So what do the experts think about the 2.35 Destroked engines? In theory the longer rod is supposed to have less wear and tear on an engine. The 2.35L is basically this.... EJ257 block 2.0L crank (preferably the 207 crank which I have access to one) Forged H-Beam rods Forged Pistons Heavy Duty Wrist pins and Rings ACL Bearings Balanced rotating assembly These are supposed to have the tq of a 2.5L but can rev out to 9K. I won't but would like to go 8K if I could. I know this.....my turbo is gonna be a GT35R with the Tial .63 housing. Now if I stayed 2.5L this is the setup Stock EJ257 everything except for forged pistons The heads on both setups will be.... EJ205 WRX heads with cams, springs, retainers, and mild porting. Which of the two block setups will be better suited to daily driving and more suited for longevity? I will not push any more than 500 hp daily. Most likely on the meth map I will be between 450-475hp. I know Matt was thinking of this setup at one time so it has to have some merit. Homemade_WRX on Nasioc swears by the 2.35L setup. Discuss......
It seems like it would be a great compromise between the revability and smoothness of the 207 and the brute torque that a 257 can put out. I dont know anyone in town thats ever run a 2.35 to really comment but Axis Racing used to sell 2.35 blocks like hotcakes 5yrs ago when the 2.5s were first coming around.
On paper it all looks great, but in the real world it makes little difference on the suby. I would just run the big bore stock stroke ej257 block. Gets you 2.6L and trust me the added displacement makes a bigger difference on the track than being able to rev the motor out.
So simply going to 100mm pistons makes the 2.5L what with stock rods Doug? Doug my track days are over. I went last time when you tuned my car and then again when Scott tuned the headers. Never went back so that tells you I have no interest in the track except when I get tuned to see what difference it made. Now when I go I call the owners of the track who will open it for me and the local friends so we can get 20 passes in so it does get the crap beat on it for the day I'm looking more for the street car with some git er done umph....much like that beastly 08 STi of yours. How long will the 2.5L last on Topspeed's tune with my meticoulous maintenance? Think it'll stretch out to 100K? It's not like I'm beating the crap out of the car 24-7. Most my commute is cruising. I go WOT maybe 5 times a week but I visit 15 - 18 psi regularly.
The only thing I would be concerned about would be the WRX heads. After seeing what LiquidForce did with 4 different turbos all having the same fall off point, then going to different heads and seeing a huge difference, it seems like a definite choke point in your build...IMO
Did you not read it all? Built WRX heads. LiquidForce's heads are the exact same casting as the WRX heads. He just has cams, springs, retainers, and oversized valves.....the cams being the biggest help.
I apparently stopped at EJ205 WRX heads. Damn...:sx: Sounds good to me then...can't wait to see the results!