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| Let's get Technical! Discussion for hardcore in-depth motor heads! |
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#1
12-10-2007, 02:43 PM
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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.
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#2
12-10-2007, 11:27 PM
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Re: engine break in.
I've personally never heard of any break in period for VTEC...i can't see why there would be
__________________
2015 DGM STi - 2006 SGM STi - 1999 Built/boosted GSR
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#3
12-11-2007, 08:10 AM
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Re: engine break in.
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.
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#4
12-11-2007, 10:52 AM
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Re: engine break in.
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?
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#5
12-11-2007, 02:11 PM
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Re: engine break in.
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. 
__________________
Jim C.
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#6
12-11-2007, 02:41 PM
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Re: engine break in.
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
 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. . .. .
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#7
12-11-2007, 03:50 PM
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Re: engine break in.
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
__________________
2015 DGM STi - 2006 SGM STi - 1999 Built/boosted GSR
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