twosmoke Posted December 18, 2009 Share Posted December 18, 2009 . Quote Link to comment Share on other sites More sharing options...
Simon Posted December 18, 2009 Share Posted December 18, 2009 For a start, don't listen to buyers. No matter what they are buying. That's just the compression of the rotor that's making it hard to turn and then turn its self backwards. If anything its a good sign. Quote Link to comment Share on other sites More sharing options...
CXGPWR Posted December 19, 2009 Share Posted December 19, 2009 ^ I would have to concur with that man, remove spark plugs & turn over again so compression aint going to try to turn the rotor back to orignal position. Also to free it up a touch removed spark plugs & give a slight spray with crc or wd 40 or nice thin oil an turn over by hand Quote Link to comment Share on other sites More sharing options...
Simon Posted December 19, 2009 Share Posted December 19, 2009 Some people also put a decent amount of oil down them if they are going to go in storage. Stops the seals going dry / rust etc. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted December 20, 2009 Share Posted December 20, 2009 If it has no zhorst manifold on it rotate it clockwise, and shine a torch in the zhorst ports. As the apex of the rotor passes the port, you should see the apex seal. when you can if you push it, it should spring back, and it should be complete ie not broken. Do this three times for both banks, and then you'll know for sure that the apex seals aren't blown. Does sound like it has sweet compression though. But it can have one blown seal, and still have compression on the other bank/the one "chamber" which still has seals. Quote Link to comment Share on other sites More sharing options...
SHGWAG Posted December 22, 2009 Share Posted December 22, 2009 "Fresh rebuild" means nothing, especially if your housings or plates are chipped/scratched/worn. Runamuck is correct. However you still wont be able to tell if the side or corner seals are any good. Best way to check condition without stripping it down is to chuck in in a car & start it / compression test it. Quote Link to comment Share on other sites More sharing options...
twosmoke Posted December 23, 2009 Author Share Posted December 23, 2009 . Quote Link to comment Share on other sites More sharing options...
Simon Posted December 23, 2009 Share Posted December 23, 2009 I cant get an accurate compression reading by turning it over by hand? Nope. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted December 23, 2009 Share Posted December 23, 2009 Took spark plugs out and sprayed some crc down the holes, no longer feels sticky at all, has all the standard turbo gear bolted up to it at the moment and is in a car, so will unbolt and try pushing the apex seals at some stage. I can get my hands on a compression tester, but will have to get the starter motor going yeah? I cant get an accurate compression reading by turning it over by hand? also, you want to remove the shrader valve from the end in the comp tester if it has one. Or alternatively hold the release button down while you comp test it. For each bank the needle should rise 3 times as each of the three sides of the rotor pass their compression cycle. If it only rises once, you have a blown apex seal. If only twice you have a blown side seal. Do this for both banks. if you dont remove the valve before testing you'll only get the compression reading from the best chamber. Quote Link to comment Share on other sites More sharing options...
danger Posted December 24, 2009 Share Posted December 24, 2009 Sounds sweet as to me. put a bit of oil down the spark holes if just storing the motor and if in a car dont leave water galleries full if sitting forever. Quote Link to comment Share on other sites More sharing options...
danger Posted December 24, 2009 Share Posted December 24, 2009 Only reason it'd be bad to be sticky would be if the endfloat was too tight or the rotor or stat gear bearings were nipped up but then it'd just be stiff to turn and certainly not spin back on itself. Throw the fucker on trademe. Quote Link to comment Share on other sites More sharing options...
twosmoke Posted December 24, 2009 Author Share Posted December 24, 2009 . Quote Link to comment Share on other sites More sharing options...
danger Posted December 24, 2009 Share Posted December 24, 2009 Sounds like it'd make an interesting car aye. sounds like 2500 is cheap though. could flick the motor and box for that depending on specs. should sell motor and box seperate then sell BMFR as a rotary project or rally car project Quote Link to comment Share on other sites More sharing options...
twosmoke Posted December 25, 2009 Author Share Posted December 25, 2009 . Quote Link to comment Share on other sites More sharing options...
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