Minor Exhaust Flatulence......

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Luxobarge
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Minor Exhaust Flatulence......

Post by Luxobarge »

Now, some may not agree with this, but in my opinion one of the most endearing characteristics of the Minor is the parp-parp "farting" noise they typically make on the over-run, e.g. when changing gear etc.

Except that ours doesn't do it! It's a pretty bog-standard 1965 car, with unmodified 1098 engine, and it has what looks to be a brand new stainless exhaust on it.

Anybody know what makes them do this, and why mine doesn't? Anything I can do to make it "fart"? :lol: :lol:

Just curious - hope nobody takes offence at my description, it just seems the right word, eh? :wink:

Thanks!
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mike.perry
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Post by mike.perry »

Are you sure it hasn't got a double silencer system on it? That will spoil the exhaust noise although some cars seem to have more of a rasp than others. I recon it is down to the engine timing
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Onne
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Post by Onne »

Does it have just the one silencer?
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Dean
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Post by Dean »

Did someone say on here recently that if the exhaust was an inch longer it wouldn't "fart". They felt maybe the design engineer had a sense of humour. Maybe your exhaust is longer than the original?
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Luxobarge
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Post by Luxobarge »

Hmmm, interesting - I think it's a two-box system, I'll have a check (haven't had to get under the car much so far, and I can't remember! :oops: )

Interesting about the "one inch too long" idea too - the tailpipe certainly looks long-ish, I'd have no problem with cutting an inch off to see if it helped!

Thanks a lot! :D :D
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Onne
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Post by Onne »

it won't fart at all with a twin box system...
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Luxobarge
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Post by Luxobarge »

Onne wrote:it won't fart at all with a twin box system...
Ah! That sounds definitive - shame, anybody want to swap???

Thanks! At least I know now..... :D :D :D
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Onne
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Post by Onne »

Twin box tend to be larger bore as well... what kind of manifold have you got?
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rayofleamington
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Post by rayofleamington »

I'm not so sure about the length issue - my 71 pick up does it really well and the exhaust after the silencer is very different.
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MoggyTech
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Post by MoggyTech »

Luxobarge wrote:
Onne wrote:it won't fart at all with a twin box system...
Ah! That sounds definitive - shame, anybody want to swap???

Thanks! At least I know now..... :D :D :D
I'll swap my extremely loud single box stainless system for a two box stainless system. My traveller farts so loud on over run the car behind falls back a hundred yards, probably as the driver fears an imminent explosion. :D
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alex_holden
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Post by alex_holden »

MoggyTech wrote:
Luxobarge wrote:
Onne wrote:it won't fart at all with a twin box system...
Ah! That sounds definitive - shame, anybody want to swap???
I'll swap my extremely loud single box stainless system for a two box stainless system.
Sounds like a win-win situation to me! :)
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HUMBLEPIE
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Post by HUMBLEPIE »

I've just had a new Bosal system single box cost £29, not to dear if you want the fart back in your life.... :D :D
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Luxobarge
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Post by Luxobarge »

Hehe - well thanks for all the replies, I just had a double-check and in fact it IS a single box system, not double!!!

So does that mean I do have the potential to fart, as it were?

Shall I try cutting off 1" from the tailpipe?

Manifold is standard cast iron affair for this 1098 engine - are there different sorts? Mechanically, this is a totally standard engine, so why doesn't it fart?

Thanks a lot for your help - even though most of you probably think I'm slightly mad..... :lol: :lol: :lol: :lol:
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alex_holden
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Post by alex_holden »

Luxobarge wrote:Shall I try cutting off 1" from the tailpipe?
I don't think that will make a difference.
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mike.perry
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Post by mike.perry »

Check your engine timing and vacuum unit. The more advance, the bigger the fart. That's my theory anyway.
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Luxobarge
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Post by Luxobarge »

mike.perry wrote:Check your engine timing and vacuum unit. The more advance, the bigger the fart. That's my theory anyway.
Mike - thanks for that, I will do so and report back!

Cheers :D
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Luxobarge
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Post by Luxobarge »

OK, I wound the ignition timing up a turn and a half, but no difference - haven't had time to check it properly on a strobe yet, but it's more advanced and still not farting!!!

Cheers! :D :D
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Dean
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Post by Dean »

Could it be you have a lady Moggy? Lady's never blow off, I believe lady Moggy's aren't any different.
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Leo
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Post by Leo »

Check your Distributor Vacuum Unit

Could be as simple as that

Leo
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Luxobarge
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Post by Luxobarge »

Dean wrote:Could it be you have a lady Moggy? Lady's never blow off, I believe lady Moggy's aren't any different.
Hehe - you haven't met my wife, have you??

:lol: :lol: :lol: :lol:
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