learned something new today

[dsm_tuner260]

rod knock is a bitch. of cours the day after i order parts for my car i develop knock. i went to an autocross today it was fun made 2 runs bout to hit finish car dies coast up then have to push the car to safe stop checked the efi fuse it was blown replaced that start it up then it started knocking real loud. i was wondering when the engine would go i was expecting it last year. it did hold up like a champ with me beating on it even with 186000 miles on it. but its time to go boosted. na is weak sauce

 

[ebondragon87]

Sounds like forced upgrades :evil2:

 

[dsm_tuner260]

much pleased lol

 

[dsm_tuner260]

ok so found out what happend. the crank pulley bolt came loose i could grab it and turn it by hand so some how that bolt came loose and was only held on by a few threads. any ideas how it came loose?

 

[shaeff]

It likely wasn't torqued to 195ft lbs last time it was off.

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=EM&P=22

 

[MarkIII4Me]

Same thing happened to my second engine. Crank pulley came dethreaded at 90mph

Spun a bearing.

 

[dsm_tuner260]

i dont know for sure i have never takin that bolt out and i have owned the car and that been almost 2 years. and i have put 20000 miles on it

 

[hvyman]

Check the pulley maybe it started coming apart.

 

[dsm_tuner260]

yea i was bout to do that but it started raining again im getting tired of rain lol rained the past 3 days and they are calling for more rain the rest of the week.

 

[hvyman]

Ahh i love cali its about 75 right now lol. gl.

 

[SupraJerry]

running the dog snot out of an old engine is most likely the cause of the crank pulley coming off,
and the bearing failure.

i went to an autocross today it was fun made 2 runs............... it did hold up like a champ with me beating on it even with 186000 miles on it.

same reason why there are so many 7m haters, and the cult following on the 1jz.
people buy a cheap supra, and flog it until it fails.

mean while there are so many more people who maintain their 7m, and they will take all sorts of punishment.

 

[dsm_tuner260]

well ive had the plan to build a new 7m turbo for it this winter i just have this thing if it aint broke dont fix it. i just came to realization that it wasnt the smartest thing for me to save this engine because the previous owners didnt take care of it and it needed alot of work. when i bought the car shortly after i got it it bhg so i fixed it an everything then i talked to the previous owner that had just done and he was like i just slapped it together cheaply. i love my 7m but if i run across a jz before a 7m id take it. dont get me wrong id like to do a jz build but i would also like to have a 7m. either way every part i need always needs ordered in so it wouldnt matter which way i went id still have to wait for parts. but i just need an engine (except na want to go back to boost) soon it is my only car i have, i have to borrow a car right now till i get it on the road

 

[dsm_tuner260]

well here is a picture of the inside of my crank pulley. the key was sheared into other half was left in the cranking it tore up the crank too.

 

[hvyman]

So the key snapped in half?

 

[dsm_tuner260]

yea it went into 2 peices i dont know if it went before or after the bolt came loose but it was before that would explain why the bolt came loose.