Gray exhaust tips!, Why would I have Gray exhaust tips? |
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Gray exhaust tips!, Why would I have Gray exhaust tips? |
wes |
Nov 7 2019, 05:41 PM
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#1
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wes Group: Members Posts: 1,588 Joined: 8-December 07 From: Ukiah Ca Member No.: 8,436 Region Association: Northern California |
So my carbs have been running a bit rich since I installed the new airbox but wanted to try something with the airbox before readjustment of the carbs as I believe it’s starving the airflow a bit. I’ve been running on the Costco premium unleaded. We went to the track and I topped off my gas tank from 1/4 tank of the premium unleaded to 163 octane leaded track gasoline. I knew she was running rich due to the slight black exhaust tip but after adding the track gasoline the the tips are a distinctive gray.
Did I screw up with the track gasoline or? My engine is a 2.4 stroker 4 cylinder and runs well with about 2,000 miles since the build. |
sixnotfour |
Nov 7 2019, 06:27 PM
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#2
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914 Wizard Group: Members Posts: 10,392 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains |
led baby, your guides are extra happy
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wes |
Nov 7 2019, 07:48 PM
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#3
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wes Group: Members Posts: 1,588 Joined: 8-December 07 From: Ukiah Ca Member No.: 8,436 Region Association: Northern California |
I know the lead is good for our engines the but the unleaded premium mixed with 163 leaded octane and my now Grey exhaust tips was what I was wondering about.
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sithot |
Nov 8 2019, 05:29 AM
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#4
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Member Group: Members Posts: 446 Joined: 25-October 06 From: Virginia Member No.: 7,090 Region Association: None |
I know the lead is good for our engines the but the unleaded premium mixed with 163 leaded octane and my now Grey exhaust tips was what I was wondering about. Most would wish for tail pipes to look like those. I run race fuel in a few bikes and it's the only time I get a non-sooty exhaust. |
JeffBowlsby |
Nov 8 2019, 10:14 AM
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#5
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914 Wiring Harnesses Group: Members Posts: 8,439 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
Original plates to the car and what year is it?
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markhoward |
Nov 8 2019, 10:24 AM
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#6
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Member Group: Members Posts: 374 Joined: 5-March 17 From: Lafayette, CA Member No.: 20,897 Region Association: Northern California |
oh yea!
Attached thumbnail(s) |
wes |
Nov 8 2019, 12:42 PM
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#7
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wes Group: Members Posts: 1,588 Joined: 8-December 07 From: Ukiah Ca Member No.: 8,436 Region Association: Northern California |
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wes |
Nov 8 2019, 12:45 PM
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#8
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wes Group: Members Posts: 1,588 Joined: 8-December 07 From: Ukiah Ca Member No.: 8,436 Region Association: Northern California |
So sounds like gray is good!
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burton73 |
Nov 8 2019, 02:02 PM
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#9
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burton73 Group: Members Posts: 3,462 Joined: 2-January 07 From: Los Angeles Member No.: 7,414 Region Association: Southern California |
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wes |
Nov 8 2019, 02:12 PM
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#10
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wes Group: Members Posts: 1,588 Joined: 8-December 07 From: Ukiah Ca Member No.: 8,436 Region Association: Northern California |
What I’m wondering is she was rich with Costco premium but gray with 163 leaded, is that showing the lack of quality in the Costco premium or just how much better the engine Preformance is with higher octane leaded?
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johnhora |
Nov 8 2019, 06:47 PM
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#11
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Senior Member Group: Members Posts: 864 Joined: 7-January 03 From: Derby City KY Member No.: 107 Region Association: None |
wes...
grey is from the leaded race fuel..your 2.4 hp engine should love the 163 race fuel you didn't do any thing wrong to the engine by using this. if you start using the Costco premium unleaded again the tips will turn black again and that does mean it is running rich. Also it has alcohol in it. The race fuel does not have alcohol unless you are running a dragster.,.(IMG:style_emoticons/default/smile.gif) pull the plugs and take a look for running rich...better yet find some one with a wideband o2 sensor meter |
wes |
Nov 8 2019, 08:43 PM
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#12
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wes Group: Members Posts: 1,588 Joined: 8-December 07 From: Ukiah Ca Member No.: 8,436 Region Association: Northern California |
wes... grey is from the leaded race fuel..your 2.4 hp engine should love the 163 race fuel you didn't do any thing wrong to the engine by using this. if you start using the Costco premium unleaded again the tips will turn black again and that does mean it is running rich. Also it has alcohol in it. The race fuel does not have alcohol unless you are running a dragster.,.(IMG:style_emoticons/default/smile.gif) pull the plugs and take a look for running rich...better yet find some one with a wideband o2 sensor meter Thanks that’s what I wanted to hear. |
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