32/36 DFEV jetting

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

32/36 DFEV jetting

Post by chrisg »

now that I've finally got a secondary circuit that feels close to right on my 1608 with a 32/36 & single plane manifold, I'm curious what other folks have landed with in terms of jetting. I think when I originally installed this, besides smaller idle jets, I generally was running a modest variation on the nominal jetting (I'll pull the numbers from my note pad this evening & update this). After finally putting some real miles on the car, I got a better feel for what seems to need & decided to try mimicking the DHSA secondary circuit with a 155 main & 150 air corrector. This may still be less than ideal for this engine, but at various points along the way (albeit, in fits & spurts with long intervals of rest in between) I noticed there isn't a lot of notes online on what folks are ultimately running & pleased with on these carburetors. I don't expect the Internet to tune my car, but reading about tuning these on various applications I realized there are a lot of seemingly vastly different approaches, so I was curious what finds favor around here with twin cams of various sizes.

thanks in advance
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
bluespider262
Posts: 160
Joined: Mon May 25, 2015 11:14 am
Your car is a: 1979 Spider

Re: 32/36 DFEV jetting

Post by bluespider262 »

I have notes at home for what I'm running in my 2.0L but not sure how close that might be for a 1.6. Some will probably be off a size or two I'm guessing.

I've hard the car off the road since last summer but I'm hoping to FINALLY get it running in a week or two. I moved my AFR gauge setup from my Jeep to the fiat so I can dial in the carb (running a Holley 5200) so I'll post where I end up assuming something else doesn't go wrong.
Shadoobie
Posts: 113
Joined: Mon Mar 03, 2014 10:07 pm
Your car is a: 1979 Pininfarina Spider 2000

Re: 32/36 DFEV jetting

Post by Shadoobie »

I am also curious to know what you have for the 2 liter. I have a 79 with the DFEV myself and the factory jetting is giving me some trouble.
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