4K mile 0 break in findings
#1
4K mile 0 break in findings
i took apart my engine due to a failure of my patch job on my water jackets, this engine had about 20 minutes of idling time then boosted immediately for short periods on initial test drive then boosted hard from there on out.
since some people think it is absurd to have short to no break in times i thought i would post my experiences since most people will not do this or tear apart their engine after such a short period to see the results.
this is in no way undermining those who prefer long break ins but it may show that it is not unholy practice either. please note that i do not condone boosting a fresh rebuild either.
this engine was also run striclty on cheap *** Wal-Mart 2 stroke pre-mix after an initial synthetic blend for the first week of driving.
both rotor housings look to be in their original near pristine condition.
![](http://img203.exs.cx/img203/8645/picture0318sb.jpg)
![](http://img203.exs.cx/img203/1037/picture0322vu.jpg)
rotor bearings in original condition as well as eccentric shaft even after a front cover o-ring blow out, as well as stationary gears.
![](http://img203.exs.cx/img203/3113/picture0336hy.jpg)
![](http://img203.exs.cx/img203/3353/picture0343kx.jpg)
there was no metal debris in the oil but some small amounts of coolant from the housing failure.
it was even past due for it's second oil change by a few thousand miles because i was battling the coolant leak into the cooling system and i knew it would need to be torn down soon.
since some people think it is absurd to have short to no break in times i thought i would post my experiences since most people will not do this or tear apart their engine after such a short period to see the results.
this is in no way undermining those who prefer long break ins but it may show that it is not unholy practice either. please note that i do not condone boosting a fresh rebuild either.
this engine was also run striclty on cheap *** Wal-Mart 2 stroke pre-mix after an initial synthetic blend for the first week of driving.
both rotor housings look to be in their original near pristine condition.
![](http://img203.exs.cx/img203/8645/picture0318sb.jpg)
![](http://img203.exs.cx/img203/1037/picture0322vu.jpg)
rotor bearings in original condition as well as eccentric shaft even after a front cover o-ring blow out, as well as stationary gears.
![](http://img203.exs.cx/img203/3113/picture0336hy.jpg)
![](http://img203.exs.cx/img203/3353/picture0343kx.jpg)
there was no metal debris in the oil but some small amounts of coolant from the housing failure.
it was even past due for it's second oil change by a few thousand miles because i was battling the coolant leak into the cooling system and i knew it would need to be torn down soon.
Last edited by RotaryEvolution; 02-06-05 at 06:13 PM.
#7
the guy who shipped me the front iron packages like a dufus and they crashed into each other and broke a seal land, with a battle of 2 evils i figured it was better to try and patch the broken land than use the other warped plate which i "thought" was giving me my internal coolant leak woes when in fact it was the rotor housings. i am reusing the original warped plate because it is still barely within warpage tolerance and ported to match my engine already. the rotor housings will make nice displays for someone.... they are table toppers now(electrlysis ate the **** outta the coolant passages right above the exhaust port on one housing and above the trailing spark plug on the other).
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#9
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(electrlysis ate the **** outta the coolant passages right above the exhaust port on one housing and above the trailing spark plug on the other).
oh i see.... so coolant just sat in the water jacket for a while and ate it??
oh i see.... so coolant just sat in the water jacket for a while and ate it??
#11
Lives on the Forum
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Um, not to be an *** about it, but who said you'll ruin your engine without a proper break-in?
What happens it that your seals can't mate properly, and you get excessive blow-by.
Excessive blow-by means lower compression.
Lower compression means lower power.
So, the engine will run, but it will not have the best compression and the best power.
About the only thing that can go wrong is bearings can get ruined.
If you're using used bearings, this possibility drops to nil.
-Ted
What happens it that your seals can't mate properly, and you get excessive blow-by.
Excessive blow-by means lower compression.
Lower compression means lower power.
So, the engine will run, but it will not have the best compression and the best power.
About the only thing that can go wrong is bearings can get ruined.
If you're using used bearings, this possibility drops to nil.
-Ted
#13
i am legendary
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Originally Posted by Adam
Karack why does the housing have only one sparkplug hole?
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