HAHAHAHA I hear that!! The word "Back ordered" gives me the willies, reminds me when I ordered hi comp pistons for my 231 V6 from Kenne Bell 30 some years ago, they were back ordered, never came in, I cancelled the order, I REALLY wanted to see what a 10 to 1, 4 bbl NA V6 Buick with the Kenne Bell #1 SP intake and a mild cam with a 3.42 geared rear would do in an '82 Regal
So order the pistons now and you can get those put in before the rollers come in lol Wait for the parts don't flip the shafts you could make things worse and put more metal into the engine. You could put a magnet at the back of the head by the oil return hole to catch the metal. I have some in my heads and have been in there since 94. You waiting just proves how much the 350 is supported, there shouldn't be a backorder on those parts, it isn't like 350 guys are wearing out the parts all the time. It still stands your car running or the 350 heads it's only about 8 weeks till that Buick meet at Quaker Raceway. I know, there will be heads there for sale, so just wait and you can put them on Friday night at the track lol.
you wait and like it lol. Don't feel bad I have to get my car across a wet yard before I can take it out and right now it is swampy in back yard.
Happy Easter all I’m putzin in the garage this afternoon, put the distributor back in so when I rotate the engine I don’t loose track where the hell the timing is at, put 8 pushrods in and rebuilt rockers on pass. Side, and turned crank to adjust preload 3/4 turn, which is about .040 to .040 Here’s more boring pics
Mark, if those are Johnson lifters, they like less preload, 1/2 turn is plenty, they are short travel lifters that should only have a preload of about .035. That is what JW advised.
I measured my TA rockers and a quarter turn was .015, that's why I did 3/4 turn on the adjuster to equal .04 to .045
Too much pre load is worse than too little. You can always increase the pre load. I used 1/2 turn and the engine is very quiet.
Yes, in spec for standard travel lifters. Jim claimed the Johnson Roller lifters are shorter travel. This is a quote from the e mail he sent me when I bought the lifters from him, " Larry, These lifters are different.. they are a short travel lifter, that can only be pre-loaded .035.. That's about half a turn on your rockers.. I built that motor with 3/4 turn preload, and I think you have tightened it since.. so I think you will be adjusting, and there is absolutely no reason not to. . As mentioned above, check that preload.. I preload those lifters exactly a half turn past zero lash.. so they are near the max recommended running preload cold.. as the motor warms up, the heads expand, and you lose about .010 to .012 preload, so your well within the recommended range." I used 1/2 a turn.
Larry is your motor an aluminum head??? they do expand different than iron heads do. but short travel lifter do need to treated so. too much preload wi hold the valves open when running and pumped up........which seeing if I recall reading these already are since you got oil up to the top end which b4 you said you were not able to do. so if the preload is too much say going to 3/4 instead of half in, once the lifter bottoms out cranking any more will just compress the valve spring. I would verify preload with the manufacturer for the part number
Yes, my motor has aluminum heads. JW originally built it with the TA Morel lifters and 3/4 turn pre load. The valve train was noisy when hot. I replaced the Morels with Johnson lifters and used 1/2 turn per JW's advice. The engine is quiet cold or hot. The results speak for themselves I would say.
Maybe a change to the lifters. Mark's previous post with the picture says .035, plus or minus .010. So .025-.045 is spec. Maybe the BBB lifters are different?
Nahh, probably not. Just saying I got a quiet engine with 1/2 turn and my heads are aluminum. Marks engine is all iron so I figured less pre load is better. He will probably be fine at 3/4 of a turn. I just wanted to point out that the lifters are short travel, and JW's recommendation for pre load.
