Evo IV engine fit in Viii?
Evo IV engine fit in Viii?
Well I have recently found that my 2.4 has some scores in the cylinder walls of 2 and 3. So I need a good cheap core my 2.3 build. My question is the Evo iv 4g63t has the same orientation as our viiis, but wanted some one tone able to talk from experience if the iv block is the same. Also I have done a google search for this info.
I have a Evo IV and Evo VIII and there are differences in the two engines. First, on the exterior on the engine the thermostat housing is different, the injectors are smaller at 510cc, and I believe the sensors are not compatible with the VIII. There are differences in the IACV as well. You can run the EVO IV radiator and hoses in the VIII to move the coolant connection to the side if you want to or swap the t-stat housing from the VIII to keep the stock VIII radiator hose placement. For the fuel and intake situation I believe you have to swap the VIII sensors, IACV, injectors, and alternator plugs on to the intake manifold and throttle body on to the IV engine to run in the VIII. As far as the internals, the IV has a different main bearing setup than the VIII. The IV has a 1 piece design incorporating the thrust bearing into it whereas the VIII has a 2 peice bearing and separate thrust bearings. The 1 piece bearing has been blamed for a lot of crank walk victims but I have no issues with mine. From what I understand the blocks are essentially the same except for the main bearings.
I keep my Evo IV around just in case I have problems with the VIII and will definently swap the engines if that is the case, you just beat me to it. Good luck with your swap!
I keep my Evo IV around just in case I have problems with the VIII and will definently swap the engines if that is the case, you just beat me to it. Good luck with your swap!
I have a Evo IV and Evo VIII and there are differences in the two engines. First, on the exterior on the engine the thermostat housing is different, the injectors are smaller at 510cc, and I believe the sensors are not compatible with the VIII. There are differences in the IACV as well. You can run the EVO IV radiator and hoses in the VIII to move the coolant connection to the side if you want to or swap the t-stat housing from the VIII to keep the stock VIII radiator hose placement. For the fuel and intake situation I believe you have to swap the VIII sensors, IACV, injectors, and alternator plugs on to the intake manifold and throttle body on to the IV engine to run in the VIII. As far as the internals, the IV has a different main bearing setup than the VIII. The IV has a 1 piece design incorporating the thrust bearing into it whereas the VIII has a 2 peice bearing and separate thrust bearings. The 1 piece bearing has been blamed for a lot of crank walk victims but I have no issues with mine. From what I understand the blocks are essentially the same except for the main bearings.
I keep my Evo IV around just in case I have problems with the VIII and will definently swap the engines if that is the case, you just beat me to it. Good luck with your swap!
I keep my Evo IV around just in case I have problems with the VIII and will definently swap the engines if that is the case, you just beat me to it. Good luck with your swap!
Guess I am looking for a good 4g63 core.
The 2 post above are correct. You hear more crankwalk stories with the IV and below engines but the IV will go into the VIII. Also, if you look around at engine builders sites, they mention acceptable cores for builds are the IV-IX blocks. I assume that means they will build a IV block with confidence to address crankwalk. Now, what their methods are to standardize and prevent that is the question.
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