mrwibble
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| posted on 12/9/09 at 01:26 PM |
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solid lifters vs hydraulic
I note the silver top zetecs have hydraulic lifters, and the newer black top have solid. is there any benefit?
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MakeEverything
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| posted on 12/9/09 at 01:51 PM |
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automatic adjustment??
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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MikeRJ
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| posted on 12/9/09 at 02:00 PM |
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Solid lifters allow the use of more aggressive cam profiles and don't suffer from sticking as hydraulics ones can as they get older. They do
however need to have valve clearances manually checked and adjusted.
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britishtrident
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| posted on 12/9/09 at 02:11 PM |
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Shimming up the valve clearances on a 16 valve DOHC engine isn't fun ---- give me hydraulic lifters any day.
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bimbleuk
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| posted on 12/9/09 at 02:44 PM |
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quote:
Originally posted by britishtrident
Shimming up the valve clearances on a 16 valve DOHC engine isn't fun ---- give me hydraulic lifters any day.
20 shims on my 4AGE and the replacements are in Japan!
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paulf
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| posted on 12/9/09 at 08:16 PM |
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As mentioned solid lifters do take time to shim up if needed, but if a newish engine and it only does low mileage then you may never need to worry
about shimming them.
I had trouble with hydraulic lifters on 2 engines before i fitted a black top with solid lifters and also know of others that also had problems with
them sticking and pumping up even when using the correct 5/30 oil.
Paul.
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BenB
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| posted on 12/9/09 at 09:16 PM |
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As said, for boring normal engines with tame cam profiles hydraulic followers are good because they're low maintainance but for crazy cams
you're better off with solid lifters but they'll take more effort to keep them from going tappety....
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britishtrident
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| posted on 13/9/09 at 11:13 AM |
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Wynn's Hydraulic Lifer treatment is magic stuff !
Most common cause of hydrauilic lifter problems is gum.
I add half a container (about 150mL) between services .
[Edited on 13/9/09 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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NS Dev
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| posted on 13/9/09 at 11:23 AM |
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unless its a race engine I'd stick with hydraulic lifters.
Don't know on a zetec, but the vauxhall ones are fine to 7750 rpm or 8000 for shorter periods, and yep, setting the shims on a 16v engine
isn't a 5 min job........
If you have an infinite supply of shims its fine, but otherwise you really need your own surface grinder.
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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britishtrident
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| posted on 13/9/09 at 01:46 PM |
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quote:
Originally posted by NS Dev
unless its a race engine I'd stick with hydraulic lifters.
Don't know on a zetec, but the vauxhall ones are fine to 7750 rpm or 8000 for shorter periods, and yep, setting the shims on a 16v engine
isn't a 5 min job........
If you have an infinite supply of shims its fine, but otherwise you really need your own surface grinder.
With recent Vauxhall tintops the hydraulic lifters stick pretty badly at around the 70,000 mile mark if they haven't been run on fully 5w/30
synthetic.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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