EFI vs Carbs, This will start a crap storm |
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EFI vs Carbs, This will start a crap storm |
ellisor3 |
Apr 16 2009, 06:28 AM
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#1
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HPWhore Group: Members Posts: 811 Joined: 23-October 08 From: Fleming Island, Florida Member No.: 9,683 Region Association: South East States |
I inherited a pair of Zenith carbs on my six conversion I purchased last year. Yes that is Zenith, not PMO or Weber-Zenith. The set-up was done by Motor Scheister several years ago by the PO (IMG:style_emoticons/default/sheeplove.gif) . I have been working with these for the last month to get them tuned and sync'd. I can not for the life of me get them right. They will idle ok but at acceleration they backfire or vise versa. They were rebuilt at AA back in the summer, but that did not solve the problem. No exhaust leak, new plug and the same problems. Some adjustments don't have any effect at all on the set-up. (IMG:style_emoticons/default/headbang.gif) I am at my wits-end on these damn things.
Anyway my delima is whether I should replace the Carb's with PMO or Weber or simply junk the carb idea and move to EFI. Here are some of my considerations, but wanted some I may have missed. 1.) Cost of Carb PMO's $3500 2.) Cost of EFI ?? 3.) Ease of adjusting/reliability-EFI 4.) I live in Florida so high humidity-EFI?? 5.) Fuel efficency-EFI 6.) Acceleration-Wash?? Thanks for your input |
McMark |
Apr 16 2009, 11:45 AM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
(IMG:style_emoticons/default/agree.gif) You could easily spend thousands chasing a problem. Sounds like you need to do some more troubleshooting/investigating. Have you done a compression test? Leakdown test? Double checked timing? Adjusted valves?
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ellisor3 |
Apr 16 2009, 11:55 AM
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#3
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HPWhore Group: Members Posts: 811 Joined: 23-October 08 From: Fleming Island, Florida Member No.: 9,683 Region Association: South East States |
(IMG:style_emoticons/default/agree.gif) You could easily spend thousands chasing a problem. Sounds like you need to do some more troubleshooting/investigating. Have you done a compression test? Leakdown test? Double checked timing? Adjusted valves? I had the car shipped to AA before it came here and Sean checked it out and did not find any real issues with compression. He said he had this thing set up pretty well when it left AA but when it got to Florida it was FUBAR, maybe because of the drop in elevation, who knows. The engine sounds strong and runs strong except for the popping and backfiring. |
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