Now making 6volt c90 exhaust.

mteck-racing
Posts: 54
Joined: Mon Dec 20, 2010 10:24 pm
Rides:: 12v roundheadlight 201cc 4valve
Location: lincolnshire

Now making 6volt c90 exhaust.

Post by mteck-racing » Sun Mar 11, 2012 4:32 pm

I can now do the same yoshi kit for the 6 volt c90.
same price £85 all in.

Image

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mark1982
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Rides:: 1977 c90Z2 , cb 100. yam t80. yam rs100. cub wannabe red 1976 C90 Z2
Location: kent

Re: Now making 6volt c90 exhaust.

Post by mark1982 » Mon Mar 12, 2012 5:38 pm

That looks really nice :D

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garth
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Rides:: C50LAC / C90 plop / C90 / Versys / WK450 RX
Location: Southampton

Re: Now making 6volt c90 exhaust.

Post by garth » Mon Mar 12, 2012 5:53 pm

I can't say I care too much for the looks, but I am interested in this 201cc 4 Valve of yours. Do tell.

mteck-racing
Posts: 54
Joined: Mon Dec 20, 2010 10:24 pm
Rides:: 12v roundheadlight 201cc 4valve
Location: lincolnshire

Re: Now making 6volt c90 exhaust.

Post by mteck-racing » Mon Mar 12, 2012 9:21 pm

Its a beast. yx160 with the 4 valve head then i fitted a bigger liner and a 67mm yamaha R6 piston. making it 201cc.
The aim was to make a 100mph c90 but still a way off it yet. working progress. :)
working on a 68mm piston at the mo.
no substitute for CC's

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aliengravy
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Re: Now making 6volt c90 exhaust.

Post by aliengravy » Tue Mar 13, 2012 12:11 pm

Project thread?? ;)

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mark1982
Posts: 2218
Joined: Tue Jun 07, 2011 7:39 pm
Rides:: 1977 c90Z2 , cb 100. yam t80. yam rs100. cub wannabe red 1976 C90 Z2
Location: kent

Re: Now making 6volt c90 exhaust.

Post by mark1982 » Sat Mar 31, 2012 9:38 am

That was nice surprise coming home from working away for couple days the Exhulst has come thru thanks shall be fitting it today Befor i start stripping bike are they that loud they need the plug in back of Exhulst ??

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mark1982
Posts: 2218
Joined: Tue Jun 07, 2011 7:39 pm
Rides:: 1977 c90Z2 , cb 100. yam t80. yam rs100. cub wannabe red 1976 C90 Z2
Location: kent

Re: Now making 6volt c90 exhaust.

Post by mark1982 » Sat Mar 31, 2012 10:08 am

Just another thought will i need to up jet it with this Exhulst on and play with carb settings any1 know what an ideal jet size carb setting would be thanks

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mark1982
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Joined: Tue Jun 07, 2011 7:39 pm
Rides:: 1977 c90Z2 , cb 100. yam t80. yam rs100. cub wannabe red 1976 C90 Z2
Location: kent

Re: Now making 6volt c90 exhaust.

Post by mark1982 » Sat Mar 31, 2012 7:54 pm

Fitted Exhulst but stand won't go up fully help please

graeme19
Posts: 33
Joined: Wed Jul 03, 2013 12:47 pm
Rides:: ktm duke 2, yamaha thundercat and 73 honda c90

Re: Now making 6volt c90 exhaust.

Post by graeme19 » Thu Apr 17, 2014 12:13 pm

Mr Mteck - I have a 6v 1973 C90 and need a new exhaust with better flow.

What styles etc.. do you do??

Graeme

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fatboytours
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Rides:: C90T 12v C70c 12v Triumph ST 955, BMW 1200 GSA, Blood bike BMW R1200RT
Location: Royal Wootton Bassett, Wiltshire

Re: Now making 6volt c90 exhaust.

Post by fatboytours » Thu Jan 01, 2015 6:18 pm

Hello mate, how you doing
I already have one of your Yoshi mufflers and ss pipe fitted to my 12v C90, but I have now acquired a 6v C70 that could do with a new system, are you still making them. Would be nice to have a system that would fit a Lifan 110 if I slipped that motor in later. Would either of these systems fit the Lifan 110??

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