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Old 07-04-2008, 08:18 PM   #14971
TheCowboy
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Location: The frozen tundra - Minny Sota
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Motor Oils

Quote:
Originally Posted by doc_ricketts
There seems to a whole lot of confusion about modern motor oils. The best current synthetic oils are made from purely non-crude or highly processed crude derived complex olefins and esters which have much better shear and temperature breakdown characteristic than petroleum derived chain molecules. And multi weight construction of these oils is done by combining the molecules to provide the right viscosity at the widest temperature range. I personally use Amsoil full synthetic in my DR650 and in my diesel Dodge pickup and have had great success in both applications. Here is a section from Wiki on synthetic oils:
Synthetic Base Stocks

Synthetic motor oils have been made from the following classes of lubricants:
  • Polyalphaolefin (PAO) = American Petroleum Institute (API) Group IV base oil
  • Synthetic esters, etc = API Group V base oils (non-PAO synthetics, including diesters, polyolesters, alklylated napthlenes, alkyklated benzenes, etc.)
  • Hydrocracked/Hydroisomerized = API Group III base oils. Chevron, Shell, and other petrochemical companies developed processes involving catalytic conversion of feed stocks under pressure in the presence of hydrogen into high quality mineral lubricating oil. In 2005 production of GTL (Gas-to-liquid) Group III base stocks began. The best of these perform much like polyalphaolefin[citation needed]. Group III base stocks are considered synthetic motor oil in North America[1], but not in the European Union.
[edit] Advantages

The technical advantages of synthetic motor oils include:
  • Measurably better low and high temperature viscosity performance[citation needed]
  • Better chemical & shear stability
  • Decreased evaporative loss[citation needed]
  • Resistance to oxidation, thermal breakdown and oil sludge problems
  • Extended drain intervals with the environmental benefit of less oil waste.[citation needed]
  • Improved fuel economy in certain engine configurations.[citation needed]
  • Better lubrication on cold starts
WOW, I am confused now!

Cowboy2
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Old 07-04-2008, 08:38 PM   #14972
Rusty Rocket
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Quote:
Originally Posted by Cowboy2
WOW, I am confused now!

Cowboy2
I just use Spectro-4 10w-40 It's worked for the last 30 years.
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Old 07-05-2008, 06:18 AM   #14973
EdM
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Horsepower

Sorry I'm late with this response:

In a test in the October 2007 issue of "Motorcycle Consumer News" they reported RWHP as 35.6 and torque as 33.3 lb/ft.

Ned
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Old 07-05-2008, 06:20 AM   #14974
EdM
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Sorry; I'm late with this response:

In a test in their October 2007 issue "Motorcycle Consumer News" reported RWHP as 35.6 and torgue as 33.3 lb/ft.

Ned
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Old 07-05-2008, 06:21 AM   #14975
EdM
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O.K.: now I'm sorry for the double post.

Did not think the first had gone through.

Ned
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Old 07-05-2008, 08:49 AM   #14976
Rusty Rocket
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35.6 is respectable. Is that stock carb, airbox & pipe? (almost as much as my 250)
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on one side the sign it said "Private Road", but on the other side it didn't say nothin'
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..1972 Penton Six-Days ..1971 Suzuki TS185.. 2005 KTM 400exc
Member of: AMA, NETRA, Blue Ribbon Coalition, CCCofVT, Berkshire TR, CT Ramblers
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Old 07-05-2008, 11:49 AM   #14977
shotglass
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Packed and ready to go

Packed and ready to go but I am leaving at 0500 tomorrow. Leaving Sacramento, Calif going along the coast thru Oregon and Washington then to Victoria Island BC, down to Mt. Rainier to Mt. St Helens to the Hood River back over to the Coast and then home. Over 2500 Miles in 12 days, not to mention some side trips!!!! Hope to meet some ADV riders along the way.
Chris

2008 DR650
IMS tank clear
Gel Seat with sheepskin and beads if necessary
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heated gel grips
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Acerbis front fender
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skid plate and case savers
ebay BBQ rack
ebay side racks with Rally Pro saddle bags
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Old 07-05-2008, 12:14 PM   #14978
EdM
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Rusty Rocket:

That was in a test involving four DS motorcycles and there was no mention of any modifications so I do believe that is in stock form.

Ned
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Old 07-05-2008, 02:37 PM   #14979
Porky
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Quote:
Originally Posted by EdM

In a test in their October 2007 issue "Motorcycle Consumer News" reported RWHP as 35.6 and torgue as 33.3 lb/ft.

Ned
Are those figures for the DR650 or 96" Harleys?
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Old 07-05-2008, 06:29 PM   #14980
bumpathump
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Chris -

Have a great ride. Avoid smoke. Take pictures. Let us know how it went.

Rick - Davis, CA
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Old 07-05-2008, 09:08 PM   #14981
NordieBoy
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Quote:
Originally Posted by Rusty Rocket
35.6 is respectable. Is that stock carb, airbox & pipe? (almost as much as my 250)
35HP stock.
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Old 07-06-2008, 09:10 AM   #14982
LukasM
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Quote:
Originally Posted by Rusty Rocket
35.6 is respectable. Is that stock carb, airbox & pipe? (almost as much as my 250)
MxRob on Thumpertalk got about 40HP with a Keihin, GSXR pipe and airbox mod IIRC.

Another guy from Sweden got 48RWHP with a pipe, header, ported head, high compression piston, airbox mod, webcam, ...?
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Old 07-06-2008, 09:59 AM   #14983
eldavo
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Don't forget to take only with pinch of salt.

We have two local dyno tuners who have given figures 20% apart for the same bikes for a couple known riders who were on both due to tuning at one and dyno day the other.

Before/After charts are much nicer to take with lots of salt. And vinegar... mmm

Quote:
Originally Posted by LukasM
MxRob on Thumpertalk got about 40HP with a Keihin, GSXR pipe and airbox mod IIRC.

Another guy from Sweden got 48RWHP with a pipe, header, ported head, high compression piston, airbox mod, webcam, ...?
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Old 07-06-2008, 04:07 PM   #14984
NordieBoy
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Quote:
Originally Posted by LukasM
Another guy from Sweden got 48RWHP with a pipe, header, ported head, high compression piston, airbox mod, webcam, ...?
I've got a spare webcam I can use but I can't find a USB port on my bike at all :(
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Old 07-06-2008, 04:09 PM   #14985
NordieBoy
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Quote:
Originally Posted by eldavo
Don't forget to take only with pinch of salt.

We have two local dyno tuners who have given figures 20% apart for the same bikes for a couple known riders who were on both due to tuning at one and dyno day the other.

Before/After charts are much nicer to take with lots of salt. And vinegar... mmm
That's why I go to the same dyno.
Variance minimisation.
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