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.



rotor bearings in original condition as well as eccentric shaft even after a front cover o-ring blow out, as well as stationary gears.



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.

 

those rotor housings, i'm saddened to say are going to be used in displays now, because the original fucktard i bought car from did not service the cooling system regularly.

what a waste of near perfect T2 housings...

 

How are the apex seals? Any abnormal wear or did they wear fairly well? Still all well within spec I assume?

 

perfectly even all the way accross but there was some corrosion from the coolant that didn't get removed when i stored the engine for the last couple of weeks.

 

please excuse the dirty fingernails...


still barely out of new spec, the only noticable wear is from where the rotors scuffed the sides and there is no measurable wear there yet.

 

So , why did the o ring blow out?

James

 

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).

 

how were the housings messed up due to lack of cooling system maintainace? they look purdy still......

 

(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??

 

stale coolant or weak mixtures begin to become acidic and eat out the aluminum like a thousand drills drilling from the inside out.

 

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

 

Karack why does the housing have only one sparkplug hole?

 

Both of them have two. See the smaller hole about the larger one? That's the other spark plug hole.

 

Karack, Could that have been from ethylene glycol with Phosphates?? You being a Caddy mech will be familiar

 

i didn't bother testing the coolant when i removed the engine the first time, i just remember that it looked a bit dilluted because the previous owner said he had an overheating problem and had added water to the system.