11 replies to this topic

[Spackaveli32]

My main bearings are not aligning with my engine block. What is the correct why to fix this issue? Do you recommend marking the block and grinding it back? Thanks in advance.

 

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[mini13]

That's not that unusual on production engines, yeah, you can fettle it to fit.

[Spider]

As Mini13 mentioned, not unusual.

 

I correct them using a file only. While it maybe tempting to pick up the Die Grinder or Dremel, on slip with these wonder tools and you'll be looking to have the block decked on the sump rails and line bored to fix that millisecond slip up.

[DeadSquare]

Don't worry about it.

 

You'll get ample oil through those orifices.

[cal844]

Gently file the bearings out to match the oil way

[Dusky]

Gently file the bearings out to match the oil way

I cried a little reading this.

[cal844]

Gently file the bearings out to match the oil way

I cried a little reading this.

I've built various engines and they all have had the bearing shells bored to match the oil drillings on the block (i do remove the bearing shells from the engine to file them out, returning them every few strokes of the file.) Yes its time consuming but Filing the hole larger, to match the oil drilling is an accepted peactice for longevity of the engine. and also what Moke Spider would do, so I must be doing something right

Edited by cal844, 16 July 2019 - 09:44 PM.

[KTS]

..presumably if you open up the oilway in the block to match the oilway in the shell you only need to do it once ?

[Dusky]

Gently file the bearings out to match the oil way

I cried a little reading this.

I've built various engines and they all have had the bearing shells bored to match the oil drillings on the block (i do remove the bearing shells from the engine to file them out, returning them every few strokes of the file.) Yes its time consuming but Filing the hole larger, to match the oil drilling is an accepted peactice for longevity of the engine. and also what Moke Spider would do, so I must be doing something right

But Chris files the block.

Why on earth would you distort a bearing, reduce its load bearing capacity and embed it with harder metal before fitting it while you could just modify the block...

[Spider]

Yes it is the block I do file, but for most run of the mill jobs, the bearing could be filed I guess. Want to be careful though as you don't want any of the metal from the backing to get embedded in to the softer bearing material.

 

The advantage of doing the block is next time around, just slip a set of shells in and their done.

[DeadSquare]

Oh, come on chaps, if it worked before,  do you need to fix it ?

 

The holes are that big to allow for some misalignment.

 

If you have ever had the bad luck to have the oil pressure gauge pipe crack, at 50 psi, an awful lot of oil gets out of that tiny pipe in a very short time.

 

If the sight of an oval hole offends you, chamfer the block with a countersink.

Edited by DeadSquare, 21 July 2019 - 08:18 PM.

[MiniMadRacer]

On a race engine pulling some high sustained revs, I would gently file the block to match the shells as has already been stated by others. On a road engine being driven "normally", there is no real need as enough oil will be able to get to the shells