the saga continues... |
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the saga continues... |
lotus_65 |
Jun 3 2012, 07:27 AM
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#1
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Senior Member Group: Members Posts: 1,608 Joined: 21-March 05 From: minneapolis, mn Member No.: 3,795 Region Association: Northstar Region |
for those who have read my posts, you know i've had an adventure with this car.
it's back, rebuilt 2056 and i ran it around some yesterday. i've come to the conclusion that the single biggest issue, one that's caused the demise of at least one engine has been: the PMO Weber 40 IDF that were put on because the guys i initially took the car to and asked to get tuned up were too disinterested in tuning the f.i., so they dropped a giant bill on me and didn't even bother saving the parts they took off. now i'm not really calling anyone out here. i'm writing a letter to PMO about the carbs and i hope they will be receptive (they didn't resond to my e-mails before) and will at least help me figure out what's wrong... i'm not even going to bother with "the guys"... check with chappy if you want any more on them! (IMG:style_emoticons/default/dry.gif) here's my logic: i have had these carbs feeding FOUR (4) different engines (2- 1.8 liter and now 2- 2056's). i (and no less than 4 other humans) have jetted, mixed, dialed, tuned and massaged them till the cows come home, but they JUST REFUSE RUN SMOOTHLY! worse yet, now i get the same wonkey, popping (from both ends) that i have from each of the 4 tries. literally, the only constant between all of them has been the carbs! whew! thanks for letting me vent. if there's any kind soles who have a set to just let me borrow to get the engine dialed in, i would be entirely indebted. i'd pay for shipping both ways, and even escrow what ever value you think they are worth to prove i'm not going to run away with them i'd be more than happy to do that! meanwhile, i'm composing myself enough to HOPEFULLY get PMO to help me out on this deal before i burn up another fortune in engine work. wish me luck! paul p.s. total miles on 4 engines mentioned: 22,465 This post has been edited by lotus_65: Jun 3 2012, 07:31 AM |
IronHillRestorations |
Jun 4 2012, 01:46 PM
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#2
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I. I. R. C. Group: Members Posts: 6,728 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None |
If these are new carbs, then it's more than likely an issue of the correct combination, or to quote Jake Raby's mantra "it's all in the combo".
If the carbs have the wrong jet/venturi package, they won't run right on any engine. You need to confirm the jetting and venturi size before you do anything else. In addition if they have junk fuel, or contaminated fuel, or trash in the fuel, you'll have trouble. What distributor are you using, and what is the timing set at? From my own experience, and some of the other guys can probably back me up on this; at least 25% of carb problems are really ignition problems, and probably 5% are fuel delivery or contamination problems. Also John is right, there's no "black magic" to tuning carbs. Having the correct venturi and jetting, is much more involved, but it can be simply a matter of getting a couple sets of venturis, jets, and maybe a jet reamer set. |
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