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Re: Itinerant Air-Cooled Greetings From Washington
Posted: Tue Aug 15, 2017 6:56 am
by Bleyseng
If he had a set of those ceramic lifters he could just install them worry free. Sorry, sold my set years ago....
Re: Itinerant Air-Cooled Greetings From Washington
Posted: Tue Aug 15, 2017 8:19 am
by Ronin10
First I've ever heard of ceramic lifters. Were these a one-off thing?
Re: Itinerant Air-Cooled Greetings From Washington
Posted: Tue Aug 15, 2017 9:15 am
by Amskeptic
Ronin10 wrote: ↑Tue Aug 15, 2017 8:19 am
First I've ever heard of ceramic lifters. Were these a one-off thing?
I heard Jake Raby mention them when he was having so much difficulty with replacement lifters going bad. Bleyseng, how do ceramic lifters play with various camshaft hardnesses?
Re: Itinerant Air-Cooled Greetings From Washington
Posted: Tue Aug 15, 2017 3:19 pm
by Jivermo
Yes, this is interesting.
Re: Itinerant Air-Cooled Greetings From Washington
Posted: Wed Aug 16, 2017 5:00 am
by sgkent
re ceramic lifters:
Postby SonnyJames » Thu Jan 28, 2010 1:39 pm
Dealt with one that exploded in a Jersey skiff....the carnage was unreal! the ceramic embedded into and destroyed everything. "sand grenade" is the perfect analogy.
Re: Itinerant Air-Cooled Greetings From Washington
Posted: Wed Aug 16, 2017 9:02 am
by tommu
sgkent wrote: ↑Wed Aug 16, 2017 5:00 am
re ceramic lifters:
Postby SonnyJames » Thu Jan 28, 2010 1:39 pm
Dealt with one that exploded in a Jersey skiff....the carnage was unreal! the ceramic embedded into and destroyed everything. "sand grenade" is the perfect analogy.
Most things that explode will cause a problem. Any experience of them in a T4 engine with stock spring pressure?
Re: Itinerant Air-Cooled Greetings From Washington
Posted: Wed Aug 16, 2017 3:20 pm
by tewa3240
the ceramic lifters were Schubeck brand back in the day, were $600+ for eight?
the valve seats & valves will time out before the fancy lifters ever fail, so, for the price,
what have you really bought ? Guess one would need a 'ceramic camshaft lobe' to make it to the next level. : (
Re: Itinerant Air-Cooled Greetings From Washington
Posted: Wed Aug 16, 2017 8:54 pm
by Bleyseng
They worked fine with stock cams resulting in zero wear. I paid $400 for a set of 8 for a planned Autocross motor that never happened. Jake called me one day to talk me into selling them to a 914 racer for his engine Jake was building. They were super light and great for rpms in the 7000-8000 range
Re: Itinerant Air-Cooled Greetings From Washington
Posted: Wed Aug 16, 2017 8:59 pm
by Amskeptic
Bleyseng wrote: ↑Wed Aug 16, 2017 8:54 pm
They worked fine with stock cams resulting in zero wear. I paid $400 for a set of 8 for a planned Autocross motor that never happened. Jake called me one day to talk me into selling them to a 914 racer for his engine Jake was building. They were super light and great for rpms in the 7000-8000 range
Do we have a true long-term test?
Colin
Re: Itinerant Air-Cooled Greetings From Washington
Posted: Fri Aug 18, 2017 9:54 am
by Bleyseng
Last I heard guys have been running them for 10 years without problems but I don't know definitely with scientific testing. The way I understand it that the two different materials don't wear due to the oil film sticking to the ceramic lifter surface. They were super light so reduced the valvetrain weight to allow greater rpms without going to super HD valve springs to keep the lifters following the cam (valve float). I remember they stopped making them as the ceramic material became " Strategic" after 911. I was going to build a engine using them along with Nikasil cylinders for a lifetime engine.