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Hello, I new and have a carburetor question.

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Hello, I new and have a carburetor question.

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Old 07-26-2018, 02:14 PM
  #21
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Location: Collierville, TN and Pickwick Lake
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Originally Posted by SB View Post
Research needle and seat sizing also. A few members have run into tuning issues due to the needle and seat not being large enough on the Edelbrocks/Webers.. Yeh, more hp than yours, but not a ton more.
I turned a motor into scrap iron and this was the cause. The boat came from higher altitude, (Lake Powell) and had been tuned accordingly. I exchanged the metering rods using the smallest ones I had in my kit but that wasn't enough.......BOOM
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Old 07-28-2018, 11:24 AM
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Thanks for the help guys. Im going to run it again Sunday then pull a plug for another look.
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Old 07-28-2018, 01:40 PM
  #23
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You may already know this, the reading is most accurate if you can just turn the key off at the RPM you want to check.
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Old 07-28-2018, 01:43 PM
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Yeah, i know.
thanks.
ealked into napa thisd morning ans ssw a edebrock 1409 marine for 500. Almost did it lol.
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Old 07-28-2018, 02:52 PM
  #25
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Don't know if you can trust it, https://www.ebay.com/itm/Carburetor-...from=R40&rt=nc
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Old 07-28-2018, 02:55 PM
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seller has zero feedback on zero history.. shipping is 2 bucks..
Seems legit

Thanks for the link, wish it could be trusted!

Last edited by Baitkiller; 07-28-2018 at 02:58 PM.
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Old 07-28-2018, 02:57 PM
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Best of luck !!
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Old 08-04-2018, 11:18 PM
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Thought I would post back.
Changed the wires and coil, turned up the timing from 30 to 32* all in. I did see some corrosion in the coil socket and the timing strobe that used to be erratic is now very steady.
Runs much better now. I saw (analog) 5000 RPM with decent pull. I killed the key and pulled #5 plug. Looked nice and tan. I have some pics on my phone I can put up later.
I feel there is still more in the box performance wise but it's close now.
Thanks much.
John
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Old 08-07-2018, 06:53 AM
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I have done a few vortec set ups, normally they do not like timing over 30 total, they themselves raise compression. last I did I had comp grind a custom roller to make max power @ 5500, using performer RPM intake and a 600 edelbrock runs very well, It is in a light sterndrive setup. I did a twin engine setup a while back, ran ok but never performed like we thought it should...but it was on old shortblocks(killed heads why we went vortec) jump ahead current, one engine got overheated and killed, so bought 2 reman for builder in Fl and now one is down on power after very few hours, just getting into this as we speak..
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