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Baja Forums -:- VW Volkswagen Bug, Baja, Bus, Sandrail and Thing -:- VW Volkswagen & Baja Bug General Discussion -:- tuning recommendations help!
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tuning recommendations help!
Bug, Baja, Thing and Buggies. Most every thing that will not fit any any other area. See list of other Forums for better topic placement...Volkswagen General Discussion
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Neander
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Post Post subject: tuning recommendations help!
Posted: Wed Oct 28, 2009 02:33 AM
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hey so ive got a 1641cc that needs a good tuning. the specs are: 1641cc, 31pict carb, single port, carb main jet .5 larger, engle w100 cam. rite now i have the timing at 30 degrees. the engine stumbles on acceleration and it just now backfired when i punched the gas a little while i was driving. i was wondering what i should set the timing, valve gap, and point gap to. thx!

Nander out

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vwbill
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Post Post subject: Re: tuning recommendations help!
Posted: Wed Oct 28, 2009 02:52 AM
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I also have a W100 cam. Card says all valves should gap at 0.004"

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Neander
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Post Post subject: tuning recommendations help!
Posted: Wed Oct 28, 2009 02:55 AM
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cool thx thats a start. yea i didnt install the cam so i dnt have the card or know anything about it.

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Neander
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Post Post subject: tuning recommendations help!
Posted: Wed Oct 28, 2009 02:56 AM
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whats your timing at?

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kyle_pc_75
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Post Post subject: Re: tuning recommendations help!
Posted: Wed Oct 28, 2009 04:44 AM
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Neander wrote:
whats your timing at?

What distributor? Probably 28-30 at max advance is good.

Kyle


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Neander
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Post Post subject: tuning recommendations help!
Posted: Wed Oct 28, 2009 06:21 AM
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ive got a 009 dizzy. yea my timings at 30 last time i checked

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BugZyla.com
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Post Post subject: Re: tuning recommendations help!
Posted: Wed Oct 28, 2009 02:39 PM
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Check out this tech tip. It works I have done it. Sometimes it doesnt remove the hesitation all the way but it will help.

www.airsupplyvw.co.uk/...th009.html


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perrib
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perrib

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Post Post subject: Re: tuning recommendations help!
Posted: Wed Oct 28, 2009 07:43 PM
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Find a good used later model vaccum/ mechanical advance distributor you get better acceleration, better fuel mileage and it will retard under a load.
The .002 difference in valve lash won't matter.
Points adjusted correctly and tight distributor shaft?
Is you pre heat functional?
Is the acc. dump tube in place and adjusted?
Does the acc pump squirt fuel as soon as the throttle is cracked and keep spraying.

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Neander
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Post Post subject: tuning recommendations help!
Posted: Thu Oct 29, 2009 07:58 PM
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i will check my points. what should they be at? my pre heat tube is disconnected because of my tri-mil exhaust. the acc.pump could also be a bigger factor with this im sure it needs adjustment.

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perrib
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Post Post subject: Re: tuning recommendations help!
Posted: Thu Oct 29, 2009 08:21 PM
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.015" for the point gap. You need to add the preheat to the Trimill. Trying to tune it at any temp under 100 degrees outside without preheat is a waste of time. The heat keeps the fuel atomized as it travels through the long intake runners. Once it gets cool outside the intake will ice up.

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Neander
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Post Post subject: tuning recommendations help!
Posted: Thu Oct 29, 2009 09:08 PM
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yea i noticed that wen i drive it at nite when its cold outside it runs like sh**

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