Porting engine cases

yamanube

yamanube

This Is The Way
Staff member
Location
Mandalor
I have a sneaking suspicion that the 62t case volume is a bit high for a stock cylinder and there isn't enough to be gained in porting the cylinder to handle the giant openings people are putting in the cases. I think the effort done to create better flow characteristics is beneficial but most probably take it too far.
When I port my own cases I typically am only focused on smoothing edges, rounding corners and creating clean paths of flow and try to not increase volume.
With that said, I am not an "engine builder", I don't epoxy my cases, and most of the engines I build myself are on 61x cases (because I am cheap, and I believe they work quite well for stock cylinder, stock stroke), but I am typically happy with how they run.
 
Jr.

Jr.

Standing Tall
Staff member
Site Supporter
Location
Hot-Lanta
yamanube said:
I have a sneaking suspicion that the 62t case volume is a bit high for a stock cylinder and there isn't enough to be gained in porting the cylinder to handle the giant openings people are putting in the cases. I think the effort done to create better flow characteristics is beneficial but most probably take it too far.
When I port my own cases I typically am only focused on smoothing edges, rounding corners and creating clean paths of flow and try to not increase volume.
With that said, I am not an "engine builder", I don't epoxy my cases, and most of the engines I build myself are on 61x cases (because I am cheap, and I believe they work quite well for stock cylinder, stock stroke), but I am typically happy with how they run.
Click to expand...

your exactly correct! I dont recommend case porting on my 735 package. Hurts bottom end performance. Internal surface shaping and texture goes a long way for positive gains.
P
 
Quinc

Quinc

Buy a Superjet
Location
California
yamanube said:
I have a sneaking suspicion that the 62t case volume is a bit high for a stock cylinder and there isn't enough to be gained in porting the cylinder to handle the giant openings people are putting in the cases. I think the effort done to create better flow characteristics is beneficial but most probably take it too far.
When I port my own cases I typically am only focused on smoothing edges, rounding corners and creating clean paths of flow and try to not increase volume.
With that said, I am not an "engine builder", I don't epoxy my cases, and most of the engines I build myself are on 61x cases (because I am cheap, and I believe they work quite well for stock cylinder, stock stroke), but I am typically happy with how they run.
Click to expand...

When you coming out with the case porting templates?! :D
 
R

rippedbx01

Location
Provo
I’m mostly done. I’ve probably stuffed about as much as I’ve taken out. The intakes fit with my VForce 2 reeds.

58b77fcb217d7b527a0fe5e7b80b5166.jpg

b1d60ad7f7d8d2a244c9b78d511ecc03.jpg



Sent from my iPhone using Tapatalk
 
You must log in or register to reply here.
Top Bottom