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techtalk:ref:engmech05j [2020/10/04 22:10] hippysmack [Sifton Breather Valve] |
techtalk:ref:engmech05j [2023/12/22 01:50] hippysmack |
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[[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | ||
====== REF: Engine Mechanicals - Sub-05J ====== | ====== REF: Engine Mechanicals - Sub-05J ====== | ||
+ | ====== Aftermarket Breather Valves ====== | ||
\\ | \\ | ||
====== Plumbing an External Breather Valve ====== | ====== Plumbing an External Breather Valve ====== | ||
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* A 45 ° hose barb fitting was installed to connect a length of hose that leads back along the frame. \\ This way the oil mist gets directed out back and doesn't collect along the frame and engine. | * A 45 ° hose barb fitting was installed to connect a length of hose that leads back along the frame. \\ This way the oil mist gets directed out back and doesn't collect along the frame and engine. | ||
- | |Stock 77-78 tube removed, fitted w/ 1/8" 45° barb fitting. An external valve can be plumbed inline now. ((photos by ericfreeman of the XLFORUM http://xlforum.net/forums/showthread.php?t=1928882)) || | + | |Stock 77-78 tube removed, fitted w/ 1/8" 45° barb fitting. An external valve can be plumbed inline now. ((photos by ericfreeman of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/179539-foo-foo-breather-fitting-alternatives?t=1928882)) || |
|{{:techtalk:ih:engmech:foofoo_vent_mod_pic1_by_ericfreeman.jpg?direct&300|}}|{{:techtalk:ih:engmech:foofoo_vent_mod_pic2_by_ericfreeman.jpg?direct&300|}}| | |{{:techtalk:ih:engmech:foofoo_vent_mod_pic1_by_ericfreeman.jpg?direct&300|}}|{{:techtalk:ih:engmech:foofoo_vent_mod_pic2_by_ericfreeman.jpg?direct&300|}}| | ||
+ | ====== List of Aftermarket Breather Valves ====== | ||
- | ====== Aftermarket Breather Valves ====== | + | **Finding a better breather valve**: ((bunny32 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/10013-blowby-article/page2?t=15705&page=2)) \\ |
- | + | ||
- | **Finding a better breather valve**: ((bunny32 of the XLFORUM http://xlforum.net/forums/showthread.php?t=15705&page=2)) \\ | + | |
The breather valves that work best on crankcase breathers have several features: \\ | The breather valves that work best on crankcase breathers have several features: \\ | ||
* Low-inertia, i.e. they don't take more than a breath to open and close. | * Low-inertia, i.e. they don't take more than a breath to open and close. | ||
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The ball and spring valves will not be able to work fast enough to keep all the air out. \\ | The ball and spring valves will not be able to work fast enough to keep all the air out. \\ | ||
When air is allowed to be drawn back into the engine, it creates a mass that must be compressed by the pistons on downstroke as it is being vented out. \\ | When air is allowed to be drawn back into the engine, it creates a mass that must be compressed by the pistons on downstroke as it is being vented out. \\ | ||
- | This robs some power and will cause the engine to work harder (creating more internal heat at higher RPM). ((Deimus of the XLFORUM http://xlforum.net/forums/showthread.php?t=67658&page=18)) \\ | + | This robs some power and will cause the engine to work harder (creating more internal heat at higher RPM). ((Deimus of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/35356-install-new-crankcase-vent-04/page18?t=67658&page=18)) \\ |
- | Aftermarket PCV's: ((electronbee of the XLFORUM http://xlforum.net/forums/showthread.php?t=72099&highlight=reed+valve&page=10)) \\ | + | Aftermarket PCV's: ((electronbee of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/36799-installing-the-ultimate-crankcase-vent-%C2%93how-to%C2%94/page10?t=72099&highlight=reed+valve&page=10)) \\ |
