HUSQVARNA 353's 45mm Cylinder studyish

[Hulpio]

Three cylinders in comparison.
1. OEM
2. The Duke's 350, 353, 346 cylinder kit
3. Winzor H353-CA 346XP, 353 etc cyl kit
Not huge differences in timing and assembly length of each cylinder is same.
TDC in drawings is cylinder head.
Transfers are really tiny in Winzor and pointing too much away from carb side.
Duke's looks better than oem.

 

[cuinrearview]

"Not huge" differences are huge differences. Just sayin'

 

[Hulpio]

Here some data. I will not show Duke's. Have to respect one's intellectual property. But is is tiny bit "hotter".
Winzor' s transfers are small and point way too much to muffler side.

 

[Hulpio]

Happy to see my review alive at Duke's site!

 

[cuinrearview]

Happy to see my review alive at Duke's site!

Never heard of her

 

[farminkarman]

Here some data. I will not show Duke's. Have to respect one's intellectual property. But is is tiny bit "hotter".
Winzor' s transfers are small and point way too much to muffler side.

Why are you measuring from TDC to the intake roof? You should be more concerned about the floor.

 

[Hulpio]

Why are you measuring from TDC to the intake roof? You should be more concerned about the floor.

Yeah since measuring was for comparison purposes only.

 

[farminkarman]

Yeah since measuring was for comparison purposes only.

Comparing intake roof heights is kinda useless actually.

 

[Hulpio]

Been busy laying down on my sofa so not much degree wheels printed etc.

 

[Hulpio]

What this comparison tells is that Winzor intake is 1.5mm closer to the top of the cylinder and is about the same size and shape as OEM.

 

[huskihl]

What this comparison tells is that Winzor intake is 1.5mm closer to the top of the cylinder and is about the same size and shape as OEM.

He’s implying that the roof is somewhat irrelevant. The floor is where intake timing is measured as that is where the port opens first

 

[Hulpio]

And it is obvious that this Winzor cylider has later intake opening than OEM and so most likely less stuff ends up to the crankcase and eventually to the combustion.