Keeping your XR cool By Al Baker's XRs Only
xrs...@mscomm.com
Ways to deal with the excessive heat generated by the Honda XR’s series.
This write up is on how to get your XR series Honda to run cooler.
Heat is a by-product of combustion. Most of this heat is concentrated
in the cylinder head area. There are several schools of thought on what to do
with this heat. Some feel the answer is an oil cooler. Of course, any way you
can cool the oil of a “Hi performance” engine will help its durability but in
this instance you would be solving the symptom and not addressing the cause.
Using the oil as the sole source to reduce the cylinder temp is not the most
efficient way. The oil has to flow over the head, pick up the heat, flow
through the engine (passing some of the heat it picked up to the lower parts
of the engine), flow to the oil cooler and finally dissipate the heat.
The best way to disapate this heat is through the cooling fins. In this way
the heat does not have to be transferred to the oil, through the engine, to
the oil cooler and then passed to the air.
At Al Baker’s XR’s Only we weld (12) extensions of “high grade 6061
Aluminum” on the cylinder head fins. By doing this, we increase the cylinder
head fin surface area by at least 55% and improve the dissipation of this
heat. Now the heat goes from the cylinder head, to the cooling fins and is
dissipated to the air, not to the lower parts of the engine.
If you have any questions on our “Big Fin Heads” please feel free to
email me (Robert) at the email address below. Make sure that you let us know
that you are referring to the posting on the web to get the “WEB BUYERS
GIFT”. All of our web customers will receive a special gift with a purchase.
Thank You
Robert
Al Baker’s XR’s Only
xrs...@mscomm.com
-----== Posted via Deja News, The Leader in Internet Discussion ==-----
http://www.dejanews.com/ Now offering spam-free web-based newsreading
Mike E
This mod rocks.......
I had it done with a very short turnaround time and the quality was exceptional,
combined with an oil cooler I dropped nearly 30 degree's.
You can see a picture of the conversion at:
http://members.aol.com/xr650rr
MikeE
TMaxel
>You can see a picture of the conversion at:
>http://members.aol.com/xr650rr
>
>MikeE
>
DAMN IT MIKE! I fell for it again! As soon as the page painted with your
SUPERMOTARD XR I srpung a... Well... I LOVE THAT BIKE!
TMaxel
RM 250, #53, Me *** Special thanks to Jeff @ MX South!
M...@pipeline.com
RM 80, #44, Tommy *** Cycle Emporium
KX 60 & RM 80, #35, Tyler *** And thanks to SKAT Racing!!!
1-800-624-7528
djo...@cyberhighway.nospam.net
On 14 May 1998 13:14:45 GMT, tma...@aol.com (TMaxel) wrote:
>In article <355A1552...@aol.com>, Mike E <quic...@aol.com> writes:
>
>>You can see a picture of the conversion at:
>>http://members.aol.com/xr650rr
>>
>>MikeE
>>
>
>DAMN IT MIKE! I fell for it again! As soon as the page painted with your
>SUPERMOTARD XR I srpung a... Well... I LOVE THAT BIKE!
>
>
>TMaxel
Do we have a closet Thumper fan here?
DJ
Email: djo...@cyberhighway.net
RMD List Page - Now with Loads-O-Links:
http://www.cyberhighway.net/~djones/
ZZSteve
Why do some race engines wrap the header pipe with insulation tape?
ZZSteve WR400F
xrs...@mscomm.com wrote in message <6jclsv$n38$1...@nnrp1.dejanews.com>...
HOSEHEAD
xrs...@mscomm.com wrote:
>
> Ways to deal with the excessive heat generated by the Honda
> XR’sseries.
an alternative....get a water-cooled bike...we have the technology.
Victor Johnson
HOSEHEAD (UNSPAM...@nospam.zk3.dec.com) wrote:
Nah, just another point of failure. Air cooled is more reliable ...
