2 motors same set of problems! help!
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From: georgia
2 motors same set of problems! help!
motor #1
CTR pistons in a b18c bored to 81.5 honda rings
all seals in head replaced
fully balanced and broken in on c12 only, along with a wideband to moniter a/f
after first 20 miles started smoking. got worse and worse only when doing one specific thing-coasting down in gear then punching the gas. big blue smoke cloud out the back
motor #2
b18c bored to 81.5 pr3 pistons. hastings rings
head was left stock
fully balanced and broken in on 93 only
after 100 miles notices smoke out thetailpipe during the same conditions as motor #1. this motor was setup by a different person and was machined at a different machine shop. its at 400 miles now, and looking like its getting worse, just like motor number1
the only difference i can see so far is that motor #2 is holding ~530 vaccum at a warm idle where motor#1 was holding ~430 at idle
motor#1 was found to have a blow headgasket later, showing compression results of 290,230,225,240 with the bad headgasket in place still
can somebody please put an end to all these "guesses" about how the oil is getting out and provide some detail as to why its happening
CTR pistons in a b18c bored to 81.5 honda rings
all seals in head replaced
fully balanced and broken in on c12 only, along with a wideband to moniter a/f
after first 20 miles started smoking. got worse and worse only when doing one specific thing-coasting down in gear then punching the gas. big blue smoke cloud out the back
motor #2
b18c bored to 81.5 pr3 pistons. hastings rings
head was left stock
fully balanced and broken in on 93 only
after 100 miles notices smoke out thetailpipe during the same conditions as motor #1. this motor was setup by a different person and was machined at a different machine shop. its at 400 miles now, and looking like its getting worse, just like motor number1
the only difference i can see so far is that motor #2 is holding ~530 vaccum at a warm idle where motor#1 was holding ~430 at idle
motor#1 was found to have a blow headgasket later, showing compression results of 290,230,225,240 with the bad headgasket in place still
can somebody please put an end to all these "guesses" about how the oil is getting out and provide some detail as to why its happening
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Joined: Aug 2002
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From: ashEVILle, NC, USSR
Re: 2 motors same set of problems! help! (drew96EJ)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drew96EJ »</TD></TR><TR><TD CLASS="quote">both motors had a hard break in
the final ignition timing on motor#1 was ~18 degreeson c12
</TD></TR></TABLE>
That's pretty retarded, and on high octane racegas. FInal timing in the stock ECU is 28 degrees, and the c12 means you should advance the timing a bit more added CR nonwithstanding. I think you ran the cylinders lean, regardless of how the wideband lied to you, because you were blowing still burning fuel/air past the exhaust valve with that ignition timing.
the final ignition timing on motor#1 was ~18 degreeson c12
</TD></TR></TABLE>
That's pretty retarded, and on high octane racegas. FInal timing in the stock ECU is 28 degrees, and the c12 means you should advance the timing a bit more added CR nonwithstanding. I think you ran the cylinders lean, regardless of how the wideband lied to you, because you were blowing still burning fuel/air past the exhaust valve with that ignition timing.
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