Author Topic: Yamaha 1977 MX D 125  (Read 623 times)

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Offline Slakewell

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Yamaha 1977 MX D 125
« on: December 23, 2018, 07:35:16 PM »
Anyone got one of these for sales?
Current bikes. KTM MC 250 77 Husky CR 360 77, Husky 82 420 Auto Bitsa XR 200 project. Dont need a pickle just need to ride my motorcickle

Offline TT5 Matt

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Re: Yamaha 1977 MX D 125
« Reply #1 on: December 23, 2018, 09:08:22 PM »
ive got a mx125c but didn't know they imported the d model

Offline GMC

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Re: Yamaha 1977 MX D 125
« Reply #2 on: December 23, 2018, 09:41:22 PM »
Are you sure they existed?
I thought the C was the last of the MX 125 models?
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Offline Slakewell

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Re: Yamaha 1977 MX D 125
« Reply #3 on: December 24, 2018, 09:42:38 AM »
I used to ride with a guy who had one back in the day.
Current bikes. KTM MC 250 77 Husky CR 360 77, Husky 82 420 Auto Bitsa XR 200 project. Dont need a pickle just need to ride my motorcickle

Offline Slakewell

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Re: Yamaha 1977 MX D 125
« Reply #4 on: December 24, 2018, 09:54:48 AM »
Maybe you are correct about no D model? The C model seems to be the last? But it seems you can fit YZ D parts?
http://forum.ozvmx.com/index.php?topic=30255.0
Current bikes. KTM MC 250 77 Husky CR 360 77, Husky 82 420 Auto Bitsa XR 200 project. Dont need a pickle just need to ride my motorcickle

Offline TT5 Matt

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Re: Yamaha 1977 MX D 125
« Reply #5 on: December 25, 2018, 01:19:39 AM »
that link was an interesting read,think ill go with fitting an it175d/e/f motor with an yz close ratio box.it will  be good for hacking around the old half mile longtrack hereand easy to chuck around

Offline mboddy

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Re: Yamaha 1977 MX D 125
« Reply #6 on: December 25, 2018, 10:13:45 AM »
that link was an interesting read,think ill go with fitting an it175d/e/f motor with an yz close ratio box.it will  be good for hacking around the old half mile longtrack hereand easy to chuck around
The IT175D/E cylinder will be better for longtrack due to the extra power.
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Offline TT5 Matt

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Re: Yamaha 1977 MX D 125
« Reply #7 on: December 25, 2018, 10:41:41 PM »
yeah the D/E model were the hottest of that bunch and good mx type power then on the F they gave them more bottom end by dropping the top of the exhaust port 1.5mm,i know when I ported my TS185A and raised the exhaust port 1.5mm that it made a big difference on mid/top end power but stuff all bottom end for going behind sheep.

Offline Hoony

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Re: Yamaha 1977 MX D 125
« Reply #8 on: December 26, 2018, 11:02:50 AM »
i had a mate (Vic A Grade Mx Rider) that raced his dad's IT175 D in Sea Lake desert race in early 80's he said it had heaps of top end and suited this type of event, he chose that over his mX bike at the time due to the top end and fuel range.
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Offline TT5 Matt

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Re: Yamaha 1977 MX D 125
« Reply #9 on: December 27, 2018, 12:56:59 AM »
yeah the 175 would be a lot better for desert racing with the wide ratio box/50cc more and 4/5 litre bigger tank,just change to the longer yz suspension coz the stock IT suspension is abit short and you'd have a nice handling bike though the F model  was a lot better in that department