Hydraulic cam followers

[whitecliffs]

Is there anyway to test the hydraulic cam followers once there out of the engine, ive got two sets, one set came from a running engine which was nice and quiet, and another set is untested.

Both set are all solid with no movement, is that the way they should be or should there be some spring movement

[Steve Tinker]

If you go over to the Rennlist.com website and look under the 996 Forum, there is an interesting discussion under last July by Schnell Gelb covering his experiences with hydraulic lifters.
I think he stripped the old frozen lifters only to find clean oil and no debris so then submerged the lifters in heated new oil - but maybe my memory is playing tricks again.....

[Gelbster]

Yes Steven,that was me- 'cooking' lifters.Not effective.I also posted a crankshaft being dry-roasted in my wife's oven.
The lifters have an updated INA part number. Most of the old ones get the tappet 'hammered' or jammed into the bucket. No repair possible. This causes the "they all make that ticking noise" comments about the older M96 engines?
Replacing all 24 @ $40+ each is a bit steep. $8 was much better!
Lots of geekish details scattered around the Forums.I got very little participation at the time.Many months ago I discussed the BMW-lifter interchange issue with Rock Auto & their vendor in England(BGA).They now list it for the M96 under the interchange number.In the past it was only listed under BMW.Be sure you order/get the correct part number!
I have not heard on the Forums of anyone other than me trying the substitution. Hmmm ,there may be a reason?
No info on exactly what the INA upgrade/mods were.I suspect just clearance/tolerance. Until we get field results it is a very risky substitution.Obviously they fit physically and measure up exactly but the proof will be running them for a few thousand miles.

[flaps10]

Originally Posted by Gelbster

Replacing all 24 @ $40+ each is a bit steep. $8 was much better!

Gelbster,
Where did you find lifters for $8/ea? For that amount I wouldn't even bother shattering domestic tranquility with motor oil smoke in the kitchen.

[Gilles]

Originally Posted by Gelbster

The lifters have an updated INA part number. Most of the old ones get the tappet 'hammered' or jammed into the bucket. No repair possible. This causes the "they all make that ticking noise" comments about the older M96 engines?
Replacing all 24 @ $40+ each is a bit steep. $8 was much better!

Gelbster,
May I ask you where did you buy the INA lifters for $8..?
Thank you!

.

[Gelbster]

from Rock Auto

[roma7845]

found this on youtube.... https://www.youtube.com/watch?v=oRNbKG_xLJs

hope this also helps

[Gelbster]

This is more like the M96 lifter.
https://www.youtube.com/watch?v=HT71uhnNYjg
The problem is - do you think that merely cleaning the lifter will prevent it getting jammed again? If so , why?
If you look at the effluent from the dismantled lifter ,it is just dirty oil and a little carbon. The oil is so dirty ,it looks like a neglected oil-change history to me.

[Gilles]

Originally Posted by Gelbster

from Rock Auto

2007 PORSCHE CAYMAN 3.4L H6 : Engine : Valve Lifter Price
BGA Part # HL5368 {#0K95K12101A} Hydraulic Type; Height: 24mm; Outer Diameter: 33mm; For Exhaust Valves
[Flag indicates this part fits vehicles sold in the European Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide.] S; Coupe; From 11/05; To 08/09; RWD
[Flag indicates this part fits vehicles sold in the European Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide.] S; Coupe; 6F Model; From: 11/2005; To: 08/2009; RWD; Exhaust; Engine Code: M97.21

* Stocked in outlying warehouse--shipping delayed up to 1 business day
$41.79

[BYprodriver]

Originally Posted by whitecliffs

Is there anyway to test the hydraulic cam followers once there out of the engine, ive got two sets, one set came from a running engine which was nice and quiet, and another set is untested.

Both set are all solid with no movement, is that the way they should be or should there be some spring movement

Cook at 250 F degrees & pump the plunger.

[Bfan]

During my 3.6 LN sleeved rebuild I naturally had to do this trick. After looking at Bypros picture I cooked mine in "Jo Gibb´s run in oil" intil my I eyes hurt from the fumes. Did it in the kitchen in my part of a dublet house. I don´t think my neighbors that own the other half of the house will ewer forgive me. But the engine is still running strong....interesting subject.....subscribed

[Gelbster]

If Bill "BYprodriver is on the thread, please disregard anything I wrote and listen to him.
"Cook at 250 F degrees & pump the plunger."
Some deep fried finger tips if you do that at 250 degrees? :-).

But what do you do if after cooking, the tappet is either soft or jammed up into the bucket?
What do you use as new replacement lifters? OEM/Porsche?

[whitecliffs]

Don't think I would get away with cooking them in the kitchen, wife went mad last time she found a set of pistons drying in the oven after being cleaned.
Here in the UK branded lifters are around £16.50 each.

