eyecandy

iTrader: (19)

First I am sorry for the Bible below,

Well I just finshed reading about 20 or so different threads about Seized motors. And i could not find anything that related to what happened to my friends car. Well let me begin, Its a series 5 N/A.

Sunday he was driving his car, IN TRAFFIC, and it began to over heat. He pulled over and parked as soon as he could, with the needle just about pegged. He leaves his car and we walk around a car show for a few hours. When we go to leave he starts his car up no problem it was probably running for 40-60 seconds and he goes to put the clutch in and the RPMS drop, and the car dies. He tries to refire it and it will not turn over, the starter has a real weak click/tick. We then try to pop it in gear and nothing happens.

So we pop the hood and try to make sure all the connects are good. And we find the gound for the starer just lhying there.Then we finally break down and call the AAA. He comes a checks the battery which it is dead becasue of a poor connect and could not recharge. So we try to jump it and the motor/belts move like a 1/4-3/4 of an inch. Finally we just get it towed back to his house. So we check the starter by hopping the seloniod and the starter spins and is fine. Try starting it a few more time and the belts/motor moves maybe a 1/4 inch everytime.

Everything form the battery to the starter checks out perfect! we try to rotate the engine by hand and it will not budge.

After reading all the threads I find out that it might be carbon lock(found alot), or lodged apex seal(which i found very few). And i only find out now that you want to try to rotate the engine the opposite direction

My real question is if it is Carbon lock, would it just lock up while it is running? Or would it happen while it is sitting, I could not find anything about while it was running. Or would that mean it was an Apex seal? He did not hear any weird noises before it died. I guess the only thing to do is now is try ATF and if that does not work pull apart the engine. Could it be anything a else??

Any help would really be appreciated, and i am sorry for the very long read!

theonlygreat

over heating your rotory is grounds for expulsion!

but seriously, over heating is the worst thing you can do to your rotory powered rocket(or even you piston propelled POS). it could be possible that the motors assembly has warped to a point that it cannot rotate. by "We then try to pop it in gear" does that mean that you tried to compression start it? if it does then did the tires just lock up when you popped it in gear or did it just not start the car?

eyecandy

iTrader: (19)

Not firmilar with compression starting it.

When we tried to pop it in gear the rear tires locked up and would not move. I was reading about the Intermedite housing be warped, and i heard that it takes alot to do it, altough it could have happened. What I do not under stand is the fact that AFTER it had overheated or whatever, the engine RAN for about a minute before it locked up. Can that happen with a warped rotor or housing? Because there was no problem starting it the first time, just turn the key and Vrooom!!

The only thing i can think of doing is to put ATF in it and try to pop it into reverse down a hill to maybe loosen it up. Would it be wise to pull the engine fuse when doing it?

eyecandy

iTrader: (19)

Hmmm could it be a bearing?

now

iTrader: (1)

if its a rotor bearing you will find that you can turn
the front pulley a little back and forth, if its the main
bearings it will not move at all.
I am guessing that it over heated and caused the
bearings to run dry due to oil burn off on the bearing
surface. it started and ran a bit until the molten
bearing material welded the shaft to the bearing.
if the motor will not turn, pull off the front pulley, then with the
front bolt threaded back into the shaft, see if you can pull
the shaft from front to back this will tell you if if any of the
bearings are truly stuck or not.
only do this if it for sure will not turn as the needle
bearing will drop if it does move, then you will have to
remove the front cover to put it back in place.
my 2 cents
matt

eyecandy

iTrader: (19)

Thanks for the info Matt, i think i will try that after the ATF and reverse down a hill.

So probably anyway you look at it, it is going to need a rebuild. Unless a mircale happened and it was carbon lock and for some very odd reason it did not ruin the housing......

The_7

im not as knowlageable as some of the people here but i doubt it is warpage given the situation you described. it could be the bearings or carbon lock. for the carbon lock you could try atf or mmo but instead of going in reverse downhill, use a high gear 3rd or higher if your trying to break it free. (put the mmo or atf in first to help). when your trying to turn the engine by driving the wheels the gear ratios work backwards so trying to break the engine free going down a hill 5th gear would put the most torque on the engine. so i would probly do the mmo/atf and downhill thing first, and if that doesnt work check the bearings.

eyecandy

iTrader: (19)

The 7, I was reading that if it is carbon lock you want to reverse the direction of the engine, if not you can force the carbon to damage the rotor housing. What is MMO?

When we tried to pop it we had it in 3rd gear, but it did nothing.

now

iTrader: (1)

I am almost sure its not carbon locked I don't think
i have ever heard of a motor that was
running then slowly quitting due to carbon, but there is
always a first time.

matt

eyecandy

iTrader: (19)

Well i would have never thought of that, so i guess I will try that after the ATF..

eyecandy

iTrader: (19)

Is there any other opinons out there? Or was it all just about covered?