EVO Crankcase Breathing
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Joined: May 2018
Posts: 4,576
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From: Viet Vet, crossroads
I have no clue what you are doing, or what you are measuring.
The timed breather obviously turning slower at low RPM.
So you might feel a longer larger puff of air?
I have no clue what other vent you could be playing with.
No matter as monometer is not a valid tool to use on a Harley V twinn
The timed breather obviously turning slower at low RPM.
So you might feel a longer larger puff of air?
I have no clue what other vent you could be playing with.
No matter as monometer is not a valid tool to use on a Harley V twinn
Grand HDF Member
Joined: Nov 2009
Posts: 4,315
Likes: 1,663
From: Tampa
I know, right???
"to adjust timing, look in this hole that's blowing a bunch of oily air at you at the speed of sound while running circles around your bike to make small adjustments each pass..."
Fugging circus timing these bikes I tell ya. I can see why so many people just get that Ultima thing on eBay for $160. Set it to TDC and let the little green board with all the magic chips do the work. I'll be converting my timing inspection hole to the oil return off the turbo once that project gets under way.
"to adjust timing, look in this hole that's blowing a bunch of oily air at you at the speed of sound while running circles around your bike to make small adjustments each pass..."
Fugging circus timing these bikes I tell ya. I can see why so many people just get that Ultima thing on eBay for $160. Set it to TDC and let the little green board with all the magic chips do the work. I'll be converting my timing inspection hole to the oil return off the turbo once that project gets under way.
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Joined: Jun 2009
Posts: 53
Likes: 1
From: Creedmoor, NC
I have no clue what you are doing, or what you are measuring.
The timed breather obviously turning slower at low RPM.
So you might feel a longer larger puff of air?
I have no clue what other vent you could be playing with.
No matter as monometer is not a valid tool to use on a Harley V twinn
The timed breather obviously turning slower at low RPM.
So you might feel a longer larger puff of air?
I have no clue what other vent you could be playing with.
No matter as monometer is not a valid tool to use on a Harley V twinn
Like a lot of Evo owners, I have some oil carry-over coming out the breather hose. More at idle speed, than at cruising speed.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,293
Likes: 6,322
From: Honah Lee
I removed the air cleaner cover on the S&S carb where the crankcase vent line terminates and cranked it up. there is more air coming out at idle, as compared to 2,000 RPM. Why?
I'm no typist! It is a vent line and not a "cent" line. I did not realize ba typo offended so many... LMAO!
I'm no typist! It is a vent line and not a "cent" line. I did not realize ba typo offended so many... LMAO!
I knew it was a scent hose.haa...Just funning with you but I did not know where you had it terminating. Lots of knuckleheads unhook it and vent it to the outside. Glad you still have it hooked up.
Yours has the timed rotary valve. But to answer your question, not a clue unless at the higher RPM. Maybe the rings blow out harder and seal better. That way there is less blow-by. If you put a vacuum/pressure gage on it, do you ever see a vacuum? Know when I balance twin carbs on V-Twins, the vacuum jumps between vacuum and a slight pressure. So I have a two hose setup with a column of heavy oil that I use. I have seen a couple that were worn and actually ingested my oil before I could catch because they were so far off.
Last edited by Jackie Paper; Jun 14, 2018 at 03:55 PM.
Banned
Joined: May 2018
Posts: 4,576
Likes: 978
From: Viet Vet, crossroads
I know, right???
"to adjust timing, look in this hole that's blowing a bunch of oily air at you at the speed of sound while running circles around your bike to make small adjustments each pass..."
Fugging circus timing these bikes I tell ya. I can see why so many people just get that Ultima thing on eBay for $160. Set it to TDC and let the little green board with all the magic chips do the work. I'll be converting my timing inspection hole to the oil return off the turbo once that project gets under way.
"to adjust timing, look in this hole that's blowing a bunch of oily air at you at the speed of sound while running circles around your bike to make small adjustments each pass..."
Fugging circus timing these bikes I tell ya. I can see why so many people just get that Ultima thing on eBay for $160. Set it to TDC and let the little green board with all the magic chips do the work. I'll be converting my timing inspection hole to the oil return off the turbo once that project gets under way.
As i am thinking of doing it the other way finding TDC and drilling the points cover method
Grand HDF Member
Joined: Nov 2009
Posts: 4,315
Likes: 1,663
From: Tampa
And you get single fire ignition, for what that's worth.
Banned
Joined: May 2018
Posts: 4,576
Likes: 978
From: Viet Vet, crossroads
https://www.ebay.com/itm/Ultima-Sing...kAAOSw-09aA4P6
And you get single fire ignition, for what that's worth.
And you get single fire ignition, for what that's worth.
Same thing ? I think.
Even so, TDC has to be known as Daytona TT has no clue where it is.
It is dependent on the install (at least with Daytona)
Club Member
Joined: Apr 2011
Posts: 5,776
Likes: 7,811
From: SE Louisiana
Easy to make out of an old spark plug.
Set it to stop the piston a few degrees before TDC, make a mark, rotate backwards until the piston contacts the stop tool again, make another mark, TDC is halfway in between, same method to set up a degree wheel.
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