Now 2332 port blow through! Edelbrock 600*NOW WITH FITECH! on my daily 2276

[VdanielW]

Buguy- tuning with an afr gauge is the only way to know for sure you are running on the lean side of safe. I can put .5 to .75 large jets in to a set of Weber’s and not notice a drivability difference, but fuel economy would be crap. When I first started tuning this way I realized I was way off on my tuning!


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[buguy]

Oh you don't have to tell me! I spent hundreds of hours changing damn jets in my Holley/Holleys when I was draw through. That's why I'm switching to efi! Just got tired of smelling like gas all the time! I tuned on mine without an AFR Gauge for nearly 10 years before I finally got one. I thought I had it pretty good, but I was wrong. I was fat at idle, lean in the middle, and fat again up top.
I ended up buying one of those adjust a jets for the Holley and started switching to efi a few weeks later.

[VdanielW]

The adjust a jet is awesome- I had one on my Holley. I’m going with fitech on my race engine. My plan was to also use fitech on my daily, which may still happen. But if I can get my edelbrock to hit my fuel economy needs I may not. The biggest difference is cold start of course is night and day different, very stable afr at all throttle angles, and afr adjustability on the fly! Not to mention complete injector shut down in decel. All good stuff...in the right hands!haha


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[buguy]

Makes sense. That's the one thing with mine that was always awesome was the startup. It didn't even make one revolution before it would fire up.

[VdanielW]

Nice. My Holley has the choke assembly removed, but the edelbrock still has it. It was great in the winter but I had to adjust it so it doesn’t come on in the summer. It would set and be too rich (restrictive) and a cause a flood or really rich condition. Not a big problem when I leave for work in the morning and it’s already in the 90’s- don’t really need much warm up time.


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[buguy]

Yeah my choke was gone too but I think I had just the right amount of fuel puddling that it would start quick!

[VdanielW]

Ever fine tuning my edelbrock I want to ream a jet out to an in-between size (between a .089" and .092", 226-234mm) but my reamer kit only goes up to a 215 or so. Does anyone offer reamers larger than the usual kit we use on our webers? I don't want drill bits (I already have those) because I'm not looking for a specific size, I need some in-between size that i can tailor with a reamer.
I figured I needed to clarify - I'm looking for a tapered reamer that will cover larger jetting than the standard reamer kit. Looking for some in the 215-300mm

[panel]

Why a tapered reamer ?

[VdanielW]

Just like the standard jet reamer kit. With the taper I can slide the .092" jet on the reamer and mark the reamer. Then slide the .089" jet on, see the difference of size between the two and decide where to ream to on the smaller jet. I did this many times with my weber idle jets - the difference between a 50 and 55 idle jet is huge.

[VdanielW]

Weather finally got comfortable so had a chance to drive out to Orange County (went to see AJ at Low Bugget) and was just shy of the 30mpg mark that I wanted to hit- 29.8mpg! Happy that I was close, but my afr was slightly richer than I was shooting for but I didn't bring my tuning rods with me. I have made the adjustment, so I'll give the trip another try and am expecting at the least 30mpg. My around town is staying pretty steady at 21-22.5mpg. Driveability is great and next I'll start tuning in the lower vacuum (2"hg) and under boost. My o2 sensor does not like boost and will blank out under boosted conditions (never was an issue when I was na on this engine), so I may put it on a dyno to tune underboost.

[madmike]

Great mileage, are you even in boost at all doing this?
I'm getting 28 mpg. but I 'Boost' 3-5 time's per trip sometime more,, bet if I remove the roof rack and ease up on the the loud pedal I'd be getting 30+ bummer no number's when boosting what afr gauge u running?

[VdanielW]

My engine produces so much torque that I rarely get below 10”hg. When boosting you have to imagine mpg are going to drop majorly (I have seen on the wife’s mustang under boost mileage is in the single digits). Roof racks make a huge difference (watch you vac/boost gauge with and without it). I’m using an apsx WB (cheapest kit I could find- been using it for years and other than a couple of sensors and one reboot on the gauge it has been working great).


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[VdanielW]

I've been performing further tuning on the eddie (I'm now an "edelbrock person" so I can say it lol) and I have gotten rid of all the hesitation bugs edelbrocks are know for, so I thought I'd share for anyone wanting to give this carb a try...
1st, the accel jet is way too small. Mine was a .031" and I had a spare .028". So I drilled out the .028 to a .041" (105mm). This eleminated the stumble and lean spike when running on the primaries. The carb still had a stumble/lean spike going into the secondaries...
This one took a lot of research- I found two instances where an old carter afb modification was used and worked. Remove the secondary venturi cluster and remove the small brass tube (this is used to emulsify the fuel upon first tip in to the secondaries, before the main emulsion tube begins). The design of this tube was causing the major lean spike and subsequent flat line of my afr gauge (it would never read under boost- problem solved!).
I spent Saturday with the RealStreet 91 Octane guys in Arcadia for their required cruise- a much different cruise than I'm used to with my local club! Alot of fun with some fast ass naturally aspiriated 91 octane bugs! I put 244 miles on it Saturday to get there and back and got 29.9mpg. I'm totally happy with my eddie and its ability to not only get good fuel economy, but to also be able to hold an idle without loading up (holley...).
Here is my jetting:
.098" primary
.095" secondary
1st rod: 73/37 w/silver spring (8"hg)
2nd rod: 73/42 w/stretched silver spring (12"hg)
acel jet: .041"
I still need to get my underboost readings where I want them, but that shouldn't be hard now.

[madmike]

Glad u stuck it out with carb and not jump on the EFI wagon my Holley doesn't load up at Idle,, but the Demon did a little ,,but I didn't have the RLR intake on it that time ether.
thanks for posting them 'Top secret' settings for the "Eddy' I 'm sure someone will benefit

[VdanielW]

One problem that I do still have is cold morning load up. It will load up at idle on cold mornings. I was thinking this was icing up of the carb manifold (before the turbo). So one day with it cold I drove to work and touched the manifold- ice cold. Later on that day (driving home and back to work for lunch) with no drivability issues I touched the manifold- still ice cold. So what section of the intake is getting so cold it is causing this load up/fuel out of suspension- it’s the lower “y” or “t” section. This section gets heat from the heads that keeps it from loading up. Volkswagon, of course, used heating from the exhaust. Well I’m not going to cut up my header! So, I did some searching online and found some little heating pads that have a 3m adhesive (1”x1.5”). These little guys will get up to 100degF and on cold starts should add just enough heat. They arrived today, so this week I’ll get them wired up and put on and I’ll see if that’s all it needs. I will wire them to my running lights so I can shut them off after the cold drive.


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