[Grand Designs] project - my ETZ 250

[Blurredman]

If the gasket tore in a specific way, ie split longways type of break, rather than a straight up break like it was cut, then you can overlap the two pieces indeed with items that Puffs has mentioned.. Then apply to the crankcase.

[Puffs]

Following a biased and flawed moderator choice (someone posting aggressive personal attacks is rewarded, while my technical posts are removed - behind my back & without any justification!), I have withdrawn from this forum.

[dirtsurfer]

Those gaskets are easy to break. Best to lay the bike on its side when installing. Yes it has been hot. I was out on the ETZ today looking for the stingray swamp swimming hole in Penrose forest. Did not find it so had to ride back dusty and sweaty.

A bit cooler down your way though?
Stingray Swamp sounds interesting Bruce . I look forward to exploring the area with you.

I wonder if the gear lever off the DR (in the background) would fit?

Nope , the DR selector shaft is thinner

.....
In terms of locking the crank.. I use rope down the plug hole. This stops the piston getting to TDC so it locks.

Brilliant ! That's what I love about forums like this. The bike was actually parked near my rope bucked when I read your post.
Now I have torqued down the clutch side and the Vape side, adjusted the clutch (for now! ) and fitted the tacho drive. Poured the drained oil back in.


Spent a few hours mucking around with wiring. Tomorrow I might go and buy some fuel and see if it starts.

[dirtsurfer]

and it does https://tinyurl.com/ybdv8wx2

It took 4 or 5 kicks to get it going

I know about the dubious value of the expansion chamber but I was ordering some parts and couldnt resist. I have the original exhaust but needs decoke, clean and finishing

[Puffs]

Following a biased and flawed moderator choice (someone posting aggressive personal attacks is rewarded, while my technical posts are removed - behind my back & without any justification!), I have withdrawn from this forum.

[Andy_C]

Re expansion pipes.

The short one (which seems to be the only one you can get) will fit to the standard bracket - you may need to bend it a little but it will fit, at least it did on mine.

Being a short pipe you will find that it robs the engine of what little low down torque that these engines have, instead of starting to pull at around 3500 RPM it will move it up about 1000RPM, it also robs some of the mid range, however you will find that the motor revs much more easily and you can exceed the red line (6500RPM?) easily - not much point as you do not get any more power.

Basically with these short pipes you have to be revving the motor pretty hard to maintain a decent pace.

My "solution" was to weld a 10" (or therabouts) long cylindrical section in the middle of the pipe, and as far as I can feel it now works at least as good as, if not better than the standard pipe - I'll post up a pic of the pipe sometime if anyone wants to see it.

Just thought you might find my experience useful.

[Blurredman]

Just so you know, ETZ 251 and ETZ 250 have different length gear levers..

You'll obviously want the ETZ250 (?), which is the longer of the two.

[dirtsurfer]

Just so you know, ETZ 251 and ETZ 250 have different length gear levers..

You'll obviously want the ETZ250 (?), which is the longer of the two.

I've ordered 250/251/301!?. I guess I'll find out if it fits when it arrives.

Re expansion pipes.

The short one (which seems to be the only one you can get) will fit to the standard bracket - you may need to bend it a little but it will fit, at least it did on mine.

Being a short pipe you will find that it robs the engine of what little low down torque that these engines have, instead of starting to pull at around 3500 RPM it will move it up about 1000RPM, it also robs some of the mid range, however you will find that the motor revs much more easily and you can exceed the red line (6500RPM?) easily - not much point as you do not get any more power.

Basically with these short pipes you have to be revving the motor pretty hard to maintain a decent pace.

My "solution" was to weld a 10" (or therabouts) long cylindrical section in the middle of the pipe, and as far as I can feel it now works at least as good as, if not better than the standard pipe - I'll post up a pic of the pipe sometime if anyone wants to see it.

Just thought you might find my experience useful.

Yes a picture please

[Puffs]

The problem fitting the bracket is that standard both connections are to the rear of the shock, while here the connection to the pipe is forward of the shock.

Dirtsurfer, do you know which clearance your new RAM piston has?

[Blurredman]

Just so you know, ETZ 251 and ETZ 250 have different length gear levers..

You'll obviously want the ETZ250 (?), which is the longer of the two.

I've ordered 250/251/301!?. I guess I'll find out if it fits when it arrives.

To be fair the ETZ 250 lever is longer, but also barely misses the tacho drive.. I think they realised this later on when they shortened it. The shorter one on the 251 can be easier to use if you have big feet, as this prevents the tacho housing interfereing with your foot trying to change gear...

Either way.. I am not even sure which I prefer.. The longer one for the leverage, or the shorter one for less interference ......

[dirtsurfer]

The problem fitting the bracket is that standard both connections are to the rear of the shock, while here the connection to the pipe is forward of the shock.

Dirtsurfer, do you know which clearance your new RAM piston has?

I think the bloke that rebored the cylinder told me .06

[dirtsurfer]

and it does https://tinyurl.com/ybdv8wx2

...

A couple more setbacks

For reasons too complicated and not really interesting enough to post here; I was unable to access my bike for about 24 hours after I created that video. In that time the entire litre of premix drained from the leaking fuel tap. When I could access the bike again, I tried to restore the fuel tap with some miscellaneous O rings that I had laying around. This made it leak worse. . I hoped one of my BMW taps might work but they're bigger.

I had a look at my original muffler, tapping the input end on the ground , about 300 grams of rusted material fell out. When I shake it I can hear more, inside sifting through what is left of the baffles. At the output end I can feel decaying material with my finger

[Puffs]

Following a biased and flawed moderator choice (someone posting aggressive personal attacks is rewarded, while my technical posts are removed - behind my back & without any justification!), I have withdrawn from this forum.

[Andy_C]

Dirtsurfer - you wanted a pic of the modified spanny on my ETZ.

Here it is attatched to the ETZ.

As I say it works just fine in my opinion - possibly even better than standard.

I have been told it looks awful - IMHO looks no worse than the standard "drainpipe" but each to his own.

[Puffs]

Following a biased and flawed moderator choice (someone posting aggressive personal attacks is rewarded, while my technical posts are removed - behind my back & without any justification!), I have withdrawn from this forum.