Thrust bearing modification (crankwalk prevention)

[DSM Jeff]

Originally Posted by sschambers

I don't see any problem in just replacing stock main bolts with stock bolts (or re-using them if they're fine). If you did an align hone every single time you re-used or replaced main bolts, on any motor, people like us would have a VIP card for our favorite machine shop....Or a "after every 5 hones, get 1 free" card

I figured that but had to ask the dumb question, lol. I'll price out some bolts when I'm down at JNZ and see what they run. I just want to try this and see how it goes, only thing, not my engine. Thanks for your help. I'll update if I do end up doing this.

[4g64fiero]

SSchambers,

Nice thread bro. I just rebuilt my 95 7 bolt but failed to align the girdle properly causing a thrust bearing failure within the first 1500 miles. I was wondering if you could delve more into the process of aligning the girdle properly. Is it just as simple as torqueing the girdle down while under load from the clutch being pressed? I assume it would be critical to have a properly adjusted clutch before persuing this process.

Thanks in advance.

[4g64fiero]

Any more details?

[MidShipCivic]

Originally Posted by Artago

Hi all. I've had my motor rebuilt twice and it's walked twice.

Right now it's at 0.009" so time is ticking. What I would like to know is.... has this mod had any success? Basically, I want an update.

I've been reading everything I can about this issue including magnus' oil passage/squirter/lack of flow theory and it seems like that this mod could aid in getting more oil to the thrust bearing.

I'm going to be replacing my bearings soon and would like to know how this mod has held up in your car? Maybe I'll try it myself.

Thanks,

Tom

You then had someone build your motor the wrong way TWICE then.

Was this on the same motor and crankshaft?

7 bolt 4g64 I didn't do any of these procedures and my motor perfect...

[Artago]

Originally Posted by MidShipCivic

You then had someone build your motor the wrong way TWICE then.

Was this on the same motor and crankshaft?

7 bolt 4g64 I didn't do any of these procedures and my motor perfect...

That's what I'm thinking. I need to replace the bearings but i don't want to remove and disassemble the whole motor. I'm looking for a good write up on how to do it with the motor in the car. Any advice / links?

Tom

[MidShipCivic]

Originally Posted by Artago

That's what I'm thinking. I need to replace the bearings but i don't want to remove and disassemble the whole motor. I'm looking for a good write up on how to do it with the motor in the car. Any advice / links?

Tom

If you have excessive end play you don't reuse that crankshaft the thrust surfaces are uneven/rippled.

You'll have to remove the motor for that issue.