Manual LCV - Road Star Warrior Forum : Yamaha Star Warrior Forums

Reply
 
LinkBack Thread Tools
Old 12-18-2019, 07:05 PM   #1 (permalink)
Senior Member
 
insaneduane's Avatar
 
Join Date: Jul 2014
Location: bay area
Posts: 749
Default Manual LCV

So I get an idea in my head and I just can't let it go so here is the beginnings of my manual "LCV"

Getting all the parts together just to get to this was not easy, many different kind of valves out there don't know if this is going to be hard to mount But we will see what happens, I think I can extend a lever on it so that it'll sneak out from behind the left side air scoop.
I'm on vacation so I need and a project And it's raining like crazy now So I'm not looking to do any Winter rides until it dries up.

Heading up to Lake taho Friday morning the snow is freaking crazy this year already got 160in
At the top Sierra at Tahoe👍🤪

Anyways I think this project will work fine just not sure how it's going to mount.
Attached Thumbnails
Click image for larger version

Name:	20191218_145159_1576710192380.jpg
Views:	36
Size:	139.5 KB
ID:	218934   Click image for larger version

Name:	20191218_145351_1576710240006.jpg
Views:	30
Size:	106.0 KB
ID:	218936  
__________________
never take the green light for granite
and you will live another day
insaneduane is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-18-2019, 09:00 PM   #2 (permalink)
Senior Member
 
Churchkey's Avatar
 
Join Date: Aug 2002
Location: Cherokee National Forest, TN
Posts: 8,209
Default

Just a heads up: If you forget to close the valve the bike will go way lean when hot = melted slugs.

The stock LCV is basically a stepper motor design continually closing dependent on oil temp rise with a by pass for momentary application during hot engine restarts.
__________________
Forum member #113


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Brother of the Wind

All things great & small should be horizontal or perpendicular to the center line of the earth.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Churchkey is offline   Reply With Quote
Old 12-18-2019, 09:07 PM   #3 (permalink)
Senior Member
 
insaneduane's Avatar
 
Join Date: Jul 2014
Location: bay area
Posts: 749
Default

Quote:
Originally Posted by Churchkey View Post
Just a heads up: If you forget to close the valve the bike will go way lean when hot = melted slugs.

The stock LCV is basically a stepper motor design continually
closing dependent on oil temp rise with a by pass for momentary application during hot engine restarts.
Well understood and I did already think of that.😉
__________________
never take the green light for granite
and you will live another day
insaneduane is offline   Reply With Quote
 
Old 12-18-2019, 09:08 PM   #4 (permalink)
Senior Member
 
insaneduane's Avatar
 
Join Date: Jul 2014
Location: bay area
Posts: 749
Default

And I'm pretty sure I would noticed the 2000 rpm idle when I came to my 1st stop🤪🤣🤣
__________________
never take the green light for granite
and you will live another day
insaneduane is offline   Reply With Quote
Old 12-19-2019, 01:38 AM   #5 (permalink)
Senior Member
 
alanh's Avatar
 
Join Date: May 2004
Location: The Mitten State
Posts: 8,281
Default

Just my thoughts: The factory LCV isolates the throttle bodies (TB's) to prevent feedback/short circuit when the LCV is Fully Closed.
Your plumbed Tee & shut-off valve will not eliminate the short circuit between TB's. I suspect that this will affect your idle/synch but I've been wrong before.

When the LCV fails in a partially or full open position it also induces fresh air, through the filtered intake port of the LCV, which differs from your intended MOD so this should be interesting.

During the enrichment cycle (High Idle) there isn't an issue that the TB's are cross connected through the filtered intake port of the LCV or your MOD.
Note: You're going to need a controlled orifice for Max Idle RPM or use the valve handle to control the opening
__________________
***1187***

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- Starting System
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
&
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
&
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by alanh; 12-19-2019 at 04:22 PM. Reason: Added Note
alanh is offline   Reply With Quote
Old 12-19-2019, 09:39 AM   #6 (permalink)
Senior Member
 
madtom421's Avatar
 
Join Date: Apr 2010
Location: Connecticut
Posts: 5,537
Default

What are the benefits of a manual lcv vs the factory unit? I've never understood why people remove them in the first place.

Sent from my SAMSUNG-SM-G930A using Tapatalk
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
You can be anything you want on the internet, Strange so many people choose to be stupid. -Mark Twain-
madtom421 is offline   Reply With Quote
Old 12-19-2019, 10:20 AM   #7 (permalink)
Senior Member
 
insaneduane's Avatar
 
Join Date: Jul 2014
Location: bay area
Posts: 749
Default

This is just something that I have to try Don't think it will act much different than the factory valve the only difference is I will be making sure it's closed And not wondering if it's closed. I'm perfectly fine with using the cruise control right now works great.
__________________
never take the green light for granite
and you will live another day
insaneduane is offline   Reply With Quote
Old 12-19-2019, 04:47 PM   #8 (permalink)
Senior Member
 
Bladerunr's Avatar
 
Join Date: Jul 2003
Location: Valley Springs CA
Posts: 2,643
Default

Church is correct... I'm using a solenoid valve on mine. I wired in a flashing led mounted on the tach, to remind me.

Alan is correct... There will be a cross-flow problem the way you have it plumbed. I didn't notice an issue with idle stability. It will cause big time " pipe pOp " on decel. I solved that problem with a pair of check valves.
Bladerunr is offline   Reply With Quote
Old 12-19-2019, 08:17 PM   #9 (permalink)
Senior Member
 
Sandytows's Avatar
 
Join Date: Jul 2015
Location: Maine/Mass/NH
Posts: 807
Default

Quote:
Originally Posted by madtom421 View Post
What are the benefits of a manual lcv vs the factory unit? I've never understood why people remove them in the first place.

Sent from my SAMSUNG-SM-G930A using Tapatalk
I removed mine when I relocated my coils under the tank because I wanted to clean up the look of the front cylinder. It was purely aesthetic for me, I know other people who have removed them because they've had failures of them and didn't want to pay I put a new one in.

Sent from my SAMSUNG-SM-G930A using Tapatalk
__________________
2007 Graphite/Silver, Churchkey Vbak, Samson StreetSweepers w/ Big City Thunder baffles, AIS Delete, Akitadog coil plate, LCV delete, DynaCoils under tank, Ivans ECU Flash, PCV with Ivans Map, Left side cleanup, Right side horn brake cleanup, 3-full plate clutch mod, BArnett Clutch, Pulley change 33/68, Cyclops 3800 headlight
LOTS of Chrome!

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Sandytows is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Road Star Warrior Forum : Yamaha Star Warrior Forums > Warrior Forums > Technical Discussion

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 12:59 AM.


Powered by vBulletin® Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
RSWarrior.com is an independent Yamaha enthusiast website. Content on RSWarrior.com is generated by its users and RSWarrior.com is not in any way affiliated with Yamaha Motor Corporation, U.S.A.