Oh **** **** **** no no no ahhhggggg ****!!!
Maybe you've been there, maybe you lead a perfect life and haven't. I clearly don't.
I'll try to include all the info I know about what lead to the bearing crush because I see guys getting flamed for not providing info. If you don't want to read all this **** then just look at the shinny pics and speculate away. Or don't.
I am hoping you experienced guys can lead me to the answer so I don't repeat. Thank you in advance.
First the gratuitous pride shot: '02 VVT motor stock internals, BRP kit stock pulleys 8 PSI max, TRDIC, RB header & exhaust, stock ECU, 91 octane.
This all started because the shitty Mazda water pump had a failed bearing at 80k. I tore down the front of the engine and replaced the WP,TB, and seals. While I had it apart I installed a snazzy 5X Racing timing wheel and set it to factory.
Well I fucked up the crank seal install. So because I had left off all the covers I just set the crank @ TDC and clamped the belt to the cam pulleys and pulled the stuff off the crank snout so I wouldn't have to worry about the VC and gasket. I had to do this 3 times
After a combo of JB weld and a Redi Sleeve the seal stop gushing. So I put it back together and eyeballed the timing wheel to ~ factory timing. (I had marked the HB for the extremes and center of the wheel's movement)
I went for a fast as hell drive. The car was screaming good and my hard on was enormous. At about 100 miles I got a FLASHING CEL I limped it into a station and checked the oil, let it cool etc. then cruised it to the nearest town with a O'Rielly's and borrowed their scanner ( cool guy there who used to race sports cars at Hallett with his dad) which showed P0012-intake cam too retarded; and P0300-random misfire
I cleared the codes and cruised the car the ~75 miles home with no issues other than the CEL was back within 5 miles.
I pulled it into the garage and checked the timing I honestly don't recall where it was as I received some crappy news and had a few beers that evening.
Next morning I Advanced the wheel about half it's travel and checked timing which showed the left mark @ ~ 5* BTDC 'that's wieird' i thought and proceeded to advance the wheel the remainder of it's +- 6* travel and as I was tightening the HB bolts snapped on off. **** again.
I had family coming later that morning and wanted the car running to show it off. **** you...like you've never done it. So after checking timing again and it being now ~8* BTDC I went for a drive.
I did hear a new racket from the motor and KNEW I should just limp it home but my pride and frustration got the best of me and I revved it to 7k
and the #1 rod bearing punished me hard.
As I was pulling the motor apart I found the TB to be loose but had not jumped any teeth.
Question: With 1/2-3/4" play in TB between the wheels can the timing vary without jumping a tooth? And if so would this cause the codes and possible detonation?
All crank journals have some amount of grooving, it is worse at #1 main and progressively better at #5. Did the missing 5.9 gram bolt head throw the crank snout out of balance and cause the high RPM destruction?
OR; Did the crap from the (timing) destroyed rod bearing ooze thru the oil galleys and scour the other journals?
OR; has there been an oiling issue for some time undetected without a proper gauge?
OR; something else? Fresh Mobile1 BTW
PS Vlad (18PSI) is sending me a good crank and rods (of which I plan to use one)