* Mercedes Benz P/N# 271-018-00-29 ~$13. | * Mercedes Benz P/N# 271-018-00-29 ~$13. | ||
* Reed type PCV valve. Fast acting. Used for their C 230 Kompressor engine. | * Reed type PCV valve. Fast acting. Used for their C 230 Kompressor engine. | ||
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* Makes a clicking noise during operation. | * Makes a clicking noise during operation. | ||
- | | Here is a 2-stroke reed valve. ((photo by norseXL of the XLFORUM http://xlforum.net/forums/showthread.php?t=1386341&highlight=reed)) | | + | | Here is a 2-stroke reed valve. ((photo by norseXL of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/131026-my-mods-to-venting-and-oiling?t=1386341&highlight=reed)) | |
|{{:techtalk:ref:engmech:reed_valve_by_norsexl.jpg?direct&300|}}| | |{{:techtalk:ref:engmech:reed_valve_by_norsexl.jpg?direct&300|}}| | ||
- | | Mercedes Benz P/N# 271-018-00-29 ((photo by electronbee of the XLFORUM http://xlforum.net/forums/showthread.php?t=72099&highlight=reed+valve&page=10)) | Reed Valve ((photo by Bluto of the XLFORUM http://xlforum.net/forums/showthread.php?p=5761290#post5761290)) | Doherty Power Vent ((Photo by goblin_dust of the XLFORUM http://xlforum.net/forums/showthread.php?t=72099&highlight=wet+sumping&page=23)) | | + | | Mercedes Benz P/N# 271-018-00-29 ((photo by electronbee of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/36799-installing-the-ultimate-crankcase-vent-%C2%93how-to%C2%94/page10?t=72099&highlight=reed+valve&page=10)) | Reed Valve ((photo by Bluto of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/197307-sportster-crankcase-pressure-engine-breathing-wetsumping-and-mods/page2#post4317506)) | Doherty Power Vent ((Photo by goblin_dust of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/36799-installing-the-ultimate-crankcase-vent-%C2%93how-to%C2%94/page23?t=72099&highlight=wet+sumping&page=23)) | |
|{{:techtalk:ref:engmech:mercedes_benz_pcv_valve_by_electronbee.jpg?direct&300|}}|{{:techtalk:ref:engmech:reed_valve_by_bluto.jpg?direct&300|}}|{{:techtalk:ref:engmech:deimus_mod_2_by_goblin_dust.jpg?direct&300|}}| | |{{:techtalk:ref:engmech:mercedes_benz_pcv_valve_by_electronbee.jpg?direct&300|}}|{{:techtalk:ref:engmech:reed_valve_by_bluto.jpg?direct&300|}}|{{:techtalk:ref:engmech:deimus_mod_2_by_goblin_dust.jpg?direct&300|}}| | ||
+ | |||
+ | |||
+ | Aftermarket Breather Valves for Harley's: \\ | ||
+ | * Sifton Crankcase Breather ((https://www.ebay.com/itm/SIFTON-CASE-BREATHER-VENT-PCV-VALVE-HARLEY-EVO-SHOVELHEAD-PANHEAD-TWINCAM-KRANK/253213372444?epid=1665559744&hash=item3af4b1701c:g:F4cAAOSwzrxUuDhJ)) \\ This appears to be a cheaper version of the Hayden Crankvent also with an umbrella valve installed inside. \\ It is, however, a one time use part as it cannot be taken apart to replace the umbrella valve. | ||
+ | |||
+ | Aftermarket PCV's: ((electronbee of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/36799-installing-the-ultimate-crankcase-vent-%C2%93how-to%C2%94/page10?t=72099&highlight=reed+valve&page=10)) \\ | ||
+ | * Mercedes Benz P/N# 271-018-00-29 ~$13. | ||
+ | * Reed type PCV valve. Fast acting. Used for their C 230 Kompressor engine. | ||
+ | * Dims: 2-1/2" long by 1-1/8" with an I.D of 1/4". | ||
+ | * McCaster Carr P/N# 4610K17 ~$6. | ||
+ | * Umbrella valve. Vacuum check valve. | ||
+ | * Autozone P/N# PCV1174 (PV272) ~$5. | ||
+ | * Ball/spring based PCV valve. | ||
+ | * Makes a clicking noise during operation. | ||
====== Hayden Krankvent ====== | ====== Hayden Krankvent ====== | ||
- | ==== Sub Documents ==== | + | ===== Sub Documents ===== |
* [[techtalk:ref:engmech04a|Dissecting the Hayden KVP38 Crankcase Breather Valve]] | * [[techtalk:ref:engmech04a|Dissecting the Hayden KVP38 Crankcase Breather Valve]] | ||
