Denny;I was under the impression most hydraulic valves are adjusted by turning or rotating the rod and not up and down.I could easily turn the rod after taking the up and down motion out.Quote:
Originally Posted by DennyW
Don In Austin**)
Printable View
Denny;I was under the impression most hydraulic valves are adjusted by turning or rotating the rod and not up and down.I could easily turn the rod after taking the up and down motion out.Quote:
Originally Posted by DennyW
Don In Austin**)
The Moly,Plasma moly,Chromium Nitrided,Gas Nitrided,Titanium Nitrided rings will still take much longer to seat compared to a stock style cast ring.Quote:
Originally Posted by 76GMC1500
All these listed are a very hard material and will take some time to seat.
In one of our IMCA mod. engines which turns 7,500 + and has over 13 to 1 comp. ratio we have had rings that have taken three or more nights to seat.
This is about like running a drag car half a season.
There are many varibles such as cylinder finish,cross hatch, the type of oil used,additives etc.
.....Drive it like you stole it ;)...... zzzQuote:
Originally Posted by Don Dalton
The rings don't wear, just the cylinder walls. Just because the rings are hard doesn't mean they are slow to break-in because the rings themselves don't really break-in.
If you look at the cylinder walls under magnafiaction you will see peaks and valley's the whole idea is to have these surface's mate together over time this is how you get good ring seal and build horsepower.Quote:
Originally Posted by 76GMC1500
The initial start-up at 2000-2500 rpm idle for 20 minutes is for breaking in the cam. The rings also need to be set. I like the break in procedure that came with my ZZ502 (hydraulic roller engine). In summary,
1) Start and set timing, check for leaks etc
2) Drive for 30 miles. During the first 30 miles no full throttle romps or continuous throttle prolonged runs. Do 5-6 half-throttle accels to 60 mph letting off in gear each time down to 20-30 mph. Do 5-6 3/4 throttle runs to 60 mph letting off the throttle each time in gear.
3) Change oil, retorque heads (good idea for all aluminum head engines)
4) Drive normally for 500 miles. No full throttle runs and no prolonged runs at the same rpm.
5) Change oil
6) Engine is now ready to rock and roll!
The first 30 miles is really designed to set the rings. The next 500 breaks in the rings and cylinder bores. Makes some sense to me ............
Kitz
Thanks to all that responded I'll keep you posted.Quote:
Originally Posted by DennyW
Thanks
Don In Austin**) **)