I'm not familiar with the 4G64 engine, what's the max displacement you could get out of a 4G64? Is there such thing as a strokered 4G64?
The application is an AutoX car which is currently 2.3L 4G63. The circuits are short & full of twists, turns, & circles so high torque is a must, thus I'm considering maximizing engine displacement.
The plan is to use a 4G64 with forged internals with an Evo 9 mivec head, I'm trying to list the modifications required for such combo:
What type of head gasket?
What type of cylinder & head bolts
Head oil feed?
Water pump modification?
Oil pan modification?

Is there any vendor/s that offer a complete kit for such engine swap?
I'd appreciate any information

 

You can do a 2.4 stroker

 

Water pump adapter, head gasket, head oil feed line.... what about the oil pan?

 

Why would you want to go w/ a 2.6?

A 2.4 motor w/ a smaller/med turbo will be more than sufficient for auto-x

 

Well, I already have a 2.3L & I'm seeking some significant improvement.

 

Get a car with a v8. The 100mm crank is already questionable enough in regards to reliability. If a 2.3L with a small turbo like a bbk full, FP green, or even a stock turbo isn't torque enough for you, you need to move to a different vehicle.

 

a long rod 2.4 with a modern turbo will give you all the TQ to break the drivetrain.. no need for 2.6

 

Like letsgetthisdone said, if 2.4 isn't enough for you, then you need more cylinders.

And a better option would be a 2.3 on a 2.4 block with a better rod radio than the 1.5 on a 4G63 block. If you're racing, the better ratio will serve you well.

 

Is that the stock 100mm crank you're talking about or an aftermarket one?

You mean long rods on a 4G64 block... correct? Can you please write me some details, list & type of parts.

Again, please elaborate further with specific details, type of parts.
If I'm converting to a 4G64 then why not increase displacements to the max such as 2.5L/2.6L, I still have no definite answer!

 

Thank you Google

Every thread about the setup and more...

http://lmgtfy.com/?q=2.6l+evo

 

https://englishracing.net/collection...od-short-block

these guys built a bunch of 4g64 based evo engines

 

Any of them, they all break. They have a high pin offset. Not much can be done. For a street car they're ok. But for the abuse a track or autocross car sees, or someone trying to hit BIG power numbers, the 100mm cranks tend to fail.

 

Thank you all for the good feedback
Regardless, of engine displacement, if I'm using a 4G64 block with an E9 head what other modification do I need to perform? examples:
Oil pan
Oil pump
Water pump
Head gasket
Timing belt
Head oil feed line

 

Is there a reason you're changing from the 2.3? I can't see the torque difference being enough to justify the effort.

 

My plan for now is to buy a stroker kit for a 4G64 block, I'll decide what size later after doing some further research.
But first can you guys help find a 4G64 block with all needed supporting mods, oil pump, water pump, head gasket, oil pan.... etc?