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Hey guys I'm clueless lol. What's a 317 bbk like acronym and all what does it replace where does it go and what's its purpose.
317
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5,072 Posts
It's a big bore kit, meaning it in increases the size of the bore (in your engine)
The bore is where the piston travels up and down.
A 300 is actually a 280cc (or thereabouts) the 317 BBK uses a different liner/sleeve within the bore to increase CC's.
Basically, the bigger the bore, the bigger the CC's, the bigger the CC's the bigger the power.
Is that any help? That's in the simplest terms I can think of lol.
The bore is where the piston travels up and down.
A 300 is actually a 280cc (or thereabouts) the 317 BBK uses a different liner/sleeve within the bore to increase CC's.
Basically, the bigger the bore, the bigger the CC's, the bigger the CC's the bigger the power.
Is that any help? That's in the simplest terms I can think of lol.
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7,087 Posts
350 Rancher specifically, not to be confused with the older 350's.
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64 Posts
Yes that did explain a lot thanks for sharing the info. So then what how does a jet kit work? Also what's the use in clutch kits? Thanks just wanna be able to learn as much as I can.
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Carb jet kits are sometimes needed when you fit an upgrade exhaust or a BBK. All jets are are little brass screws with a small hole through the middle. The bigger the hole the more fuel it lets through. So, the bigger your engine is the bigger your jet may need to be.
Clutches... there are change clutches which are used when you change gear and then there is the centrifugal clutch.
Again, the more power you have the more chance of your clutch slipping or failing. It's not necessary to fit upgraded clutches but it's always advised.
Clutches... there are change clutches which are used when you change gear and then there is the centrifugal clutch.
Again, the more power you have the more chance of your clutch slipping or failing. It's not necessary to fit upgraded clutches but it's always advised.
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With regards to as learning as much as possible, it takes time and nobody here will judge you for your lack of knowledge. Don't be afraid of asking what you may think is a silly question, no question is silly if you genuinely don't understand.
My advice would be to follow project threads and read through all the 'sticky threads' in the repair and maintenance section.
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I assume you mean .25mm over ? There is no .025" over as far as I know? That would be around .635mm over, Honda sells OEM pistons in 0.25, 0.50, 0.75 and 1mm typically. I'm not sure about aftermarket pistons though. If it's .25mm it's 319cc, if it's .025" it's 322cc
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12,712 Posts
I did forget the " .0 " , thanks for straightening that out for me , you are so right , .025 over is what I meant , so 322 is the answer ----so .050 would be about 327 , which is a cool number for an engine size , a 327 mouse , hope I don't see that day soon , I know you don't care much for the 317, Mac', I might be starting to agree with you , seems I may be in the process learning something I was told recently , that the 300 jug is bored so thin from cramming the 350 sleeve into it , that when the cold water hits the engine and causes rapid cooling that it shortens the life
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1,759 Posts
I think the formula is radius squared times the stroke. Radius is half the bore in case you forgot high school geometry. LOL
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7,087 Posts
50 thou over would be bang on 327cc
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4 Posts
Where can I buy one?
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4 Posts
How much power and speed does it add and what cam and valve springs u running and what jets?
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