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mb911 |
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#1
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914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 7,560 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest ![]() ![]() |
So I am helping a member put brakes on his 914-6 conversion and then put carbs on it. He previously has a poor working sniper setup. It ran ok prior according to him. Then they switched to a 123 dizzy and removed the MSD ignition and then took to a tuner prior to my part. It ran much worse once the 123/MSD removal. The owner decided he was done with his sniper setup and asked me to put carbs on. I did that and for the life of me we can’t get it to run right. Starts pretty easy and idles decent. When I go to throttle up by hand on the cross bar it doesn’t want to accept all the fuel and shoots quite a bit back up through the horns. My suspicion is a major timing issue as in 180 off. The carbs are new and setup up by Dave Chenny so very confident in them. Seeing as the car is 1.5 hours away each visit I am looking for a bit coaching here. What else should I be looking at? The engine is a fresh 2.7 not built by me with about 1000 miles on it.
Help with some ideas please. |
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Rufus |
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#2
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Member ![]() ![]() Group: Members Posts: 314 Joined: 8-April 06 Member No.: 5,840 Region Association: None ![]() ![]() |
It'll idle but run like shit with the dizzy 180 degrees off. Don't ask me how i know ... (IMG:style_emoticons/default/dry.gif) Not sure I understand with the distributor 180* (I assume we’re talking cam / distributor degrees and not engine degrees) out unless there’s something else really out of whack. Ignition “timing” would be before TDC near the end of the exhaust stroke, about where intake valve opens, and valve overlap begins. With both intake & exhaust open, there’s little to no compression. Any left over fuel ignited should be heard in the exhaust. |
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