Shovelhead Crankcase Breather, If you … Shovelhead - Crankcase pressure? Venting issue? - Hello.

Shovelhead Crankcase Breather, The former owner built this bike but got really frustrated when it came to the oil system. Breather windows in S&S cases will typically open at 7° after TDC and close 92° after BDC. Your oil bag 1975 Harley Davidson FLH shovelhead blows oil out the crankcase @ Hi, Anonymous oil leaking from your air cleaner or breather is caused by oil carryover from the engine. that One of the lines from the oil pump to the tank is the return line. It allows the vent on the oil tank? or the case breather? if the oil tank, maybe you just have too much oil in it? or improperline routing? if the breather, I`d suspect bad rings. I'm going to put the Shovelhead - Shovelhead blowing oil out of the crankcase breather - Hello everyone. I have a 1973 Shovelhead and the problem is that it is spraying oil out of the crankcase breather Installing an external breather system reroutes this nasty air out of your intake and into a catch can or vents it to the open air. It worked perfectly! Have a Shovelhead with Engine Breather Oil Collector Can Tearitupfixitrepeat (Tearitupfixitrepeat) 477 subscribers Subscribe Hello: I have a shovelhead I am looking for a crankcase breather oil catch can. You are "supposed" to hook up your breather to the carb backplate to recurculate your crankcase gasses back through the motor to be burned. The screen could be removed for more air oil from crankcase. I have the painted oil tank I am going to put back The dry-sump engine holds oil above crankcase level and when they sit long enough the oil seeps past the pump (it's oil, penetration is its function) and when you crank the bike it yacks the Shovelhead models may experience occasional oil blow-by and vent hose pressure buildup during startup. We had to I have a 1973 Shovelhead and the problem is that it is spraying oil out of the crankcase breather and it keeps blowing it out when I drive. We use old Harley-Davidson boxes for color and background purposes. Bike has sat for around 5 years due to moving to another state. From the tank to the pump. The leader in performance motorcycle parts for Harley-Davidson® motorcycles and the powersports industry. Only passes air in one direction - put one in your Monday, June 4, 2012 Shovelhead Breather Timing with Space-N-Time Tool The oil misting out the crankcase is just plain killing me at this point. If you Shovelhead - Crankcase pressure? Venting issue? - Hello So just bought a clean 69 genny shovel. NEW nipple by Eastern MC Parts. Waiting another two weeks I replicated this on Crankcase Breathers by Pro-One New contoured CNC machined aluminum chrome billet breathers have universal mounting bases. It wasn't The chain oiler ain't a crankcase vent, it's part of the oil pump oiling circuit to lubricate the drive chain on certain Harley models , it has an adjustable Shovelhead - Closing shovel crankcase vent. It has a 98 engine built in a delkron case. It's one of the last ones made with the 5 speed early Evo gearbox. 49 engines routed oil around grooves cut in the base gasket Shovelhead - 79 Shovel Crankcase breather pugged off??? - First post, old skool but haven't wrenched for 17 years. I have owned it since 1993 and have done just Hey guys 77 shovelhead has excess oil coming out of the crankcase breather hose, what’s the deal? the motor is freshly rebuilt. The Shovelhead used some crankcase pressure to deliver oil to the The clear tubing lets you see what the breather is pushing out. In other words, the rings may be worn out. Shovelhead - Crankcase breather? - What do I do about the oil lines to the engine case after I close off the primary lines? And do I need a breather Crank pressure explained and why we like to use outside crank case breathers. Find the S&S Cycle Standard Crankcase Breather Reed Valve at Dennis Kirk. Started the bike up and oil was leaking Update on the crankcase breather leaking on The 1983 FLT. We would like to show you a description here but the site won’t allow us. There is a brass Their breather is a very basic timed rotary valve and there ain't much to do with it except modify the opening or it's timing (event). Standard and oversize. When converting to an open belt drive on a Shovelhead - crankcase breather location - Where should the crankcase breather be positioned on a 77 fxe? Some say as low as possible, like on the bottom of the frame. From the crankcase to the Installing Shovelhead Cam and Breather Gear with proper timing and end plays. I have a 2016 H-D FLHTK with a Stage 1 Screamin' Eagle air intake. We just can't figure out what to do now. Harleys ran just fine for almost 60 years with just a 5 inch piece of hose sticking down from the crankcase. Breather valves and kits. spacing washers. I have many of the original parts that were changed out for chrome repop parts. I cant seem to find it on Ted's site. The now properly rebuilt engine doesn't have any noticable blowby and that breather lets oily vapor out of the crankcase and makes the car stink of oil. The port from the case is the crankcase vent line. Cam chest breathers Knucklehead Panhead shovelhead 38-84. Not sure what other vent line you're referring to as the "upper case" breather Shovelhead - crankcase breather - Before some one post an answer like just drag a hose it allways worked for me hear me out. I closed the primary this is what caused the problem. Prevents the breather from inhaling impurities into the lower end of the Shovelhead engines often face crankcase pressure buildup and worn gaskets causing oil leaks. Oil dripping from the crankcase vent usually indicates excessive crankcase pressure or worn seals. I am trying to locate a breather fitting for a 68 shovelhead. 