272's to much for 16G?

[firebirdvert305]

Was curious to know about what you guys think. Are 272's too much for an evo 3 16g? Lemme know your thoughts, any feedback will be appreciated.

 

[fourreGsixty3]

I presonally dont think they are too much, they will let you rev higher up to the 7400 range if memory seves me correctly. If you are doing cams then I would go with 264 intake cam and 272 exhaust cam, or Comp Cam 101200's, Comp Cams says on its web site that these net 35 hp approx. and they are street/stripe cams very nice.

 

[larsrya8]

I cannot remember the site for the life of me. They did a test on the power increase for certain cams, but they only used a 16G for the test, so it started to run out of air in the upper RPMs. Their "conclusion" was that the HKS 264's and 272's offered similar power for a 16G.

However, unless smog is a problem I would recommend going with the 272's. You will be upgrading that 16G eventually, and you'll be happy you bought the 272's when you do. If smog is a problem, many have had success with the 264/272 combo. With a good tune they've been able to pass in California.

 

[firebirdvert305]

Well currently im living in FL where there are no car inspections or smog tests, its got its good and its got its bad. As many people have told me to upgrade to a 16G first, i like to do things a little differently. Id rather build my setup around my turbo, rather then having my turbo rely on my setup (if that make sense).

 

[larsrya8]

Well currently im living in FL where there are no car inspections or smog tests

In that case I would recommend the 272's. No reason to not go all out.

 

[fourreGsixty3]

Well currently im living in FL where there are no car inspections or smog tests, its got its good and its got its bad. As many people have told me to upgrade to a 16G first, i like to do things a little differently. Id rather build my setup around my turbo, rather then having my turbo rely on my setup (if that make sense).

Yep thats a good idea to build your car up then upgrade the turbo. Since you have no emmissions checks throw the 272s in.

 

[andymoraitis]

Was curious to know about what you guys think. Are 272's too much for an evo 3 16g? Lemme know your thoughts, any feedback will be appreciated.

I have Comp 200's (smilar to 272) on a Big 16G and I see boost falloff from 26psi down to 22 by 7000 RPM since the VE of the motor has increased with the new cams. Just be aware that your EVO III may not hold boost all the way to redline like it used to, but it will certainly be making more power across the powerband. Make sure you have plenty of injector and that the rest of your fuel system is up to snuff since the introducion of more air in to the motor is going to increase fuel needs. Since you have a chipped ECU, going to 750's would be a good idea. 650's will be OK, but allowing yourself future growth would be a wise choice.

If all of the right supporting mods are in place, you'll be fine.

Andy

 

[1992awdlaser]

http://www.automotosports.com/cam_test.asp

 

[gSx_r1der]

If all of the right supporting mods are in place, you'll be fine.

Andy

well from someone who has the 272 combo you'll be ok. i was using the 272's on 450's 550's and rc 1000's. boost does fall off in up rpm band casue my intake manifold is just choking the engine off. but overall you will be very happy with you purchase as I know I was. and 4th gear pulls on the freeway all the way to redline are priceless as you can see my next upgrade will be a turbo, and a turbo with a smim should be heartbreaking.........


Edit: fuel cut was a b*tch with the 450's and 550's so I wouldnt reccomend anything smaller than 720's. If your not looking for that much fuel then why are you looking at this much cam(272's)

 

[firebirdvert305]

gsxrider when you were hitting fuel cut how much psi was u running? What was your fuel setup at the time? What did you tune with?

 

[larsrya8]

http://www.automotosports.com/cam_test.asp

Yes! AMS... thanks for the link.

 

[LRS95TSI]

i have a fp1i/fp2e setup on my car with an evo3 turbo. i think that is a very good setup. lobing is ever so slightly and the power increase is dramatic.

 

[gSx_r1der]

gsxrider when you were hitting fuel cut how much psi was u running? What was your fuel setup at the time? What did you tune with?

With the 450's nothing, with the 550s safc and maft zeroed out, and with the rc1000s safc boost at all sizes were 19-20lbs on 91

 

[Deepsixer]

Throw away that 16G and get a 20G if you want the full potential of those HKS 272's. The turbo efficiency of a 16g is insufficient for those cams. I'm talking from experience BTW. The 20g is perfect for those cams...272/272 and you will need a G suit to hold you in your seat with a 20G. Tune with some race gas and the world of real power will open up for you. I had a big 16G for maybe 3 mos with those cams. It was well worth the money for the 20G.

 

[firebirdvert305]

What were ## fuel mods, and how much boost were u running with the 20G? Was it internally gated or external? Any HP #'s with the 272's u had with it?

 

[Stoner]

I have 272's with my EVO3B16g and I love them. Boost will fall off a little in the upper range but it is worth it. I can't see any reason they would be too big for your turbo. The EVO turbo loves >25psi with 272's!!

 

[Deepsixer]

I have 660cc Greddy Injectors and an AFC. The Turbo is a Hahnracecraft Super Turbo 20g that internally gated. No boost creep whatsoever because it has a 10cm housing that is hhhuuugggeee!!!! I haven't dynoed the car yet, but the race shop that I take it to that tunes my car conservatively tuned it to 21psi and stand by their opinion that it's 375-400hp to the wheels. I'm confident that if I tune it for 25psi it'll be in the 425-440hp range with te race gas I use.

http://hahnracecraft.com/hahn/parts/s20gh.htm

 

[firebirdvert305]

for you guys, with the 272/272 cams installed on the car and with the stock 450's(for now) whats the max amount of boost i should be running? Im still on the stock 1g mas(hacked) for now as well, What do you guys think is a safe amount of boost to run?

 

[gSx_r1der]

for you guys, with the 272/272 cams installed on the car and with the stock 450's(for now) whats the max amount of boost i should be running? Im still on the stock 1g mas(hacked) for now as well, What do you guys think is a safe amount of boost to run?

tune for however much boost your car will run, go tune your car with a logger, wbo2, egt or go be frisky and turn it up untill you can feel timing being pulled anywhere before 7500rpms(or obviously fuel cut)

 

[fastezz]

Was curious to know about what you guys think. Are 272's too much for an evo 3 16g? Lemme know your thoughts, any feedback will be appreciated.

I am running a evoIII 16g with dks 272`s and I think the setup is greta I am only running a really rich 14-15psi though because my logger cable is fried so untill then I cant tell you how its going to be on different boost. I will be running 20lbs daily in a few weeks after my clutch is broken in so I will let you know then.
Ryan

 

[ChvyKc]

If you look at the numbers on the tests that AMS did you can see that the 272/272 only made one more peak hp than the 264/272 but almost ten LESS ft/tq. I think that I am going to run the 264/272 because this turbo will be on my car for a while. Ten foot pounds is well worth the difference in cams in my opinion. Good thread by the way 1992awdlaser

 

[Stoner]

Dont forget that the AMS test was done with a small 16g not an EVO 3. I think that the EVO 3 would show more of a benifit with the straight 272 combo over the 264/272 combo. The small 16g's torque went up quite a bit when the boost was raised to 25 psi on the 272's but the boost was still falling off badly. The EVO turbo will hold boost better in the upper rpm range.