325 still knocking after valve adjustment,..

"adder1969" <adder1969 DeleteThis @yahoo.co.uk> wrote
> On Dec 19, 9:44 pm, Michael Yeager > quiet the valvetrain (and stop
> the customer from complaining). Ferrari
>> and Lamborghini I believe are the holdouts on hydraulic lifters unless
>> they've done it in the past year ot two...
>
> ..and BMW. My 2001 has no hydraulic tappets.

You must have an M car; BMW I6 engines since the M50 in 1990
have had hydraulic tappets, and the V8's do, too. Only the engines
in the M cars have solid lifters.

FloydR
 >> Stay informed about: 325 still knocking after valve adjustment,.. 

Michael Yeager wrote:

> Believe it or not, most performance engines up until just a few
> years ago had solid lifter or rocker arm type arrangements. Hydraulic
> lifters were designed for ease of maintainance and as mentioned to
> quiet the valvetrain (and stop the customer from complaining). Ferrari
> and Lamborghini I believe are the holdouts on hydraulic lifters unless
> they've done it in the past year ot two...

Sorry - wrong.

Ferrari has had hydraulic lifters for about 10 years that I know of -
and that's on engines that turn > 8K RPM. No valve adjustments, but
they did use timing belts - which require engine removal to replace at
15k intervals (which is why you see Ferrari's available cheap at around
15K miles.. people don't want to pay the money to have the belts replaced.)

http://cgi.ebay.com/ebaymotors/1997-Ferrari-F355-Spider-6-Speed-Nav-DV...ubi-Ser

There's a nice 10 year old with hydraulic lifters and recently replaced
timing belts..

Haven't looked at Lambo's..

Just looked, hydraulics:

http://www.caranddriver.com/roadtests/7699/lamborghini-gallardo-page5.html

Hmmm..

99% of the facts on USENet are made up on the spot..
 >> Stay informed about: 325 still knocking after valve adjustment,.. 

On Thu, 20 Dec 2007 09:20:27 -0500, admin <admin RemoveThis @192.168.0.2> wrote:

>Michael Yeager wrote:
>
> > Believe it or not, most performance engines up until just a few
>> years ago had solid lifter or rocker arm type arrangements. Hydraulic
>> lifters were designed for ease of maintainance and as mentioned to
>> quiet the valvetrain (and stop the customer from complaining). Ferrari
>> and Lamborghini I believe are the holdouts on hydraulic lifters unless
>> they've done it in the past year ot two...
>
>Sorry - wrong.

That's nice to know, not sure I care for the arrogance of "Sorry -
wreong" but that's the way it is. There have obviously been a few
advances in hydraulic lifters over the years. The last time I dealy
with them they tended to float and subsequently fail at RPM levels
over about 6500. This was a pushrod motor as well, I'm certain that
makes a difference.

>Ferrari has had hydraulic lifters for about 10 years that I know of -
>and that's on engines that turn > 8K RPM. No valve adjustments, but
>they did use timing belts - which require engine removal to replace at
>15k intervals (which is why you see Ferrari's available cheap at around
>15K miles.. people don't want to pay the money to have the belts replaced.)
>
>http://cgi.ebay.com/ebaymotors/1997-Ferrari-F355-Spider-6-Speed-Nav-DVD-Tubi-Serviced_W0QQitemZ260189556157QQihZ016QQcategoryZ6212QQcmdZViewItem
>
>There's a nice 10 year old with hydraulic lifters and recently replaced
>timing belts..
>
>Haven't looked at Lambo's..
>
>Just looked, hydraulics:
>
>http://www.caranddriver.com/roadtests/7699/lamborghini-gallardo-page5.html
>
>Hmmm..
>
>99% of the facts on USENet are made up on the spot..
 >> Stay informed about: 325 still knocking after valve adjustment,.. 

Michael Yeager wrote:
> On Thu, 20 Dec 2007 09:20:27 -0500, admin <admin RemoveThis @192.168.0.2> wrote:
>
>> Michael Yeager wrote:
>>
>> > Believe it or not, most performance engines up until just a few
>>> years ago had solid lifter or rocker arm type arrangements. Hydraulic
>>> lifters were designed for ease of maintainance and as mentioned to
>>> quiet the valvetrain (and stop the customer from complaining). Ferrari
>>> and Lamborghini I believe are the holdouts on hydraulic lifters unless
>>> they've done it in the past year ot two...
>> Sorry - wrong.
>
> That's nice to know, not sure I care for the arrogance of "Sorry -
> wreong" but that's the way it is.

Michael - do you really think I care? It's not arrogance when you ARE
wrong and ARE stating things as FACT when they are not. A tiny bit of
fact checking goes a long ways towards credibility.

76% of statistics on the Internet are made up on the spot..

I just do the things the voices in my wife's head tell me to..
 >> Stay informed about: 325 still knocking after valve adjustment,.. 

On Fri, 21 Dec 2007 19:08:36 -0600, "Bill" <wechorba.RemoveThis@yahoo.com> wrote:

>
>So... was the problem resolved or what? We know the M20 valves are
>driven off a rocker arm riding the cam.
>
>Bill in Omaha
>'86 535i
>

Well, the knocking is most likely still an issue if it's anything
other than valve tick or injector noise. The original poster hasn't
said much lately and the message seemed to go way off course. I'd be
curious to hear from the original poster as to whether or not this
noise is present all the time or not and what oil he's using. There
are probably other factors that one could think of as well.
 >> Stay informed about: 325 still knocking after valve adjustment,..