I have a 1293 running twin 1.5" SUs, perry extractors into 1 3/4" pipe. Yet, it still does not have that raunchy Cooper S bark. What pipes and mufflers are people running to get the nice crisp, crackle?

crappy example here... http://www.youtube.com/watch?v=RjLHjYmSVwU

_________________
http://www.rylstoneclassic.com

Change the Perry's to maniflo medium bore LCBs. Make sure the muffler is a Lukey or similar straight through muffler, no baffles (pick it up, look through it, if you can't see daylight on the otherside, pick another one. What you want is 1 3/4 inch diameter all the way through the muffler).

That should give you what you're wanting to hear

If that's not up to your standards then you need head porting, intake manifold porting for more ponies. More ponies, more noise.

I have gone the other way, trying to make her quieter. Have spent lots doing so without hurting performance. So far so good...

_________________
Lillee - 1969 Morris Mini K

So 1 3/4" pipe is OK?

_________________
http://www.rylstoneclassic.com

get stainless.

_________________
tim
68 Deluxe 1293, HIF44, megajolt/EDIS4, daihatsu alternator..

'a mini is for life, not just for christmas!'

same size stainless or is 2" getting silly?

_________________
http://www.rylstoneclassic.com

I'd stick to 1 3/4"

I had a stainless system from extractors back (can't remember what extractors were on it, if they were stainless or not).

Engine was 1360, weber carb. The bark that that thing made going through tunnels was amazing.

_________________
tim
68 Deluxe 1293, HIF44, megajolt/EDIS4, daihatsu alternator..

'a mini is for life, not just for christmas!'

Mmmmmmmm. I'm already shopping.

_________________
http://www.rylstoneclassic.com

Not if you own a race car. 1 ¾ is plenty for a road car.

Have a listen to a car with a ST/S exhaust. I think they sound too tinny and much prefer a deeper note from a mild steel one IMO.

_________________
"In two years time your car will be like a lady's clothes, out of date, my car will still be in fashion when I am dead" - Sir Alec speaking to Pininfarina

Stainless? makes no difference to performance...

1 3/4 vs 2" depends on your level of tune. I put my 1330 on GR's engine dyno and it made 113bhp on 1 3/4 and 120bhp on 2" so I went with 2". It is much louder though but I have installed a straight through hotdog betweent he engine and the muffler to turn it into a twin box sytem.

1293cc, unless it has had extensive porting work and makes 100ft/lb+ I'd stick with 1 3/4"

_________________
Lillee - 1969 Morris Mini K

that's ok, he's talking about sound



how many torques for each?

_________________
tim
68 Deluxe 1293, HIF44, megajolt/EDIS4, daihatsu alternator..

'a mini is for life, not just for christmas!'

It's already got an RC40 single box muffler I fitted, and the system is all 1-3/4".
As said I'd just toss the Perry 3-1 (Gafmo might buy it) and fit a medium bore LCB.

re the pipe size I put my 1412 stroker on GR's dyno and with 1-7/8 pipe, it made 114HP and 112 ft/lb torque (single HS6 SU).
We tried 2"pipe and it was less, tried 1-3/4 and it was less. (couple of HP for each)
It all depends on the state of tune. 1-3/4" pipe is plenty for your 1293, it's got a less hairy spec than lillee's 1330..

_________________
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.

I do like Perrys on 998/1098's

_________________
Stop Licking the Dog...I Don't Care Who Started It

cooper S never had stainless exhaust, or extractors as big/bad as maniflow (or even perry)

_________________
--Insert legal disclaimer here--

Cooper's car (which was my wife's) had a Lukey muffler on when we bought it. The PO had fitted it backwards to make more noise, it had a real bark. Unfortunately, it had no bite...
I reckon we gained 5HP when I tossed it and fitted the RC40.

_________________
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.

I'd say the perry's will be for sale shortly. Any recommendations on where to buy medium bore LCBs?

ER

_________________
http://www.rylstoneclassic.com