My turn to have a dead engine..I think..
06-13-2010, 02:20 AM
#21
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Well...the numbers are in....compression numbers that is.
#1 125psi
#2 155psi
#3 55psi
#4 125psi
retest
#1 100psi
#2 165psi
#3 50psi
#4 127psi
Plans are underway to replace the motor.
No plans on figuring out if it's the head or the block. Don't care...would rather replace with a fresh engine anyway.
#1 125psi
#2 155psi
#3 55psi
#4 125psi
retest
#1 100psi
#2 165psi
#3 50psi
#4 127psi
Plans are underway to replace the motor.
No plans on figuring out if it's the head or the block. Don't care...would rather replace with a fresh engine anyway.
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06-13-2010, 12:34 PM
#28
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Yeah, as much as I'd like to build an engine or swap parts around, I don't have the time. I'll just be getting a stock replacement engine.... with under 1,000 miles on it 
Swap and go...no worry about t-belt, seals, water pump...nothing. I'll likely end up trying out a dual t-stat setup in the process. The only modification to be done to the new engine will be swapping oil pans over.
One day I'll pick up a block and stuff some rods in it and do whatnot, but right now this is my only car and I need down time to be minimum.
Swap and go...no worry about t-belt, seals, water pump...nothing. I'll likely end up trying out a dual t-stat setup in the process. The only modification to be done to the new engine will be swapping oil pans over.
One day I'll pick up a block and stuff some rods in it and do whatnot, but right now this is my only car and I need down time to be minimum.
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06-13-2010, 04:24 PM
#31
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Regarding your engine swap Doppel, why not see if you can narrow it down to valves? That might save time and $. Also, you are running pretty high boost with your setup and if you can salvage your current motor, mebbeyou could save up for a built bottom end; your rods are probably bent at that power level?
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06-13-2010, 04:26 PM
#32
Some more details on this please? I don't remember reading about headgasket swap for a coolant reroute before.
Regarding your engine swap Doppel, why not see if you can narrow it down to valves? That might save time and $. Also, you are running pretty high boost with your setup and if you can salvage your current motor, mebbeyou could save up for a built bottom end; your rods are probably bent at that power level?
Regarding your engine swap Doppel, why not see if you can narrow it down to valves? That might save time and $. Also, you are running pretty high boost with your setup and if you can salvage your current motor, mebbeyou could save up for a built bottom end; your rods are probably bent at that power level?
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06-13-2010, 06:33 PM
#34
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Yeah, just did two compression tests- no leakdown.
A local guy who is well-versed with doing swaps is going to help me (along with a few members of our local forum) and he has already offered to buy the old engine...which will help reduce the cost of whatever engine I buy. I've found one with just onder 1k miles and another with 22k miles. The only parts swapping I'll be doing is the oil pan.
The issue was sudden, but then again I hadn't done a compression check before so it could have been going on it's way out.
Fae- I'd just rather swap in a fresh engine over pulling mine, checking the head, checking the block and going from there. I know it could all be done for less monies, but it's more down time...which I don't have because this is my only car. One day I will aquire a spare block and do some rods and a few other things so I can go for the mid-300's.
It was suggested to me that I may have lefted the head a bit/stretched the head studs. While I have not heard of that in the Miata community, anything is possible and given how long that engine had been seeing 10+psi of boost and abuse. We'll see.
A local guy who is well-versed with doing swaps is going to help me (along with a few members of our local forum) and he has already offered to buy the old engine...which will help reduce the cost of whatever engine I buy. I've found one with just onder 1k miles and another with 22k miles. The only parts swapping I'll be doing is the oil pan.
The issue was sudden, but then again I hadn't done a compression check before so it could have been going on it's way out.
Fae- I'd just rather swap in a fresh engine over pulling mine, checking the head, checking the block and going from there. I know it could all be done for less monies, but it's more down time...which I don't have because this is my only car. One day I will aquire a spare block and do some rods and a few other things so I can go for the mid-300's.
It was suggested to me that I may have lefted the head a bit/stretched the head studs. While I have not heard of that in the Miata community, anything is possible and given how long that engine had been seeing 10+psi of boost and abuse. We'll see.
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06-13-2010, 07:11 PM
#36
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On the 01+ head gaskets they changed which oil and coolant holes were open. Consensus is that with the stock 01 head gaskets the coolant reroute is not the best idea. There is a big long thread on miata.net about it, with pictures of all the differences. I will see if I can find it for you later.
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06-20-2010, 11:47 AM
#40
I'm sorry to hear about your luck man. How much boost and for how long have you been running it?
Here is the m.net thread about the coolant reroute
http://forum.miata.net/vb/showthread.php?t=350182
Here is the m.net thread about the coolant reroute
http://forum.miata.net/vb/showthread.php?t=350182
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