What is this inside my barrel?!

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CAD
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What is this inside my barrel?!

Post by CAD »

Just took my barrel into the machinist to get her cleaned up for a new top end and he spotted this.. Any idea what these little milled slots are just above the exhaust ports? I have not seen them on my other 2 strokes before... bike is a 91 CR500.

Cheers

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other
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Post by other »

Decompression scallops to ease starting . . . standard on all CR5's, and most other non power-valve big-bore 2 strokes. Is that your barrel up at 360 S&C ? if so, dood, that needs some attention from a hone !
o.t.h.e.r . . . . .Over The Hill Enduro Rider
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CAD
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Post by CAD »

other wrote:Decompression scallops to ease starting . . . standard on all CR5's, and most other non power-valve big-bore 2 strokes. Is that your barrel up at 360 S&C ? if so, dood, that needs some attention from a hone !
Sweet... thought so.

Yeh it was... picked it up today and wasn't super impressed with it :(
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mr500
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Post by mr500 »

Hi mate
You might want to get them to chamfer the edges of the ports and to relieve the exhaust bridge while they are working on it.
Refer to the Honda cr500 manual.
If they don't... El Seizo :shock:
Keep it real, Keep it steel.
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