Wiseco Piston Benefits | Benefits of Forged Pistons | Forged vs Cast Pistons | Partzilla.com

What are the benefits of Wiseco forged pistons?
In this video from Partzilla.com, John takes you through the decisions you will need to make when picking forged pistons for your motorcycle, ATV, or UTV. We’ll compare Wiseco pistons with OEM pistons on the Honda CRF450R and a Honda TRX420.
On the CRF450R, John will explain how this unit’s nikasil cylinder prohibits choices for piston size, but not compression. Wiseco offers a range of compression options depending on your performance demands, all the way up to a 14.5:1 on the Wiseco Racer Elite series.
On the TRX420, you'll see how the depth and of the Wiseco piston gives you performance advantages over the OEM piston.
What are the benefits of forged vs. cast pistons? The two biggest are strength and weight, and those two performance edges are intertwined. John will explain the difference in the manufacturing processes for forged vs. cast pistons, which leads to a stronger component produced from the forged method. A stronger piston means that more material can be shaved from the piston, which makes it lighter.
Wiseco piston coating offers another edge. A forged piston is more dense due to the manufacturing process, and that means it takes longer to heat up in the cylinder. Wiseco piston coatings help to keep the piston quiet in the cylinder until the piston expands due to heating, which creates a tight seal inside the cylinder.
So how do you choose a Wiseco piston?
If your engine has a nikasil cylinder wall, part of the choice is made for you: they’ll come in only one size. You can then choose the desired compression, but keep in mind increased compression may require a change in the fuel/air map and may also require a different fuel.
If you have a bored cylinder, your options will revolve around the bore. Talk to your machinist about the desired bore on your cylinder. Wiseco factors in the tolerances when offering their pistons, so your machinist simply has to bore to that given size since Wiseco has considered the variances.
A Wiseco piston from Partzilla.com includes the piston, rings, circlips, and wrist pin, but you can also choose a Wiseco forged piston kit that includes the piston, rings, circlips, and wrist pin as well as the gaskets you'll need to do a top end job.
See Wiseco motorcycle pistons, Wiseco ATV pistons, and Wiseco UTV pistons along with other Wiseco engine rebuild kits here: www.partzilla....
Learn more about Wiseco pistons at Partzilla.com here: • Why Buy Wiseco Pistons...
Read about Wiseco pistons: www.partzilla....
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[@ezio8591]

Mr. Partzilla himself, good to see you still making videos, they've helped me out a lot on my atv. Keep ' em coming and have a great day

[@fishgeralding9224]

Most of the cast pistons today are hypertuectic and fine for street turbo and these higher compression direct injection engines. Forged are more for racing applications. By nature, forged pistons have more tolerance when cold as they expand more than cast when they warm. Coating or not, piston slap will occur every cold start. This will tend to oval the cylinders, shorten the lifespan, make more and larger boring on the rebuild. The choice is yours to make. 😁

[@listonthomas796]

Gd am looking alittle advice have a h22a,5100139 that am upgrading should I go forged pistons or should I just go high compression pistons and witch pistons is best for me,will appreciate your experience with ur advice

[@KowboyUSA]

Don't mean to nitpick here, but the image shown of "particle board" is actually oriented strand board (OSB). Particle board is formed from wood dust and very small chips. OSB's oriented structure usually makes it stronger than particle board. Perhaps it was the script writer's original intention to compare the strengthening of wood by purposefully changing it's internal structure to strengthening metal by doing the same via forging.

[@dfusiondiamond]

Just bought a wiesco rebuild kit for my 2001 honda 250ex. I bought it in 01 and havent touched the motor in 21 years. hoping that this kit will bring the power back to my motor.

[@doobyboy21]

I'm doing the ultimate test with Wiseco pistons in my snowmobile this year ! People keep telling me they won't last in your Polaris RMK... Wiseco's can ruin cylinders because they tend to expand slower in your cylinder than cast pistons, which can cause a cold seize... The trick is to let your machine warmed up and proper lubrication... I'll see how many miles I can pull out of these bad boys !

[@efirizaki5656]

I dont know aboute wiseco but you can put a shity piston as long the engineer do his jod right,now if you putt wiseco or another high quality piston....

[@BjornFSE]

Very Nice & Informative. Din't Mentiond Piston Slap on Cold (w/forged) but you did mention that it takes longer to heat up.

