Any thoughts on this port job?

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2legit2quit
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Joined: July 8th, 2016, 4:15 pm

Any thoughts on this port job?

Post by 2legit2quit »

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Bought a cr5 engine recently for an AF project. Took a look inside the intake and exhaust ports and this is what I found. I'm curious if this kind of port work is going to kill my bottom end. It's for a trail bike so I don't want an all top end engine.
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2legit2quit
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Joined: July 8th, 2016, 4:15 pm

Post by 2legit2quit »

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Oh and I know the piston is cracked. This engine is getting a full rebuild so I'm not worried about it.
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Roostius_Maximus
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Post by Roostius_Maximus »

Hard to tell really. The intake side has the ceilings of the aux ports tapered up which I don't like. The angle from the walls to the piston are done well. Exhaust side is sketchy
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Sandblaster
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Post by Sandblaster »

Send the top end to Roostie... You won't be disappointed...
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.
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