I've built many race engines, and one thing I know, valve trains don't need to be broken in. After a few miles, all the air is out the hydraulics and the valve seats are peened and deburred.

NOTE: The old Quickway cutters sometimes left some chatter marks on the seats if the operator didn't know what he was doing (loose pilots and/or too much pressure), but I haven't seen this in a long time. After 6-10 gradual run-ups under moderate load you should be good to go. Compression will continue to increase slightly for 500-1000km as the valves seat in, but hard driving during this time won't affect longevity or durability of the engine.

 

[QUOTE=sushidog]I've built many race engines, and one thing I know, valve trains don't need to be broken in. After a few miles, all the air is out the hydraulics and the valve seats are peened and deburred.

Partially true, w/o getting technical, flat tappet actuated valvetrains are recommended to be broken. However, as sushidog said, the LE5, being a roller setup, does not require a break-in.

 

[QUOTE=JBP]Well i just got back from runnin some errands an the sweet sounds of cams at idle are becomming more prevelent,mmmwwwwaaaa! anyways Im confused as to how far I can run up the rpm band???

 

all the way?

 

[QUOTE=g5mike]
more than stock if you got new springs, retainers etc. a good deal more than stock.

 

well this is great, when is dyno time?

 

sweet man, you need to get us some video clips

 

Video will just give you sound. I'd rather see a dyno so we can see if he actually gained any power.

 

Glad to hear that you finally got the car back and are enjoying it so far. Can't wait to hear about the performance gains that you got out of those new cams.

 

what is the butt dyno estimating right now?

 

My butt is telling me the car really hauls from 3800rpm onwards the power band is so much greater now,I think if Im correct,it has something to do with cam duration,I will set a dyno appointment on Monday but my butt knows its over 20hp. On a nuber of occasions since yesterday, the extra power caught me ff guard and I had to slow dowm, cause when you hit mid 3's and up the power comes at you quick, my car runs better now than without the new cams, who would of thought, the cams definetly make the engine bay sound loud and agressive over the 4000rpm mark

 

mikes car sounds badass guys. just so aggresive. i love it

 

freaking awesome, YOU ARE THE MAN g5mike. You deserve it after the hellish months that just passed. Make sure you get some video clips of the dyno runs, and some agressive driving lol

 

Mike, when do I get to take it for a spin???

 

Great work! Congrats!

I'd love to see how compatible these would be with the stock automatic. Do you have emissions testing up there? That will be an issue here in Colorado.

 

I think as long as no cel is triggerd we should be ok on the emissions testing. At least in Indiana we dont need testing on vehicles 5 years old or newer.

 

For you guys that go to the track, you are gonna love them, there is so much power being unleshed at 4000rpm and up, and at that rpm they scream, scaring people and animals everywhere,at that rpm, I hear my engine bay now and not my catback, the intake cam is very agressive the nastier of the two cams a downpipe will compliment this big time to help get out the incomming air, just feels like the car wants to be pushed big time at this rpm range making my previous stock cams seem lame. OH something I have not mentioned I really cannot notice any loss of lowend power, Damn I need a dp and quick its gonna make this so much fun, just imagine what Hp tuners would do for this also.Can you guys believe that we all thought these would have to be tuned in and they dont, another money saver to consider, making these cams even more attractive to potential buyers, sorry to ramble on guys, its just that this mod has made me enjoy my car even more now. Damn just noticed this has turned into a 23 page thread

 

Glad to hear you're happy with the cams Mike. I know the wait was long, but doesn't it feel great when you finally get to feel what all that hard earned money and downtime spent produced in the end? I certainly think so. There's nothing like the sound of a healthy naturally aspirated engine making good power.

 

did you up the redline at all?

 

not right yet, due to all the head work, its been advised that I take it easy for 500 clicks to everything seats

 

ahhh i see. Once everything is broken in, you should be able to safely up the redline quite a bit. Do you plan on going to the track at all? I'm excited to see what you can run with this setup.

 

Track is closed right now but when I have the header/dp,balance shafts,boredTB and the tune done then I'll get some track numbers

 

theres a guy on JBO with a 2.2eco 5spd - cammed, clutch, flywheel, intake ,header some other supporting mods and street tires on steelies that ran a 14.0x at 96.xx ish

 

so maybe....13's?

 

doubt it highly, theres alot of experience NA guys on the ecotec forums and 13.8 na Is probly what a na motor could ever expect at best and thats patriot heads etc..etc..