Valve Tappet too Small 1.6-1.8mm?

[posplayr]

Before hitting 9 grand, I think i would have made sure the cams spin freely. Plasti-guage is cheap as well.

[Guest]

Before hitting 9 grand, I think i would have made sure the cams spin freely. Plasti-guage is cheap as well.

It seems right as rain.

[BassCliff]

Well it's been 7 days and several hours but my baby is back together and she started with no hesitation.

Well, I've got two words for you....


Yeee Hawww!


Nice work. Thanks for sharing your success.


Thank you for your indulgence,

BassCliff

[posplayr]

Yeee Hawww!


Nice work. Thanks for sharing your success.

Now that is the kinda talking that will see 12 GRAND

I guess I'm to blame, I suggested sandpaper.

If he did not get those cams to spin easily he could be in for a long walk home.

[Nessism]

Roland,
So what did you do about that valve that didn't have any clearance? Regarding that, did the valve bucket spin freely? I'm wondering if the bucket could be binding which is leading you to think the valve is sitting high and requiring that thin shim?

[Roland]

Smooth as a babies butt

Smooth as a babies butt

Here is are some images of my cleaning up of the journals. The Journal Cap was the one that was really beyond repair. Note when the cam was not pushing on the tappet and the cam was not under pressure the gap was on the Cap(top) side so the cap took the worse of the wear.

The replacement Journal Cap fit perfectly. I have ordered the Pastigauge to verify all is perfect but the cam fit feels perfect.

At the moment I am saving my new gasket adn using the original gasket until I get in the proper shims to get all the tappet gaps within perfect spec.

Today I will run engine tests to see how everything is working but turning it by wrench all appears to working quite well.

[Roland]

Smooth as a babies butt

Here is an image of my test fit of the replacement journal Cap. Measuring multiple key points between the caps revealed they were milled exactly the same or at least as close as I can measure with my digital caliper with .01mm precision.

[Nessism]

So what did you do about the shim on that one valve?

[Roland]

Valve # 1 beyond spec.

I got the two smallest ones they had at my local shop to test out and to be able to get something close so I can get an accurate measurement. Unfortunately my local shop doesn't have all the shims I need to get her within spec so I will be surfing the Internet.

I-1 1.75 .35-.38 Too Loose Need 1.95
I-1 2.15 .04 = too tight

At the moment I have the 1.75 installed because I don't want it to be too tight for my running tests. Now I just need to find some shims online in and purchase 3-4 in the range of 1.90-2.10 so I can get it as close as possible. I suspect it will take me another week before I can ride her more than just in front of my house.

Valve-----Shim-------Gap-------Result
E-1-------2.50------.-08-.10----Too Loose Need 2.5x
E-2-------2.60-------.06-.08----Good
E-3-------2.60-------.10-.13----Too Loose Need 2.60x not 2.65 &not 2.60
E-4-------2.55-------.05-.06----Good

I-1-------1.75-------.35-.38----Too Loose Need 1.95
I-2------- 2.70x-----.05-.06----Good
I-3-------2.90-------.03-.04----Slightly too tight Need 2.85x
I-4-------2.70-------.06-.08----Good

This mornings test revealed a really good sounding engine with the exception of hearing the cam #1 slapping the tappet. Now the engine noise is coming from the exhaust and not so much the engine.

[Nessism]

There is no such thing as a shim thinner than 2.15. Where did you get a 1.75 shim? If you are getting .04mm clearance with a 2.15 shim you can run it and call it done.

[Roland]

Shim Sizing

Actually there are shims to nearly any size you need in nearly any diameter or shape you need. Just specific range that our bikes use do not go that small but some of the higher end sports cars use shims as well. My local shop had those two that I bought.

In my measurements if there is only one measurement but no range it indicates my smallest size that did not fit. Thus with the 2.15 my .04 feeler would not go in.

By my best calculations the one I need is precisely in the center of the two that I got from my local bike shop. I went with the smaller because I did not want any additional pressure the new Cap before I get the correct size. If I have to I can have one made at my job. At the college I work, we have a mechanical engineering college that has all the precision machining gear to make us men drool.

[zathros]

You could surface grind the oversize one at school.
Congratulation in you endeavor to persevere.

[Roland]

Shim Sizing

I was considering having the 2.15 ground down at the machine shop.

Here is an place in California with an online site that indicates they have shims from 1.35-3.5mm in .05mm steps. Not only that but they do shim exchange so you can exchange up to 5 shims for only $12.

Alba Action

[Steve]

Here is an place in California with an online site that indicates they have shims from 1.35-3.5mm in .05mm steps.Alba Action

I just looked at that site and they don't have the correct DIAMETER shims.

They list 29mm shims but not the 29.5 shims that we need.

.

[Roland]

Shim Sizing

Yea, I noticed that the site didn't list our diameter 29.5mm as well but with the huge variety that they do have I am guessing they will have ours as well.

That and their comments "If you can't find it give us a call". I tried to call them today but they were closed, I will be giving them a call tomorrow and will report back my findings. (Although I will also try and get some time to visit the Mechanical Engineering machine shop as well)

These are the most common sizes, but we have many more sizes available. Please contact us if you don't see the size you need here.

IF YOU ARE NOT SURE THE DIAMETER SHIM YOU NEED, INDICATE VEHICLE MAKE, MODEL & YEAR WHEN ORDERING AND WE'LL GET YOU THE RIGHT ONES.