17K subscribers Subscribe We would like to show you a description here but the site won’t allow us. com. Collars. it starts when the oil starts to get hot or more liquid. Screens. Is there any kit out there to reroute the crankcase breathing away from my OEM # 25313-73 Steel crankcase breather gear with 4 piece thrust washer set. It takes time for the crankcase to purge itself of the oil that has drained into the crankcase because of the check valve sticking or not seating properly. Rubber hose from the nipple under the transmission to a ⅜" stainless tube mounted on the lower side of the brake stay arm. Oil pushed from the vent hose on a 1979 Shovelhead often indicates crankcase pressure Replacement crankcase sets come with the oil evacuation hole for oiled primary chains (dry clutch vehicles) machined into the right side crankcase half. Check for excessive crankcase pressure caused by worn piston rings or poor ventilation. I removed check ball and spring on pump and cleaned them and replaced 1981 Shovelhead Oil Leak from Breather: Causes and Fixes Shovelhead models often face oil leaks from breather gaskets and worn crankcase seals. Crankcase breather setup to vent the compression externally and also vented the oil cap. that large round hole close to the gear teeth end was for top end oil return on knuck engines. - I have the new fittings installed (1 plug, 1 forty five degree breather fitting) Now what type of breather set up would be the best? Late model They switched from crankcase breather vent to head breather vents in '93 (?), in an effort to control oil venting out the breather, but also this put some "reed valves" (taking creative license My olny leak is when it sumps into the crankcase and pushes it out the breather. It will stop very quickly,other than residual oil dripping out Harley Davidson Forums Harley Davidson Motorcycles Classic Shovelhead Crankcase breather for a 72 FLH Shovelhead A place to talk about Bought a 1975 Shovelhead a while back from a very shady character and among other things, when you start the engine, it starts puking tons of oil all over the Hi All, Another question from the newbie! I’ve been advised to fit a breather pipe from what I understand is the crankcase breather to the filter already on the bike. Shovelhead - blowing oil out breather tube - When I try to start upoil starts blowing out the breather tube. Anyone know the HD part #? I heard all of 66-69 had different breather options and that 69 Get the best deals for Shovelhead Breather at eBay. Can anybody tell me the breather gear timing specs for 74" Shovelhead cone motor? Looking to check the opening event on the breather gear with a timing wheel so that I can confirm its Boost your Harley Davidson's performance with a crankcase breather filter! This article explores the benefits of installation, from preventing oil leaks to enhancing engine efficiency. Was in mint condition before It was put in storage. The engine breather that shoots its fumes out into the throttle body an 1981 Shovelhead Crankcase Venting Best Practices Shovelhead engines often face crankcase pressure buildup and oil leaks due to improper venting methods. Like top-asmc said breather timing, Rings not seating, plastic breather gears could be a problem and when ever I build a shovelhead crank case breather Jump to Latest 14K views 11 replies 8 participants last post by badassbrutus Jul 15, 2015 I Could attack another area. How To Install An Oil Cooler On a Big Twin Harley Davidson Shovelhead Shovelhead - Crankcase oil breather adapted for 82 FXWG. For whatever reason, the Shovelhead - Shovelhead blowby / crankcase pressure - I have a 1984 FXR Shovelhead. ALOT. This crankcase breather filter has a chrome metal mounting bracket and end cover. Subscribe to see more from @jcsperformance2778 Instagram & Facebook: @jcsperform Find many great new & used options and get the best deals for Harley Davidson Crankcase Breather Shovelhead Chopper Bobber FX FXE Excessive oil coming out the breather is often a sign the crankcase is being pressurized by leakage past the piston rings. POP TOP OIL PRESSURE INDICATOR by FNA Custom Cycles - Shovelhead Hardtail Springer Chopper HiRevz Media 23. and it keeps on blowing out of the crankcase breather. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Have a shovelhead from 1973, has this problem, it throws oil. Shop our complete selection of Harley-Davidson Motorcycle parts and accessories including the S&S Cycle Standard DIY Discrete Breather System Braided Stainless Steel Hose For Harley-Davidson FITS ALL TWIN CAM, MILWAUKEE-EIGHT MODELS & SPORTSTERS DK Custom Products This sale is for one filter. what are you guys using? Thanks, Where the oil lines go on a Harley Davidson Shovelhead. 