Valve Adjustment help needed - Vielen dank!, She's running! Thanks for all the help! Options

[stephenaki]

OK, so I have searched and can't find a thread related to my situation, maybe because people are smarter and more experienced than me. The question is pretty much spelled out in the topic description.

The crank, rods, piston and cylinders are 2.0, the heads are machined 1.7, what measurement do I use for the valve adjustment? 1.7 or 2.0? (IMG:style_emoticons/default/confused24.gif)

I am leaning towards 1.7 but would like to get an educated opinion from the group. Help please, I want to re-do the valve adjustment before I mess with anything else.

[Cap'n Krusty]

Your 1.7 heads are unlikely to have sodium filled exhaust valves, so the setting is .006" all the way around. You'll need to reset them at 300 miles, then 1500, and every 3000 thereafter. BE SURE you calculate the deck height and combustion chamber volume accurately and adjust the cylinder base shims accordingly or you're gonna have WAAAAAAY too much compression. The Cap'n

[stephenaki]

Your 1.7 heads are unlikely to have sodium filled exhaust valves, so the setting is .006" all the way around. You'll need to reset them at 300 miles, then 1500, and every 3000 thereafter. BE SURE you calculate the deck height and combustion chamber volume accurately and adjust the cylinder base shims accordingly or you're gonna have WAAAAAAY too much compression. The Cap'n

Thanks, I'll adjust the valves then check compression and see where it is at.

[Cap'n Krusty]

Your 1.7 heads are unlikely to have sodium filled exhaust valves, so the setting is .006" all the way around. You'll need to reset them at 300 miles, then 1500, and every 3000 thereafter. BE SURE you calculate the deck height and combustion chamber volume accurately and adjust the cylinder base shims accordingly or you're gonna have WAAAAAAY too much compression. The Cap'n

Thanks, I'll adjust the valves then check compression and see where it is at.

NOT "the compression", the "compression RATIO". Has to be calculated before the heads go on. If you're using virgin 1.7 heads, it'll be too high. If you're using 1.7 heads that have been flycut, it'll be way too high. If you left out the head gaskets, as some here are inclined to do, it'll be WAAAAAAAAAAAY too high.

As for looking for TDC by using the mark on the distributor, good luck. It's set by the mark on the fan, and if that wasn't done right, nothing will be right. You don't need to do that unless you're using the antiquated, tedious, effort intensive, and downright old fashioned and inaccurate Pelican Parts technique. Using my technique, easily found in the "classic threads" section of this website, I can have a whole valve adjustment job done while you're still looking for your first (of 4) TDC.

The Cap'n

[stephenaki]

Your 1.7 heads are unlikely to have sodium filled exhaust valves, so the setting is .006" all the way around. You'll need to reset them at 300 miles, then 1500, and every 3000 thereafter. BE SURE you calculate the deck height and combustion chamber volume accurately and adjust the cylinder base shims accordingly or you're gonna have WAAAAAAY too much compression. The Cap'n

Thanks, I'll adjust the valves then check compression and see where it is at.

NOT "the compression", the "compression RATIO". Has to be calculated before the heads go on. If you're using virgin 1.7 heads, it'll be too high. If you're using 1.7 heads that have been flycut, it'll be way too high. If you left out the head gaskets, as some here are inclined to do, it'll be WAAAAAAAAAAAY too high.

As for looking for TDC by using the mark on the distributor, good luck. It's set by the mark on the fan, and if that wasn't done right, nothing will be right. You don't need to do that unless you're using the antiquated, tedious, effort intensive, and downright old fashioned and inaccurate Pelican Parts technique. Using my technique, easily found in the "classic threads" section of this website, I can have a whole valve adjustment job done while you're still looking for your first (of 4) TDC.

The Cap'n

Cap'n
Will look into your thread, as far as the heads, no, not virgin 1.7 heads, no I didn't leave out the head gaskets. The pistons are dished, how much of a difference will this make in the ratio? Learning all the time.