| Author | Message | ||
     Beachbuell |
The benefits of running XB rocker boxes and covers on a Tuber? | ||
| Phelan |
Two piece gasket set is less likely to leak than the 3 piece set, and the PCV valves at the top of the boxes waste less oil when spooging occurs, which especially helpful if you live in very humid conditions. Plus it looks cool and they are cheap- $31/ea was the last price I got from a 20% off online HD/Buell dealer. I bet a sponsor here somewhere probably offers the discount as well to get that price. | ||
| Kalali |
Also the weight savings will make your Tuber go faster... | ||
| Brinnutz |
I love that arguement. | ||
| Jos51700 |
Plus you're totally eliminating the PCV, which is built into the old-style rockers, but built into the crankcase on XB's, making this a less-than-ideal pursuit! | ||
| Guell |
um, your eleminating the umbrella valves which suck btw, and adding pcv valves which dont spooge as much. | ||
| Dragonwing |
So, is the change a 'good thing' or does the PCV thing outweigh the coolness factor? DW | ||
| Guell |
Its a good thing | ||
| Cyclonemick |
If I remeber right.....I think it was Preybird who switched to the xb set up and he still has spooge so I'm not sold on the benefits, If you need a catch can with or without the xb rockers.....What's the point?  | ||
| Outdoors |
I'm switching because I don't like the look of the hoses on the right side of the motor and I picked up a set of XB covers for peanuts. My M2 still has the OEM paper cover gaskets which need to be changed anyway and since I'm at it I will swap in the new covers. No real good reason for or against but it is a cheap mod and I like to tinker. | ||
| Buellistic |
The "BIGGEST REASON" is you will not "REGRET IT" !!! | ||
| Beachbuell |
I agree Cyclonemick! My point exactly! | ||
| Preybird1 |
I do still have spooge, But it is no where near what it was originally. And it is mostly water and a little bit of oil vapor build up. I removed the stock breather's so it doesn't pollute the fuel intake charge!  Your motor will benefit from this and it will make better power. If you look at this picture closely you will see the small amount of oil floating on top of the water. appearing to be more oil than there really is! | ||
| Ratbuell |
I have NEVER noticed "increased power" from just a breather mod. My 1960 M35A2 Duece-and-a-half, with the Hercules Multifuel engine, REQUIRES one gallon of UMO (used motor oil) be added to each (50 gallon) tank of fuel, to lubricate internal engine parts. Ever think that some oil into the intake tract could be a GOOD thing on these engines? All my bikes - even my S2 with XB rockerboxes (mainly for the one-gasket/two-cover design as opposed to the two-gasket/three-covers) - run stock breathers (except my S1W, which was that way when I got it and I just haven't fiddled with it). Show me a dyno, with *nothing* but a breather re-route causing noticably increased HP...and I'll drink your catchcan. And Jos - the two valves that go into the XB rockerboxes, that the hoses hook to? They *are* PCV valves. | ||
| Buellistic |
Have a PVC valve in my timing plug hole and BLAST PVC valves !!! | ||
| Littlebuggles |
I switched to the XB covers to cut the volume of blow by but still get it as well. I did mine because many had made the change prior to me and reported the mod eliminating the blow by. Perhaps for Russ and I the local elevation, temperature variance, and humidity levels are still sufficient to keep the motor producing some goo? | ||
| Kyrocket |
I think any motor is going to produce at least some about of spooge. I switched over during my rebuild for several reasons, the biggest one being getting rid of a gasket and the umbrella valves. I bought mine off of ebay for a fair price, they came off an XB9 and the extra parts that came with it have gone on to help other Badwebbers. I now take my hoses from the top, T them together and run one hose down the frame, out the rear to the ground. | ||
| Eboos |
I did the rockerbox conversion and routed the line to a catch bottle, then a vent line back to the intake (per CCS rules). The line to the bottle has a hose that goes to the bottom of the bottle, while the vent line is at the top. This should minimise the polluting of my intake charge. Again, mostly water with little oil mist. I tried 2 different conventional style breathers and haven't been satisfied with their function and the ability to route a line. | ||
| Buellistic |
When "i" went to the BLAST PVC Valves(installed in my OEM rocker covers before XB's came out)there was very little, if anything in the catch container ... | ||
| Fasted |
pvc = poly vinyl chloride pcv = positive crankcase ventilation 2 completely different things | ||
| Rick_a |
Mine only had problems at prolonged high rpm. The cure took a long time to figure out. Currently I'm using an XB rocker box/breather on the front cylinder head, an 04+ H-D XL setup on the rear (due to clearance issues with the tank...the XL breather is internal). The XL breather hose always has a fine film of oil, though the XB breather only discharges water. This worked ok, yet still pumped some oil. The next step was an XR750 breather baffle off the cam chest. With an inline PCV valve this engine can run at redline often and the catch cans (there's one that catches the head breathers and a tiny one for the XR breather line) only need draining about every oil change or so, where it's mostly water. |
