to make an adapter to get the OP sending unit to screw to the MIVEC port.

 

Or you could buy a IX head and run MIVEC.

Not sure that would be cost effective.

 

yea, thats already been done. now i know why the adapter was there, i thought the original owner striped the thread or something.

 

although that would be nice, i aint got teh moneys



i will instead just be getting some headwork to my 8 head

 

for the mivix conversion it would be alot of work for all the wiring necessary finding the head, cams, cam gears, solenoids, and evo 9 ecu.... not so much the trouble finding the parts but the trouble making them work

 

i dont have alot of tech help but i do feel for you on this. i bought my Evo used also and ended up it was previously stolen. Nope the car fax didnt tell me that either untill i ran the VIN again (2nd time) few months later. hope it works out.

 

Dam so it can be done like LSVTEC haha

 

haha lsvtech i wish it was that easy!

so any updates on this im in the same issue also but i have a evo 9 complete motor already and im trying to get a evo 8 head to make it work

 

I miss my ls vtec LOL

 

works 100% all you need to do is get an adapter to screw in the oil pressure sensor.

use an 8 HG