well in the early twin cam ( not sure about late ones but i can't see why not as it just fitted at the crank cam chessed side. well if you want to try one wait till your next cam change as you have to pull cams out to fit, not worth it on its own, but if your in there it's a good thing. would also help ring seal.
upgrading my camchest soon and was thinking of a reed valve as they fit on the pinion shaft behind the oil pump so as krash says it the time to be doing it however they are designed for a stock set up and apparently don't work with Feuling oil pumps. Putting a SE high flow pump in mine so I need to know if they are compatible first if anyone knows?
Jacko, when i first started useing the s&s reed valve, i read reports on the us forums of people experiencing problems with the reed valve & fueling oil pumps, but my 01 twin cam dyna with probably 90,000k to 100,000k up still on stock oil pump. ( second one ) the motor after 80,000k had the stock flywheels slip out of true. i am deaf due to an accident when i was young, so did not hear the noise, just noticed was slower in quarter mile but it still managed 112mph in speed traps. so took it to Cow at L A Cycles, he pulled heads barrels & he got a shock as could barely turn the flywheels, must have been hard for motor to spin over let alone do 11.9 112mph quarter mile. it had stuffed stock oil pump but lucky i had not gone far so the s&s gear drive was still fine. he had some like new flywheels from a motor he made 113 inch, these flywheels never even had oil burn marks on them like new. Cow checked & they where close to perfect, then he spot welded so pin will never slip out of true, he has build nitro HD motors for a while & the old ones had the pin welded so has done that a lot in past. well that motor is only 95 cubic inch twin cam , i'm not the best rider in the world, not in same class as daddyracer56 , but Cow did the stock cast HD heads had custom order JE pistons made machined chamber to suit pistons welded heads up made larger valve seats fitted them ( intake seats ) put 2 inch S&S intake valves into stock heads used Woods valve springs , i had s&s 625 cams in but put the Andrews 55G back in i ran a s&s D carb i've had since the 80's, then went to an CV51 a m8 in states gave me made the s&s manifold to fit the CV51 as that manifold flowed better. Cow & Charlie made the pipes ( tappered end Duels like Cycle Shack. Cow also fitted de compression valves to stock heads as motor has lot of comp run crane hi 4 tc ingnition. Cow had this bike on his dyno for total of something like 180 run's from when he first got his dyno, so it's been developed but still only 95 cubic inch and i road the bike to willowband to race screamin eagle Harleys a number of times when MW sponsored that then road it home to Sydney after the race. the best time i have ran on the bike was at Sydney Drags 11.23 with trap speed of 121.9 mph 60ft was only 1.80 with a better rider doing 1.6 60 ft its a genuine high 10 second twin cam 95 inch street bike. i sold her to Cow now he rides it. i ride a old tube frame Buell Cyclone carb model so no class at all.
also the 95 made 120hp 110Ft Pound Tq with one tune it had so for an all Australian Build in a motor that looked stock & just stock foot shifting backing off to shift & runing 40psi tyre pressure so i could ride it home it's not a bad effort for a bloke in my shape & age.
Cheers
ps i liked the andrews 55G cams myself, but Cow told me he was putting the S&S 625 cams in as i gave them to him with the bike & he wants the to help easy starting, you needed to push de comp valves in also with the hi comp & 55G cams in i had to have stock starter rebuilt three times but still runs stock starter. all a cam change does is move where power & torque comes in, don't expect a huge gain with cam change from same motor as won't happen its a combination.
Krash this is my slip have a look and see what you think trapp speeds and other times don,t mean much to me
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Ando the time you did for the speed is spot on, your 60ft time not bad but you could improve on that , best 60 ft i have ever done myself was 1.65 . but daddyracer56 does 1.50 60ft's thats the best i've seen no wheelie bar & stock HD frame stock swingarm. street tyres.
your bike is a 6 speed i've always raced with 4 speed or five speeds, with a 4 speed i hold them in 3 rd gear through speed trap with 5 speed i hold them in 4th gear through speed trap what gear where you in through speed trap & do you keep in wide open over the line & through speed traps?
daddyracer56 has raced 4 speed 5speed & 6speed gear box HD's. everytime you shift takes time so if you can hold it in a lower gear i had my twin cam 95 rev limit set @ 7,200 rev & would be bouncing off rev limiter in speed traps fouth gear. but how much do you weigh & how much does the bike weigh? what pressure do you run in your tyres? my bike was carb so i had to have a full tank of fuel, but the EFI bikes can run with tank low on fuel gets weight down.also if you ever dyno go for the map or tune that you make the most HP & TQ in three seconds or less wide open throtle , it shows up on time slip as i tried all different tunes went to track every week.
That pretty long list. I knew you had done some work to that engine. That one hell of a sporty engine. Can't wait until Lushy has done his magic.
Thats all true i know just at the track 5 secons x 4 gear shifts it's all split second at the track even your reaction time is important ( if your at a street meet not so , i'm talking elimination )
Also thought should mention, not 2,000 to 6,000 we would start run at 3,000 as i have always kept rev's on harleys 3,000 & up.
on the line at track i used to hold revs high, latter i was just going off idle . but at my best i would hold revs @ 4,000 or 5,000 on line control it with clutch. but everyone has there own style, we all did it different.
but it reved quick as i had shift light set at 5,800 to 6,000 then in fourth it would hit rev limiter @ 7,200. but at my best i could shift her real quick, still a 5,800 shift light don't mean thats when you shifted could have gone to 6,000?
Harleys have a Good Tq curve so can short shift not make much diff to time slip but keep it wide open all the way
Good Stuff T1 & dynoharley, that's the way to find out, the trouble is learning to be consistent, took me years, i was a 12 second rider with an 11 second bike, but i would not beleave that. then one day i ran 11's never stopped runing 11's, & the fact was the motor never changed it was me that improved.
the trick is don't try too hard, get a shift light so you sift at same rev , & can change shift rev see if you improve or go slower.
the most iportant things to quick time is learning to get that 60 foot time down, then learning to shift lightnig quick. you will also see just how much a missed shift kill's your time.
good luck with it.
Be interesting to see how she tunes up KiwiRob.
Sound's good Kiwi Rob, just thought I'd mention, I don't like the Energy One clutch plates, but see how they go .
Hi Rob,
You running those S&S easystart cams with the auto decompressors. I've ordered easy starts now I'm worried they wont work with decompressors.
Will I get electrical fault if I un plug decompressors.
Hi Hilly I have S/E tuner.
I wonder if they are already turned off. Push button starter winds up stops then turns motor over.
