rebuilt motor, still smokes
11-19-2008, 04:10 PM
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Re: rebuilt motor, still smokes
ok valves are adjusted, as far as the tune goes its the same exact setup as before the rebuild and i just replace everything with same parts, the block i got off here and it was already honed and checked and all that got stuff. i just think i ran it to hard without proper breakin and it caused the rings to not seat right.
11-19-2008, 05:04 PM
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Re: rebuilt motor, still smokes
Blue smoke is oil. You probably were running too rich after the rebuild, causing ring wash, guess what.. now you have to overbore and hone again, get oversized pistons to match the new bore.
You dont -ever- break in a rebuilt motor unless it is ON the dyno or have a wideband attached for a proper street tuning. From idle to partial throttle you tune it so that your A/F ratio is right where it should be. From there, drive keeping within the "low" maps to a dyno for WOT tuning.
You don't just slap on an unknown ECU/tune with a rebuilt, it's posted all over the place. I may sound like I take it personal, but damn, it's all over the place from those that ARE knowledgeable. So, I just don't understand why some insist we haven't a clue when we give advice. Maybe I will open a shop around here despite the area being over-saturated with niche market business... looks like business would be fairly decent.
Sorry to break the news to you, but, this is very likely what happened. Do a leakdown test (and throw a compression check in there more for shits and giggles) and find out your answer for sure.
That or the rebuild was shit with improper clearances.. tough to say, I didn't build it to know for certain.
You dont -ever- break in a rebuilt motor unless it is ON the dyno or have a wideband attached for a proper street tuning. From idle to partial throttle you tune it so that your A/F ratio is right where it should be. From there, drive keeping within the "low" maps to a dyno for WOT tuning.
You don't just slap on an unknown ECU/tune with a rebuilt, it's posted all over the place. I may sound like I take it personal, but damn, it's all over the place from those that ARE knowledgeable. So, I just don't understand why some insist we haven't a clue when we give advice. Maybe I will open a shop around here despite the area being over-saturated with niche market business... looks like business would be fairly decent.
Sorry to break the news to you, but, this is very likely what happened. Do a leakdown test (and throw a compression check in there more for shits and giggles) and find out your answer for sure.
That or the rebuild was shit with improper clearances.. tough to say, I didn't build it to know for certain.
white smoke is oil not blue smoke buddy
11-19-2008, 05:05 PM
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11-19-2008, 05:06 PM
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11-19-2008, 05:12 PM
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Re: rebuilt motor, still smokes
heres another idea on how you fucked up..... if you used a stone hone or the guy who honed it used one. he could have honed it out of round.... ie no longer a cirlce..... happens when people hone for too long trying to get scaring out of the cylinder wall.
does your car make a "dewwwwsshhhhee" sound when running?
does your car make a "dewwwwsshhhhee" sound when running?
11-19-2008, 06:04 PM
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Re: rebuilt motor, still smokes
Oh boy.. moving onto someone that brings something worthwhile to the table now..
A possibility, especially if say, a K-line or similar isn't used. Then, does the machinist have at least an OD, V micrometer and bore gauge? No? I wouldn't go to them.. to say the least.
Either way, OP, you pretty much know what to do and/or how to find your issue. I wish you luck with it..
Originally Posted by weldmatic
heres another idea on how you fucked up..... if you used a stone hone or the guy who honed it used one. he could have honed it out of round.... ie no longer a cirlce..... happens when people hone for too long trying to get scaring out of the cylinder wall.
Either way, OP, you pretty much know what to do and/or how to find your issue. I wish you luck with it..
11-21-2008, 02:18 PM
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Re: rebuilt motor, still smokes
IMO. When starting a FRESH motor up.
Stock injectors. Stock cams. Stock ECU that won't go crazy about sensors (i.e. obd2).
Washing the cylinders out sucks on a brand new motor.
Stock injectors. Stock cams. Stock ECU that won't go crazy about sensors (i.e. obd2).
Washing the cylinders out sucks on a brand new motor.
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