>Oh, one thing I forgot to mention, it runs rough regardless of RPM. It only
>runs smoothly when I accelerate. Then it is VERY smooth!
Means that your power valve is working.
Did you set the float height?
Tell us the choke/venturi sizes (usually cast into the side of the carbs), and
we can probably tell you the propper primary and secondary main jets.
Typically, the venturi on a 32/36 is 24 and 27mm.
There are many models of DGV or DGEV or DGAV ECT and many are application
specific, where
a specific venturi diameter and corresponding main jets are needed.
One set of jets may work well in one carb, but not another.
The idle jets are usually not a problem, as you can usually make the engine
idle even of its the wrong idle jet. The worng idle jet MAY still stumble in
the transition between idle and cruising throttle position.
The air correction jets will usually cause a problem at the top end, so dont
worry too much about them (might not even be removable).
The accel pump jet or linkage doesnt sound to be the problem either.
Its been mentioned allready, but if you get some good quality carb cleaner
(not the kind you get in California) you can spray arround the carb base, and
intake
manifold to head interface, and perhaps discover where your vacuum leak is.
Jarrid Gross
-----Original Message-----
From: owner-alpines@autox.team.net
[mailto:owner-alpines@autox.team.net]On Behalf Of cs_tscg@bellsouth.net
Sent: Monday, February 03, 2003 3:25 PM
To: alpines@autox.team.net
Subject: Re: Re: New Engine & Overdrive
Oh, one thing I forgot to mention, it runs rough regardless of RPM. It only
runs smoothly when I accelerate. Then it is VERY smooth!
>
> From: ellis838@concentric.net
> Date: 2003/02/03 Mon PM 05:57:53 EST
> To: "alpines@autox.team.net" <alpines@autox.team.net>
> Subject: Re: New Engine & Overdrive
>
> Rough running at low rpm could be a lot of things valve adjustment,
> vacuum leak and such but if you have all these things right and feel
> good about the condition of the engine my guess is it is to lean. Try
> increasing the main jet size in the primary and see if it gets better.
> 140 primary and 160 secondary would be a good place to start if you have
> a big cam you may want to go bigger. Jim E
>
> cs_tscg@bellsouth.net wrote:
>
> >Over the past few weeks, I have been working the Series IV. The first thing
>I did was replace the original engine which had started leaking water
>internally. I replaced it with my rally engine I had built a few years ago. It
>was going in a car I wanted to use to enter road rallies. However other
>commitments have prevented me from going ahead with this project. The engine
>is a early series with .060 pistons and a late series head. It also has the
>late series fuel pump. I am running the single Weber, but plan to switch it
>with the duel 40DOCEs. I went with the 1600 block because I wanted the block
>to match the car. (which now it doesn't) I am having a little trouble tuning
>everything. I didn't think the setup would make much difference in jetting,
>but it may. When I activate the 2nd stage of the car, it runs great. But when
>I am just cruising, the car runs rough. I will look into this in the next week
>or two as time permits. Maybe I will just go on with the dual 40s. I am o!
pe!
> n!
> > to opinions on the jetting issue.
> >
> >The other thing I did was install one of two overdrive transmissions I had.
>I hooked everything up last night but did not have time to test drive. My
>first experience with the new transmission was this morning on my way to the
>airport. Wow! What a big difference it makes. I was racing the big SUVs! I did
>no expect it to work first time out since I was using old scavenged electric
>parts. But one flick of the switch and the RPMs dropped. What a good feeling.
> >
> >Next - AC and a hardtop!
> >
> >Just wanted to share the joy
> >
> >Chris Stephenson
> >PeopleSoft Implementation and Support
> >cs@tscg.net
> >(404) 915-7669
> >
> >.
>
Chris Stephenson
PeopleSoft Implementation and Support
cs@tscg.net
(404) 915-7669
|