* [[techtalk:ref:engmech04b|Frequently Asked Questions About the Hayden Krankvent]] | * [[techtalk:ref:engmech04b|Frequently Asked Questions About the Hayden Krankvent]] | ||
The Hayden valve was built for Harley Davidson motorcycles in mind. Click on the "Dissecting the Hayden" link in the sub docs above to see more. \\ | The Hayden valve was built for Harley Davidson motorcycles in mind. Click on the "Dissecting the Hayden" link in the sub docs above to see more. \\ | ||
- | It is a very good external valve alternative for 1977-present Sportsters. But, they are rather expensive. \\ | + | It is a very good external rubber umbrella valve alternative for 1977-present Sportsters. But, they are rather expensive. \\ |
It uses (1) 91-03 umbrella valve in a custom sealed 2-piece compartment. The umbrella is replaceable by unscrewing the 2 body halves. \\ | It uses (1) 91-03 umbrella valve in a custom sealed 2-piece compartment. The umbrella is replaceable by unscrewing the 2 body halves. \\ | ||
+ | |||
+ | |Hayden KVP38 breather valve, used with the \\ [[techtalk:ref:engmech05d|Deimus Mod]] (cam chest breather conversion). ((photo by 60Gunner of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/197471-crankcase-breather-mod#post5763918))| Hayden Krankvent installed \\ (Deimus mod also) ((Photo by goblin_dust of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/36799-installing-the-ultimate-crankcase-vent-%C2%93how-to%C2%94/page23?t=72099&highlight=wet+sumping&page=23)) | | ||
+ | |{{:techtalk:ref:engmech:deimus_mod_8_by_60gunner.jpg?direct&300|}}|{{:techtalk:ref:engmech:deimus_mod_2_by_goblin_dust.jpg?direct&300|}}| | ||
+ | |||
+ | | Hayden breather opened up. ((photos by leucadiaGuit of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/187973-oil-gremlin-help?t=2004869 cropped by Hippysmack)) || | ||
+ | |{{:techtalk:ref:engmech:hayden_krankvent_3_by_leucadiaguit_-_cropped.jpg?direct&300|}}|{{:techtalk:ref:engmech:hayden_krankvent_2_by_leucadiaguit_-_cropped.jpg?direct&300|}}| | ||
+ | |||
====== CBVC Breather Valve ====== | ====== CBVC Breather Valve ====== | ||
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It was unbranded and with no directional arrow for installation so you'll have to blow into it first before installing to make sure how to plumb it. \\ | It was unbranded and with no directional arrow for installation so you'll have to blow into it first before installing to make sure how to plumb it. \\ | ||
+ | |||
+ | ====== Doherty Power Vent ====== | ||
+ | Made in the USA by Doherty Machine. \\ | ||
+ | Available for head or crankcase breathing engines, with kits for both Evo & Twin Cam engines. \\ | ||
+ | **Doherty Power Vents are no longer being made by Doherty Machine**. ((http://www.cas4.com/engine/engine-crankcase-breathers-breather-valves2.html)) \\ | ||
+ | However, there is another company making this product (see Doherty Style Breather below) \\ | ||
+ | * CNC-machined T-6 billet aluminum | ||
+ | * Show-quality polished finish | ||
+ | * One-way valve prevents backflow | ||
+ | * Kits include machined bolts and plastic washers for a tight seal | ||
+ | * Work with most CV carb and EFI applications | ||
+ | * Accepts 1/8” NPT fitting | ||
+ | * Sold in pairs | ||
+ | * Made in the U.S.A. | ||
+ | * Fitment | ||
+ | * DS21101123, 93-99 80” Evolution | ||
+ | * DS21101122, 99-08 Twin Cam | ||
+ | * DS21101124, 91-08 XL | ||
+ | * DS289600, 70-92 80” Big Twin | ||
+ | |||
+ | |||
+ | |Doherty Power Vents with the line routed up then \\ down and attached to the bottom of the frame. ((photo by RIORoosen of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-intake-and-exhaust/sportster-motorcycle-air-intake-carburetor-efi-fuel-and-exhaust/44522-show-me-your-non-stock-breather-systems/page18?t=146084&page=18))| | ||
