Topic: 2015 cvo valve spring (Read 7918 times)

myanoch · « **on:** November 08, 2015, 01:48:48 PM »

part #18272-00 anyone know max lift of these springs
looking to install se585 cams

hawgzilla · « **Reply #1 on:** November 08, 2015, 02:07:04 PM »

If those are the stock CVO springs, the SE 585's are not a problem.

myanoch · « **Reply #2 on:** November 08, 2015, 02:14:57 PM »

they are stock springs dual with no damper
thanks

johnsachs · « **Reply #3 on:** November 08, 2015, 07:33:59 PM »

If using those springs, you better check coil bind at your spring installed height.
John

GMR-PERFORMANCE · « **Reply #4 on:** November 11, 2015, 02:48:03 PM »

You may want to look at a set of AVV 600 lift springs instead. As you will be ok with those using that cam if you do not have the proper tooling to check seat pressure and coil bind etc.

Being that you are dealing with stock heads many times what it should be is not what it is.

HILLSIDECYCLE.COM · « **Reply #5 on:** November 11, 2015, 04:15:32 PM »

We stock/use the .650" AV&V's here, to give the client the versatility of being able to move around with different cams, if so desired.

Scott

Ridgerunr · « **Reply #6 on:** November 12, 2015, 07:33:43 AM »

Quote from: HILLSIDECYCLE.COM on November 11, 2015, 04:15:32 PM

We stock/use the .650" AV&V's here, to give the client the versatility of being able to move around with different cams, if so desired.
Scott

Anyone know the seat pressure of these? Thanks.

GMR-PERFORMANCE · « **Reply #7 on:** November 12, 2015, 07:56:18 AM »

Below are stated specs , the issue is that not all are going to be at the right installed height. Some of these are short.. so your installed is less that spec and you have more seat psi and less to coil bind. With that said check your set up .. Hope this helps

From AV&V
600 spring

175 @ 1.835
165 @ 1.860
155 @ 1.900

650 spring

178 @ 1.860
172 @ 1.880
166 @ 1.900

HD Street Performance · « **Reply #8 on:** November 12, 2015, 10:15:54 AM »

Also take note that the seat pressures are actually higher than the stock springs which are about 155#
The stock spring has a higher rate though so open pressure exceeds the beehive

HILLSIDECYCLE.COM · « **Reply #9 on:** November 14, 2015, 11:13:20 AM »

And a double-wound, and then with a flat-wound harmonic dampner, has a surge to them, where a "progessive" beehive, is just that, a nice progressive rate.
Scott

Dietea · « **Reply #10 on:** November 15, 2015, 05:11:32 AM »

I have similar problem with SE 585 cams. They recommended replace valve springs when installing these valves.

Do anybody knows what is valve stem diameter @ 2013 CVO 110cid engine?
Spring supplier like AV&V and Kibblewhite has two stem diameters available: 5/16" and 7mm. I cannot found clear answer on the web pages what springs should be ordered to CVO 110cid engine.

Any recommendations to SE 585 valve springs?
Valve lift is: .584"

hawgzilla · « **Reply #11 on:** November 15, 2015, 09:50:44 AM »

Harleys' tech support tells their dealers that the CVO 110 springs are fine with the SE 585 cams. Have the engine builders here found that not to be true on any heads you have inspected? It sounds like they must be close from some of the responses.

wfolarry · « **Reply #12 on:** November 15, 2015, 10:14:05 AM »

Quote from: Dietea on November 15, 2015, 05:11:32 AM

I have similar problem with SE 585 cams. They recommended replace valve springs when installing these valves.

Do anybody knows what is valve stem diameter @ 2013 CVO 110cid engine?
Spring supplier like AV&V and Kibblewhite has two stem diameters available: 5/16" and 7mm. I cannot found clear answer on the web pages what springs should be ordered to CVO 110cid engine.

Any recommendations to SE 585 valve springs?
Valve lift is: .584"

Valve stem is 5/16 in the 110 heads.
I like the AV&V beehive spring on them but there are others that you can use.

HD Street Performance · « **Reply #13 on:** November 15, 2015, 10:34:00 AM »

Quote from: Dietea on November 15, 2015, 05:11:32 AM

I have similar problem with SE 585 cams. They recommended replace valve springs when installing these valves.