[BYprodriver]

Originally Posted by Gelbster

If Bill "BYprodriver is on the thread, please disregard anything I wrote and listen to him.
"Cook at 250 F degrees & pump the plunger."
Some deep fried finger tips if you do that at 250 degrees? :-).

But what do you do if after cooking, the tappet is either soft or jammed up into the bucket?
What do you use as new replacement lifters? OEM/Porsche?

I replace any suspected bad ones with INAs.

[Gelbster]

There is an interesting hint in the Bentley manual regarding the risk of damaging lifters if only oil-foam instead of liquid oil reaches them.
Porsche revised the de-foamers in the sump for the 987. They are quite different to the originals. I fitted the latest style because I have a paranoia about foam in a flat engine without a dry sump.I also fitted my own peculiar version of an aftermarket deep sump+horizontal baffle arrangement. It adds 2qts and ensures the pickup is submerged at all times.
I also plan to use engine oil with high anti-foam additives/low detergent. The jammed lifter problem is so common on the flat 6 but so rare on the I6 and V6 engines that use the same INA lifter .... well maybe it is the foam issue?
It may all be nonsense ,I know.

[Gilles]

Originally Posted by Gelbster

There is an interesting hint in the Bentley manual regarding the risk of damaging lifters if only oil-foam instead of liquid oil reaches them.
Porsche revised the de-foamers in the sump for the 987. They are quite different to the originals. I fitted the latest style because I have a paranoia about foam in a flat engine without a dry sump.

Gelbster,

I remember reading that Vision Motorsports recommends using the earlier type 996 'aerators' versus the 987's because they promote a better separation of the oil and air (foam)...

.

[Gelbster]

That is an interesting comment -thank you. I thought that since it was the latest version ,it would be and improvement in de-foaming.
Even more strange ,the 987 parts came as part of the deep sump kit I mentioned. so the kit manufacturer went to all the trouble of supplying the later part with the intention that you dump the old defoamers.
here is a link to the kit:
2001 Porsche Boxster S Convertible - Oil Circulation - Page 3
Here is the original part number :
99610708054
The upgrade is the same as an '06 997. Sorry I had typed 987 above.
This ad has a photo of both the old and the new design.
Huge difference in design/size.
06 Carrera s Porsche 997 Coupe 3 8 Engine Motor Oil Pickups Lower Bottom 67 971 | eBay

[Smallblock454]

Hi Gelbster,

if you've found a INA part number on your OEM Porsche hydraulic lifters and the lifters are exact the same, i didn't see a problem.

If not. i think it is very risky to use them, because the valves are lenghtend over time. So it is very important to compensate this lengthening. Else the valve won't close perfect. This will cause a less in horsepower on the one hand, but much more important it will prevent that the valve will be cooled. And this will cause damaged valves, valve seats and valve shaft seals. And this will cause much much higher costs to repair.

Here is a video that shows the function of hydraulic lifters:
http://youtu.be/lorANZ1Tptw

If the oil reservoir and diameter of the oil pathways in the hydraulic lifter are not exactly the same, the lifter can not work as designated.

Regards from germany
Markus

[Gelbster]

Markus,
You are correct
I relied on the Interchange information and physical dimensions.The INA part is very common & has many applications if you go through all the Interchange sources.
Here is the Rock Auto info:
2001 PORSCHE BOXSTER 3.2L H6 : Engine : Valve Lifter
BGA Part # HL6330 {#11321748884} Hydraulic Type; Height: 24mm; Outer Diameter: 33mm; Single Lifter
$8.53 each minus 10% discount but shipping from U.K. s $28+
Here is the interchange info from YoYo:
HL6330,BGA HL6330; Valve Tappet
HL6330,BGA HL6330; Valve Tappet
To date, nobody has chimed in here or on other Forums to say :"Yes, I used that part and it has worked correctly for xx,xxx miles".There may be a reason for that..........?

[Smallblock454]

Hi Gelbster,

did a little online research. FEBI Bilstein which is a well known after market supplier for OEM parts (not a dealer) lists the hydraulic lifters for Porsche.

Measures
lenght: 24 mm
outer-diameter: 33 mm

Part numbers:
BMW 11 32 1 748 884
Porsche 996 105 041 50 <- make 100% shure these are the right ones for your car.
Febi Bilstein 07589

Link: Herzlich Willkommen in unserem Internetkatalog

Info: http://cars.febi-parts.com/download/Ventilspiel_D.PDF

Also searched the INA online parts catalogue: medias® professional – Product catalogue

But no results for the given part number on the ebay website: 420004910.
INA in general doesn't produce hydraulic lifters. Their business is bearings.

Please check Porsche part number, because the 3.2 is not listed in the FEBI catalogue. Only 2.5 and 2.7 engines are listed! So make 100% shure that it is the right Porsche OEM part number for your car.

Because the FEBI part number is correct i would say go for it in general - if the Porsche part number is correct for the 3.2 engine. And make shure you get original FEBI Bilstein parts, which are high quality parts.

Regards from germany
Markus