|
![]() |
#51 |
Member
Join Date: Oct 2003
Posts: 496
Likes: 3,219
Liked 619 Times in 152 Posts
|
![]() |
![]() |
![]() |
Liked |
![]() |
#52 |
Junior Member
Join Date: Jul 2022
Posts: 71
Likes: 19
Liked 57 Times in 25 Posts
|
![]()
Just looked up the max intake port volume allowed for the 68 302/230, what I saw was 130cc, is that right?
Looked up the 64 289/210 and saw 155cc? What did I miss? Thanks |
![]() |
![]() |
![]() |
#53 |
Senior Member
Join Date: Mar 2002
Location: NS CANADA
Posts: 736
Likes: 687
Liked 187 Times in 68 Posts
|
![]()
PM sent
|
![]() |
![]() |
![]() |
#54 |
Senior Member
Join Date: Apr 2020
Location: Phila, PA
Posts: 619
Likes: 0
Liked 556 Times in 293 Posts
|
![]() Unless you run at a DA of zero or negative then you are racing with (less) uncorrected HP. I do have those 1 line calculators that produce those high HP numbers, they make people feel good about the engine they built. ![]() Stan |
![]() |
![]() |
Liked |
![]() |
#55 |
Senior Member
Join Date: Apr 2020
Location: Phila, PA
Posts: 619
Likes: 0
Liked 556 Times in 293 Posts
|
![]()
Let me just add, Larry Meaux's ETA is a great program for analyzing time slips if anyone is interested in this kind of software.
Stan |
![]() |
![]() |
Liked |
![]() |
#56 |
Member
Join Date: Aug 2007
Location: Monroe Twp NJ
Posts: 454
Likes: 932
Liked 928 Times in 241 Posts
|
![]()
Nothing, that's what it is. Many years ago, people submitted heads to be poured and that's what they came up with. My cast Iron heads are ported to the 130/49cc spec.
__________________
Duane Hoven 1342 SS/GT |
![]() |
![]() |
![]() |
#57 |
Junior Member
Join Date: Jul 2022
Posts: 71
Likes: 19
Liked 57 Times in 25 Posts
|
![]() |
![]() |
![]() |
![]() |
|
|