engine break in.

hey guys wats up how long should you wait to hit vtec in a rebuilt engine? any particular amount of miles? its got a hundred miles of normal driving on it already? all help would be apprieciated thanks for your time.

I've personally never heard of any break in period for VTEC...i can't see why there would be

ok thanks. i was just wondering cause i so far other than when i seated the rings i havnt had it past 4000rpms stock redline is 8200 but its built for 10000. is it too soon to take it to 10? or even stock redline? someone said i should wait for about 1200 miles to redline it.

there are MANY different therorys on this... i personally believe 500 miles is enough progressivly going higher in the RPMs... i would also make sure youre using conventional oil for the break in, and switch to synthetic after.

out of curiosity.. what exactly has been done to your engine?

500 miles is the general rule.
It has nothing to do with it being a V-Tec.
It's the rings getting seated into the cylinders.
Use a light weight oil, keep the rpm's down,
and don't cruise for long time periods at a consistent speed,
for the first 500 miles.:smokin:

well to make a long story short i dropped a valve the stock b18c due to me over revving with a chipped ecu. about 11000. it lasted for almost a year then one day boom :frown: so after that i bored the block over .30 installed eagle block qaurd. eagle h-beam conneting rods. eagle crank. king racing bearings. with 12:1 compression pistons. ferrea 1mm oversize valves with ferrea springs and ti retainers. cai, obx header and muffler, custom 2.5 exhaust, rc 500cc fuel injectors. skunk 2 cam gears. set of skunk 2 stage 2 cams shafts, which i will let someone put them in and adjust the cams gears for me when i feel the engine is properly broken in. a little more. waiting or my s300. and high flow fuel pump to get in. i thing thats about at. . .. .

I'm not up to date on NA stuff, but on a few boosted applications, i've seen the Eagle cranks let go...something to be cautious of

awe man. . . are you freaking serious? you think i should change it out while i still got under 500 miles on the car? i hope it stays together. :eek: