stvracing

Who sells ultra sonic cleaners?

Ducman82

ebay is where i have seen lots. Branson sonic.

Ducman82

used a hobby syringe and got them full of oil, i just don't think i can get them "up to pressure". they are stiffer for sure, but not perfect. need a oil gun attachment to my air hose... :-P

RCinXS

Well, I use a squeeze ketchup bottle with a tapered CA Glue Tip.

The taper of the CA glue tip seals the lifter hole and the big end fits snuggly on the pointed cap of the ketchup bottle.

Your hands can not produce as much pressure as the oil pump but you certainly can get them rock hard and it's a comfort to know that.

Remember that they will bleed off over time. You could use this method to pump them up just before assembly.

Once the followers are in their bores they seal pretty well and will remain fairly pumped up before you start the engine the first time.

PS: Still looking for that oil pump gear.

Podguy

I got a stainless steel lined ultra sound unit from Harbor Freight. It works great, just do not put flammables in it. The sound produces a lot of heat and then puff. I always use it outside my shop.

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Podguy

Just put them in with some oil and then turn the engine over a lot before trying to start it. That is something you should do anyways. The oil pump will build up pressure and oil the engine on cranking. Checking for oiling before starting is something you should do anyway.

GregBBRD

Of course, they will be slightly used and from the lab that is trying to attach the Ebola virus to the common cold virus, but don't worry about that.

Fronkenstein

Yes! Dextron is a great choice. You are going to dump the oil after initial run in anyway regardless whether its a full rebuild or a top end job just to make sure no crap is in the oil system.

The Dextron will clean out the lifters and will add some detergent to the oiling system. I run a pint of Dextron through my diesels every tank full. I will also run a pint of Dex in my cars fuel and oil system just before oil change.

Fronkensteen

hacker-pschorr

From the 951 world:

https://rennlist.com/forums/944-turb...-you-down.html

Turc928S4

There is a write up on clean/recondition your Hydraulic Tappets on jenniskens site.

http://jenniskens.livedsl.nl/Technic...7/MyTip795.htm

davek9

I have an old set would be neat to try this and see how it goes

Jay Wellwood

Great write-up. Many thanks to the OP and the author for sharing this info for the 32V type lifters.

The 16V lifters are slightly different (pistons/sleeve assembly is held in place with 4 stake marks instead of the retainer ring). Anyone tackle this annoying job for those lifters?

Vilhuer

Here's the deal. Cleaning lifters is fine but there is no need to get them pressurized before install and startup. It is done on the engine before engine is put back into car. This works like clockwork every time.

1. Turn crankshaft to 45 degrees BTDC.
2. Install heads, lifters and cams but do not install cambelt.
3. Install oil cooler on engine or substitute it with some temporary hose setup.
4. Install aftermarket oil pressure gauge in place of factory gauge.
5. Put some oil into engine. No need to be full but enough for oil pump to pick it up from pan.
6. Run oil pump with hand drill to build up pressure. Any cordless drill will do. Just need some way to mount 17mm socket to it to turn oil pump.
7. Rotate cams multiple turns when oil pressure is up. As long as crank stays at 45 degrees cams can and should be turned around 360 degrees several times.
8. Check how high oil pressure builds before relief valve kicks in. Around 8 bars is normal.
9. Line up cams, rotate crank to TDC, install cambelt etc. and engine into car.

Step 7 pressurizes every lifter, lubricates every bearing surface etc. in engine. 928 is only engine I know where oil pump setup allows this to be done easily. No 928 engine should ever be started after rebuild without doing this simple procedure. Once done first startup is like any other from lifters point of view. They are primed and full of oil from first turn of the starter.