Edelbrock Jets
As you will see from the note below, Edelbrock did not mention I should change the Needle along with the jets, if he would have said this I would have bought the complete kits, instead I purchased 3 sets of jets.
COPY OF EDELBROCK NOTES:
With today's fuels, you should have at least 10 degrees at an idle, if not more timing. Reducing the jet size will remove fuel from high rpm ranges. Thanks.
Ray Garcia
Technical Department
Edelbrock Corporation
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include the original email---
-----Original Message-----
From: chuckphillips@juno.com [mailto:chuckphillips@juno.com]
Sent: Friday, August 17, 2007 5:33 PM
To: Raymond M. Garcia
Subject: RE:
Per factory Spec's. 6 degrees at idle.
I will try the new justs, Can I get them at any parts store? What will the new Jets do for me?
-- "Raymond M. Garcia" <rgarcia@edelbrock.com> wrote:
What is your total timing? Try reducing the secondary jet size to the
#1425 (.092") jets. Make sure your total timing is at least 30 degrees
by 3000 rpm. Thanks.
Ray Garcia
Technical Department
Edelbrock Corporation
---When responding to our reply, please
include the original email---
-----Original Message-----
From: chuckphillips@juno.com [mailto:chuckphillips@juno.com]
Sent: Friday, August 17, 2007 11:46 AM
To: Raymond M. Garcia
Subject: RE:
Hello.
We checked the fuel pressure and all is Good!
We had the timing set.
We changed wires and plugs.
Idle's great. At High RPM's or Getting into it I get black smoke and it
seems to LOAD up or something. Is there some other adjustment I should
make? The screws are 2 1/4 turns out.
-- "Raymond M. Garcia" <rgarcia@edelbrock.com> wrote:
This pump should be okay, but you will still need to verify that the
pressure is below 6psi at all times. Thanks.
Ray Garcia
Technical Department
Edelbrock Corporation
The edelbrock manual's not very long and give's a lot of good tips on how to tune. Just go step by step and you won't be steered wrong. If you can swap out jets, you've got all the technical knowhow to tune an edelbrock carb, since that's about as hairy as it gets.
Start with the base settings and work from there. It's going to be a lot of trial and error, just seeing what feels better, what feels worse and working from there. Try going richer, if it feels better, got richer and eventually it won't feel better, then go back.
Pick up a calibration set. When I ran an edelbrock, I did that, then went and picked up an assortment of rods/jets to play with. At my altitude, everything that came in the cal kit was too rich and I needed to go the other way.
Good luck with it. The best advice it to follow the manual.....an example...everyone always gripes about how aweful the edelbrock electric chokes work. They bad mouth them up and down. I wen through, followed the instructions, set this to 1/16" and that to 7/32", etc, and it worked perfectly right from the get go.
The guys who wrote the manual weren't dumb. Follow the advice there and you can't go wrong. After a while, you'll figure out the jet/rod sizes and what effect they have and you'll be able to experiment with you're own combos.
C






