Greetings Zed Heads

[Zedyone_kenobi]

Well I am happy to report that after several months of my car being on jack stands I got to get her going and go for a very spirited drive. Well that was so lovely. I forgot how much I love that L28 and how good it feels up top. It also reminded me of several things that I wanted to do that I wrote down during my rally.

First was my brakes, and the reason that I had the car up on jack stands. The cars new calipers and wheel cylinders are working fabulously, and I even took the time to put in some ATE super blue and bleed the master cylinder for kicks. I call that a victory. Car stops well enough for now. Pads are bedding in and things feel better each time I stop.

Quickly during my drive I remember how crappy my throttle linkage feels. It was fine on the first part of the rally, but somewhere along the way it started to stick, holding at 1700 rpm at idle unless you blip the throttle many many times. But that is another thread.

What I want to talk about is VALVE ADJUSTMENTS. Eiji recommends setting the valve lash cold. So I did that after I I had 500 miles on the engine before the rally. Then after the rally I checked the tolerances. They were all DEAD on. I was shocked. I figured they would have crept one direction or another.

I am running 0.008/0.010 as everybody else is here. Now having said that. Ever since I have had this engine I thought the valve train was a bit noisy after she warmed up. When I first start up you cannot even hear the valve train. After she is fully warm at lower RPM you can hear it ticking/tapping away. I have gone over what this may be in my head. Forged pistons do not expand as much as cast. My old V8's had piston clap all day long as I ran forged pistons on them. Now my oil after 1000 miles was practically clean. My plugs were a lovely shade of light brown. It will idle all day long and not over heat.

I am really NOT worried about the health of the engine, but if I can quiet the valve train down a bit, I would like that.

I have read posts here about people running narrower gaps than 0.008/0.010". I am wondering if there is any comments on the validity of that. The gaps increase on engines when they get hot as the hot lash should be 0.010/0.012" if I recall.

Anybody try to tighten the valve clearances?

[SteveJ]

The hot values you listed are correct.

[rcb280z]

My L28 in my 77 280 also makes noise like that after warm up. Has always.

[Zedyone_kenobi]

I knew these L motors have noisy valve trains to some extent, but my L24 was whisper quiet compared to my built L28. Grant you the cam ramp up rates are far greater than the OEM grind on the L24. I just wish there was a way to make it a tad quieter.

[grannyknot]

http://www.classiczcars.com/forums/engine-drivetrain-s30/47852-valve-adjustment.html

there is some good info here

[Zedyone_kenobi]

THANKS!

I remember reading that and could not find it for whatever reason. I may have to play with this adjustment.