Do anybody knows what is valve stem diameter @ 2013 CVO 110cid engine?
Spring supplier like AV&V and Kibblewhite has two stem diameters available: 5/16" and 7mm. I cannot found clear answer on the web pages what springs should be ordered to CVO 110cid engine.

Any recommendations to SE 585 valve springs?
Valve lift is: .584"

Run stock springs.

johnsachs · « **Reply #14 on:** November 15, 2015, 06:05:20 PM »

Quote from: HD Street Performance on November 15, 2015, 10:34:00 AM

Run stock springs.

I agree...........

HILLSIDECYCLE.COM · « **Reply #15 on:** November 16, 2015, 06:22:39 AM »

No reason not to.
Scott

Enigmatic · « **Reply #16 on:** November 19, 2015, 07:09:39 PM »

I went through this with my dealer earlier this year. this video was probably made with my head because they had so many issues putting cams in that they ended up sending heads to T-Man to verify nothing was wrong with them.

hope this helps
<div id="fb-root"></div><script>(function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.3"; fjs.parentNode.insertBefore(js, fjs);}(document, 'script', 'facebook-jssdk'));</script><div class="fb-video" data-allowfullscreen="1" data-href="/100157792180/videos/vb.100157792180/10152823764087181/?type=3"><div class="fb-xfbml-parse-ignore"><blockquote cite="

"><a href="

">[/url]<p>Check out this short video on the valve spring travel for a stock CVO 110" and CVO Watercooled head.</p>Posted by T-MAN PERFORMANCE on Thursday, June 18, 2015</div></div>

clearly i don't know how to imbed video! lol but the video is from T-Man Performance on the amount of travel available with stock valve springs. it's available on his fb page
https://www.facebook.com/100157792180/videos/vb.100157792180/10152823764087181/?type=2&theater

HD Street Performance · « **Reply #17 on:** November 20, 2015, 09:50:59 AM »

Begs the question how coil bind exceeds the seal to collar distance unless they tested with the seal out.
Bottom line the stock springs are very safe at .625" lift. I still prefer Beehives because they offer equal valve control with less pressure over the nose.

Enigmatic · « **Reply #18 on:** November 22, 2015, 08:45:15 PM »

That's what T-Man told me as well. Beehives would do just well without the excess seat pressure of stock springs. I just chose to leave them in for the meantime.

Sent from my iPad using Tapatalk

HD Street Performance · « **Reply #19 on:** November 23, 2015, 08:51:07 AM »

The beehives have a higher seat pressure than stock. I compared stock on unaltered heads stock springs vs AV&V 6500s beehives. 155# vs 178#. At mid lift the stock spring pressure begins to exceed the beevive. The beehives spring rate is less.

GMR-PERFORMANCE · « **Reply #20 on:** November 23, 2015, 09:10:01 AM »

Quote from: HD Street Performance on November 23, 2015, 08:51:07 AM

The beehives have a higher seat pressure than stock. I compared stock on unaltered heads stock springs vs AV&V 6500s beehives. 155# vs 178#. At mid lift the stock spring pressure begins to exceed the beevive. The beehives spring rate is less.

We have measured them as well Don, good info

I stated the 600 spring pack earlier in this post , it will still go over the 600 lift number ( with ease) and have less seat pressure than the 650...

47knuckle10cvo · « **Reply #21 on:** June 08, 2018, 09:46:03 AM »

I had 263e cams installed in my 2010 Street Glide CVO 110" at a local dealer. Loved to power above 3k rpm. Having built enough engines to know better I questioned the installed spring height when they were installed and was given the "they are bolt on for the SE 110" answer. I ride hard and used all the cam (RPM). After about 2500 miles past the install I broke a valve spring. I suspect the average Harley shop doesn't have a clue as to the proper installed spring and spring height shimming process. It's pretty a simple concept to understand and not all about seat pressure, all though that is important. More lift compresses the spring more, if compressed beyond spring design the coils will touch. With a little float and coil bind bad things can (WILL) happen. Proper springs alone won't do it. As GMR-PERFORMANCE stated below every cam an spring combo has an optimal installed spring height (pack). This assures proper seat pressure and assures no spring bind. Ask questions and if necessary educate your builder if you are going high lift. All reputable Cam and Valve Spring providers will have the required installed height data.

Author Topic: 2015 cvo valve spring (Read 7918 times)