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Glenn Mr. 010
Joined: December 25, 2001 Posts: 76760 Location: Sneaking up behind you
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Posted: Mon Jul 26, 2021 4:52 pm Post subject: Re: Bosch 010 problem. Loose floppy advance mechanism? |
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You might be better off with a 019. The curve comes in sooner and you start with more advance at idle. _________________ Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
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evanfrucht Samba Member
Joined: July 24, 2016 Posts: 2180 Location: Laurel Canyon, CA
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Posted: Mon Jul 26, 2021 5:11 pm Post subject: Re: Bosch 010 problem. Loose floppy advance mechanism? |
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Glenn wrote: |
You might be better off with a 019. The curve comes in sooner and you start with more advance at idle. |
Thank you, I will pass that advice onto the guy. _________________ 1967 Bug ( the daily rod )
1964 Fury Wagon ( the pavement shredder ) |
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tasb The Distributor Distributor
Joined: April 27, 2002 Posts: 6371 Location: Pentwater, Michigan
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Posted: Mon Jul 26, 2021 7:18 pm Post subject: Re: Bosch 010 problem. Loose floppy advance mechanism? |
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Sometimes a flat spot is a normal thing with mechanical advance only distributors that can be tuned out. _________________ Roads Scholar &
1957 Kombi low mileage 36 hp governor equipped M 178 Slow Drag Winner 2014, 2015, 2018
1965 hardtop Deluxe Microbus owned since 1990 M 620 factory 12 v 1500cc
1961 (October)Single Cab- Road Trip Workhorse |
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tasb The Distributor Distributor
Joined: April 27, 2002 Posts: 6371 Location: Pentwater, Michigan
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Posted: Mon Jul 26, 2021 7:19 pm Post subject: Re: Bosch 010 problem. Loose floppy advance mechanism? |
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Sometimes a flat spot is a normal thing with mechanical advance only distributors that can be tuned out. Try cleaning and re lubricating the interior of the distributor. _________________ Roads Scholar &
1957 Kombi low mileage 36 hp governor equipped M 178 Slow Drag Winner 2014, 2015, 2018
1965 hardtop Deluxe Microbus owned since 1990 M 620 factory 12 v 1500cc
1961 (October)Single Cab- Road Trip Workhorse |
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evanfrucht Samba Member
Joined: July 24, 2016 Posts: 2180 Location: Laurel Canyon, CA
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Posted: Mon Jul 26, 2021 8:27 pm Post subject: Re: Bosch 010 problem. Loose floppy advance mechanism? |
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tasb wrote: |
Sometimes a flat spot is a normal thing with mechanical advance only distributors that can be tuned out. |
I did clean and lubricate it very well with proper stuff. I don't think it can be tuned out. I started off and timed full advance (~30) @ 2500 and then took it on a series of test drives, making small adjustments before each... but it does not go away no matter what. I think I have it timed at the sweet spot but there is still a slight flat spot that makes it's hard to ease into first gear.... you can, it just takes more effort and finesse than I would think normal... but then again this is a true bare bones vintage speed deal.
I agree it could need some fine carb tuning tho. _________________ 1967 Bug ( the daily rod )
1964 Fury Wagon ( the pavement shredder )
Last edited by evanfrucht on Mon Jul 26, 2021 8:41 pm; edited 1 time in total |
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Glenn Mr. 010
Joined: December 25, 2001 Posts: 76760 Location: Sneaking up behind you
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Posted: Mon Jul 26, 2021 8:29 pm Post subject: Re: Bosch 010 problem. Loose floppy advance mechanism? |
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By "tuned out" it usually means a carb adjustment like enriching the fuel or a larger jet.
How about some engine specs such as carb(s)? _________________ Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
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evanfrucht Samba Member
Joined: July 24, 2016 Posts: 2180 Location: Laurel Canyon, CA
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Posted: Mon Jul 26, 2021 9:13 pm Post subject: Re: Bosch 010 problem. Loose floppy advance mechanism? |
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Glenn wrote: |
By "tuned out" it usually means a carb adjustment like enriching the fuel or a larger jet.
How about some engine specs such as carb(s)? |
It's an original Okrasa engine with a pair of real Solex 32PBIC's. Pretty neat actually. The carbs do look to have a fair amount of miles on them and/or have been sitting for a while. There is yellow staining on the outside, etc. _________________ 1967 Bug ( the daily rod )
1964 Fury Wagon ( the pavement shredder ) |
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Glenn Mr. 010
Joined: December 25, 2001 Posts: 76760 Location: Sneaking up behind you
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Posted: Tue Jul 27, 2021 3:05 am Post subject: Re: Bosch 010 problem. Loose floppy advance mechanism? |
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I've never heard of a "flat spot" or hesitation on an Okrasa engine with dual carbs and a Bosch 010.
Does it happen when the engine is fully warmed up? I've seen old dried grease between the mainshaft and upper advance cause the advance to stick and then loosen up when the engine heats up. _________________ Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
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EVfun Samba Member
Joined: April 01, 2012 Posts: 5445 Location: Seattle
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Posted: Tue Jul 27, 2021 4:40 am Post subject: Re: Bosch 010 problem. Loose floppy advance mechanism? |
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evanfrucht wrote: |
Glenn wrote: |
By "tuned out" it usually means a carb adjustment like enriching the fuel or a larger jet.
How about some engine specs such as carb(s)? |
It's an original Okrasa engine with a pair of real Solex 32PBIC's. Pretty neat actually. The carbs do look to have a fair amount of miles on them and/or have been sitting for a while. There is yellow staining on the outside, etc. |
That's a cool engine to have! A flat spot might be caused if the carbs are worn so the throttle shafts leak a little air. You mentioned staining, sometimes seen at the throttle shafts and below from a little fuel getting out through loose fit. _________________
Wildthings wrote: |
As a general rule, cheap parts are the most expensive parts you can buy. |
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evanfrucht Samba Member
Joined: July 24, 2016 Posts: 2180 Location: Laurel Canyon, CA
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Posted: Tue Jul 27, 2021 3:55 pm Post subject: Re: Bosch 010 problem. Loose floppy advance mechanism? |
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Glenn wrote: |
I've never heard of a "flat spot" or hesitation on an Okrasa engine with dual carbs and a Bosch 010.
Does it happen when the engine is fully warmed up? I've seen old dried grease between the mainshaft and upper advance cause the advance to stick and then loosen up when the engine heats up. |
The longest drive taken so far has only been about 10 minutes. So not fully up to temp, but at least semi warmed up.
I cleaned the distibutor and advance mechanism very well, and them sprayed it down with a grease-less spray lubricant, wiped up excess. Tested the mechanism by hand and it rotated smooth and snapped back well. So I don't think it the distributor being dirty. The distributor might not be perfect overall, it looks fairly well used, but my best guess would be that the advance is in spec. _________________ 1967 Bug ( the daily rod )
1964 Fury Wagon ( the pavement shredder ) |
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