Yes, it can be the case that induction noise is louder than the exhaust, especially with a Weber or Dellorto.
I was pinged for excessive noise once at a meeting at Philip Island. The EPA guy told me to forget about the exhaust because the noise was a combination of straight cut gear whine and induction noise. A hastily made up baffle box from a cardboard beer carton, fitted under the bonnet and around the Weber reduced the noise to an acceptable level.

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Curly
'64 Cooper 'S' (Group Nb spec)
'67 Mini Marcos GT www.mm7056.wordpress.com

I used to run a straight through 2" system and the car was fairly noisy but I am using a two piece RC-40 now and that has quietened it down a lot but still has a nice tone to it.

Makes it a nicer car to drive over distance now.

My original exhaust was way too loud, could couldn't talk at 110kph, and you could actually feel the tingling in you ears. I replaced the muffler with a larger straight through muffler which sounds much better and got a couple of hp out of it as a bonus.

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One should never skimp on the zip ties.

Joe
Yours would probably do well up against the Toyoata Corona up and down main street Gulgong. Shorter cruising too. Each lap of town is less than a kilometre.

Mokesta had the RC40 rear box only (you could see through it if the outlet wasn't bent) and I added a straight through Hot-dog (resonator) now it is really good.

Camilla just had the RC40 rear box and was too noisy.

lol mike, i didnt make mine loud for that reason, when i bought mine it was loud with a cannon. i didnt like it so i juz got the straight through piping cause the benefit of a loud exhurst is people on the road can hear u coming and will look out for u

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oil leak?..what oil leak..that puddle under the car is just sweat from all that horsepower

I know Joe, I was just pulling your leg. Just make sure that those that hear you coming and look out for you arn't also driving cars with blue and red flashing lights.

I like a car with a "note" as much as anyone else but I have grown too old to really enjoy a car with "noise" - they both are quite different.

Merry Christmas Joe, and thanks for being a sport.
Mike

My Clubman GT was my only car for many years (standard exhaust and intake) and it was so noisy I could barely hear the stereo at 110kmh. Most of the noise came from the engine rather than the exhaust.

When I restore it I intend to Dynamat the whole thing to see if it makes it more liveable. It's nice to have that great exhaust note but I could do without the rest of the noise.

Pete

My S has a nice tone to it, and you can hear it coming from a fair distance away, but oddly it doesn't sound anywhere near as loud as my K from inside the cabin.

The K was completely original with absolutely nothing changed, so it had stock exhaust.

Personally i like the purr of the engine, the hammering of the tappets and the whine of the gearbox

If I use a 2 box system would I have to step up from 1 3/4 inch as planned or would it not be to restrictive ?

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1 3/4" diameter is the perfect size for most modified mini motors, only those really worked motors, race engines and big bore strokers will need bigger, and even then 1 7/8" or 2" is the right size.

Stick to the 1 3/4"!!

Cheers
M

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68 Deluxe.... it's shiny..... I like shiny!!

You really don't know which size suits best until you dyno it.
My 1360 (282 cam) needs 2", the 1412 (RE13 cam) ran best with 1-7/8".
But a 1-3/4" is the best starting point for any road motor.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

one other thing guys, did any of you guys have your cars tested, as in (forgot what they measure sound with / DB) test it with the meter,

i was going to get a 440mm (length) and 2" straight through muffler and see how that went, i was wandering if anyone had a part number of the one they used, local exhaust shop only had 2 they could order,

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any parts for a 76 clubby pm me or ring 0405 329 326

http://www.ausmini.com/forums/viewtopic.php?t=44717

nothing wrong with a thread resarection, its like your old man with his erection, only comes up blue moon,

b sides mini topics aren't like womans clothing and how blue over black can be so 2 weeks ago

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any parts for a 76 clubby pm me or ring 0405 329 326

http://www.ausmini.com/forums/viewtopic.php?t=44717