Lifters replaced... still ticking
#16
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Originally Posted by pcar964
Thanks Finn - because Viperbob said he would have some ready for me this Friday when we do the PSS9 install, but I'm sure he knows the differences - But I'm wondering, why would they use different sizes? I didn't know they made any changes to the design of the valvetrain?
Have you done your lifters yet?
Have you done your lifters yet?
I got the lifters for exhaust side but I haven't changed them yet. I just ordered the "standard" size and am hoping they are the right size, with my luck...
#17
From reading the shop manual, it seems that standard size is used in all cars until a rebuild. And I never was able to find part numbers on lifters, old or new. It appears you've got to measure them if you suspect a rebuild was done and you may have the non-standard size.
Take a look at this from the shop manual:
Take a look at this from the shop manual:
#19
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Hmmm, different lengths and measuring for lash? Interesting. When I did mine many, many moons ago, I had no options as to length, nor did they stock anything else than "993 lifters." From what I can infer from the manual page, the diff lengths are to accomodate head work performed (as per first line). A stock valve train (I would think) would fall within a spec range that hydraulic tappets can accomodate since they, by design, extend themselves to provide zero lash.
As for pumping the adjuster, yes, I had done that on motorcycles years ago: it bleeds them of air and primes them for faster response once the engine is fired up. But when I did my 993 hydraulic adjusters, I remember them not being compressable ...maybe that's my failing memory. Not to mention that some here are advocating "soaking" them ...sorry if I misunderstand, but taking a bath in 15w oil is a far cry from pressurizing them. We need a knowledgable 993 wrench here to answer this definitively so as to avoid spreading mis-information ....Steve W., you listening??
Edward
As for pumping the adjuster, yes, I had done that on motorcycles years ago: it bleeds them of air and primes them for faster response once the engine is fired up. But when I did my 993 hydraulic adjusters, I remember them not being compressable ...maybe that's my failing memory. Not to mention that some here are advocating "soaking" them ...sorry if I misunderstand, but taking a bath in 15w oil is a far cry from pressurizing them. We need a knowledgable 993 wrench here to answer this definitively so as to avoid spreading mis-information ....Steve W., you listening??
Edward
#20
Valve noise???
I found this hope it helps.
https://rennlist.com/forums/993-forum/199508-valve-noise.html
https://rennlist.com/forums/993-forum/199508-valve-noise.html
#21
King of Cool
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Originally Posted by pcar964
Finn, are your lifters making any noise currently, or are you just doing it ahead of time?
I bought 12 lifters just in case and will do them ahead of time, when I find time to do them , or when it/they start to make noise.
#22
Three Wheelin'
Originally Posted by Edward
Soaking does not do much (if anything) to pressurize them. How does taking a bath in thick oil force oil into those miniscule orifices? AFAIK, you've got to run the engine as forced pressure is the way to bleed them of air. Any real experts, please feel free to correct me
Edward
Edward
---Chris A.
#24
Rennlist Member
When my car was under warranty, I complained about the ticking noise and oil dripping. So the dealer changed all the lifters, rocker arms, etc. and resealed the whole engine.
I saw them dipping the new lifters in diesel fuel for a second before inserting them, don't ask me why.
After all that, the ticking remained. They said it would vanish after 500 kilometers.
50000 kms and it is still there.
ie: even after the dealer did the job, mine is still ticking too
I saw them dipping the new lifters in diesel fuel for a second before inserting them, don't ask me why.
After all that, the ticking remained. They said it would vanish after 500 kilometers.
50000 kms and it is still there.
ie: even after the dealer did the job, mine is still ticking too
Last edited by geolab; 11-02-2007 at 06:13 AM.
#25
Burning Brakes
Had all my lifters replaced at 50,000 miles - 2,000 miles on and one started 'ticking' again on start up after leaving in garage for a couple of weeks. After driving for a short while it stops - only happens now and then but a real nuisance and now I listen for it every start up. Who said the 993 was the best 911 - can't agree ar all after the work that I've had to put in to mine but once you've spent the bucks........
PJC
PJC
#27
King of Cool
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Are you guys sure your ticking noise is not the normal ticking noise these engines have?
Air cooled Flat-6 engines always tick a little, same way old VW beetle engines do.
I know some of you kow that but I'm thinking maybe some of you are not used to it if you haven't had this type of engine before and think something is wrong when in fact it's just the normal "VW Beetle tick".
Air cooled Flat-6 engines always tick a little, same way old VW beetle engines do.
I know some of you kow that but I'm thinking maybe some of you are not used to it if you haven't had this type of engine before and think something is wrong when in fact it's just the normal "VW Beetle tick".
#28
Originally Posted by Flying Finn
Are you guys sure your ticking noise is not the normal ticking noise these engines have?
Air cooled Flat-6 engines always tick a little, same way old VW beetle engines do.
I know some of you kow that but I'm thinking maybe some of you are not used to it if you haven't had this type of engine before and think something is wrong when in fact it's just the normal "VW Beetle tick".
Air cooled Flat-6 engines always tick a little, same way old VW beetle engines do.
I know some of you kow that but I'm thinking maybe some of you are not used to it if you haven't had this type of engine before and think something is wrong when in fact it's just the normal "VW Beetle tick".
#29
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Originally Posted by pjc
Had all my lifters replaced at 50,000 miles - ...... Who said the 993 was the best 911 - can't agree ar all after the work that I've had to put in to mine but once you've spent the bucks........PJC
#30
Originally Posted by chris walrod
Get a newer model, and you'll be tickled to see an engine make it to 50,000 miles. Better yet, work on a few 993's, then on new models and you will very quickly see differences why so many love the 993.