N65C vs N72E - 88 twin cam

I'm using the NOKK needle. This and the NOKV and N65C were compared on a dyno. The results were similar but the tester recommended the NOKK. His observation was it came on richer a bit sooner so that was his recommendation for a needle, the NOKK I use. Every were else they were close to the same.

My personal jetting for twin cam has been, NOKK, 48 pilot 200 main. I would suggest the same with the N65C. The idle mixture screw with the NOKK has been an average of 1 3/4 turns out. With the N65C with not being as rich as the NOKK as soon, I'd start at 2.

I also recommend buying the kit from cv-performance and just be done with it!! Other wise take the shim out, 48 pilot 200 main. Not my opinion, my experience using a similar needle.

Keep in mind it ain't gonna be 88 forever .... lol

99fatboy - what cams and exhaust are you running? Do you have the HD part # for the NOKK needle?

27241-95 Good luck finding one. I got the last 3 from the dealer that gets them from Vintage Cycle. Last year I got 4 from them and there were 200 left. This year Vintage Cycle had 42 left. I got my last 3 three weeks ago. Go to your local dealer and ask them to look it up from Vintage cycle.

Heads
CNC Ported by a man called Radar. One size larger Intake valve. The chamber around the intake was opened up a lot, and a little around the exhaust. My exhaust port was welded and ramped. My chamber its self was CNC'd and my heads were milled. To what, don't know. My intake was reshaped and looks like a D. I have no idea what my flow or my CC's are. The man was told what I had for a cam and pistons and make them work.

Crane H-286-2b advanced
Wisco 10:1 .040 head gasket and stock base size. Cometic MLS for both.

I'm assuming my wrench went with .040 instead of .030 because of the heads being milled. And for a street machine I think its a good idea. Carbon build up will take some of that .010 up in a few years.

A lot taller then the SE K&N breather, and I'm all open on the sides.
SE street module
Cycle Shack M pipes

CV 40 with NOKK needle.
Slide drilled to 1/8"
Spring from the SE 44 MM carb
45 pilot
200 main, up from the 195 after the head work.

HP and Torque, no idea. I got 55.94 mpg running 55-58, and 48.25 two up running 65-68. That was after the head work that was done this winter.

I trust my wrench to do the bolting, but I trust no one for my carb mod. And so have others.

It's strong. I have no problems keeping up and pulling away from bigger cubed engines.

99fatboy - I think I found an NOKK needle - will verify once it is here. Another tuning option!

As I mentioned the results were similar, SE for yourself here.

NRHS - High Performance for your Harley Twin Cam, Evolution, Sportster or Buell!

Well, I gotten NOKK needle in, no shims, 46 slow and 195 main. The main is either correct or too rich; at 70 in 4th gear, opened it up wide open, hit about 85, and dropped back to 3/4 throttle - no surge, just started to slow down. I did notice at moderate throttle, I get a rattle ( pinging? ) at around 3000 rpm based on speed and gear. Going on a long run tomorrow and will see what I get - may need the 48 slow ...? Seems close though - once the new exhaust is on I will do the dyno tune.

The speed is suppose to slow down, the 195 is not to rich. A slight ping is a sign of being advanced on the timing or a tad lean. Like I said, 48 pilot 200 main start at 1 3/4 turns out with the mixture screw. I would guess you would be around 3 with the 46, if it dont sneeze run it, if it's not to cold blooded go for it. The 195 is ok I jetted a stock TC with a 195 and 48 pilot. But, 48-200 just sayin give it a try.

Forgot to ask did it slow down right away or did it slow down at 3/4 throttle I didn't quit get that part. It should slow down the second you let off or it's to lean, 200 main, 48 pilot

How did the ride go? I'd sure like you to try the jetting I use for the TC'S I know you won't be disappointed

I have added the 48 slow; haven't got a 200 main (YET) - new exhaust comes in tomorrow; will put that on as well and let you know!

Kind of sad - busy week at work and haven't had a chance to ride LOL

What kind of gas mileage are you getting with that setup?

I have a EVO. My gas milage didn't change over what it was stock. 55 running 55 and 48 running 70. Of course this depends on hills wind and such.

Seems to me my friends "TC 88 carbs" I did got around 1.5 - 2 miles per gallon less then me. I don't see much of them anymore I went another direction.

When I was playing with my street rod to try and get better milage I had it so lean my milage went back down. As I found there is a sweet spot. 75 that came in the 750 holly got me bad milage, so did 65. 72 was just right. I lost some kick but 8 miles per gallon was better then 6!

The 195 will work, the 48 was the right direction. 200 you will notice for top speed and hitting red line better. Also the soft spot when passing should be gone with the 200.

I just read your opening post. Your milage at 70 getting 46 is where I seem to remember my friends TC 88's, you should not change that.

Stock TC jets are 45 and 190. Take the pilot to 48 with and the main to the 200. Depending on exhaust you can go 205, I'm talking drag pipes. With the NOKK needle being an advantage over the stock needle off idle, 2 turns should get it with the AF screw. My EVO is 1 3/4. I had mine out far enough I could push my inrichner in all the way in 40 degree weather in about 15 seconds. Problem was it was to rich when it got hot out and it would back fire when starting. And it wouldn't start right up and idle when hot it would die unless I gave it throttle. Once the op sets up his carb like I'm explaining he should only need to run his inrichner 25-30 seconds when it 40 out, lock his throttle lock down and let warm for 3 minutes, take off and never sneeze! When warm out and the engine is warmed up it will fire and idle with out giving it gas. Depending on how long he sets. This needle works and some one after market should make it!

How did you end up?