Good ridin' to ya,
Victor Johnson
-----------------------------------------------------------------------
| '75 Goldwing "Big air. Kids today, that's all they want, big air. |
| '89 Hawk GT I say keep it on the dirt, that's where the fun is. |
| '98 XR400R You want big air kid? Pull my finger." |
| Webola: http://www.vlj.com - Smooth Johnson (master of the berm) |
-----------------------------------------------------------------------
TMaxel
>
>Why do some race engines wrap the header pipe with insulation tape?
>
My guess...
I understand that header wrap is for keeping the engine compartment temps down,
like too keep it cooler under the hood. Has to do with the starter, alt.,
etc...
I dont think wraping a bike's exhaust would do you any good... EXCEPT... To
possible keep you from getting burnt.
OK... There is my GUESS.
TMaxel
In article <355bf3d5...@news.cyberhighway.net>,
djo...@cyberhighway.nospam.net writes:
>
>Do we have a closet Thumper fan here?
>
>
Nah... I mean, I would love to have a bike to tootle back and forth to work...
But, the SuperMotard XR is just a sweet looking bike!
High Lord Gomer
On Wed, 13 May 1998 17:39:43 GMT, xrs...@mscomm.com wrote:
<snip>
>Robert
>Al Baker"s XR"s Only
>xrs...@mscomm.com
>
>-----== Posted via Deja News, The Leader in Internet Discussion ==-----
>http://www.dejanews.com/ Now offering spam-free web-based newsreading
Anyone else wonder why, since Deja News offers spam-free web-based
newsreading, that this post didn't delete itself?
Relax, Robert...it is on-topic and I don't find it offensive, just
ironic.
94 KTM 620EXC (Gomer)
96 KX80 (Danny)
97 KX60 (Ricky)
96 50SXR (Ricky)
Thanks to: KORE SportCycles 888-394-KORE, the Carolinas' newest KTM dealer
David L. Lowe Jr.
TMaxel wrote:
>
> In article <6jf3p5$a89$1...@gte1.gte.net>, "ZZSteve" <spe...@konaboy.com> writes:
>
> >
> >Why do some race engines wrap the header pipe with insulation tape?
> >
>
> My guess...
>
> I understand that header wrap is for keeping the engine compartment temps down,
> like too keep it cooler under the hood. Has to do with the starter, alt.,
> etc...
>
> I dont think wraping a bike's exhaust would do you any good... EXCEPT... To
> possible keep you from getting burnt.
>
> OK... There is my GUESS.
>
> RM 250, #53, Me *** Special thanks to Jeff @ MX South!
> M...@pipeline.com
> RM 80, #44, Tommy *** Cycle Emporium
> KX 60 & RM 80, #35, Tyler *** And thanks to SKAT Racing!!!
> 1-800-624-7528
It also keeps the heat from the exhaust from the engine, at least it
seems to help on little XRs. The exhaust pipe on mine gets way hotter
than the part of the engine it is so close to.
Aloha, Tex
James Ray Crenshaw
>> >Why do some race engines wrap the header pipe with insulation tape?
This also keeps the temperature of the exhaust gases hotter so that they
flow faster. In doing so, it effectively shortens the pipe.
It would also keep lots of heat off the front of the engine; important if
the engine already runs near its thermal limits... IE: Big air-cooled
thumper. It wouldn't surprise me at all to find that wrapping the exhaust on
an XR-650 would lower the oil temperature more than an oil-cooler would.
Ray Crenshaw in SC
OldFart
I know I tried some on a race car I used to run. I was having extreme
overheating problems. I had gone to a special 4 core radiator, louvered the
crap outta my hood, and so on and so forth.
The claim was that this stuff kept the heat in the headers where it belonged.
It did work. My overheating problem pretty much went away. And the exhaust
coming out of the tailpipe was impressively hot.
OldFart
www.off-road.com/dirtbike/ofcol0598.html
www.off-road.com/~oldfart