Which conrods

[mmt 15]

Hi Guys 

I have some unknown conrods. They are much similar to the Gti6 ones same length and looks the same.  However the pin dia. Is not 22 mm as on the gti6 ones but Only 20 mm. 
 

it says 295 and AT on them.
 

I Only have two of Them and need two more. 

Edited September 19 by mmt

[SRDT 254]

Are they aftermarket forged and fully machined rods or stock looking ones?

[petert 641]

GTi6 is pressed pin. Are yours pressed or floating (bushed).

[mmt 15]

They look oem stock. Can’t upload pictures. They look very similar to the gti6 ones. 
 

I Only have the rod no pistons. Planning on going full floating 20 mm pin. There I a bronze bushing - 20 mm in dia, my pins (Ross pistons) fit perfectly. 

Edited September 19 by mmt

[SRDT 254]

They are probably stock rods that had bushings pressed on to use forged pistons with floating 20mm pins.

 

 

There is no PSA rod this size with fully floating piston pins.

Edited September 19 by SRDT

[petert 641]

Nothing sounds good about this. I assume the two rods you have are 2nd hand? In which case you'd need new bolts and they'll need a close & hone, if you're going to consider them "new". In which case, you may as well bush four GTi6 rods, fit with new bolts and close& hone anyway.

[mmt 15]

8 hours ago, SRDT said:

They are probably stock rods that had bushings pressed on to use forged pistons with floating 20mm pins.

 

 

There is no PSA rod this size with fully floating piston pins.

 

8 hours ago, SRDT said:

They are probably stock rods that had bushings pressed on to use forged pistons with floating 20mm pins.

 

 

There is no PSA rod this size with fully floating piston pins.

Is there any psa with 20 m pin dia? They look very factory. Not sleeved or new bushing. No drilled Hole for Oil. 

[SRDT 254]

The only PSA rods with this length are from the XU10J4RS and XU10J4R (similar but drilled on the big end).

Not having the oil hole means they are probably not stock rods.

[mmt 15]

12 hours ago, SRDT said:

The only PSA rods with this length are from the XU10J4RS and XU10J4R (similar but drilled on the big end).

Not having the oil hole means they are probably not stock rods.

Thanks mate. 
would you recommend stilling holes for better oiling ? 
 

 

[SRDT 254]

On OEM applications 100%. On a race engine it depends, the rod could be "retired" before the bushing wears out and maybe that's why your rods are not drilled.

 

In any case Peugeot did ask to do it on the XU9JA rods for Gr.A racing.

[mmt 15]

11 hours ago, SRDT said:

On OEM applications 100%. On a race engine it depends, the rod could be "retired" before the bushing wears out and maybe that's why your rods are not drilled.

 

In any case Peugeot did ask to do it on the XU9JA rods for Gr.A racing.

Thanks. I’m not sure I understand your post - lost in translation. What do you mean by “retired”. It is for use in a race engine. My old rods had a 4 mm Hole - 3mm would be what I Would put into the smaller pin diameter ones. 
 

any thoughts? 

[petert 641]

Factory XU9J4 and XU10J4 rods are drilled to supply oil to the bushings.

[mmt 15]

Asked the machine shop to drill them. They Said between 2.5 and 3 mm would do the job. 

[SRDT 254]

By "retired" I mean that the part is replaced after X hours or X races in case of fatigue failure.

[mmt 15]

Thanks. Now I get it. :-)