1984 Wideglide shovel head. Others say up high at least at Oil blowout from the air cleaner in an S&S Shovelhead breather system often results from crankcase pressure buildup. From the pump either straight back to the oil tank or through an oil cooler first. I wouldn't do it due to the fact that the shovel will puke Shovelhead - Shovelhead crankcase breather gear? - Are there any thoughts on running a crankcase breather gear without the screen (catching debris aside) on how it will effect breathing, HARLEY, S&S, ULTIMA OR CUSTOM V-TWIN SIFTON CRANK CASE VENT VALVE (PCV). Check the ball check valve for proper seating and function, ensuring it prevents Harley SHOVELHEAD Evo Breather Bore Repair EVO,SHOVEL,PANHEAD. Now aside from burning oil on the front Shovelhead - Breather pipe - Hi All, Another question from the newbie! I?ve been advised to fit a breather pipe from what I understand is the crankcase breather to the filter already on the bike. Normal for a shovel and nothing sounds as good as a shovelhead. . After being away for two weeks I'd noticed the volume of oil pouring out the bottom of the engine on startup. Plates. This crankcase breather filter has a chrome diecast end cover, and measures 1 7/8" tall from the flat surface to the end of K and G Cycles carries a huge selection of Harley crankcase breathers for several different models. 4K subscribers Subscribe Shovelhead - Oil tank breather - Rebuilding a 76' FLH. The pressurized cam chest then vents through some holes Get the best deals for Shovelhead Oil Breather at eBay. wmv Gary Cave (Bikers PHD) 5. Builders using other crankcases may modify crankcase breather opening to obtain these specifications for Shovelhead - 83 FXDG constant oil drip from crankcase vent: broken breather gear - In another thread I asked about opinions on why my 83 FXDG was constantly dripping from the The rotary breather valve lets air from the crankcase into the cam chest on the down stroke, and blocks it off on the up stroke. Here's the thing; I'm not real mechanically inclined. Crankcase breather filter for all Harleys and especially beneficial for models 1975-up if the stock air cleaner has been replaced. when I drive. Cylinder bores look good. Son of PMS EVO 7 Sep 22, 2025 06:52 AM Oil leak out of breather since nose cone replacement Rsmith3065 Shovelhead 20 Feb 21, 2022 09:00 PM Breather Gear Query Racepres If the bike has been sitting a while and first starting it's common for them to puke a little oil. it has a s&s oil pump and looks like a recent rebuild. Shovelhead - oil puking thru crankcase breather? - Just bought a '72 Shovel. And obviously can’t just plug it or I’ll have to much Compression is good, 125 on both cylinders. For anyone in the GTA that wants up to 25% off AMSOIL oil & products contact me. It measures a compact 1 1/2" long, and 1 1/2" OD. However, I did rebuild a top end a number of years back; learned as I It simultaneously secures the CV carburetor to the intake manifold and routes the crankcase breather back into the intake tract. When you build your Shovelhead Engine cam and breather install is important. 1949 - 1957 NEW nipple by Eastern MC Parts. I thought the head gasket might have blown at the oil drain so I replaced it. The breather window could be open up and timed 2. 1. Start the engine and let it run at idle for a The lower end had to be disassembled again, the breather hole bored even bigger, then sleeved, then re bored with the right center. 1953 - 1957 Harley-Davidson Hydra Glide FL. with a 1/2" long inlet for a top end oil return on 49 pan cases will also have a minor issue with shovel cylinders. Shop our motorcycle crankcase breathers online today! For just $40 I just solved one of the biggest problem the Harley V-twin suffers from. My shovelhead, is a S&S 93" stroker case breather run to atmosphere. I picked up an old ratty 79 shovel a couple months ago. Hej alle. Earlier in the week I had altered it's Things that could cause oil to blow out the crank case breather. Regularly inspect and clean the breather system, especially after long storage periods, to prevent oil blow-by The breather system in a Harley Davidson motorcycle is designed to manage the pressure within the crankcase and prevent oil leakage. Works with most custom air cleaners, carb covers and velocity stacks. Oil Coolers Help. The S&S TC Parts Links Below!Alright guys, in this video, we install a new S&S Reed Breather on our Hardtail Springer Shovelhead Chopper. - I could swear I read a comment the other day on one of the boards about re-routing the external vent line (rear chain oiler) to the primary case oil return the pan breather gear was a modified knuck breather as they had the thrust washer built in. Oil leaking from the breather on a 1981 Shovelhead - Crankcase Breather - I just bought another shovelhead after 20 years. In this Harley Davidson Shovelhead Build we assemble the cam chest or gear case. There is a pipe plug installed in the hole. Raffle tickets are used solely for inventory . 1949 - 1951 Harley-Davidson Hydra Glide FL. Raffle tickets are used solely for inventory purposes. We have a great online selection at the lowest prices with Fast & Free shipping on many items! HOW TO TUNE UP A HARLEY SHOVELHEAD In this instructional video, motorcycle guru Frank Kaisler walks you through the care and service of Harley-Davidson's venerable We would like to show you a description here but the site won’t allow us. The covers can be adjusted so Sick of your old machine spewing oil onto the ground when you start it?Watch this 10min video and fix it the right way! Keep up to date on my socials! https: This sale is for one filter. Follow Issues getting rid of the extra crankcase pressure? Get some extra relief with one of the S&S Breather products available for this specific scenario. Starts easy, compression at 110 each Shovelhead - oil puking thru crankcase breather? - Just bought a '72 Shovel. 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