how often should i rebuild my engine? is there a certain mileage i should go by?
You should rebuild your engine only when you need to. If you aren't doing anything terrible like letting it run out of oil or floating valves, I don't know that you'd ever need to rebuild your engine... There are people on the board who have driven well over 100k miles without rebuilding. As far as I know only airplane mechanics ever rebuild engines according to some kind of schedule instead of just waiting for things to go out of spec...
well i am an aircraft mechanic so thats why i ask. im also more use to working on cars than to motorcycles. this is my first one. it only has about 36k on it. never rode hard and always has oil. thanks for the input
I rebuild mine every weekend ... Its OK, I am a software engineer on TV and I stayed in holiday in last night, besides my uncle knows the manager of the store twice removed ...
Gaaaa ... I got 48K off the 89, but it was begging for it the last 8-10K. It used a qt in 300 miles towards the end and it was ridden averagely hard.
Cool.
Buddha.
Quote from: fred on October 29, 2008, 04:12:11 PM
You should rebuild your engine only when you need to. If you aren't doing anything terrible like letting it run out of oil or floating valves, I don't know that you'd ever need to rebuild your engine... There are people on the board who have driven well over 100k miles without rebuilding. As far as I know only airplane mechanics ever rebuild engines according to some kind of schedule instead of just waiting for things to go out of spec...
Sometimes...
Other times, we wait until the pilot complains that it doesn't have enough power to get off the ground. :laugh:
Birds, there's no TBO on a motorcycle engine. Run it till it won't go. On the GS, you'll run out of valve seat long before the bottom end is toasted, so long as it is properly maintained. GSJack suggests about 80,000 miles is average for the top end. Rebore, re-seat, and go another 80k.
You'll be able to watch and plot the valve seat wear trend every time you check the valves. Once you run out of shims, it is possible to grind the valve tip to gain a little more clearance.
Keep oil in it and follow the maintenance checklist in the Clymer's manual. Remember, the GS likes to use oil and needs loose valves just like any air-cooled recip engine. :thumb:
thats good i still have a bit to go then. yeah i work with jet aircraft. do you the differance between a fighter pilot and a jet engine? the egine stops whinning after stut down.
Quote from: birdsGS on October 29, 2008, 05:59:19 PM
thats good i still have a bit to go then. yeah i work with jet aircraft. do you the differance between a fighter pilot and a jet engine? the egine stops whinning after stut down.
:laugh:
What do you call a helicopter?
10,000 parts flying in loose formation around an oil leak. ;)
Do you know the purpose of the propeller on an airplane?
To keep the pilot cool....
need proof, wait till it stops and watch him sweat
Quote from: GeeP on October 29, 2008, 06:26:59 PM
Quote from: birdsGS on October 29, 2008, 05:59:19 PM
thats good i still have a bit to go then. yeah i work with jet aircraft. do you the differance between a fighter pilot and a jet engine? the egine stops whinning after stut down.
:laugh:
What do you call a helicopter?
10,000 parts flying in loose formation around an oil leak. ;)
Nice! I like that one. When I was flying planes I always felt comforted by the 10:1 glide ratio.... Helicopters always seemed way more scary.
Quote from: fred on October 29, 2008, 08:59:36 PM
Quote from: GeeP on October 29, 2008, 06:26:59 PM
Quote from: birdsGS on October 29, 2008, 05:59:19 PM
thats good i still have a bit to go then. yeah i work with jet aircraft. do you the differance between a fighter pilot and a jet engine? the egine stops whinning after stut down.
:laugh:
What do you call a helicopter?
10,000 parts flying in loose formation around an oil leak. ;)
Nice! I like that one. When I was flying planes I always felt comforted by the 10:1 glide ratio.... Helicopters always seemed way more scary.
I Used to Fly Helicopters as a CFI at a Flight School. I've flown both fixed and rotary and i can tell Helicopters are alot less forgiving.
In a Cessna you can set the trim and kick back while fllying. In helicopter your hands must remain on the Cyclic which controls the pitch & the Collective increases altitude or decreases it
Speaking of Glide Ratio i remember the 1st time I did a Auto rotation with my instructor when i was a student :laugh: 1st time i was introduced to it was scary!!!!
We were flying around the middle of July, with the doors off considering its get very hot inside the cockpit with small vents. We get to the practice area and my instructor says " I think were losing engine power!!!! i'm rolling off the thorttle." So here i was sitting in the right seat scared to death. As the ground was approaching very fast!!!. we were decending like 900 FPM!!
