 Poor and crummy low end, under 2500 rpm |
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| Hammy |
 Dec 30 2006, 01:16 AM
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#1
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mr. Wonderful  Group: Members Posts: 1,827 Joined: 20-October 04 From: Columbia, CA./ Tuolumne Member No.: 2,978 Region Association: Northern California  |
I'm suffering from poor low end perfomance. Anything from idle to about 2500-2800 rpm feels gutless and bogged down. So this makes driving around town and driving off from a complete stop rather difficult. But at around 3k to 5k it pulls strong.
Is this a dizzy/timing problem? Not sure what dizzy it is.... recent tune up on ignition (points, cap) though. I have a spare Pertronix laying around from my old engine. Think it'll help? I know all about them blowing up with ignition left on. Just wondering if it's worth the try. This is a carbed 1.7. Thanks |
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| Twystd1 |
Dec 30 2006, 03:21 AM
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You don't want to know... really..... Group: Members Posts: 2,515 Joined: 12-September 04 From: Newport Beach, California Member No.: 2,743 |
Hammy,
Is this a NEW problem???? Or has this been happening for a while??? Did anything happen to precipitate this? Is this a NEW engine to you???? Have you done anything differant to the engine lately???? Did this come on slowly or it just started happening quickly? (Instantly?) Give us some more data....... Wild guess without near enough information is: Timing/points/secondary ignition, Or sumpin ain't right with your carbs. I sniff sumpin with the spark/ignition issues.. Give us the data...!!!!!!!!!! And we help ya giterdone... C |
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| Hammy |
Dec 30 2006, 03:34 AM
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#3
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mr. Wonderful Group: Members Posts: 1,827 Joined: 20-October 04 From: Columbia, CA./ Tuolumne Member No.: 2,978 Region Association: Northern California |
QUOTE(Twystd1 @ Dec 30 2006, 01:21 AM)  Hammy, Is this a NEW problem???? Or has this been happening for a while??? Did anything happen to precipitate this? Is this a NEW engine to you???? Have you done anything differant to the engine lately???? Did this come on slowly or it just started happening quickly? (Instantly?) Give us some more data....... Wild guess without near enough information is: Timing/points/secondary ignition, Or sumpin ain't right with your carbs. I sniff sumpin with the spark/ignition issues.. Give us the data...!!!!!!!!!! And we help ya giterdone... C Clayton. Yes it's somewhat new to me but it's always acted like this. I just had it tuned up and it's running better than ever, except for the low end thing. There's another thing. Can't believe I didn't remember this until now. On one of the carbs the butterflies don't close completely, they're still slightly open at idle. So a lot of the time the idle floats up at about 1200-1300 rpm. It seemed like a minor problem to me so I didn't invest any more into it. |
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Posts in this topic
Hammy Poor and crummy low end Dec 30 2006, 01:16 AM
Rotten Robby
I'm suffering from poor low end perfomance. A... Dec 30 2006, 01:19 AM Aaron Cox carbs? - what jets? what motor size? what venturis... Dec 30 2006, 01:20 AM messix points and condenser!
while your at it pull th... Dec 30 2006, 02:13 AM Hammy Dual 40 Webers.....
1.7 engine. hydro lifters. G... Dec 30 2006, 02:35 AM rhodyguy check the front 2 barrels of the carbs for unequal... Dec 30 2006, 10:43 AM
Hammy
check the front 2 barrels of the carbs for unequa... Dec 30 2006, 04:13 PM Andyrew What is your timing set at?
What new parts are on... Dec 30 2006, 04:17 PM Twystd1 Man,,,
I wish I could go to Modesto..
And start... Dec 31 2006, 12:19 AM Hammy Andy, not sure on timing since I didn't set it... Dec 31 2006, 12:37 AM Twystd1 FIRST...
Go to www.redlineweber.com and start rea... Dec 31 2006, 01:14 AM Twystd1 That sticky or "out of sync" butterfly m... Dec 31 2006, 01:25 AM Hammy Thanks everyone.
And thanks Clayton. You've a... Dec 31 2006, 04:24 AM Paul Illick If one of the butterflies isn't closing comple... Dec 31 2006, 06:32 AM rhodyguy quick check. source a STE and determine if one car... Dec 31 2006, 11:29 AM |
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