There's no stupid questions, just stupid people. ....help.
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- Posts: 193
- Joined: April 21st, 2008, 9:44 pm
Have you ever tried wide open kill button depressed engine braking. Works pretty darn good. Another reason that its hard to squeak going down hill is your not generating much heat to break down the oil. Skiddy had a great question that no one answered I'm interested in everybodies opinion. The lean burn on the DT250 with no spark?
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- Joined: June 23rd, 2007, 12:47 pm
- Location: Prescott
- dannygraves
- Posts: 8020
- Joined: June 1st, 2007, 2:03 pm
- Location: Las Vegas, NV
thats easy, it got so lean that something protruding in the combustion chamber (probably the plug tip) got hot enough to ignite. That why you don't run a head with damage on the surface becaus little chunks poking out can get nice and hot and ignite the fuel before your spark occurs.quantum500 wrote:Have you ever tried wide open kill button depressed engine braking. Works pretty darn good. Another reason that its hard to squeak going down hill is your not generating much heat to break down the oil. Skiddy had a great question that no one answered I'm interested in everybodies opinion. The lean burn on the DT250 with no spark?
'09 kx450f 4-Poke
Gen-4 trail bike --SOLD--
Gen-3 badass trail/mx bike --SOLD--
Gen-1 built dunes bike --SOLD--
'05 klx110 --SOLD--
'95 pw80
Gen-4 trail bike --SOLD--
Gen-3 badass trail/mx bike --SOLD--
Gen-1 built dunes bike --SOLD--
'05 klx110 --SOLD--
'95 pw80
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- Joined: April 21st, 2008, 9:44 pm
- britincali
- Posts: 8207
- Joined: May 31st, 2007, 7:10 pm
- Location: Barstow, CA
Lean = hot and in most cases hot = power, they just dont last long running like that
I had a YZ490 that would rev its balls off when it ran out of gas, the plug would start glowing so the kill switch was useless the only way to stop it was jam the back brake and slam it in second.
I had a YZ490 that would rev its balls off when it ran out of gas, the plug would start glowing so the kill switch was useless the only way to stop it was jam the back brake and slam it in second.
Coolness list by 90cr500guy
Bob's = 50/50
Cepek = cool
Solidbro = cool
Brit = loser
Stoffer = 1 up from Brit
MFDB = cool
Danny = ok
Bob's = 50/50
Cepek = cool
Solidbro = cool
Brit = loser
Stoffer = 1 up from Brit
MFDB = cool
Danny = ok
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- Posts: 193
- Joined: April 21st, 2008, 9:44 pm
- dannygraves
- Posts: 8020
- Joined: June 1st, 2007, 2:03 pm
- Location: Las Vegas, NV
yes, but aluminum WILL melt! I've seen pistons with holes or even the exhaust side ring lands melted off they always say it ran awesome right before that happened
if we could use metals that can resiste higher temps and account for additional heat expansion, it would be a possibility, but then you'll melt exhaust, burn gaskets..... ya, probably not gonna happen. Stoich for gasoline is 14.7:1 if I remember correctly. if you run a motor under load WFO at 14.7:1 you'll start melting shit, especially a 2 stroke or forced induction application.
if we could use metals that can resiste higher temps and account for additional heat expansion, it would be a possibility, but then you'll melt exhaust, burn gaskets..... ya, probably not gonna happen. Stoich for gasoline is 14.7:1 if I remember correctly. if you run a motor under load WFO at 14.7:1 you'll start melting shit, especially a 2 stroke or forced induction application.
'09 kx450f 4-Poke
Gen-4 trail bike --SOLD--
Gen-3 badass trail/mx bike --SOLD--
Gen-1 built dunes bike --SOLD--
'05 klx110 --SOLD--
'95 pw80
Gen-4 trail bike --SOLD--
Gen-3 badass trail/mx bike --SOLD--
Gen-1 built dunes bike --SOLD--
'05 klx110 --SOLD--
'95 pw80
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- Posts: 193
- Joined: April 21st, 2008, 9:44 pm
I asked the "Old Salt" mechanic who's put a zillion miles on bikes that should have been crushed years ago (he showed me a clapped out BSA with over 200K on it that he rides to work daily!! And from the looks of it...never washed once.)
SO, back to my point....he also stated there is somethnig glowing in my combustion chamber and that what I experienced is REALLY bad. Temps skyrocket and if let to continue mass hysteria will ensue. It happened to me again today but I caught it fast enough.
Since we are talking about my questions that were never answered......
why does the bike fire every 5 seconds or so on decel with a solid DING and subsequent accelleration. $-strokes don't do that.
So why huh, huh, huh...why?
BRAAAAAAAP ! ! ! Going riding (or diving) tomorrow!!
"Skiddy"
SO, back to my point....he also stated there is somethnig glowing in my combustion chamber and that what I experienced is REALLY bad. Temps skyrocket and if let to continue mass hysteria will ensue. It happened to me again today but I caught it fast enough.
Since we are talking about my questions that were never answered......
why does the bike fire every 5 seconds or so on decel with a solid DING and subsequent accelleration. $-strokes don't do that.
So why huh, huh, huh...why?
BRAAAAAAAP ! ! ! Going riding (or diving) tomorrow!!
"Skiddy"
I'd rather be riding right now!!!
1982 CBX six, 04 XB12S Lightning, 91 XR100R, 03 Yosh DRZ450S, 74 DT250A, 80 CR125R, 79 Husky CR390, 02 RM250, 07 LTZ90, 75 914 2.0, 08 Tundra5.74x4
1982 CBX six, 04 XB12S Lightning, 91 XR100R, 03 Yosh DRZ450S, 74 DT250A, 80 CR125R, 79 Husky CR390, 02 RM250, 07 LTZ90, 75 914 2.0, 08 Tundra5.74x4