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Home > Rod trials and testing > AFR Sample Chambers - Take 2 - R

Rod S

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5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

26th Jun, 2009 at 05:00:48pm

(retrieved, I lost the file last night while editing it in Word......)

OK, so blatant Plagiarism from Paul, but I wanted it to fit to a standard T3/Metro setup.

Blue Peter at the moment as the final bit of tube I need (for the sample chamber) hasn't arrived yet....





It should just about clear all the clutch hydraulics with the pre-verto setup and returns further away from the turbo.

I've used exactly the same pipe/tube sizes as Paul - so we can compare results - but have the option of increasing the sample tube bore slightly.

EDIT - obviously only one sample tube in the piccys, couldn't get enough bits of wire string to hold the second one for the photo :)

Edited by Rod S on 27th Jun, 2009.

Schrödinger's cat - so which one am I ???

Rod S

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5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

27th Jun, 2009 at 06:21:50pm

So I've welded most of it up....

Ran out of argon before finishing.....



I've raised the sample chambers... apart from making getting the LSUs out to do the FAC easier, it might also allow the bulkhead brake limiting valve to be fitted..... not a problem for me as I will be using the one on the rear subframe, but maybe of interest to anyone wanting to copy this.....

Schrödinger's cat - so which one am I ???

Paul S

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Formerly Axel

Podland

27th Jun, 2009 at 06:27:53pm

Looking good. No possibility with reverse flow up the sample pipe with that setup.

You're happy that you will be able to fit it with the engine in the car?

My Argon bottle is showing zero but it still has some left. Difficult to tell exactly when you need to change it.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Rod S

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5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

27th Jun, 2009 at 06:38:41pm

On 27th Jun, 2009 Paul S said:
You're happy that you will be able to fit it with the engine in the car?


No.....

I said in an earlier post, but I think it got lost while I was editing it....

No. it will go in assembled on the engine - flip front will allow me to do so.

I think it could be modified slightly to allow fitting in the car though.

My main criteria was to have the LSUs easily removable (in the car) for FAC.

Schrödinger's cat - so which one am I ???

Rod S

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5988 Posts
Member #: 2024
Formally Retired

Rural Suffolk

28th Jun, 2009 at 07:24:56am

On 27th Jun, 2009 Paul S said:
 No possibility with reverse flow up the sample pipe with that setup.


It only occured to me last night after I'd shut the PC down......

It wasn't a deliberate attempt to "improve" on your design, it was pretty much dictated by the use of the Metro old fashioned T3 setup, ie, having to go in below the cast iron elbow.

BUT - I've now realised that because of that constraint, I unwittingly designed it so it will also work with the standard turbo SU setup....

Maybe someone might want to copy it and see just how far out the AFRs go (between inner and outer cylinders) with an SU under boost.

Schrödinger's cat - so which one am I ???
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