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 Crankcase breather/Reniflard is it duff? 
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Joined: December 3rd, 2019, 7:28 pm
Posts: 18
Post Re: Crankcase breather/Reniflard is it duff?
Thanks Eirik, a good endorsement from you. Whilst we are in ‘lockdown’ it’s a good time to get some goodies especially if it helps maintaining the 2cv.
I had a 20 mile run in the car yesterday, troublefree & it ran, I’m slightly hesitant to say this but, very well. It seemed smoother & quieter with the repaired breather, but maybe just my imagination. I have to say I am more hopeful than before, time will tell.


January 19th, 2021, 1:59 pm
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Joined: March 21st, 2013, 12:04 am
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Location: Exeter, Devon
Post Re: Crankcase breather/Reniflard is it duff?
may be a good time to check your air filter :)

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January 20th, 2021, 8:10 pm
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Post Re: Crankcase breather/Reniflard is it duff?
@subarupete

Looking back at your images, I note you appear to have added an additional round plate to attach the reeds to. Was there a reason for not fitting them to the original part?

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If you can't fix it with a hammer, it's probably electrical (or, an electric fuel pump!) ....


April 7th, 2021, 12:32 pm
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Joined: March 5th, 2009, 6:23 pm
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Post Re: Crankcase breather/Reniflard is it duff?
From recall ? The round part is a base for the
“reeds”so that the nuts/bolts can be done up tightly.


April 7th, 2021, 2:18 pm
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Post Re: Crankcase breather/Reniflard is it duff?
Thanks Pete, I see how you have made it now :)

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If you can't fix it with a hammer, it's probably electrical (or, an electric fuel pump!) ....


April 7th, 2021, 9:09 pm
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Joined: March 21st, 2013, 12:04 am
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Location: Exeter, Devon
Post Re: Crankcase breather/Reniflard is it duff?
So .... Shamelessly stealing Petes idea .....

I like the reeds, but I didn't like that they didn't have a stop and could be over stressed. So designed a fixing and stop plate combined.

Prototype is printed in ABS, which I would be very surprised if it survived the heat. This is in it's infancy, so don't hold your breath. Thinking of perhaps creating a mould from this and could either be created in white metal, or a heat resistant epoxy.

Thoughts please .....


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If you can't fix it with a hammer, it's probably electrical (or, an electric fuel pump!) ....


April 8th, 2021, 7:09 pm
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Joined: March 5th, 2009, 6:23 pm
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Post Re: Crankcase breather/Reniflard is it duff?
What temp does the printer run at?
Don’t think the breather gets very hot?
Will run my engine and measure with IR gun....


April 8th, 2021, 8:34 pm
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Post Re: Crankcase breather/Reniflard is it duff?
Would be good if you could get a IR reading. :)

Its also how hot oil gets when sprayed on it though. Probably warmer on the inside than the outside.

And how much the oil being hot effects the ABS.

Edit

I print at 230*c, but I don't know how much I trust it over 85c when under load.

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If you can't fix it with a hammer, it's probably electrical (or, an electric fuel pump!) ....


April 8th, 2021, 9:40 pm
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Joined: March 5th, 2009, 6:23 pm
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Post Re: Crankcase breather/Reniflard is it duff?
Ran the engine till the block at 50deg C oil with oil filter at 80deg C, breather at a cool 21deg C.
On the move it’s in the air flow, so I reckon it does get that hot, so ABS is ok from a heat perspective but Oil mist may attack it?
Test bed available...


April 9th, 2021, 11:03 am
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Joined: March 21st, 2013, 12:04 am
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Post Re: Crankcase breather/Reniflard is it duff?
Lets see how far I get with it .... :D

Pete, what did you do regarding the seal between the two halves?

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If you can't fix it with a hammer, it's probably electrical (or, an electric fuel pump!) ....


April 9th, 2021, 2:24 pm
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