Milwaukee Midget

[Milwaukee Midget]

Pulled the head – I guess it was running rich –



And I have NO idea what’s happening here –







Appears to be steel – very springy, magnetic – I was hoping to move forward this year without having to disassemble the short block, but if some of this crap is in my oil system, I can’t run that risk.

Well, I was looking for something to do, anyway.  

Guess I'll start by pulling the valves.

[38flattie]

That's strange!

Let us know what you find.

[Milwaukee Midget]

I should rephrase that - the coiled shavings are not magnetic, but a magnet will pick them up.  They look like shavings from a machining process, but aren't brittle enough to be cast iron.  I didn't have anything steel machined in the engine, and there would be no way for pieces this size to have worked their way through the rocker shaft.  The valve springs don't appear to be damaged, and the rockers are aluminum. 

I've got a bottle from Blackstone Laboratories to send an oil sample for testing.  I'll see what that turns up.

[Captthundarr]

Chris, they look like the spring thats inside of some seals. They are found inside and help support the seal lip. That is turly odd.

[Milwaukee Midget]

Frank - good call.  That's exactly what they are.  On the A-Block, the springs are on the outside of the rubber seal.  The valve is seeing almost 1/2" movement, and very fast opening and closing events with my cam and rocker geometry.

Note to self - stock seals don't like 9k.

And that would partially explain the excessive carbon buildup, too.

With luck, I'm only out a set valve guides and maybe tappets.

Better in Milwaukee than Wendover.

I'll pull the valves and file a report.

Frank - thanks for that insight - I can sleep tonight.  

[grumm441]

Chris
I would say the valve seals don't like being hit by the retainers at 9k
Crank it over by hand and have a look how close the the retainers get to the seals
and of course everything gets floaty at 9k
Consider taking the springs off all of them, after all, how much distance will the car cover
does it need to seal that well
And take the sump off and have a look at the oil pickup while you're at it
G

[Captthundarr]

Your welcome Chris. I don't build a lot of "high perfomance" motors but work on some busted ones with wierd problems. See ya in Ohio.

[Peter Jack]

Chris, I think Grumm is probably on the right track. There's probably no reason why the guides should have suffered although it's always worth checking. Good luck!

Pete

[wisdonm]

Hi Chris. Glad it's not serious. Use the Teflon seals without the springs.

[Milwaukee Midget]

Hi Chris. Glad it's not serious. Use the Teflon seals without the springs.

Don, let me see what it looks like when it comes apart.

So . . . the Brew City Road and Track Timing Association Flying Circus (BCRTTAFC) has meetings just up the street from where I work?

On Tuesdays?

With 2 for 3 rail drinks?

And an open jam?

That's convenient. 

[Dr Goggles]

Hi Chris. Glad it's not serious. Use the Teflon seals without the springs.

Don, let me see what it looks like when it comes apart.

So . . . the Brew City Road and Track Timing Association Flying Circus (BCRTTAFC) has meetings just up the street from where I work?

On Tuesdays?

With 2 for 3 rail drinks?

And an open jam?

That's convenient. 

So, are you guys conversing with secret hand signals or invisible ink or something?.....

[wisdonm]

 That's Brew City Road and Track Timing Association Flying Circus Band, unofficially.

[Milwaukee Midget]

Sorry, Doc - We're speaking Mowogish.

It's kind of a dialect.

Probably the "2 for 3 rail drinks" that stumped you, aina hey?    

[Dr Goggles]

Oconomowogese?

Oconomowogali?

Oconomowogish

[Tman]

I just like saying Oconomowoc and Chequamegon.