MT500 parts do they fit MT350 Engine

For all that relates to both Armstrong MT 500 and Harley Davidson MT 350
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Robinh1957
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Joined: Fri Mar 13, 2020 7:35 pm
Location: Southam

MT500 parts do they fit MT350 Engine

Post by Robinh1957 » Sat Jun 27, 2020 11:03 am

Hi Folks
Since the loss of my MT350 (stolen) not been on here.

Now looking to rebuild one, have MT350 engine and wondering if MT500 barrel, head, clutch, kick start shaft will fit the 350 engine?

Any infor will help me to decide how to go about my rebuild.
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Wirralman
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Location: Wirral, Merseyside

Re: MT500 parts do they fit MT350 Engine

Post by Wirralman » Sat Jun 27, 2020 11:51 am

If you use the forum sections as a guide, you may find some relevant posts.

Try Tech/Mods n Fixes/Engine/ Top end swap
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Minter
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Location: Burlington , Shropshire

Re: MT500 parts do they fit MT350 Engine

Post by Minter » Sat Jun 27, 2020 12:39 pm

Yes they will all fit, getting the cylinder and head to work on such a short stroke is a different matter tho..
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SPORTAX Racing ROTAX
http://www.sportaxracing.co.uk
MTRC Shopkeeper
http://sportaxracing.co.uk/product-category/mtrc-shop/
Manuals & Technical Publications on above MTRC shop link

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hounddog
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Re: MT500 parts do they fit MT350 Engine

Post by hounddog » Sat Jun 27, 2020 1:02 pm

Or you could rebuild the 350 if its complete as a 405 with the Sportax kit . From my experience its a very nice
overall power increase and not far short of the 500 in performance
1 x
Ian
------------------------------------

Harley Davidson MT350e
Armstrong MT500e
Armstrong MT500 -current project

Robinh1957
Posts: 4
Joined: Fri Mar 13, 2020 7:35 pm
Location: Southam

Re: MT500 parts do they fit MT350 Engine

Post by Robinh1957 » Sat Jun 27, 2020 8:43 pm

Thanks for the replies and have looked at the tech stuff.

Next question
Will a 500 crank fit into a 350 case with the addaptions to make a 500cc engine to work?
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CJ-MT
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Joined: Tue Feb 07, 2017 6:55 pm
Location: Devon UK

Re: MT500 parts do they fit MT350 Engine

Post by CJ-MT » Sun Jun 28, 2020 6:42 pm

An MT 500 crank will fit 350 cases. The only issue is the engine breather being blanked off in the 350 case as the breathing is done through the crank/alternator case.

If you could machine/drill/tap a breather into the blank then no problem.
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Minter
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Re: MT500 parts do they fit MT350 Engine

Post by Minter » Mon Jun 29, 2020 9:46 am

hounddog wrote: ↑
Sat Jun 27, 2020 1:02 pm
Or you could rebuild the 350 if its complete as a 405 with the Sportax kit . From my experience its a very nice
overall power increase and not far short of the 500 in performance
405 kit produces more power than a standard 500 24 rear wheel horse power to 37 rear wheel horse power of the 405 kit!
1 x
SPORTAX Racing ROTAX
http://www.sportaxracing.co.uk
MTRC Shopkeeper
http://sportaxracing.co.uk/product-category/mtrc-shop/
Manuals & Technical Publications on above MTRC shop link

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hounddog
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Location: Portsmouth, Hampshire

Re: MT500 parts do they fit MT350 Engine

Post by hounddog » Mon Jun 29, 2020 12:57 pm

Minter wrote: ↑
Mon Jun 29, 2020 9:46 am
hounddog wrote: ↑
Sat Jun 27, 2020 1:02 pm
Or you could rebuild the 350 if its complete as a 405 with the Sportax kit . From my experience its a very nice
overall power increase and not far short of the 500 in performance
405 kit produces more power than a standard 500 24 rear wheel horse power to 37 rear wheel horse power of the 405 kit!
Thats good to hear , something new ive learned today ,
0 x
Ian
------------------------------------

Harley Davidson MT350e
Armstrong MT500e
Armstrong MT500 -current project

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