Rich running eddy 500 carb on RV8, advise on jet sizes.
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    Rich running eddy 500 carb on RV8, advise on jet sizes.

    Well guys
    here's hoping someone can help, so the engine is a Rover v8 vitesse 3.5 running a viper cam and has an edelbrock 500cfm carb and edelbrock performer manifold fitted. carb at present is running the following jets and metering rods

    prim jets 0.86
    sec's jets 0.93
    Rods 065 x 052
    Red spring

    The issue is its running very rich, plugs are black and so are exhausts, now car runs sweet above 2k, but is a pig on tickover and also hunts really badly below 2k, i did think it could be an ignition problem, but have installed new leads, dizzy, cap, rotor arm and also coil, have had a look around the internet and from what i read jets and rods are bang on the money, but the secondarily jets and springs are wrong, advise shows sec's @ 83 and springs should be sliver, now do the sec's control low end power??? or should i adjust the mains and rods, if so by how much????

    any advise welcome

    Ralph

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    I,ll answer my own question then

    83 jets
    80 prims
    067 x 047 rods

    Hahahaha

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    Aaaaahhhh, a bit of a Rover V8 fan I see! I'm an ex-rover V8 aficionado (the engines, not so much the cars) although I have owned a few P6s, and a P5B back in the day. I have also been responsible for a V8 Capri or three conversion, and a V8 Corsair in the early '80s. Excuse me for asking, but is not a 500cfm - er a little large for a 215ci engine?, or do you know something I never did?
    Cheers, Mark.

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    I am having this issue with my 3.9efi rv8.

    Sent from my galaxy S3 or it's not me

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    Quote Originally Posted by SnowmanE36 View Post
    I am having this issue with my 3.9efi rv8.

    Sent from my galaxy S3 or it's not me
    Bit different with a fuel injection Snowman. I'm certainly no expert on injection systems, but perhaps its over-fuelling on lower revs?

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    Quote Originally Posted by SnowmanE36 View Post
    I am having this issue with my 3.9efi rv8.

    Sent from my galaxy S3 or it's not me
    What issues are you having as know my way around that bloody efi system lol

    Quote Originally Posted by Zulu-One-Five View Post
    Aaaaahhhh, a bit of a Rover V8 fan I see! I'm an ex-rover V8 aficionado (the engines, not so much the cars) although I have owned a few P6s, and a P5B back in the day. I have also been responsible for a V8 Capri or three conversion, and a V8 Corsair in the early '80s. Excuse me for asking, but is not a 500cfm - er a little large for a 215ci engine?, or do you know something I never did?
    Cheers, Mark.
    Hi Mark
    Not sure what you mean in regards to 215ci? but a 500cfm work fine on 3.5 v8 and you cant buy a smaller one as eldebrock don't make them

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    Quote Originally Posted by Raffa View Post
    Hi Mark
    Not sure what you mean in regards to 215ci? but a 500cfm work fine on 3.5 v8 and you cant buy a smaller one as eldebrock don't make them
    Hi Ralph, 215 cubic inches = 3,528 cubic centimetres. Its what they were called by Americans when the engine was Buick/Oldsmobile. In the past, I have used Holley 4-barrel set-ups on the V8 lump with a K&N to top it off. The Holley's I used flowed 390, hence the 390 Holley.

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    Quote Originally Posted by Zulu-One-Five View Post
    Hi Ralph, 215 cubic inches = 3,528 cubic centimetres. Its what they were called by Americans when the engine was Buick/Oldsmobile. In the past, I have used Holley 4-barrel set-ups on the V8 lump with a K&N to top it off. The Holley's I used flowed 390, hence the 390 Holley.
    Hi Mark
    I,ll get my coat lol, well when I was looking, most off the tuners were using these carbs and I know a few guys who run them on there V8's without any issue's, my car did have efi but I binned it mate as was brought as a no runner and I could not work out for the life off me why it run like shit, the issue I had when I posted this thread, was at 1k-2k revs car would be jerky, but run well above that rev range, have not tried the new jetting as been rebuilding the car and nearly finished, so hopefully it was just overfueling, cheers Ralph

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    All good stuff Ralph. The 390s, or even the old SD1 S.U's, which also flowed 390 are good for up to 3.7 litres with fast road/rally cams. After that, the larger flowing carbs would come into their own. You will need it set up on the rollers when finished to get it set bang on, as guess work can be expensive and frustrating!
    Keep us posted how you get on with it, as I still have a soft spot for that old all-ali lump. (Did you know that when they were in US production, they were called the "fireball eight", they were die-cast, and looked boooootiful. Imagine polishing that lot up!!!)

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    Quote Originally Posted by Zulu-One-Five View Post
    All good stuff Ralph. The 390s, or even the old SD1 S.U's, which also flowed 390 are good for up to 3.7 litres with fast road/rally cams. After that, the larger flowing carbs would come into their own. You will need it set up on the rollers when finished to get it set bang on, as guess work can be expensive and frustrating!
    Keep us posted how you get on with it, as I still have a soft spot for that old all-ali lump. (Did you know that when they were in US production, they were called the "fireball eight", they were die-cast, and looked boooootiful. Imagine polishing that lot up!!!)
    Tvr fitted with a fireball Eight, now that sounds sweat and yes mate I should have it running again this weekend, so will give you a shout and cheers

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