Question on fitting little end bushes

[redrover]

Can anybody advise if the con rod little end bushes need reaming to size after fitting?

There is nothing in the workshop manual except the technical data stating the bore diameter (1.000 in).
I have a NOS set of bushes, but need to know what to advise my machine shop.

Thanks in advance

 

[Vern Klukas]

Are the bushes solid bronze/brass, or are they thin shell bearing like the the big ends? The former I would expect needing to be sized, the latter should just be press in and use.

Yours
Vern

 

[cobraboy]

They will need reaming after fitting. Take the rods, bushes, pistons and gudgeon pins to your machine shop and let them sort it.
Some pins are a tight fit in the piston and rotate in the bushing, some are a tight fit in the bushing and rotate in the piston. I think from memory Ford pins are tight in the bushing and the rod has to be heated to enable fitment. I think the Rover pins pivot in the bushing.

 

[redrover]

Are the bushes solid bronze/brass, or are they thin shell bearing like the the big ends? The former I would expect needing to be sized, the latter should just be press in and use.

Yours
Vern

They are in a blister pack, which I haven't yet opened, but from memory they appeared to be thin shell bearings with a split on one side near the oil hole. I'll check again.

They will need reaming after fitting. Take the rods, bushes, pistons and gudgeon pins to your machine shop and let them sort it.
Some pins are a tight fit in the piston and rotate in the bushing, some are a tight fit in the bushing and rotate in the piston. I think from memory Ford pins are tight in the bushing and the rod has to be heated to enable fitment. I think the Rover pins pivot in the bushing.

Fair advice. I'll take everything down to them. Out of interest, I've read the workshop manual which states that they the rods float on the pin, and are tight in the pistons.

 

[sdibbers]

Yes, the pins rotate in the rod little end bearingsand are a tight fit in the pistons (you’ll want to heat the pistons to fit the pins).

 

[redrover]

These are bushes I've got.

They are split, with an oil way. My suspicion is they aren't intended to be reamed out. I guess there's only one way to find out.

 

[Vern Klukas]

I think you're right. I’ve never had to size that style of bushing.

Yours
Vern

 

[redrover]

I think you're right. I’ve never had to size that style of bushing.

Yours
Vern

I'll have them put in and then checked with a bore gauge. The correct size is 1.000" so it'll be pretty easy to confirm that reading. I'll also trial fit on the pistons. This will be the third time I've put pistons on rods for a P6 2000 engine, so I'm familiar with how the float should feel.