engine

I have a 1982 Heritage Special that I am working on and was just wondering what the average running temperature of the motor would be? I have installed a Trail Tech Vapor speedometer which has a temperature gauge on it with a warning light for high temp. Just wondering what to set it at? Thanks

hey all! went to dan at pandemonium choppers this weekend with my engine to hopefully. the cam chain adjustment cap had some steel wool and a few lock washers just laying in there not sure what that was all about. The oil was clean and no shavings of any sorts in the oil filter. after he made...

Hello all, I recently tore down my engine because of couple of issues 1) small ends are loose and 2) steel chips in oil filter. One time the cylinder bottom gasket slipped and ended up in the engine. It then found its way to the oil filter. The filter tore apart and the chewed gasket went...

Hey guys,, I know there are some high performance members here and I would like to run this by those who know. Building my first, and probably the only bike I will own so I am taking my time and doing the things I want. It is a 1979 XS Special with an engine from an 82 as the original...

Hey guys, Just wondering if anyone runs the motul 5100 in their XS650's? Either the 10w50 or the 10w40. Reason for asking is that i already run it in one of my dirtbikes so it'll be easier to buy in bulk. Thanks in advance :thumbsup:

So I have the bike torn down and rewired and all but ready to ride and I go to find that one of the mounting points for the stator to be bolted down has been destroyed. Looks to me that the PO broke a bolt off. Then broke an easy out. Then decided to drill it. The hole is mangled. No chance...

Hey guys, im new to porting the xs650 head, and have read and researched closing the ports up slightly in specific areas to increase velocity. Has anyone ever used Moroso's port filler? I am curious if it will handle the heat of an air cooled head. Does anyone have any other experiences with...

been playing with the Dremel. this head is going back on the '73 motor that's getting top end work for the next build. figured i'd document it for possible resale down the road. valves were cleaned up and lapped in thoroughly. i think later i'll build a symmetrical 2 into 1 carb intake for a...

Picked up a set of these. http://www.ebay.com/itm/331370718747?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT I was going to try the KEDO Flat Ball Valve Adjusters, but they wanted $55 for a set of two, so I'll see how these work out.

My friend has a 1975 XS650 that was recently rebuilt. He has about 200 miles on the rebuilt engine. He rode the bike over to my house and while it was idling I saw black oil dripping from his exhaust tip. I dipped my finger in and and it clearly smelled like burnt oil. Since this was a recent...

starting to do some work on my 78 special , and I am looking for a thread I am sure I seen here and now can't find. It is a how to remove the #4 gear and starter clip, I found the threads on how the tighten the clip and test it, to 6lb. I removed the rh cover and the kickstarter shaft started...

I just came across AMSOIL Break-In Oil SAE 30 in a magazine article (Hot Bike) http://www.amsoil.com/shop/by-product/motor-oil/racing/break-in-oil-(sae-30)/?code=BRKQT-EA It is said to have high zinc content. Is this worthwhile to get for a new built XS engine?

got a question , do all stock xs bikes have the same power? they seem to have 37.5 kw , but do they all have that?

Hi! I am having some trouble starting my '81 650 and was hoping you guys could give me some suggestions of things to try! A bit of background: - I bought the bike second hand about 2 years ago, and it has pretty much sit in my garage since then. No changes made. - The previous owner had...

have put a brand new hughs oil cooler /filter on new rebuilt motor.now run in with 600kls ,leaks oil from around filter when motors hot , still the same after 500 mile oil and filter change.. leaking badly from top area of cooler/filter once motor warmed up..any ideas

Anyone off the top of their head know how many cam rotations there are in order to get 1 complete crank rotation? The engine in question is rephased, with a pamco ignition, i'm trying to make a digital speedometer using the pamcos 12 to 6v signal when it sparks. I've got the micro controller to...

Hi, I'm curious on whether anyone has used a bolt-on drive chain tensioner with a stock frame configuration. The MonsterCraftman site has a number of good looking tensioners but most look appropriate only for choppers. I'd like to see a skate board type of tensioner that would bolt to the...

Hey guys, I'm new to this forum, and honestly to motorcycle maintenance in general. I recently bought a 79 xs650s, and I couldn't be happier except that it won't start currently. I know it started kind of recently and the owner before me said it had a slight oil leak. I checked the spark plugs...

So I was replacing my tach drive gasket and O-ring and everything went smooth. The last bolt I put on was #5 on the diagram below. Anyway the bolt shaft snapped off from the head so I bought a new one was went to back it out with a drill (something I've had to do dozens of times). Long story...

Seen this vid on a vintage Doo site i'm on. It may come in handy for those building many motors.