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?Waldo?
Samba Member
Joined: February 22, 2006
Posts: 10097
Location: Where?
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 Posted: Sun Mar 11, 2018 8:37 pm Post subject: Re: I'm stumped, throttle response issue. |
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| Wildthings wrote: |
| 10c method is five degrees too far retarded when used on a 1.9L. I would recommending setting your timing at 28° BTDC @3800+ rpm, hoses off and plugged. This should give you about 5 more degrees than you are running now. |
That doesn't make sense. 10c recommends 40° BTDC. You're recommending 28° BTDC. 28° BTDC is 12° more retarded than 40° BTDC.
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I am a high-functioning autistic into VW diesels and Vanagons along with other things that are unrelated to this site. |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 52564
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| Posted: Sun Mar 11, 2018 9:19 pm Post subject: Re: I'm stumped, throttle response issue. |
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| ?Waldo? wrote: |
| Wildthings wrote: |
| 10c method is five degrees too far retarded when used on a 1.9L. I would recommending setting your timing at 28° BTDC @3800+ rpm, hoses off and plugged. This should give you about 5 more degrees than you are running now. |
That doesn't make sense. 10c recommends 40° BTDC. You're recommending 28° BTDC. 28° BTDC is 12° more retarded than 40° BTDC. |
10c is recommending a range of
| Quote: |
| 33-41 degrees total advance for the 1.9 wbx, i.e. "mid-high 30's total advance". |
which would give a mid range of 37°. He is missing the initial timing of 5° BTDC [5°ATDC -(-10°retard)].
My method gives a timing of 5° + 23° + 14° = 42° using the mid range for all data, but I firmly believe it is best to set the timing with the vacuum hoses disconnected as the vacuum can is often leaky or out of spec, so setting the timing at 28° BTDC @3800 rpm with the hoses removed and plugged is best and is 5° more than 10c is recommending. |
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Johnathontamayo
Samba Member
Joined: October 14, 2017
Posts: 14
Location: Houston, TX
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| Posted: Sun Mar 11, 2018 9:21 pm Post subject: Re: I'm stumped, throttle response issue. |
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| I will give your method a shot this week Wildthings. Thanks! |
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?Waldo?
Samba Member
Joined: February 22, 2006
Posts: 10097
Location: Where?
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| Posted: Sun Mar 11, 2018 9:35 pm Post subject: Re: I'm stumped, throttle response issue. |
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| Wildthings wrote: |
| My method gives a timing of 5° + 23° + 14° = 42° using the mid range for all data, but I firmly believe it is best to set the timing with the vacuum hoses disconnected as the vacuum can is often leaky or out of spec, so setting the timing at 28° BTDC @3800 rpm with the hoses removed and plugged is best and is 5° more than 10c is recommending. |
I see what you're saying. Thanks for the explanation.
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erikgundy98
Samba Member
Joined: September 06, 2009
Posts: 303
Location: Vancouver WA
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| Posted: Sun May 06, 2018 8:02 pm Post subject: Re: I'm stumped, throttle response issue. |
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What was your result? Any luck?
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