CVO 110 twin cams, running hot

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CVO 110 twin cams, running hot

2/3

brash
6 years ago

The SE lifters whilst not the best are not helped by the cam profile of the 255 causing premature failure.

255 + SE lifter = shitshow
any other cam + SE lifter = much better lifespan

Wholehog
6 years ago

i know this is a thread for CVO 110s , but i used to run a 103 with SE255 cams and it also ran pretty hot and on occasion would ping under load on a hot day..Swapped the cams for SE 585s with high comp pistons ....cant wipe the smile away now.

Ratbob
6 years ago

Quoting Wholehog on 25 Apr 2019 03:48 AMedited: 25 Apr 2019 03:51 AM
i know this is a thread for CVO 110s , but i used to run a 103 with SE255 cams and it also ran pretty hot and on occasion would ping under load on a hot day..Swapped the cams for SE 585s with high comp pistons ....cant wipe the smile away now.

Bloody excellent thanks Wholehog. Can you recall whether you used 10.2 or 10.5 pistons?

CANCEL that mate, I just read your other post, 10.5 Cheers

paulybronco
6 years ago

Quoting Wholehog on 25 Apr 2019 03:48 AMedited: 25 Apr 2019 03:51 AM
i know this is a thread for CVO 110s , but i used to run a 103 with SE255 cams and it also ran pretty hot and on occasion would ping under load on a hot day..Swapped the cams for SE 585s with high comp pistons ....cant wipe the smile away now.

You running a 2-1 pipe by the look of the graph...?

Ratbob
6 years ago

Quoting Wholehog on 25 Apr 2019 03:48 AMedited: 25 Apr 2019 03:51 AM
i know this is a thread for CVO 110s , but i used to run a 103 with SE255 cams and it also ran pretty hot and on occasion would ping under load on a hot day..Swapped the cams for SE 585s with high comp pistons ....cant wipe the smile away now.

Quoting paulybronco on 25 Apr 2019 08:59 AM
You running a 2-1 pipe by the look of the graph...?

Hi PB, guess you picked up on the early torque dip. He’s running Bassani Road Rage, it’s in the fine print, bottom left. Not uncommon is it and kinda makes sense if the theory’s true that you need back pressure for early torque, maybe that’s why it’s claimed the Supertrapp disc system works across a wider rev band. Ugly buggers though.

Wholehog
6 years ago

Quoting Wholehog on 25 Apr 2019 03:48 AMedited: 25 Apr 2019 03:51 AM
i know this is a thread for CVO 110s , but i used to run a 103 with SE255 cams and it also ran pretty hot and on occasion would ping under load on a hot day..Swapped the cams for SE 585s with high comp pistons ....cant wipe the smile away now.

Quoting paulybronco on 25 Apr 2019 08:59 AM
You running a 2-1 pipe by the look of the graph...?

Yeah...I was wondering about the torque dip on the graph myself...So it’s due to the 2into 1 ?
You know I don’t really feel it when riding though....comes out of the box pretty decent and keeps pulling away thru to where I would normally shift up or back off .

speedzter
6 years ago

A "torque dip" is not just a 2-1 thing.
Any bad, or even just the wrong pipe for the build, or bad tune can show similar issues.

The dip looks worse than it is because of the way Dyno operator started the run.
No one goes WOT at 1500 rpm .

Wholehog
6 years ago

Quoting speedzter on 26 Apr 2019 01:23 AM
A "torque dip" is not just a 2-1 thing.
Any bad, or even just the wrong pipe for the build, or bad tune can show similar issues.

The dip looks worse than it is because of the way Dyno operator started the run.
No one goes WOT at 1500 rpm .

Yeah .....thanks for that.I get what u mean about just nailing from 1500 to.
Cheers

paulybronco
6 years ago

Quoting Wholehog on 25 Apr 2019 03:48 AMedited: 25 Apr 2019 03:51 AM
i know this is a thread for CVO 110s , but i used to run a 103 with SE255 cams and it also ran pretty hot and on occasion would ping under load on a hot day..Swapped the cams for SE 585s with high comp pistons ....cant wipe the smile away now.

Quoting paulybronco on 25 Apr 2019 08:59 AM
You running a 2-1 pipe by the look of the graph...?

Quoting Wholehog on 25 Apr 2019 10:52 PM
Yeah...I was wondering about the torque dip on the graph myself...So it’s due to the 2into 1 ?
You know I don’t really feel it when riding though....comes out of the box pretty decent and keeps pulling away thru to where I would normally shift up or back off .

Yes its a trait of the 2-1 pipe and yes you dont really notice it while riding

ralphski
6 years ago

" If you want to wake the thing up a set of 10.5:1 pistons , a cam to suit and a 58 throttle body with a Lushy tune will get your attention."
fckn love my Hoody 110 engine build, SE 263 cam's, SE 10.5 pistons, SE 58mm t/b, heads machined by Hoody. Tuned by Lushy, 134 hp and 122 tq
oh, and my V & H 2 into 1's, NO TORQUE DROP.

Ratbob
6 years ago

Hi Hoody, a lot of ground to cover there, thanks for responding.
Basically the subject here is 110’s running hot. I’m not looking for much other than cooler running. I’ve ridden bikes with 120 engines, 58 TBs, SE266 cams etc, hate em. I’m no rev head. Lazy torque, that’s me, partly why I bought the CVO.

You mentioned running a +4 degree key with a 585 would result in 24/41. The figures I get, opening then closing are 22 32 / 52 9. Maybe you’re thinking of an S&S585. Here I’ve been discussing the SE585.

