Is it worth it to have the SE manifold ported?
Do you get the "bang for the buck"?
The 55mm and 64mm SE Extreme manifolds are already ported. The 64mm manifold they sell with the 64mm throttle body is not ported. I bought the 64mm throttle body and SE extreme manifold separately for my 131" build. My results are in the dyno section. I didn't think further porting was necessary.
Depends on expectations of the build and if the manifold would be a choke point.
OldMike, I was thinking of having a Ward Perf port done on a 55.
Hrdtail, it's a 117 trike build so probably not a choke point. Saw a trike run with an RS468 and it went 125/105. Thinking maybe a cr480 would be similar with a bit more hp.
Not sure what a Ward Perf port would do.
Just put a factory cnc 55 on it with the stock tb at that build level. We have seen 130hp with that cam at 117"
Unless you're drag racing that trike and looking for hundredths of a second, I doubt a port mod would help much.
It's a M8 new set of rules. They demand air, even the torque builds.
Good to know. Port away!
Quote from: OldMike on January 30, 2022, 07:22:30 AMThe 55mm and 64mm SE Extreme manifolds are already ported. The 64mm manifold they sell with the 64mm throttle body is not ported. I bought the 64mm throttle body and SE extreme manifold separately for my 131" build. My results are in the dyno section. I didn't think further porting was necessary.
Says polished, don't think that's the same as ported?
Looks like We're claims about 4 or 5 tq/hp increase for a 64mm. Couldn't find much for a 55mm.
Quote from: NHBagger on February 01, 2022, 04:28:40 PMQuote from: OldMike on January 30, 2022, 07:22:30 AMThe 55mm and 64mm SE Extreme manifolds are already ported. The 64mm manifold they sell with the 64mm throttle body is not ported. I bought the 64mm throttle body and SE extreme manifold separately for my 131" build. My results are in the dyno section. I didn't think further porting was necessary.
Says polished, don't think that's the same as ported?
Looks like We're claims about 4 or 5 tq/hp increase for a 64mm. Couldn't find much for a 55mm.
Alpha Performance Engines did some 55mm manifold testing on Facebook.
(https://imagizer.imageshack.com/img922/5049/T2jZEN.jpg)
My tuner says they are worth it. He sees there is a difference.
I just bought an Extreme 64mm manifold for my 128". Anyone ever seen any flow testing on this intake, or know how it flows compared to SE 64mm unit? I considered Ward ported manifold, but do not have any bike downtime waiting on shipping, etc. Plus, I can sell the SE 64 manifold if I want to recoup a little money.