[@jasonpearson4983]

Pretty sure him explaining the armor Glide was enough for mechanically inclined person to understand. Yes without the armor Glide there will be some slapping prior to it reaching operating temperature

[@andywu8558]

Amsoil should offer instant lubrication.

[@tscooter8103]

@@andywu8558 All should understand the "Slap" is a ancient issue solved with the modern forgings, many turned shapes and Heat treat process , most if not all are set up with tighter Piston to wall clearance than Cast pistons. and the Hot Rod product has the underside Shot Peened for Stress relief.

[@tscooter8103]

That ended in the late seventies, Modern Forging are set as tight or tighter Piston To Cylinder Clearance than OE Castings. Ol LT1 chevy with those boat Anchor TRW forgings sounded like a person was in the motor with a Hammer

[@ghulamfarooq3587]

Hi john, you doing really good job🙂🙂🙂

[@AlabamaPoe]

I got this in my suzuki ltr450 quad..

[@bratwurstmaxxehaxxe5315]

the comparison between stock cast piston to the wiseco showed me that the stock one has a better antislap security by the longer guide. wisecos choice is to shorten the guides and add a layer of anti-friction. this is ok but why this anti-friction layer is not applied to the strongest claimed part with de biggest leverage the nose of the guide..?

[@tscooter8103]

Not sure what your referring to as "Guides" the Piston Skirts are the same length as stock OE. Modern Four Stroke MXr's have Short Strokes with Long Connecting Rods to straighten out Rod Angles Keeping the Piston Square in the bore for superior ring seal. The piston is merely a ring holder. Loose clearance and the piston will flex across the Pin Bore and crack and split the piston The Coating is Not even factored in the Clearance spec.

[@fidelcatsro6948]

wiseco wise choice!!

[@HandMadeWrath]

Define "a little bit more" like at how much hp will I need forged pistons

[@SmalltimR]

Looks like there's a crack in the casting on the left pin reinforcement beam @ 2:34 - doesn't look good for Wiseco

[@mrnurse4479]

Hello how much boost can they handle? If running with h profile rods, Aluminium intercooler and planning to overboost the turbo? Whats the limit? Compression 8:5:1

[@rayban5737]

53psi before I blew a hole through my piston

[@edwardabrahamiii3742]

With shorter piston then OEM you get more piston rocking tho

[@tscooter8103]

Racers Choice GP pistons have Longer Piston Skirts than OE to better stabilize the Piston Keeping the Ring more Square up and down the bore Providing Superior Ring Seal.

[@tscooter8103]

Skirt Length is the same as OE, GP racers choice 2t's have Longer skirts than OE

[@listonthomas796]

Witch wiseco piston is best for my h22a 5100139 that I want to upgrade

[@whiterabbitciggy]

and Hypereutectic ??? best of both worlds

[@moto_tech_braap_itout9852]

Whats your suggestion for a 2007 trx250ex with hmf full exhaust ? Also what size should i put in to get the popping noice to stop when i let off gas ?

[@Shamoolovers6691]

hi i need 62mm piston 14mm pin size forged piston and clyender block

[@m_zbrv3967]

Where are you from

[@Shamoolovers6691]

@@m_zbrv3967 i m from pakistan lahore

[@m_zbrv3967]

@@Shamoolovers6691 hmmm not sure about your market. If you live in Malaysia, item like that is very easy to find

[@Shamoolovers6691]

@@m_zbrv3967 Lahore pakistan

[@Shamoolovers6691]

@@m_zbrv3967 These itemes are not availabel in are markets

[@DisruptiveUnicorn98k]

That coating is for cold start to reduce piston slap!

[@matthewjackson64]

Thys Greeff that’s what he said, pay attention boomer.

[@DisruptiveUnicorn98k]

@@matthewjackson64 I heard what he said but if I didn't know better I would not have noticed the crucial information that is not mentioned intentionally otherwise I would have destroyed an daily driver with pistons that really doesn't benifits my engine

[@matthewjackson64]

Thys Greeff I’m just being a troll. I’m sorry, I just had a cup of coffee. ☕️ I think you’re right, cast-aluminum is better than forged for a reliable average horsepower daily driver. ✌🏽 ☮️ and ❤️

[@DisruptiveUnicorn98k]

@@matthewjackson64 I don't mind it's cool

[@tscooter8103]

Nope. Not even factored in the clearance