+ | |{{:techtalk:ref:engmech:breather_mod_by_rioroosen.jpg?direct&300|}}| | ||
+ | |||
+ | ====== Doherty Style Breather ====== | ||
+ | |||
+ | These are made In the USA By Speed Dealer Customs. | ||
+ | [[https://speeddealercustoms.com/collections/engine-intake-fuel-system/products/smooth-doherty-style-head-breather-kit-custom-choppers|Click here to go to their website]]. \\ | ||
+ | * Features: | ||
+ | * Internal rubber umbrella valve | ||
+ | * Billet aluminum. | ||
+ | * Reduce blow by oil mist. | ||
+ | * Decrease crankcase pressure. | ||
+ | * Stop gasket leaks. | ||
+ | * Will fit 1993 and up Evo type Harley motors. | ||
+ | * Knurled bodies. | ||
+ | * Available in 2 Finishes; black anodized or polished. | ||
+ | * Kit includes: | ||
+ | * (2) 6061 billet aluminum machined bodies. | ||
+ | * (2) Machined 304 Stainless Steel Bolts. \\ (either 1/2"x13 or 3/8"x16 thread patterns) and each 1-5/16" long. | ||
+ | * 4 Hi-Temp O-Rings. | ||
+ | * Also comes in other styles. | ||
+ | * Will not fit 98-01 magnetti mareli fuel injection and '08 and later FLH models. | ||
+ | |||
+ | ====== Reed Valve by Heiden Tuning ====== | ||
+ | |||
+ | Part number (15-0677) Developed by Heiden Tuning in Holland. \\ | ||
+ | It is sold for Yamahas out of Tampa, FL. Here is a link to view / purchase at [[https://www.mikesxs.net/blog/how-to-install-the-pcv-reed-type-valve/|Mikes SX.com]] \\ | ||
+ | This reed type was Positive Crankcase Ventilation valve hooks to the engine top breather vent and allows expelled air out. \\ | ||
+ | But the reed prevents air re-entering quickly so a very small vacuum is created in the crankcase. \\ | ||
====== Sifton Breather Valve ====== | ====== Sifton Breather Valve ====== | ||
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Also an unbranded part. | Also an unbranded part. | ||
- | ====== Regarding horsepower gains from different breathers ====== | ||
- | |||
- | From aswracing on testing breather vents for HP gain: ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=75740&highlight=reed+valve&page=6)) \\ | ||
- | <blockquote>Many years ago, I spent most of a day dyno testing breather check valves. \\ | ||
- | I was writing for Battle2win magazine at the time and published my findings there. \\ | ||
- | The article is here at Nightrider.com: [[http://www.nightrider.com/biketech/crankvent_test.htm|Do Crank Vents work?]] \\ | ||
- | |||
- | I spent several hours on the dyno testing whether or not various breather arrangements affected the power of a motor. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=20871)) \\ | ||
- | Mainly it was a test of these breather check valve devices, but I also tested the recycling of the blowby versus venting to the atmosphere. \\ | ||
- | |||
- | {{:techtalk:ref:engmech:breather_valve_test_results_by_aswracing.gif?direct&700|}} ((chart by aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=20871&page=2)) \\ | ||
- | |||
- | The result labeled "kuryakyn" is the one that's recycling the blowby. \\ | ||
- | So named because I used a kuryakyn adapter to send the blowby back into the intake tract. \\ | ||
- | All the others are vented to the atmosphere. \\ | ||
- | |||
- | The bottom line was that none of them added a single iota of measurable horsepower, despite the grandiose claims of up to 7% from the manufacturers. \\ | ||
- | The only thing I could get to show up on the dyno at all was the removal of the blowby from the intake tract.\\ | ||
- | You can read all about the results in the Nightrider article above. \\ | ||
- | One of the companies involved, ET products (maker of the Spyke Krank vent) took exception. \\ | ||
- | I very carefully retested using their suggestions, but I got the exact same answer. \\ | ||
- | </blockquote> | ||