Then i kept looking at the ground beneath me, thinking i'm gunna die :o last second he flares the nose up and the skids touch down. And my instructor has a huge grin on his face :laugh:
Quote from: im your legacy on October 30, 2008, 12:09:15 AM
Quote from: fred on October 29, 2008, 08:59:36 PM
Quote from: GeeP on October 29, 2008, 06:26:59 PM
Quote from: birdsGS on October 29, 2008, 05:59:19 PM
thats good i still have a bit to go then. yeah i work with jet aircraft. do you the differance between a fighter pilot and a jet engine? the egine stops whinning after stut down.
:laugh:
What do you call a helicopter?
10,000 parts flying in loose formation around an oil leak. ;)
Nice! I like that one. When I was flying planes I always felt comforted by the 10:1 glide ratio.... Helicopters always seemed way more scary.
I Used to Fly Helicopters as a CFI at a Flight School. I've flown both fixed and rotary and i can tell Helicopters are alot less forgiving. In a Cessna you can set the trim and kick back while fllying... In helicopter your hands must remain on the Cyclic which controls the pitch & the Collective increases altitude or decreases.
Speaking of Glide Ratio i remember the 1st time I did a Auto rotation with my instructor when i was a student :laugh: 1st time i was introduced to it was scary!!!!
We were flying around July with the doors off considering its get very hot inside the cockpit with small vents. We get to the practice area and my instructor says " I think were losing engine power!!!! i'm rolling off the thorttle." So here i was sitting in the right seat scared to death as the ground was approaching very fast!!!. we were decending like 900 FPM!!
Then i kept looking at the ground beneath me thinking i'm gunna die :o last second he flares the nose up and the skids touch down. And my instructor has a huge grin on his face :laugh:
Yeah, that sounds terrifying. I actually like doing power off drills in a Cesna. Coming down at 500 FPM with almost no engine noise is nice...
I loved doing stall training in a Cessna 172. Instructor would start climbing to around 4,000 ft AGL then start exceeding the Angle of attack on the wings and you could feel the plane start entering a stall. You start feeling that infamous shaking saying its time to pitch that nose down again. then nose it over and start hauling ass straight down :icon_mrgreen:
We were doing this about half mile out over the ocean which we shouldn't have been doing and we managed to spot a fishing boat and started making low passes and harassing them :laugh: rocking the wings and had a blast.
Quote from: birdsGS on October 29, 2008, 03:56:07 PM
how often should i rebuild my engine? is there a certain mileage i should go by?
By the way i've gone through top end rebuild before. I had the notorious GS burning oil syndrome which was blowby.
You should only rebuild the motor if you have the following:
1. Loss of compression lower than normal.
2. Burning oil or a blow by condition where combustion gases sneak past the compression rings & oil rings into the crankcase.
3. Bearing Failure.
4. Incorrectly adjusted valves where the piston reaches Top dead center and slams into the valves. Depending on the condition of your shims.
5. Using higher octane Fuel may cause damage such as detonation, Unless the carbs are adjusted and tuned.
Quote from: im your legacy on October 30, 2008, 12:28:52 AM
I loved doing stall training in a Cessna 172. Instructor would start climbing to around 4,000 ft AGL then start exceeding the Angle of attack on the wings and you could feel the plane start entering a stall. You start feeling that infamous shaking saying its time to pitch that nose down again. then nose it over and start hauling ass straight down :icon_mrgreen:
We were doing this about half mile out over the ocean which we shouldn't have been doing and we managed to spot a fishing boat and started making low passes and harassing them :laugh: rocking the wings and had a blast.
Your CFI is lucky nobody wrote down the tail number and reported him to the FAA, there goes 50k or more of flight training costs plus your airline career. :nono:
5. Using higher octane Fuel may cause damage such as detonation, Unless the carbs are adjusted and tuned.
[/quote]
What? You mean lower octane fuel?
Oh yea ... that was the one part that didn't make sense in his post :cookoo: :cookoo: :dunno_white: :dunno_white:
Cool.
Buddha.
A. Why the hell would you re-build your motor unless it wasn't showing signs of needing serious attention.
B. Just keep everything in-spec and you'll be fine. Valves, cam chain, carbs... no worries.
Dan
Quote from: Danny500 on October 30, 2008, 03:17:33 PM
A. Why the hell would you re-build your motor unless it wasn't showing signs of needing serious attention.
He's an airplane mechanic. It is sufficiently bad when airplane engines fail that they are always rebuilt to a set schedule based on the number of hours they've been in service... Aircraft are the only things like that as far as I know though...
Quote from: fred on October 30, 2008, 03:52:12 PM
Quote from: Danny500 on October 30, 2008, 03:17:33 PM
A. Why the hell would you re-build your motor unless it wasn't showing signs of needing serious attention.
He's an airplane mechanic. It is sufficiently bad when airplane engines fail that they are always rebuilt to a set schedule based on the number of hours they've been in service... Aircraft are the only things like that as far as I know though...
Ahh, well ok then. :cookoo:
Dan