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Tram
Samba Socialist
Joined: May 02, 2003
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Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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 Posted: Wed Oct 03, 2018 7:43 pm Post subject: 1966 912 Insect Fogger |
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Yes, like the title says. Oh, well, these things happen.
If I am going to tear this thing down to re-ring, I'll send the heads out to my machinist too for a go- over, of course.
What I'm wondering though... is...
Would it be worthwhile to just buy some drop- in 86mm P&Cs, go to a 123 ignition, and maybe re- jet the carbs a bit to compensate?
If so, what brand would you recommend on the P&Cs and what size jets in the Solexes?
What I want to avoid here is a mistake, as aftermarket upgrades that sound like a good idea sometimes are. A bump in power would always be nice, though, because... well, because.
Thoughts?
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[email protected]
Samba Member
Joined: December 28, 2016
Posts: 279
Location: atlanta ga
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| Posted: Thu Oct 04, 2018 1:01 pm Post subject: Re: 1966 912 Insect Fogger |
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| are you sure that the engine is bad and not just a missing cylinder or overfilled oil ? |
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Tram
Samba Socialist
Joined: May 02, 2003
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Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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| Posted: Fri Oct 05, 2018 3:57 pm Post subject: Re: 1966 912 Insect Fogger |
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| [email protected] wrote: |
| are you sure that the engine is bad and not just a missing cylinder or overfilled oil ? |
It's not missing, and not overfilled. Seems my issue is likely valve guides, since it blasts blue smoke on decel as well as startup.
Mainly, I just wanted to know if anyone has actual experience with the upgrade I'm considering. The 123 Ignition I'm confident in as I have done these before. Mainly I'm interested in finding out if the slip in big bore stuff is an 'attaboy' or an 'aw, shit', and what the best carb rejet sizes might be if it's an 'attaboy'.
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Erik G
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Joined: October 16, 2002
Posts: 13278
Location: Tejas!
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| Posted: Wed Oct 10, 2018 3:35 pm Post subject: Re: 1966 912 Insect Fogger |
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1720 P's and C's = attaboy
so is a bursch exhaust
I don't like the 123 on a porsche or a vw. 031 is my fav for the 912, recurved 009 - the 0012 is good, as is the 022. any kind of electric noise will drive you crazy with the 123
I had the split shaft solex's, and they were too expensive for me to rebuild, so I built some dell 40's for the application. It was great 
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Starbucket
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Joined: April 30, 2007
Posts: 4025
Location: WA
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| Posted: Thu Oct 11, 2018 2:31 pm Post subject: Re: 1966 912 Insect Fogger |
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| If you have the money Nickies (LN Engineering) are the best. I wouldn't rejet until I saw how it ran. |
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Tram
Samba Socialist
Joined: May 02, 2003
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Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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| Posted: Sun Oct 14, 2018 2:12 pm Post subject: Re: 1966 912 Insect Fogger |
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| Erik G wrote: |
1720 P's and C's = attaboy
so is a bursch exhaust
I don't like the 123 on a porsche or a vw. 031 is my fav for the 912, recurved 009 - the 0012 is good, as is the 022. any kind of electric noise will drive you crazy with the 123
I had the split shaft solex's, and they were too expensive for me to rebuild, so I built some dell 40's for the application. It was great |
Good info- thanks. I've had really great results with 123 ignition on 911s and Benzes, but these have alternators and not generators, so you may be right about electrical interference.
I'm thinking that an increase in jet size pretty much HAS to be necessary, though.
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| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 22727
Location: Still Feelin' the Bern- Once you've felt it you can't un- feel it.
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| Posted: Sun Oct 14, 2018 2:13 pm Post subject: Re: 1966 912 Insect Fogger |
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| Starbucket wrote: |
| If you have the money Nickies (LN Engineering) are the best. I wouldn't rejet until I saw how it ran. |
Exactly what we've narrowed it down to. Thanks.
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| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
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Starbucket
Samba Member
Joined: April 30, 2007
Posts: 4025
Location: WA
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| Posted: Sun Oct 14, 2018 2:21 pm Post subject: Re: 1966 912 Insect Fogger |
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| They are on sale now. Subscribe to their news letter, lots of good info. |
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