Is there anything that can be done to help with the side loading on a 2.3 /100 mm 4g63 setup? I'm having my engine built by Tcomp and its a 2.3 /100 mm crank , I don't expect it to last for ever but not 20,000 mile or less for example, the car is not a DD and only used for fun.

 

Is it much different that i should buy a premade for twice as much? I dont mind putting in the wrench time.

 

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As long as you stay within the RPM limit of that set up, that motor should last you a while. I believe on a street engine with forged pistons, 5-5500 fpm piston speed is the MAX you ever want to run the car to. Realistically you probably want to keep it under 5000 for longevity. Nothing can be done about the side loading unless you're going to change your set up.

 

The 2.2 problem is that EVERYTHING isnt an off the shelf ordeal. 2.4 blocks are super inexpensive and lately the 2.1 is becoming more commonplace. I recommend the 2.1 for EVERY single application I touch. Not only is the motor better at helping keep the drivetrain together (delayed torque), the motor stays together longer (reduced side load on pistons) with a 162mm rod (significant reduced piston weight) the motors make more power and respond better to bigger cams, sheet metal intake manifolds, and bigger boost numbers.

IMO the 2.1 can not be beat..... theres a reason why almost every evo drag record was set with a 2.1 destroker.

 

The only thing you "need" that is "custom" for a 2.2slr is the 153mm rods, and English racing sells them from Carillo for about $1k. Other than that, you can use shelf pistons if you're happy with the compression ratio you'll get, and plenty of companies make a 94mm crank.


You go to a 4g64 block, your down pipe may not fit due to the taller block, you need a modified water pump, the head gasket is always more of a liability, and you you have to dick around with cam timing. Meh..


And a 2.2slr is more discplacement. It ends up being a 2.15. The 2.1 is like a 2.09. So you're giving up 60cc. I've never driven, or ridden in a 2.1 car though. SO I can't comment on the difference. I know a 2.2 (94mm) feels quite similar to a 2.3(100mm) motor. It doesn't give up a lot down low for only being 1/2 of the displacement increase.



Keep the rev limit at 8k and you'll be fine. From what I've seen on here, Tom builds a good motor.

 

When you say the 2.1 can not be beat, youre saying the 4g64 block destroked correct? Or would it be the same as a stroked 4g63?

 

He is refering to the destroked 4g64. It has a R/S ratio of 1.9x or somewhere in the region; it should love to rev. I honestly haven't seen a ton of them done though....maybe thats just me.

 

That was what i thought. From what ive learned i think that is the route i want to take it. Thank you for clearing that up.