IC 392 Valve Train issues

[Robert Kenney]

Moot,
sorry to hear you has issues with the rocker stands. Call Jeff tomorrow and he will take care of it. I know things do go wrong sometimes so all we can hope for is that things are made right. I know Jeff will or who ever will.

Good thing to come of this is your rig is happy and oiling. You played a big part in getting things right. Glad you didn't give up and kept on trucking. Thanks for sharing your project with us..

The rocker ratios are different a bit. The welded ones are different between the intake and the exhaust. Opinions differ here but I measured both and get about 1.7 and 1.75 for the welded and the overall opinion on the boats is they both are 1.6. The ratio difference will mainly effect lift a bit but only a small difference in duration @ .050.

I have a fixture setup that I intend to use for a rocker arm ratio validation study on both styles. I will measure the ratio from just opening to fully open and chart the data points for the record.

 

[Michael Mayben]

I've found after looking at way more than 100 rocker stands (useable) in the last few days, that they varied somewhat from the factory as to "height". And I've also experienced the same leakage at the base and had to swap some stands around to cure the problem. But I've not ever had a new (nos) stand or two to compare that has not been "crushed" by being installed previously.

The "crush" is why they are difficult to remove and install. The rocker stands I recondition are all individually honed and inspected.

Four sets of nine reconditioned stands (two oilers, seven non-oilers) are on their way down to ihon tomorrow along with a bunch of other parts. All have been honed and test fit on a new rocker shaft. I do not glass bead anything, I mechanically clean all parts by hand prior to inspection for quality.

The reconditioned parts you received were provided through a different supplier, not from me. We are just now getting our own source parts into the inventory at ihon.

We're sorry you have experienced an issue with the parts you received, so replacements will be on the way to you once Jeff receives 'em from me. Or he can send me a packing slip and I'll drop ship a set to you directly. And all nine stands you receive this time will match for installed height...any I find that don't match are set aside and not shipped for any use. Once I have a set of nine "mis-match" stands, then those all get machined as a set and and used on my personal stuff, those never get shipped to a customer. The replacements will also all be the "large bolt hole" version so that you May adjust for side play as needed. About one half of our current reconditioned inventory are drilled with small holes.

edit: one of the oiler stands I've prepped for you will be a "small hole" version. Use that one to index the shaft from in relative position to the head. Every "set" of nine stands includes two oilers...the reason for that is so that the shaft assembly can be used on either side without having to disassemble/reposition any stands. Also...the "second" oiler stand (actually both) is cut away at it's base to clear the head of the head bolt, there is an interference point when mounting to the head if ya don't have the "cutaway" stand in the correct position.