There's Zero Valve Lash on my Holden 308 - Wrong Pushrods?
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- Опубліковано 4 вер 2024
- Before I start assembling my Holden 308, another one of the tests I'm doing is checking the valve train and rocker geometry. Lucky I did, because I've found that there is variation in the free-play or lash, from barely enough to none at all, without any preload added via the adjusters. What's the solution? I'm not sure yet...
Hi Stace - thanks for your video
I think pre-buying pushrods is a bit of a lesson that everyone has to learn
it is much better to wait until you can put everything together and then measure the length you need
Can I suggest that you set the adjusters on the rockers to the middle of their range and then use the mid-lift method to get the correct push rod length
Good luck - have fun
will look forward to your next video 👍👍
Thank you, and yes, what a lesson. The pushrods came as part of my cam kit, which was supposed to save a bit of money, but now costs more! 😂
Yep, I ended up setting the adjusters mid way to get a better pushrod length... then there's the trick of how to measure a pushrod's length...
Great videos. Try putting the lifters in a container of oil and leave overnight and they will prime
Thank you! I had left them in oil for longer than that, but it seems maybe they'll only truly prime with oil pressure? Not to worry, I'll soak them all for a week, likely, before final assembly.
Thank you 👍
Expert knife flick😂
🤣🤣🤣
Keep up the great work 👍 👏 💪 👌
Lots of chances to learn things I never expected, on account of the little problems along the way. Fun, though.
@@staceonwheels I'm going to put a 253 in my HG kingswood ute .
Noice. Are you rebuilding it yourself?
@staceonwheels I might just put the v8 in and hope it's OK. The ute is getting a complete makeover, which I'll be doing all the work myself.
Enjoy and good luck with your 253.
Stace Why Do I Get The Feeling You Have Inherited A Mix-Match Engine And That's Why Nothing Works ???
Very interesting idea... it was running before I started messing with it! Personally I feel like it's just small variabilities in each component, adding up rather than cancelling each other out.
im a newbie but was wondering if the valve seat made the extra play "? say if there was a variation in depth taken during valve grind?
That's certainly a factor. The valve seats were professionally machined, with new valves, so the valve stems could be sitting higher and tipping the rocker arms more over the pushrods, giving less freeplay... 🤔
@@staceonwheels cheers im finding your vids helpful as i start my rebuild on an early 253