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Relocating Jets
Posted by: triumphcorvair ()
Date: January 20, 2012 12:19PM

I've read about modifying carb jets numerous times but never really understood how to do it.

Can someone please tell me how this is done?

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Re: Relocating Jets
Posted by: tboltkc ()
Date: January 20, 2012 01:09PM

The jet is removed from it's stock location and that hole is plugged. Another hole is drilled through the carb body from the side into the bowl (if you hold the bowl so it makes a U, it would be on the right I think) and through the inside wall of the bowl into the same passage the original location taps into. This inner hole is tapped for the jet. The hole in the outside of the carb body is tapped for a plug.

I had a set done and am going off memory of what it looked like, but that is the gist of it.

-Travis


'65 Corsa; '63 Convertible; '62 Wagon; '65 4 Door
Heart of America Corvair Owners Assocation (Kansas City, MO)

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Re: Relocating Jets
Posted by: MattNall ()
Date: January 20, 2012 01:17PM

The modified Rochester HV carbs have the main jets relocated to the sides of the fuel bowls, using the passage for the PowerValve, which is eliminated.





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Relocating Jets
Posted by: triumphcorvair ()
Date: January 20, 2012 01:33PM

Thanks Travis...I can somewhat visualize this. I'll have to get a carb to get a better perspective.

I'm assuming you could just use an old jet, fill it with JB Weld and use it for a plug.

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Re: Relocating Jets
Posted by: John Luscinski ()
Date: January 20, 2012 04:32PM

Actually the hole would be on the left not the hole for the power valve.

YOU STILL need the the power valve circuit. By removing the power valve circuit you will loose the high speed circuit mixture. So I beleive that you would not want to mount it to the power valve circuit

"Been there and done that! Well Not everything.smiling smiley
65 500 2dr Coupe
63 Greenbrier

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Re: Relocating Jets
Posted by: MattNall ()
Date: January 20, 2012 04:45PM

Sadly I cannot even find a pic over at FastVairs...

DrYenko, Michael LeVeque both offer the service... maybe they'll chime in..





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Relocating Jets
Posted by: martyscarr ()
Date: January 20, 2012 05:37PM

MattNall Wrote:
-------------------------------------------------------
> Sadly I cannot even find a pic over at FastVairs...

Here's a pic for you Matt; I've done several sets of carbs with this mod. I like to weld a boss on the side of the carb bowl to help retain the exterior plug.

If you're careful, you can remove the plug and change jets without disassembling the carb. I use a special screwdriver to capture the jet after I've loosened it.


Marty Scarr

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Re: Relocating Jets
Posted by: MattNall ()
Date: January 20, 2012 05:50PM

Thanks Marty!!

Any chance you have one of a bowl??? ggg





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Relocating Jets
Posted by: texas yenko dude ()
Date: January 20, 2012 07:47PM

If I was home I could post some snaps of one apart. I will be back Monday night.

Texas YENKO Dude
YS-070
YS-199
YS-320
Southeast of Disorder


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Re: Relocating Jets
Posted by: MattNall ()
Date: January 20, 2012 07:55PM

Thanks Shaun!





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Relocating Jets
Posted by: triumphcorvair ()
Date: January 20, 2012 07:57PM

texas yenko dude Wrote:
-------------------------------------------------------
> If I was home I could post some snaps of one
> apart. I will be back Monday night.


Thanks! I'll be looking forward to seeing some pics.'

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Re: Relocating Jets
Posted by: 4MiloEli ()
Date: January 21, 2012 07:00AM

Michael LeVeque just finished doing the jet relocation modification to my 140, along with installing Roger Parent's new 140 linkage. If I knew what to take pictures of, I'd be happy to.

Jay Pitchford
65 Corsa convertible
Columbus OH


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Re: Relocating Jets
Posted by: Mike Stillwell ()
Date: January 21, 2012 07:52AM

Marty - How do you weld on the bowl? I thought it was pot metal and I've been tossing the bowls that get cracked when I relocate jets. Thanks in Advance!

Mike
YS-117

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Re: Relocating Jets
Posted by: Scott V ()
Date: January 21, 2012 08:01AM

Mike Stillwell Wrote:
-------------------------------------------------------
> Marty - How do you weld on the bowl? I thought it
> was pot metal and I've been tossing the bowls that
> get cracked when I relocate jets. Thanks in
> Advance!

i think the bowl is aluminum alloy.

-Scott V.

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Re: Relocating Jets
Posted by: cnicol ()
Date: January 21, 2012 08:48AM

Here some shots of a modified carb:
(I didn't modify this carb - it belongs to a friend of mine and is here for a different mod)

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

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Re: Relocating Jets
Posted by: MattNall ()
Date: January 21, 2012 08:56AM

Thanks Craig!





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Relocating Jets
Posted by: davemotohead ()
Date: January 21, 2012 09:09AM

So basicaly you drill out the power enrichment Plug and then the interior passage,,thread both,,intall jet,,seal exterior hole,,plug stock jet location,,ok,,what are the benifits from this mod? Never heard of this before,,is it just to make it easyer to change jets without taking the carb apart? or are there other performance type benifits?





Email me at: Dave Motohead

1960 4dr sedan caveman car
1961 Rampside (Chetside)
1962 Rampside (Barnside)
1962 Short Rampside (Shortside)
1962 Monza 700 Wagon
1963 Monza 900 coup (General Nader)

-----------------------------------
Rust Free Lancaster Ca

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Re: Relocating Jets
Posted by: Mike Stillwell ()
Date: January 21, 2012 10:21AM

Dave - It's to prevent fuel starvation under hard cornering.

Mike
YS-117

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Re: Relocating Jets
Posted by: Tom Z ()
Date: January 21, 2012 11:29AM

..one detail Seth gave me when I tried it--after getting the 'plug' out of the bowl,you need to get the tiny brass orifice out of the INside..he guessed a 1/16" drill would cut into it enough to pull it out..the ones on my car were done by David C..

Tom Z,,Rochester NY

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Re: Relocating Jets
Posted by: 4MiloEli ()
Date: January 21, 2012 12:23PM

davemotohead - Mike Stillwell is correct. I haven't been able to starve mine during hard cornering since the mod was done last month. Michael also installed a set of fast arms and lowered it a little, so goodness knows I've tried hard enough. thumbs upthumbs up

Jay Pitchford
65 Corsa convertible
Columbus OH


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