I pulled an engine apart and I was told the rockers are ration ones. Looking at them, they look identical to the stock ones except the shaft is smaller. The stock ones are 18mm dia while the others are about 15mm dia. How can I tell if they are ratio ones and what size (ie 1.25 or 1.4, etc)?
I can post pics if it helps
Raf
I'm no expert, be wouldn't the distance from the centre of the shaft to the ends of the rocker arms be different? This is probably why the shaft is smaller. I don't know what the stock measurements are, but if you have a stock set of rockers couldn't you could compare them?
Ain't nothin' like the wind in your hair.
68AutoBugBeetle Restorer - Experience over 138\% - YIKES --
That would tell You if they are ratio rockers - if they are different....
I've seen some but not next to a normal set...
the ones I daw did look different...
I don't know how You would tell the Ratio though....
they can make a difference to an engine though..... WOW
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---
Craig Torrens6 times Australian, 7 times State Hillclimb Class Champion
Have a look at where the pushrod seats against the rocker arm, if the dish section is offset to the casting (closer to the shaft) then it is probably ratio rockers.
Here is the pic.
I compared them to the standards one and some (not all) are longer at the bottom. Have a look at the ones circled in yellow, they are longer. The one circled red looks longer in the pic because it wasn't sitting on the same angle. The standard rockers are at the top of the pic. You can also see the difference in shaft diameter. I am more confused now.
