[DeTomaso] lifter noise

[boyd casey]

Ken,
Thanks for the info. I think you saved me from a potential ripoff. I spoke
to a mechanic that owns a shop that works on exotics (mostly Porsches) and
he told me that he would have to pull the cam to change a hydraulic lifter
so I know I won't be using him!
Thanks again,
Hugh

On Fri, Apr 1, 2011 at 12:36 PM, Ken Green <kenn_green at yahoo.com> wrote:

> Mechanical lifters have a mechanical sound and I think if you listened to a
> hydraulic lifter engine and then a solid lifter engine you'd hear the
> difference pretty clearly.
>
> You don't need to pull a head or cam to change a lifter, just the valve
> cover and intake manifold, and since it's a dry intake manifold, it is much
> easier.  But you might want to make a rough measure of valve lift on all the
> valves to make sure none of the lobes have been flattened if you're hearing
> valve train noise.
>
> And, check your exhaust for leaks.  It's amazing how metallic an exhaust
> leak at the heads can sound.
>
> Ken
>
> --- On *Fri, 4/1/11, boyd casey <boyd411 at gmail.com>* wrote:
>
>
> From: boyd casey <boyd411 at gmail.com>
> Subject: [DeTomaso] lifter noise
> To: "De Tomaso List" <detomaso at realbig.com>
> Date: Friday, April 1, 2011, 8:36 AM
>
> I have what sounds like a lifter tap. I think I have hydraulic lifters but
> I
> have never had the valve covers off. First off is there an easy way to
> check
> (like through the oil fill opening ) if I have hydraulic or solid lifters?
> Secondly if they are hydraulic (my guess) is there a way to get rid of the
> noise? I have heard of hydraulic lifters collapsing , how big a job is it
> to
> replace a bad lifter? do you have to pull the heads? can it be done from
> the
> top of the motor with just the valve covers off and do you have to access
> the cam. If it is a big job I think it may be time to re power and go to
> better heads and solid lifters etc. Any suggestions would be appreciated.
> Boyd
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