Sylvain2000

That would be nice to have a back to back dyno test with a SC !!!

Lex

Any updates on this??

s2000ellier

lol people never post the follow up cause it always loses power and they try to sell it

snitm

I'm working on getting all the needed parts together and plan to install it the 2nd week of April. The runner portion of my K-series ultra race and the CNC Speedshop F-to-K adapter are supposedly getting ported/polished by 4 piston this week (they've had it for 2 weeks already, they've been busy with other more profitable work I'm sure). I'll post up some pictures to this thread once I get it all installed.

I then have a tuning appointment at Evans Tuning the 3rd week of April. I'll definitely report back once I have the results.

snitm

But I do agree that the NA people who purchased the native F-series skunk2 ultra race are probably going to be disappointed. The 6.5" runners are too short for NA.

cars2kman

f20kills

I posted my results lol -10whp!! lol

snitm

Where'd you post? Also, which IM are you using?

I'm about half-way through upgrading my IM (to Kseries skunk2 ultra race ported by 4piston attached with CNC's FtoK adapter), hit a snag with not being able to get my existing coolant temp sensor out of my old IM's water neck.. hondabond sucks! But I should be able to finish the install tomorrow.

status pics for the hell of it:

before:


after 4piston CNC porting:




current state of my engine bay:

s2000ellier

whats the diameter with the porting now?

snitm

It ranges from 87mm at the very top edge of the bellmouth and then tapers from 65mm, to 55mm, then where it mates to the K-series side of the adapter plate it is 53mm. 4piston did a really nice job of eliminating the step (due to the bottom of the ultra race's runners being narrower) where it met the adapter plate. Pretty clear that skunk2 leaves quite a lot of material for porting.