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scottf1887
Samba Member
Joined: March 14, 2014
Posts: 139
Location: Tejas Baby!!
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 Posted: Thu Jul 19, 2018 3:25 am Post subject: Dual dellorto jetting advice |
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Guys,
Finishing up the last few things on my motor and I'll be taking it in for tuning at the shop next week before install. I'd like input on my jets from the experts in case I should call and order something new before tuning. Right now I have dual dellorto 40s with the sync linkage with 180 airs, 140 mains and 60 idle jets. The engine specs that should matter are below. Thanks!
1776 cc
C35 cam
40x35 heads with very minor port work
1.25 rockers w/hd springs
Light flywheel |
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scottf1887
Samba Member
Joined: March 14, 2014
Posts: 139
Location: Tejas Baby!!
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| Posted: Thu Jul 19, 2018 3:29 am Post subject: Re: Dual dellorto jetting advice |
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Oh, the intake manifolds are the standard length with no porting and I'm in beautiful north Carolina so hot, humid and by the ocean...thanks!
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74 Thing
Samba Member
Joined: September 02, 2004
Posts: 7394
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| Posted: Thu Jul 19, 2018 6:41 am Post subject: Re: Dual dellorto jetting advice |
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What size venturis?
I am assuming 34 venturis. If so then 55 idles, and 135 mains, and 180 airs. Get orig jets from aircooled.net or if you are using your own make sure you measure and verify them first. |
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67rustavenger 
Samba Member
Joined: February 24, 2015
Posts: 9772
Location: Oregon
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| Posted: Thu Jul 19, 2018 6:30 pm Post subject: Re: Dual dellorto jetting advice |
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| 74 Thing wrote: |
What size venturis?
I am assuming 34 venturis. If so then 55 idles, and 135 mains, and 180 airs. Get orig jets from aircooled.net or if you are using your own make sure you measure and verify them first. |
Uh. I'd call John to check before ordering. I have a set of idle jets on order from AC.NET for over a month now. Still on backorder.
To be clear, I'm not knocking AC.NET. Just stating a fact.
I have ordered Dellorto jets from Eurocarb in the UK and they arrive rather quickly.
Also, keep in mind that the stamping on Dell jets is not the same as Weber jets.
You have to measure to know what you are installing.
For instance, a Dell 60 idle jet measures .055".
I have several sets 60 idle jets with the Dell diamond stamp on them and they all measure the same.
Good Luck.
_________________
I have learned over the years.
Cheap parts are gonna disappoint you.
Buy Once, Cry Once!
There's never enough time to do it right the first time. But there's always enough time to do it thrice.
GFY's Xevin and VW_Jimbo! |
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fivelugshortaxle
Samba Member
Joined: May 13, 2011
Posts: 4254
Location: Aumsville, Oregon
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| Posted: Thu Jul 19, 2018 7:28 pm Post subject: Re: Dual dellorto jetting advice |
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| scottf1887 wrote: |
Guys,
Finishing up the last few things on my motor and I'll be taking it in for tuning at the shop next week before install. I'd like input on my jets from the experts in case I should call and order something new before tuning. Right now I have dual dellorto 40s with the sync linkage with 180 airs, 140 mains and 60 idle jets. The engine specs that should matter are below. Thanks!
1776 cc
C35 cam
40x35 heads with very minor port work
1.25 rockers w/hd springs
Light flywheel |
For comparison. I too live on the west coast about the same elevation as you. My 2332 is running 48 Dells and I'm using 60 idles, 160 mains, 200 airs.
_________________
Good things come to those who wait.
2332 with lots of goodies....
Rotating assembly balanced by Brothers VW
4340 84mm crank
AA 94mm p&c' s
Total seal 2nd ring, rest are Grants
5.5 h beams
Magnum straight cuts
Steve Long XR310 on a 106
CB 1.4 rockers
CB Magnaspark 2 distributor
NGK D7ea plugs
A1 lowdown 1 3/4 with single muffler
Dellorto 48's with 40 venturies
Kennedy Stage 2 with Daiken disc |
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67 Sunroof
Samba Member
Joined: February 22, 2014
Posts: 1836
Location: Salisbury, MD
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| Posted: Thu Jul 19, 2018 8:06 pm Post subject: Re: Dual dellorto jetting advice |
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| fivelugshortaxle wrote: |
| scottf1887 wrote: |
Guys,
Finishing up the last few things on my motor and I'll be taking it in for tuning at the shop next week before install. I'd like input on my jets from the experts in case I should call and order something new before tuning. Right now I have dual dellorto 40s with the sync linkage with 180 airs, 140 mains and 60 idle jets. The engine specs that should matter are below. Thanks!
1776 cc
C35 cam
40x35 heads with very minor port work
1.25 rockers w/hd springs
Light flywheel |
For comparison. I too live on the west coast about the same elevation as you. My 2332 is running 48 Dells and I'm using 60 idles, 160 mains, 200 airs. |
He said he was on the East Coast not West Coast.
Would that matter? |
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74 Thing
Samba Member
Joined: September 02, 2004
Posts: 7394
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| Posted: Thu Jul 19, 2018 10:13 pm Post subject: Re: Dual dellorto jetting advice |
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Good advice above. You can buy Dell jets from Alfa off Ebay from Europe as well (search dellorto jets). I think there is info on his ads that indicate that the idle jets measure 4-5 smaller than what is stamped on them. They are flow rated. So if you measure some 55 idles with gauges they will measure around 50-51.
The mains and airs should measure what is stamped on them. |
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scottf1887
Samba Member
Joined: March 14, 2014
Posts: 139
Location: Tejas Baby!!
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| Posted: Fri Jul 20, 2018 2:45 am Post subject: Re: Dual dellorto jetting advice |
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| Great info, thanks. I'll try to get ahold of ac.net today and see what he has on hand for jets. |
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mcdragracer
Samba Member
Joined: December 30, 2007
Posts: 714
Location: Cally
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| Posted: Fri Jul 20, 2018 7:28 am Post subject: Re: Dual dellorto jetting advice |
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| I believe I have a set of 55s in stock, ill be back in town this weekend, I can let you know if I have them, I generally carry most of the carb pieces in stock for the Dell's. |
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scottf1887
Samba Member
Joined: March 14, 2014
Posts: 139
Location: Tejas Baby!!
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| Posted: Fri Jul 20, 2018 8:16 am Post subject: Re: Dual dellorto jetting advice |
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| That'd be awesome, just let me know |
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mcdragracer
Samba Member
Joined: December 30, 2007
Posts: 714
Location: Cally
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| Posted: Fri Jul 20, 2018 9:13 am Post subject: Re: Dual dellorto jetting advice |
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| Will do. |
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mcdragracer
Samba Member
Joined: December 30, 2007
Posts: 714
Location: Cally
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| Posted: Sun Jul 22, 2018 9:45 am Post subject: Re: Dual dellorto jetting advice |
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I have the jets, go ahead pm if your still interested, $5.50 each, I can ship for free, I can just put it in a regular envelope. |
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