Ferrari Hydraulic Lifters 149750, a detailed look

Doubtful that vacuum on the outer body would do much. A proper tool for the piston will grip pretty well. When I tried prior, I just looked for something in the shop that would work. I was too lazy then to make something

We don't have a manual lathe (should get one). But I will have one of my guys knock this out during the week between jobs - we have a job ending in a couple days.

I do have a vacuum generator so it should work well

 

The inner piston area is .14, the outer diameter is larger so the area will be a bit larger.

If I get a chance today I will use some weight to determine the load needed.

It's such an easy part to make that it's worth a try. Might take my guy Paul 1/2 hour to make

 

I was replying to you last post John but it vanished

I have a vacuum generator. Yep, already looked to see it I had tubing that would fit, but I don't

I just checked the force with some blocks - it's approx 6 lbs. But, that is also on clean parts. So, add some oil friction and possible grime and yeah, it's probably not a safe bet so back to the sure method of a collet

 

I was not going to apply it there without an o-ring seal on the outside of the piston, so nope

 

FBB's pliers idea was good for sure. I looked yesterday at parallel jaw pliers and possibly machining the jaws. It's a good idea and I'm happy to admit it. But, I feel better about the secure nature of a collet.

As to banging them on board - look that the damage to the edge (probably not a huge deal). I'll send you my 50 (40 + 10 spares) and you can bang away, John

 

Hey Paul,

They don't list the ID that I can find and they are not smooth - but thank you very much for this coz I did not know these exist and I need a set for my seals

 

Not that I know of but see these clamps - they are linear pull some a concept like this could be used.

Straight Line Action Clamps - Push & Pull Clamps | DESTACO

As far as the threads, that's a very easy machining operation and I don't think more that a turn or so will be needed.

 

The gripping area (amount of piston protrusion) is very small, about 0.08". The gripper needs to be precise.

 

Hey Jim,

They must be equivalent and perhaps a superseded part number.

Eurospares lists 149750 for 355

Ferrari 355 (2.7 Motronic) - Timing - Tappets and Shields: Page 005 | Order Online Eurospares

Algar lists 195017 for 355 as well as 360

https://algarferrari.com/store/parts/6-8-cylinder/355-group/f355-m2-7/table-5