late t4 rocker arm washers

[SGKent]

anyone know where to get new rocker arm washers for T4 motors? Don't need a whole kit - just trying to locate new unworn spacer washers. Right now I am running OG hydraulic / GE style solid spacers but all my spacers are worn thin and I'd like to add some insurance against failure in this area. I know about the valve shims being substituted but would like something more like the original.

the GD & prior with springs took 025-109-435
the GE motors with solid spacers took 021-109-437
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[fusername]

I would measure the stack you are running and check out mcmaster for a shoe in. If you are feeling frisky go w/ a bronze or sinterd metal to lower friction here while running a tighter gap to control the rocker loads. I may go this route on my motor with slightly more lift on the cam, and if I have no failure use it on my future big bus motor which will use much more lift.
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[phoneguy]

Has anyone found these ? I have one rocker arm washer missing and have been unable to find a replacement. I will buy the whole assembly but I can't seem to find that either.
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[SGKent]

(bump)

the T4 rocker arms have a hardened wave washer 021 109 437 on either side. I have been using the best ones from what I was able to collect but they show wear. I'd like to install new ones. The T1 are slightly a different size. What is everyone using for those washers?

021109437 20,6X26.5X0,5; 70
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“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin

[raygreenwood]

What you a re looking for are races for needle style thrust bearings. They come in ID and OD toatch many sizes.....come in numerous thickness and are hardened and precision ground usually on both sides.

The best place to find them is a bearing dealers. While McMaster carr sells a wide range of needle thrust bearings.....they do not list the actual thrust washers. They list sold seperately. Ray

[Wildthings]

Wonder if they are the same as used on Vanagon WBXer engines? You could also check with places like Pelican Parts.

[SGKent]

they are wavy. It looks like a flat washer goes between a rocker arm and tower, then a wavy , spacer, and wavy, then another flat washer between the next rocker and tower.
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[raygreenwood]

[1975 Kombi]

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[Wildthings]

[raygreenwood]

I would assume as SGKent mentioned....and because that is the solid spacer in that diagram....which has no spring and you have to keep the rockers loaded in one direction with something.......that part 12A is a "wavy" spring washer.....correct (i am asking because I cant tell from the diagram).

At least it has the size. I will see what I can find. Ray

[SGKent]

[raygreenwood]

[Wildthings]

The spacers sold by The Type 4 store just use flat washers.

http://type4store.com/rocker-spacer-kit.html

[surfwagonorangevw]

What about using the solid spacer from Raby , the type 4 store . You get rid of the spring and the wave washers , leaving .006 " clearance if I recall correctly .

[SGKent]

[otiswesty]

[Wildthings]

[raygreenwood]

I have a set of spacers from the type 4 store that came with my cam kit.

The ones in my pictures are from about 14 years ago.

Jake originally...and the type 4 store now (IIRC)...tell you up front that these are not a drop in part. They are slightly long so that you can adjust your set up for the variance of rocker arm castings and geometry needs.


The spacers from the type 4 store simply use a thrust washer...and correct set up which may be between .002" and .006" depending on your engine IIRC.

And...as SGKent notes....using a washer between the spacer and rocker cuts rotation speed wear....just like the shim pack on your flywheel.

I would think they would work well with or without a flat bushing/washer...but in the long run you would get less wear to both parts with a washer.
Ray

[SGKent]

I've been rethinking this lately, especially since yesterday afternoon when cleaning some valve train parts for a member here.

The original design is washer-spring-washer between the rocker arms. I really don't know why VW set it up this way but it was that way on 914-4 and 912-e engines also. The washers rarely break or wear out.

The next style was for the engines with hydraulic valves. The parts photos show it consisting of rocker-flat washer-wavy washer-spacer-wavy washer-flat washer-rocker. The wavy washers are no longer available but the other parts are.

The T4 store had the kits made to emulate the late style but the engine builder set the play. VW set it up to hold the rockers in place with the wavy washer. The clearance on the T4 store is said to be .006".