As you mentioned, I agree it can be good to compare other cams in a similar/desired opening closing range and why not use them. In conjunction with the Andrews 4 degree key the SE585 is almost identical to an SE204 (not saying that’s a great thing)
585 = 22 32 52 9
204 = 22 34 52 8
But with the SE585 you get .584 lift vs .508 and greater duration.
As you said SE 110 springs can take .600 Lift but I thought the heads were happier closer to .590. Is that correct?

I’m familiar with the 57h but not the MR 103. The exhaust closing at 72 degrees seems late, Could it be a typo?

fatbat
6 years ago

Quoting paulybronco on 25 Apr 2019 08:59 AM
You running a 2-1 pipe by the look of the graph...?

Quoting Wholehog on 25 Apr 2019 10:52 PM
Yeah...I was wondering about the torque dip on the graph myself...So it’s due to the 2into 1 ?
You know I don’t really feel it when riding though....comes out of the box pretty decent and keeps pulling away thru to where I would normally shift up or back off .

Quoting paulybronco on 26 Apr 2019 10:45 AM
Yes its a trait of the 2-1 pipe and yes you dont really notice it while riding

How many different 2-1 exhausts have you owned on Harleys?

paulybronco
6 years ago

Quoting Wholehog on 25 Apr 2019 10:52 PM
Yeah...I was wondering about the torque dip on the graph myself...So it’s due to the 2into 1 ?
You know I don’t really feel it when riding though....comes out of the box pretty decent and keeps pulling away thru to where I would normally shift up or back off .

Quoting paulybronco on 26 Apr 2019 10:45 AM
Yes its a trait of the 2-1 pipe and yes you dont really notice it while riding

Quoting fatbat on 27 Apr 2019 11:37 AM
How many different 2-1 exhausts have you owned on Harleys?

What? Two both with different exhausts....

Grease Monkey
6 years ago

Hoody is buying and fitting an SE 585 with a +4 sprocket into a cvo110 something you would recommend or would you pick another cam?

Nutty
6 years ago

The OP (Ratbob) posted that the bikes had stock headers and slip-ons. Anyone with a heat issues on a Twinkie needs to take three initial steps.
1) Mid-body heat deflectors on Tourers ($20 on eBay)
2) Get rid of the cats (decat or new header)
3) new tune

Just these three mods will make an incredible difference, the cats make a lot of heat in themselves and also stop heat escaping out the pipes. Fattening up the idle fuel settings helps a fair bit too.

paulybronco
6 years ago

Quoting Nutty on 28 Apr 2019 05:35 AMedited: 28 Apr 2019 05:41 AM
The OP (Ratbob) posted that the bikes had stock headers and slip-ons. Anyone with a heat issues on a Twinkie needs to take three initial steps.
1) Mid-body heat deflectors on Tourers ($20 on eBay)
2) Get rid of the cats (decat or new header)
3) new tune

Just these three mods will make an incredible difference, the cats make a lot of heat in themselves and also stop heat escaping out the pipes. Fattening up the idle fuel settings helps a fair bit too.

I must agree on the decat......the heat reduction was very evident

Ratbob
6 years ago

Quoting Nutty on 28 Apr 2019 05:35 AMedited: 28 Apr 2019 05:41 AM
The OP (Ratbob) posted that the bikes had stock headers and slip-ons. Anyone with a heat issues on a Twinkie needs to take three initial steps.
1) Mid-body heat deflectors on Tourers ($20 on eBay)
2) Get rid of the cats (decat or new header)
3) new tune

Just these three mods will make an incredible difference, the cats make a lot of heat in themselves and also stop heat escaping out the pipes. Fattening up the idle fuel settings helps a fair bit too.

Hey Nutty
Yeah I’ve seen those ball protectors, not sure how effective they are when idling at the lights.
I have a decatted header. Just removing the cat on a Dyna header IMO doesn’t work, you end up with a two into one untuned tub back into two pipes and the engine didn’t seem to run any cooler, my right foot felt better though.
I tried that system and found it dulled performance, no I don’t have a Dyno chart, it just felt that way.
I then cut the pipe open, well Redline exhaust did and welded in a divider plate to make it a “true dual” system. I then had it ceramic coated inside and out. Cost $600. This felt better, performance with three different slip on mufflers sets was great. Best was the SE slip ons. I’ve offered this header system up for sale a few times for $200 but no takers.
As for tune, yeah, gotta agree, I’m sure Lushy will deliver the goods but I gotta get the bike where I want it before I bother him, getting close. Cheers

Ratbob
6 years ago

Cheers Hoody, thanks for the advice re lift.
Sometimes I think I should just get "old mate" to tune the bike but as she's hit 10 years old I figure it can't hurt to take a look indise and while it's open etc.
Weird, I got the cam timings off the S&S web page, guess we all make typos.

fatbat
6 years ago

Dunno if it’s a misprint or not but there are a few s&s cams with unusual exhaust specs but they seem to usually work well if added to the right combination of parts. Have a look at the specs on their 635ho cam. It’s very unusual

Ratbob
6 years ago

Quoting fatbat on 29 Apr 2019 02:44 AM
Dunno if it’s a misprint or not but there are a few s&s cams with unusual exhaust specs but they seem to usually work well if added to the right combination of parts. Have a look at the specs on their 635ho cam. It’s very unusual

Yeah mate, not noticed that before, it's a bit similar to the SE259e up to the exhaust closing, it sure has a swag of lift and duration too, bet it has a nice idle.
259e 19 47 58 12
635ho 19.5 43.5 58.5 37.5

Topics

2/3

CVO 110 twin cams, running hot

CVO 110 twin cams, running hot

brash

Wholehog

Ratbob

paulybronco

Ratbob

Wholehog

speedzter

Wholehog

paulybronco

ralphski

Ratbob

fatbat

paulybronco

Grease Monkey

Nutty

paulybronco

Ratbob

Ratbob

fatbat

Ratbob