Exhausting

We have some Onan generator silencers and flexi pipes on ebay, look for stuff under user name 'listerdiesel',

Silencers have screwed ends and a drain plug to take out condensation.

Peter

-- Peter A Forbes Prepair Ltd, Rushden, UK snipped-for-privacy@easynet.co.uk

What a fortuitous posting. Having fired up the small (chinese, diesel) genset the other day it was decided it is rather noisy and hauling it outside is a bit of chore and if the weather is bad (gales, snow, rain etc) the electrics might object. So I was thinking of making a permanent space in the garage for it and piping the exhaust out through a hole in the wall and possibly through another silencer.

So would one of these Onan silencers be OK on a diesel of similar cubic capacity but running at 3000rpm?

How flexi is the flexi pipe? The current exhaust is on the back side of the generator that would be up against the wall. I'd probably run it along the wall a bit before exiting in a sort of S shape to enable the pipe to be attached and then bend as the genset is pushed back.

How long, both the bit on the silencer and the extensions? What is the internal bore, the current silencer has a short stubby pipe 31.5mm in dia for the outlet. I think the hardest part of this excercise is going to be fixing onto that...

The short bit on the silencer is about 500mm long or so, the extensions are

They are flexible in that you can bend them, but not 'wobbly' flexible if you know what I mean... :-))

Pipe threads look like 1" BSP, but the extension and engine connections are sleeves and not threaded.

Peter

-- Peter A Forbes Prepair Ltd, Rushden, UK snipped-for-privacy@easynet.co.uk

I would look for a silencer from an engine of similar power, capacity and number of cylinders. There's very few cars with 1.25" exhausts these days. A wander around a classic car show may help. ISTR the 850 Mini and possibly the 998 version had 1.25" exhausts. You could also look at A30 or A35 and early spridgets. You could also make your own with a few pices of nested pipe arranged so the gas is forced to flow back and forth a few times.

John

The reliant robin would be a good place to look.

For easy of mounting size, the Hillman Imp (not the sports version...) exhaust box could well be a good place to start.

An update to this posting.

In the end I purchased a new one piece exhaust for a mini 1.25" with two in line silencers.

Has now been cut up to make an exhaust to fit the Bristol 10.

What a transformation in noise. Now no fear in annoying my neighbours

All the pipe, two silencers and a couple of hours cutting and welding all for =A325.

Dikster

P.S. Before anyone asks, no it does not sound like a mini

That's a shame

John Mini 1400cc, S head, 2 x 1 3/4" SU's, LCB, 3/4 race cam + other bells & whistles.