12:1 compression

[SigmaProjects]

I got a question for the high comp people here. I'm planning down the road (in about 6 months when the motor is available) to get an engine swap with a motor that is 2.5L and running 12:1 comp stock and the stock figures is 204hp@6400rpms. And I was wondering with all that compression, what would be the best first step to make some more power or better response? Thanks for any help

[meintool]

Start out with the usually intake and exhuast if the fueling is stock and can handle the high compression i wouldnt worry about it but more air=need for mroe fuel so you may need to ugprade your fuel system fpr,injectors,chip etc, i would also deffinatly get some aggressive cams if you want to go all out why dont you port and polish head and port match both manifolds and throttle body there are numerous things you can do

[SigmaProjects]

I know there are a ton of things, but I was wondering what would be the best "first" thing to do. Thanks for the info.

[meintool]

what car is it?

it comes stock with 12:1 compression is there anything done to the car modification wize already? if its already a fast car i would do suspension but if its a stock motor and you want strictly more power the first thing i would get deffinatly a nice catback or custom stainless exhuast magnaflow has very nice stainless mufflers and you can get pipes bent at a muffler shop i would go with 2.5" pipeing possibly replace with a high flow cat

then if you want to go from there let me know ;-)

[SigmaProjects]

yea it comes stock with 12:1. So exhuast work would be your first bet. Ok coo. Thanks =D

[91 Celica St]

yea id go w the whole intake exhuast headers, expectially on a car w that high of compression, what kind engine is it? are you goin to build it or is it a crate motor?

if its a 22re you (most) likely wont be able to drive that on the street, youd either have to give it a rich/retarded timing tune or run higheroctane gas like leaded fuel

[SigmaProjects]

it's a brand new yota motor, 4GR, comes stock with 12:1 compressoin it's a 2.5L V6. It's why I have to wait almost 6 months before I can get one since I have to wait for people to roll their IS250s, lol. But it insures it'll be a low milage motor =D

[91 Celica St]

4gr-fse, me id go with something that could be upgraded easyer like a 2jz, but then again its always nice to be difffrent, if you reallywant a 3gr serires engine go for the 2gr-fse, its in the new is350's and has like 315 hp, that would be NICE to have

[SigmaProjects]

yea, I mainly wanted to go small. 2JZ yea gobs more potential. But hangs out long. I didn't want to make a ton of power and I wanted something that wouldn't suck a lot of gas. I'm hopeing for a better weight distribution up front with the 4GR. Should sit much nicer than any inline motor and I'm hoping it's a bit more compact than the 2GR. Basically I wanted the 4GR for, low milage, closer to CG weight distribution, being different, decent power with decent MPG, and with the 12:1 compression I thought I could easily get it to 215~220hp no problem. The rest of my money I want to spend on suspension/brakes/chassie then back to the tranny/drivetrain.

[91 Celica St]

but you gotta remember theres basically no room to inprove on that engine w out rebuilding it w low comp pistons and boosting it

[SigmaProjects]

yea, not planing on going any higher than 215~220hp (204hp stock). I want it to still get decent MPG and the rest of my money is on suspension/chassie/brake stuff, then back to drivetrain.

[91 Celica St]

whatever floats your boat

[SigmaProjects]

i know you think it's pointless to swap to this motor since it's not powerful to begin with and there is basically no aftermarket support for it. But like you said, whatever floats your boat =D

[91 Celica St]

oh no i like the idea, if your goals are only 10-20 more hp then what the eingine has i think this would be a great engine to have, loads of toraqe, isnt that heavy and would make your fr/rear bias about 50/50 in that car, good choice for your goals, just not a good choice if you want alot of power

[SigmaProjects]

yea I'm not much of a drag type guy. I like auto-x or rally-x more. I mean I need power, but I don't need much for what I want to do. I will be gaining 100+hp and 40+tq over my stock motor =D =P