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engine break in.


b18ceg
12-10-2007, 02:43 PM
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.

Schister66
12-10-2007, 11:27 PM
I've personally never heard of any break in period for VTEC...i can't see why there would be

b18ceg
12-11-2007, 08:10 AM
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.

Greenblurr93
12-11-2007, 10:52 AM
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?

jclark
12-11-2007, 02:11 PM
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:

b18ceg
12-11-2007, 02:41 PM
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. . .. .

Schister66
12-11-2007, 03:50 PM
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

b18ceg
12-11-2007, 05:14 PM
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:

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