DHSA Jet Kits?

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PatTroy
Posts: 43
Joined: Thu Jan 14, 2016 1:25 pm
Your car is a: 1972 124 Spider

DHSA Jet Kits?

Postby PatTroy » Wed Jul 27, 2016 10:26 am

Hello all,

I am beginning to pull more power from my 1608. First up will be headers and exhaust due to ease of application.

I order to be prepared for increased flow, I'm looking to buy jets for the DHSA carb. I believe this is similar to the DFEV? It appears to have a ton of jets in each barrel.

Any idea where to get a kit for these carbs? Or which jets should be investigated (just idle and main?). I will have a wideband hooked up with the new exhaust system.

Thanks!

carl
Posts: 244
Joined: Mon Oct 06, 2008 9:56 am
Your car is a: 1971 128

Re: DHSA Jet Kits?

Postby carl » Wed Jul 27, 2016 12:10 pm

Yes, same jet family as DFV or DGV carbs. Weber carb vendors such as Pierce Manifolds should have a fairly large selection. Not aware of any jet kits per se. You will probably just need main jets, I would not think you would have to change idle jets or air correctors. Just be thankful you don't have twin IDFs and have to buy four of every jet.

PatTroy
Posts: 43
Joined: Thu Jan 14, 2016 1:25 pm
Your car is a: 1972 124 Spider

Re: DHSA Jet Kits?

Postby PatTroy » Wed Jul 27, 2016 12:34 pm

Thanks Carl. I will be going DCOE eventually, so at that point I will need 4 of each!

PatTroy
Posts: 43
Joined: Thu Jan 14, 2016 1:25 pm
Your car is a: 1972 124 Spider

Re: DHSA Jet Kits?

Postby PatTroy » Wed Jul 27, 2016 12:51 pm

Anybody know the stock jet sizes? I can't seem to find this in any of my manuals...

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aj81spider
Patron 2020
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Posts: 1526
Joined: Fri Mar 11, 2011 9:04 am
Your car is a: 1974 Fiat 124 Spider
Location: Chelmsford, MA

Re: DHSA Jet Kits?

Postby aj81spider » Thu Jul 28, 2016 9:03 am

Here's a table of stock jetting:

Image
A.J.

1974 Fiat 124 Spider
2006 Corvette
1981 Spider 2000 (sold 2013 - never should have sold that car)

carl
Posts: 244
Joined: Mon Oct 06, 2008 9:56 am
Your car is a: 1971 128

Re: DHSA Jet Kits?

Postby carl » Thu Jul 28, 2016 12:47 pm

Unless your spider is right hand drive, DCOEs are going to be a real pain to install as the brake booster and the master cylinder are in the way. That's why everyone uses IDFs.

PatTroy
Posts: 43
Joined: Thu Jan 14, 2016 1:25 pm
Your car is a: 1972 124 Spider

Re: DHSA Jet Kits?

Postby PatTroy » Fri Jul 29, 2016 8:25 am

AJ, that's exactly what I needed to order my new jets. Thanks!

Carl, thanks for the heads up. I'm aware of the clearance issues and have solutions planned. I'm racing in a class where I'm penalized equally for the carb change (2 bbl/4 bbl, DCOE, IDF, whatever) and brakes are free... Hopefully I'll have photos by early next year.

pwilliam
Posts: 174
Joined: Fri Nov 02, 2012 4:30 pm
Your car is a: 1972 124 Sport Spider

Re: DHSA Jet Kits?

Postby pwilliam » Tue Aug 09, 2016 3:27 pm

This info is also in Artigue's book.

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chrisg
Posts: 746
Joined: Sun Jun 04, 2006 7:30 am
Your car is a: 1971 FIAT

Re: DHSA Jet Kits?

Postby chrisg » Wed Aug 10, 2016 10:34 am

I'd be interested in hearing what jets and a header vs. the stock manifold get you. I'd always figured that (at least compared to the traditional header designs...there are much better designs readily available now) the stock manifold (on the 4-2-1 setups, that is) flows pretty well.
Chris Granju
Knoxville, TN
'71 FIAT 124BS (pretty), '72 FIAT 124BC,'76 FIAT 128 Wagon(ratbeast), '85 Bertone X 1/9, '70 124BC (project), 79 X1/9 (hot rod in rehab), '73 124BS (2L, mean), '74 124 Special TC, '73 124CS, '73 124 Familiare


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