Oil slurper

We just did the big ride Perth to Phillip Island and back.
The Rex used an excessive amount of oil - around 4 litres, for the 7600km round trip.

It has new plugs (and seals obviously), new valve cover gasket, and Kwick's No Flow plugs installed.
Exhaust is black as.

Compression test is next, I think.

On the other hand, the ZZR1200 used about 1/4 litre. It also has new gasket and No Flows.

Bill.

Wow that is a bit of oil, but falls within the old measure- 1L per 1000km being 'normal'. My second ZRX (which never uses oil) was low on the glass the other day when out on a ride. (on centrestand) Checked it when I got home again and up top where it should be. Does your ZRX smoke at all? Wonder if valve seals are on way out- can't imagine rings could be the culprit.

Get your pals to ride behind you and ask them if they smell oil burn off. My mate has a VTR1000R,if you get behind him when he pins it you can smell the oil being burnt.

Look on the bright side. You'll always have fresh oil in it

Yep, no need for oil changes.

When riding behind, you can smell it, but only at high speed. And I agree, new valve stem seals may be the order of the day.
Exhaust has this nice thick sooty layer at the end.

My second ZRX (which never uses oil) was low on the glass the other day when out on a ride. (on centrestand)

Centre stand?


I had rings done at 50,000km when the pitted cams were repaired. Bike now has 123,000km.

My second ZRX (which never uses oil) was low on the glass the other day when out on a ride. (on centrestand)

Centre stand?

Yep. X2. After considerable stuffing around have made my own. MK2 is much better than MK1. (need to up date Mk1 to Mk2) Going to manufacture them once I can secure required parts.

ZRXtwinStands.jpg (137.54 KiB) Viewed 16766 times

And give ChuckC some competition on the ZRXOA list?

Yeah if he ever made any!!!!! Quite a few people want his blood. My design is nothing like his.

Mine was blowing a little smoke on the down change when we did a track day earlier in the year, then again it WAS getting ridden a bit harder than normal street riding. I noticed it when I was following when Rod and I swapped bikes for a session, Rod said it had been doing it in the same spot when he was behind me.

I just had all the valves shimmed and it doesn't seem to be doing it now.

I had all my valves shimmed before we rode over to PI.

I finally got around to taking the Rex apart (had to go on holidays first to South, Central and North America).
I think it has been using a bit of oil.

Valves:


Pistons 1, 2 and 3:


Piston 4:


I am getting the head cleaned up, valves lapped, valve stem seals replaced, and new rings for the pistons.

How is the rebuild progressing, and can I ask how much it is costing?

The bits are still at the shop. Will know more later this week.

I just heard back from the shop. The exhaust valve seats are pitted, some more than others. They need to be re-cut, usually at around $40 per hole.