Exup and hi temp lube?

[SARGE]

ok.. small issue with my Thunderace.. seems the Exup runs at just sub nuclear temps and tends to cook the lubrication out of it and freeze it in place.. i gave it death with WD40 a few days ago when i got the trouble code on the tacho and it freed it up, but after a few hundy km's .. seems to have dried out again..


any other member of the Exup Brotherhood have this problem and how did you solve it? ( short of removal of the valve..i have a bad case of mod-itus (http://www.kiwibiker.co.nz/forums/showpost.php?p=1850863&postcount=21)and once the fairings are off.. so are all bets..)

[howdamnhard]

Maybe try copperslip or never seez.What does the worshop manual recommend?

[SARGE]

Maybe try copperslip or never seez.What does the worshop manual recommend?

i have the factory manual and it dont give any recommendations unfortunately

[Pussy]

Hey Sarge, if you're anywhere near an aircraft maintenace outfit, go see them and ask if they have any "Mouse Milk".
It's great stuff, it's used to keep turbo-charger wastegates free etc.
I reckon it would do the trick.

[bungbung]

Hey Sarge, if you're anywhere near an aircraft maintenace outfit, go see them and ask if they have any "Mouse Milk".
It's great stuff, it's used to keep turbo-charger wastegates free etc.
I reckon it would do the trick.

Perhaps try your local diesel & turbo type guy for a similar product.

[Katman]

Hey Sarge, if you're anywhere near an aircraft maintenace outfit, go see them and ask if they have any "Mouse Milk".


That almost sounds like the story of sending an apprentice for a bottle of K9P.

:msn-wink:

[Pussy]

That almost sounds like the story of sending an apprentice for a bottle of K9P.

:msn-wink:

It may sound like it..... but I shit you not!

[Katman]

If anyone so much as sniggers when I go and ask for some, you are soooo for it.

:msn-wink:

[Pussy]

Mouse Milk is available from Fliteline at Ardmore....

[bsasuper]

dosnt the exup valve use ceramic bushes that dont need any lube? sounds like it needs to be taken apart and cleaned.

[TonyB]

I'm reasonable sure that with my old FZR1000 you weren't supposed to lube them at all. They had special bushes- lubing them just caused them to gunge up and seize the valve.

[paturoa]

Found this

http://www.cartestsoftware.com/fz1/exupmaintenance.html

and he keeps talking about "copper grease"

Never heard of it before myself..

[Pussy]

Found this

http://www.cartestsoftware.com/fz1/exupmaintenance.html

and he keeps talking about "copper grease"

Never heard of it before myself..

Coppercoat... freely available

Waiting now for Katman's "I'm sorry, Pussy, I googled "Mouse Milk" and I see you weren't pulling my tit"! :)

[Katman]

Waiting now for Katman's "I'm sorry, Pussy, I googled "Mouse Milk" and I see you weren't pulling my tit"! :)

"I'm sorry, Pussy, I googled "Mouse Milk" and I see you weren't pulling my tit"!

:msn-wink:

[SARGE]

dosnt the exup valve use ceramic bushes that dont need any lube? sounds like it needs to be taken apart and cleaned.

it was a brand new unit in April when i got the bike..only done 1300 kms on it since ( i work too much)

[SARGE]

Hey Sarge, if you're anywhere near an aircraft maintenace outfit, go see them and ask if they have any "Mouse Milk".
It's great stuff, it's used to keep turbo-charger wastegates free etc.
I reckon it would do the trick.

yea.. im up at Ardmore once a month to get some Shell anyway.. i'll talk to the fellas up there.. i took the Ace to a local Yamaha dealer when the tacho started dancing and was told it needed packed with grease

[Pussy]

Just a thought, Sarge.... you haven't put any "green river" through the 'ace, have you?
The lead in it may foul the exup valve

[FROSTY]

Sarge. The man to have a yarn to is Paul In NZ. He did a truck load of work on an old FZR400 which has an earlier version of the same thing.
As I recall one issue was the cables and another was just plain ol seized up. Yon ace might have been "brand new" but its still a few years old
My experience is with 2 stroke power valves and I've spent a few evenings polishing them to a mirror finish so they open n close smoothly

[Paul in NZ]

I'm pretty sure you don't lube them - they are supposed to have a special bearing and is quite a loose fit anyway.

They do seem to pick up road muck though and the ends of the cables seem to get dry n mucky which does not help.

Personally - I put this in the same category as sparkplug threads. Most anything you use will just dry out and eventually make things worse except i this case it will also pick up rocks in grit.

pm me if you need any bits, there is a dude in the states thats a good source of spares.

[SARGE]

Just a thought, Sarge.... you haven't put any "green river" through the 'ace, have you?
The lead in it may foul the exup valve

umm... yea... just a bit...:innocent:


had some left over from the last tank on the FJ..

might have to switch back to the VP stuff

[bsasuper]

Grease + Carbon = Grinding paste

[_STAIN_]

Found this

http://www.cartestsoftware.com/fz1/exupmaintenance.html

and he keeps talking about "copper grease"

Never heard of it before myself..

Correct answer, Used the Copper base Never seize / or Copper coat product, Silver paste is not as good for this job. The bushes need to be lubed.

[Madness]

Correct answer, Used the Copper base Never seize / or Copper coat product, Silver paste is not as good for this job. The bushes need to be lubed.

Interesting, the Nickel based (silver) is the hi-temp stuff.

[roadracingoldfart]

Interesting, the Nickel based (silver) is the hi-temp stuff.

Get some Loctite (or similar ) Nickel antisieze and you can be assure it will lube anything that gets hot . It is designed to withstand 1200deg C so if you get a hotter section on a bick i suggest a trip to the fire dept.
Copper is good as well but remember to NEVER use copper grease on alloy . it reacts and will make a mess of any thread or sleeve fit .
Nickel is compatible with any metal at any heat up to the max range.

In saying all that , im sure the EXUP is a plain unlubed bush as stated further up this thread.