280s on stock 1G? or better off with 272s?

[wongsl]

Hi folks, I couldn't find the answer after searching, so I'm gonna ask

Let's say on a pretty stock 1G TD05, by plonking in a pair of BC280s and BC springs, would I (on top of killing the idle and getting poor lows)

1) hardly gaining any power on top end
2) be performing worse than stock across the rpm range
3) be getting better power by switching to 272s

oh why? cos BC were out of 272s and I went with 280s. Now I'm contemplating switching to 272s.

 

[c4uldr0n]

you are moving your power band very high... daily driving will require to drive around atleast 1-1.5k rpm higher than stock to be comfortable and to have any power... up top I'm sure you will notice some gain, but would be better suit with a larger turbo for optimal gains....

good luck

c4

 

[wongsl]

bump.
looking for more advices.

 

[wvturbo2]

If your running a small turbo 280's are going to kill you because your turbo will be out of power when your in the upper rpms the 280's need you to be in and your going to lose low end with the 280's. 272's will be a better fit for an evo3 even to a larger turbo setup.

 

[spitfireskatr7]

I have these cams right now, with double valve springs and adjustable cam gears on a evo III 16g, and they idle so smooth it doesn't sound cammed at all, daily driving is fine, i shift right around 3 for cruising and its 100% normal, no one who drives it knows its cammed, these are by far the sweetest cams i have ever owned, and it pulls pretty hard up top, def. harder than it did before them, it doesn't really die off till around 7k, which 16g doesnt really make power up there with or without cams, i'm happy with them i think they are def. a good investment

 

[wvturbo2]

I have these cams right now, with double valve springs and adjustable cam gears on a evo III 16g, and they idle so smooth it doesn't sound cammed at all, daily driving is fine, i shift right around 3 for cruising and its 100% normal, no one who drives it knows its cammed, these are by far the sweetest cams i have ever owned, and it pulls pretty hard up top, def. harder than it did before them, it doesn't really die off till around 7k, which 16g doesnt really make power up there with or without cams, i'm happy with them i think they are def. a good investment

The 280's are def going to pull further than that 16g can go. also 272's don't require springs. If you plan on going bigger turbo then I'd go 280;s. I would imagine I'm not positive that better results can be had from 272's on evo16g

 

[daren_p]

IMO 280's aren't going to net you big gains. They are designed for large turbos that make there power in the upper rpm band & past the stock redline. The 14b starts running out much to early to get the full benefit from these. Personally I wouldn't consider these unless I was running atleast a 50 trim. 272's would be better suited & give you a broader powerband with the smaller turbos.

 

[EvolvingGST]

I think you need a lot more modifycations than to drop in set of 280s or even 272s. Like many said you are going to kill the point of cams because the turbo is out of efficient range. Most stock turbos pull to about 5000 if you are lucky. 272s are good for a 16g - 50 trim. Then from 50 trim up you should probably get 280s.

If you dont care about idle and are building a drag car then go for it. BUt for streetable purposes I dont see more than anything more than 272s. Most people wont even use the complete potential of 272s

 

[EvolvingGST]

IMO 280's aren't going to net you big gains. They are designed for large turbos that make there power in the upper rpm band & past the stock redline. The 14b starts running out much to early to get the full benefit from these. Personally I wouldn't consider these unless I was running atleast a 50 trim. 272's would be better suited & give you a broader powerband with the smaller turbos.

Hahaha 2 seconds before me... and also suggest maybe 264s for a smaller turbo i.e. 14b, FP28 and anything less than a E16G