MAC/Yoshimura exhaust systems.

otakar
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29 Apr 2010 14:09 - 29 Apr 2010 14:10 #364232 by otakar

Replied by otakar on topic MAC/Yoshimura exhaust systems.

Yes you can put the Megaphone tailpipe on it. It is narrower in the transition area and a bit bigger in the flair end.

74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000

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otakar
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29 Apr 2010 14:12 #364234 by otakar

Replied by otakar on topic MAC/Yoshimura exhaust systems.

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mark1122
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Keep twisting it

29 Apr 2010 14:12 #364237 by mark1122

Replied by mark1122 on topic MAC/Yoshimura exhaust systems.

mark1122 wrote:

This 1 appears to be dif Otto. it has a straight pipe attached to the meg, without a bend..

76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)

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otakar
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29 Apr 2010 14:19 #364241 by otakar

Replied by otakar on topic MAC/Yoshimura exhaust systems.

They may have changed the construction over the years to make it more universal, but the design geometry and looks are the same as the modern MAC Megaphone pipe.

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Mcdroid
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Gone Kwackers

29 Apr 2010 14:20 #364243 by Mcdroid

Replied by Mcdroid on topic MAC/Yoshimura exhaust systems.

I'm liking (not licking) my old MAC more and more

Michael
Victoria, Texas

1982 GPz750
1977 KZ1000A
1978 KZ1000A
1982 GPz1100
1975 Z2A

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T_Dub
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29 Apr 2010 14:29 #364250 by T_Dub

Replied by T_Dub on topic MAC/Yoshimura exhaust systems.

Here's a pic of my $12 Yosh. What is it? If you can't tell from this crappy pic, I can get a better one.

1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler

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79MKII
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Love Them Kaws!

29 Apr 2010 14:30 #364251 by 79MKII

Replied by 79MKII on topic MAC/Yoshimura exhaust systems.

I've always heard that the Mac's are an inferior quality pipe - what do you think? They sure look great and the one that I owned held up perfectly for many years.

Here's my Yoshi pipe again that Otakar ID's as a type I drag style header (in another post). Thanks for that info! I always thought it looked more drag than road race but didn't realize Yoshi made one. Here's a picture of Greg Z's bike with this pipe mounted:

The Kaw List:
Current: 79 KZ1000 A3 MKII, 78 KZ1000 A2, 78 KZ1000 Z1-R, 78 KZ650 SR, 80 KE175
Former: 03 KLX400SR, 99 ZRX1000, 82 KZ750 LTD, 80 KZ1000 A4 MKII, 80 KZ1000 LTD, 78 KZ1000 A2, 74 H-2 750 Triple, 78 KL250

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otakar
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29 Apr 2010 14:34 #364255 by otakar

Replied by otakar on topic MAC/Yoshimura exhaust systems.

T_Dub wrote:

Here's a pic of my $12 Yosh. What is it? If you can't tell from this crappy pic, I can get a better one.

That is a series I pipe.

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T_Dub
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29 Apr 2010 14:38 #364257 by T_Dub

Replied by T_Dub on topic MAC/Yoshimura exhaust systems.

So the Series II has a non-constant diameter muffler section?

1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler

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otakar
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29 Apr 2010 14:40 #364258 by otakar

Replied by otakar on topic MAC/Yoshimura exhaust systems.

Yes it looks a lot like the MAC Cannister pipe but it has a much larger collector which makes the transition to the muffler not as unsightly.

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T_Dub
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29 Apr 2010 14:44 #364261 by T_Dub

Replied by T_Dub on topic MAC/Yoshimura exhaust systems.

Ok, now I've got it all down. I'm looking forward to seeing this new MAC competition pipe on sale. And I'll be saving my pennies for a Yosh titanium hand bent system. How much are they anyways? Hopefully in a year I'll be working as and engineer, should be able to afford something big.

1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler

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otakar
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29 Apr 2010 14:47 #364262 by otakar

Replied by otakar on topic MAC/Yoshimura exhaust systems.

I did forget one point. The Yoshimura series II sweeps up a lot. It was intended for road-racing. If I am not mistaking, it required the removal of the right rear footpeg.

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MAC/Yoshimura exhaust systems.

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