jjcamaro02

iTrader: (34)

had to rebuild my motor 2 times. losing oil pressure after i try laying into the throttle. have had 2 different machine shops work on it. it appears the thrust bearing is being taken out.....like the crankshaft is being pushed forward and causing excessive heat and causing bearing failure.
I have a vigilante converter and it has anti-ballooning plate. i was also told that to much line pressure in the transmission could cause this problem. using factory crank, compstar rods and H series bearings. Using arp main studs and block was not line honed. Engine failed both time in about a week any feedback would be greatly appreciated.
check mods on SIG.

Firechikn

iTrader: (15)

I would of rebuilt the trans after the first one ate the thrust bearing. I've heard of it. Not much else would cause that.

jjcamaro02

iTrader: (34)

Trans was new last year FLT level 5 had no proplem until did rebuild on engine for forced induction. What would have changed ?

SincalT/A

iTrader: (16)

FLT trans are supposed to be run under stock line pressure.

black98ws6ta

iTrader: (77)

You need to have a line hone done on the mains with the studs.

jjcamaro02

iTrader: (34)

i am going to have my tuner check the line presusure setting in the computer

having it line honed

black98ws6ta

iTrader: (77)

When it comes to wiping out the thrust it is usually the converter and not transmission. What kind of spacing does the converter pads have between the flexplate when fully seated ionto the transmission?

jjcamaro02

iTrader: (34)

I am guessing about 1/4 inch, had no problem last year with same converter and trans. Rebuilt motor this year and procharger what would change with converter? I am at a loss

HUNTER02SS

iTrader: (24)

When you added the procharger did you have the converter rebuilt for it? Like other said, its probably the converter ballooning and pushing the crank, and eating the thrust bearing.

98Z28CobraKiller

iTrader: (17)

Call Greg @ FTI. They are sponsor and he will figure it out. Maybe while the car is down you can send him the converter. He'll tell you what is really in there.

The Fugitive

iTrader: (6)

+1 with checking the converter, going from N/A to FI would require a different converter. When choosing a converter that is one of the things they ask and why they need details on your set-up and goals when they make one for you. When I got mine from Yank I pretty much had to tell him everything I did with the car and what it was being made to do

jjcamaro02

iTrader: (34)

This is a vigilante converter they come with anti-ballooning plate. I was told by them run it to see were it stalls it could be changed later if need be.

I talked to Andy at FLT he is trying to help me out.

Stall change would not help the thrust bearing failure so i have been told.