I was just curious as to how high can I safely rev my motor to with the HKS 280's.

i hear that some people rev to 8500 without any problems...

can anyone advise?

 

do you have APR head studs?? what is a big deal about high rev anyway. it's qabout where your RPM sweet spot are. for me i launch the evo at about 4500rpm, run it up to 7200 1st gear, and shift at redline the rest. There's a reason why for the red line you know. why would you want to take your evo rpm up that high anyway??

 

I do have ARP headstuds sitting here in my room which will be installed once I get the cams. I figured I'd rev as high as the motor could go safely in order to take advantage of the cams....

worse come to worse I can call a shop i.e. buschur, AMS, turbotrix to get my questions answered.

another question, will valvesprings/retainers be needed to rev the 280 cams to 8000-8500 RPM's???

bump for more responses...

 

Vboy, please stop responding with ignorant statements. The redline is nothing. It's just a place where the tach turns red. Big deal. Shifting at 7000 is too early for a stock cammed Evo. For one with 280s, shifting at 7000 is retarded. I think Blue Evo 8 is pretty dumb for living at home while owning and MODDING an Evo, but that's his prerogative. You, on the other hand, need to leave advice such as this to those who know what they're talking about. I haven't even answered yet, because I am not educated enough to tell him if 8500rpm is safe or useful. I would suggest stopping at 8000rpm so as not to be too risky, but then again, he put 280s in a stock-turbo'd Evo while living at home with his parents, so I don't think he really cares.

 

Hey man why do you have to attack me and make remarks about me living at home?

Quite frankly its none of your business. I have a college education, make a decent living, have a beautiful girlfriend who loves me for who I am, have my health, friends, spending money, look much much younger than I actually am, etc etc etc. I'm happy with the decision I made and have my own plans and goals for the future. Its not like I stay home, dont work and do nothing while owning a MODDING a new 05 EVO and an $9K sportbike while smooching off my parents like a bloodsucking leech for every dime they got. I do my share to contribute to the family as well.......no hard feelings man, but lets stay on topic.

Thats right and I dont care.....I hear comments like this from my close friends all the time....but then again, sure they do live on their own in a small apartment with 2 other roomates in a noisy crowded NYC neighborhood with hard to find parking, and struggle to make ends meet.....where I am here at home, life is good, I have some savings in the bank, and my neighborhood is safe and quiet enough for me to get a good nights sleep.

 

Wow, that says it all right there. Even your close friends know what's up, and you just stay at home livin the good life. If you can't see how awful that sounds, then I can't help you. Much respect to your friends who realize it's more important to be a man and live on your own than to live at home and spend all your money on toys that would never be affordable otherwise.

Anyway, you completely ignored the rest where I was trying to help you out. The whole living at home issue must really get to you, because it wasn't even the focal point of my response. You should try living on your own and affording all this stuff...especially the part about having to worry if your car breaks from modding it so much then having no warranty...that would suck (if you didn't live at home).

 

I hear you on this but I do get along with my family. i understand about being a man and living alone...which is ideal, but is not what is where my life is now. Although it might sound aweful to you dont underestimate people who live at home cuz their lives can change for the better down the road. I know of some examples... a local civil court judge I know who is now 49, lived at home with his folks till he was 39, but then when he got married bought a $1,000,000.00 dollar house a block away from my house (his folks live across from me), and a buddy of mine as well who just like you makes these comments, well lived at home with his fold till the age of 33, but then moved out at 33.5 and is now renting an apartment down south when he got engaged. (In our many long talks I told him practice what you preach)

And my last comment, while im still on my soapbox, many of my friends who left home live in small apartments with 2 roomates or so left because they DO NOT GET ALONG with their family!!!! and to this I must ask, how sad is that????



although you claim your response about me living at home is not your focal response, but still the comments and remarks didnt need to come up in a topic about cams and rev limits, but thats okay, its already been said.

but I am aware of the additional expenses of living "on your own" that make it hard to afford TOYS, as compared to living at home.

 

Wow, why dont you guys talk about personal business thru PMs. This isnt the "I make more money then you and have a bigger house then you thread"

To go back on topic and answer your question. I would NOT rev the motor past 8,000 RPMs unless you had upgraded valve springs and retainers especially on 280's. Once you have upgraded springs and retainers I'd say you can rev to 9,000 RPMs safely engine wise. I dont think your tranny is gonna like 9,000 RPM shifting tho.

 

Thanks!

 

Warrtalon-

How 'bout you lick the back of a poisonous frog

 

damn Warrtalon your a dick

 

I hate warrtalon, he did the same thing to me, but a diffrent topic.

How are going to judge people on the internet you friggin loser, get a life!!!
you don't know him and you don't me, and if you meat me you wouldn't have the ***** to say to my face.

I'm 6 foot 3 and 200lbs and played sports my hole life,

sorry

good question blue evo 8, I would like to know also

 

I don't know for sure because I don't own an Evo but looking at tuning packages, most stage 1s lift the rev limit to 7600rpm with ARP studs, so you should be good until at least that. I'm not sure whether you need to upgrade conrods to go higher.

 

+1

 

Unless you have stiffer valve springs and ARP rod bolts I would advise you to leave the rev limit as stock. Just because you, or anyone installed 280 degree cams, that doesn't mean that the engine is capable of reving high enough to promote their duration.