|
![]() |
#51 |
Senior Member
Join Date: Oct 2003
Posts: 567
Likes: 4,185
Liked 776 Times in 199 Posts
|
![]() |
![]() |
![]() |
Liked |
![]() |
#52 |
Member
Join Date: Jul 2022
Posts: 102
Likes: 31
Liked 73 Times in 37 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: 892
Likes: 1,646
Liked 393 Times in 153 Posts
|
![]()
PM sent
|
![]() |
![]() |
![]() |
#54 |
Senior Member
Join Date: Apr 2020
Location: Phila, PA
Posts: 794
Likes: 0
Liked 734 Times in 385 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: 794
Likes: 0
Liked 734 Times in 385 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 |
Senior Member
Join Date: Aug 2007
Location: Monroe Twp NJ
Posts: 507
Likes: 1,041
Liked 1,001 Times in 276 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 |
Member
Join Date: Jul 2022
Posts: 102
Likes: 31
Liked 73 Times in 37 Posts
|
![]() |
![]() |
![]() |
![]() |
|
|