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Old October 18th, 2019, 06:56 PM   #1
NaturalFlavored
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Piston charts??

Is there somewhere where I can find different size Pistons with their measurements??
I know it's a long shot but I'm building a custom engine and I'm sort of new to the custom scene, I have done mods in the past but it's from things already made for the engine.
I'm just looking for a certain size piston.

Stock piston size I'm working with

Piston Diameter: 75mm
Piston Height: 46mm
Compression Height: 22.5mm
Wrist Pin Diameter: 17mm
Wrist Pin Length: 57mm

Or better yet can someone help me with how to search for a specific piston size?

Last futzed with by NaturalFlavored; October 19th, 2019 at 07:43 AM.
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Old October 19th, 2019, 12:12 AM   #2
59096
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Quote:
Originally Posted by NaturalFlavored View Post
Is there somewhere where I can find different size Pistons with their measurements??
I know it's a long shot but I'm building a custom engine and I'm sort of new to the custom scene, I have done mods in the past but it's from things already made for the engine.
I'm just looking for a certain size piston.

Stock piston size I'm working with

Piston Diameter: 72mm
Piston Height: 46mm
Compression Height: 22.5mm
Wrist Pin Diameter: 17mm
Wrist Pin Length: 57mm

Or better yet can someone help me with how to search for a specific piston size?
You also need to know the measurement from the centre of the wrist pin to the top of the piston
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Old October 19th, 2019, 12:39 AM   #3
DannoXYZ
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Quote:
Originally Posted by 59096 View Post
You also need to know the measurement from the centre of the wrist pin to the top of the piston
That's compression height = 22,5mm


As for piston sources, I usually peruse Wisco and JE piston catalogues:
http://www.wiseco.com/Powersports/Pistons.aspx
https://www.jepistons.com/Catalogs/P...rts/Index.aspx

Usually you can find something that's matching. If not, you can always fill out form and get pistons made to your exact specs. I usually go to Wossner or Arias for that. Looks like Honda Helix CN250 pistons match your specs.

http://bradsscooters.com/partsstore/...-piston-kit-2/
https://www.partsforscooters.com/180...iston-Kit-72mm
https://www.amazon.com/Piston-Honda-.../dp/B06XQGHFQ7
https://www.ebay.com/itm/HONDA-HELIX...T/372644721467
https://www.ebay.com/c/14031241008
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Old October 19th, 2019, 07:44 AM   #4
NaturalFlavored
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Thanks for the info, yeah it's the motor I'm working with. I will browse through those websites and see what I come up with.
Thanks for the help.
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Old October 19th, 2019, 11:11 AM   #5
DannoXYZ
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This is very popular engine for buggies and karts since Helix was produced for over 20-years. Typical big-bore kit:

http://www.scootertronics.com/cn250-big-bore-75mm.html

Web Cam has performance grind for it.
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Old October 19th, 2019, 05:44 PM   #6
NaturalFlavored
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It is but nobody offers the BBK it's all out of stock now. Which is why I have to make my own.
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