5 replies to this topic

[cristiano1968]

Hello
I would like your opinions on the bearing oil holes as they do not line up.
The car
998cc engine has worked top notch for 30 years
I'm doing a rebuild.
Should I leave them ad they are?
Or should I enlarge them
Inevitable got acl bearings
And they don't line up.either
Any opinions thanks

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[DeadSquare]

Leave them, that is ample orifice for oil to lubricate the crank.

 

Before cars had oil pumps, the con-rods of my "straight 6 Hudson", had "Dippers", a small spoon on a 'forward facing' tube that splashed into the oil in the sump and guided enough oil to the Big-ends for some to be flung out during rotation.  A little of this alighted on the webs of the Mains and trickled to the edge of the Main bearings.

[GraemeC]

For a standard, or slightly warm, 998cc they will be absolutely fine.

 

If it were an all out race/rally monster then it would be worth fettling the block.

[Steve220]

It'll be fine. The pressure will fill the bearing nicely. I do hope those are the old bearings and not the new ones.. they look filthy!

[Lplus]

I'm not sure I'd bother for a cooking 998, though it's always nice to know that every restriction has been removed if possible.  The real question is whether you can remove every single piece of metal dust/shavings/whatever from the oilway after the work.

[cristiano1968]

Yes they are the old bearings.
I'll think I'll leave the holes as they are
It's a standard 998cc
Upgrade pistons +20
I use it to go around town
Not racing
Thanks for all your answers👍👍😁