what broke in my motor?
#1
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Location: Fredericton, NB
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what broke in my motor?
https://www.miataturbo.net/showthrea...gt3076r&page=2
I bought this last fall
it definately wasn't drop in and go... there were no gaskets installed anywhere in the motor.
I took it all apart, took out everything but the oil pump, rods and pistons
and managed to get it running in the car this spring.
in the middle of a run i hear hesitation and pull over...
now there is a knocking noise in the motor....towed the car home.
any ideas on where to start looking?? its still running on all 4 cylinders and everything sounds normal while cranking it over. i only hear the knocking once it fires...
ideas?
i was logging while this happened and everything looks good in the log.
also have a very conservative spark map (according to rafa, car wouldn't even be on the road without him)
thanks!
I bought this last fall
it definately wasn't drop in and go... there were no gaskets installed anywhere in the motor.
I took it all apart, took out everything but the oil pump, rods and pistons
and managed to get it running in the car this spring.
in the middle of a run i hear hesitation and pull over...
now there is a knocking noise in the motor....towed the car home.
any ideas on where to start looking?? its still running on all 4 cylinders and everything sounds normal while cranking it over. i only hear the knocking once it fires...
ideas?
i was logging while this happened and everything looks good in the log.
also have a very conservative spark map (according to rafa, car wouldn't even be on the road without him)
thanks!
#5
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Location: Fredericton, NB
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just checked compression
170-140-90-150
i'm on a crappy laptop in the drivers seat with a tiny shift key and i always mess my typing up when i use it, that and the finger i use is busy stretching out your sister... my apologies hustler, i do what i can.
170-140-90-150
i'm on a crappy laptop in the drivers seat with a tiny shift key and i always mess my typing up when i use it, that and the finger i use is busy stretching out your sister... my apologies hustler, i do what i can.
#9
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Location: Sunny Spanish speaking Non US Caribbean
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I think you're assessment of a bearing failure will turn out to be right. I'm curious to know about your pistons and rods.
Please keep me posted.
Let me know how I can help you.
#10
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Join Date: Aug 2007
Location: Fredericton, NB
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I guess i know what i'm doing this weekend.
the compression numbers really surprised me too! looks like the whole thing is coming apart and at the very least being reassembled. I'm glad my spare engine didn't end up selling now.
live and learn...for anyone reading this...don't buy a motor assembled by someone else unless you know for sure its professional and warrantied.
the compression numbers really surprised me too! looks like the whole thing is coming apart and at the very least being reassembled. I'm glad my spare engine didn't end up selling now.
live and learn...for anyone reading this...don't buy a motor assembled by someone else unless you know for sure its professional and warrantied.
#12
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Location: Sunny Spanish speaking Non US Caribbean
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About the WOW: in Spain we have a saying: "que me quiten lo bailao". It translates to something like: no one can take away the fun I've already had!
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