Hi.
I want to install holley 2280 in my sl6 engine.
Please tell me where to connect these vacuums?
2. Canister vacuum
6. Solenoid vacuum
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| holley 2280 installation https://slantsix.org/forum/viewtopic.php?t=42620 |
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| Author: | Rost310 [ Thu Nov 18, 2010 4:37 pm ] |
| Post subject: | holley 2280 installation |
Hi. I want to install holley 2280 in my sl6 engine. Please tell me where to connect these vacuums? 2. Canister vacuum 6. Solenoid vacuum
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| Author: | Reed [ Thu Nov 18, 2010 4:44 pm ] |
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What year and model of vehicle do you have? It might not have a charcoal canister or a solenoid vacuum. |
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| Author: | Rost310 [ Thu Nov 18, 2010 5:04 pm ] |
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dodge dart 1970 I don`t have a charcoal canister. what can I do? |
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| Author: | hellion_locdogg [ Thu Nov 18, 2010 5:14 pm ] |
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Plug it... |
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| Author: | Rost310 [ Thu Nov 18, 2010 5:46 pm ] |
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ok. (worried that affect performance) |
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| Author: | DusterIdiot [ Thu Nov 18, 2010 5:51 pm ] |
| Post subject: | It won't.. |
Quote: worried that affect performance
That won't affect performance, it just is a controlled vacuum leak that helps the late car's emissions system function... plug it and you have no worries...-D.Idiot |
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| Author: | Rost310 [ Thu Nov 18, 2010 6:09 pm ] |
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mmm... you propose to find and install charcoal canister from another car, but can easily cut off this vacuum line ? (sorry for my english) |
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| Author: | hellion_locdogg [ Thu Nov 18, 2010 6:15 pm ] |
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Just plug all the ports that you are not using on the carb, it will not be a problem. |
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| Author: | mopardean [ Fri Nov 19, 2010 7:53 am ] |
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not to hijack anybody's thread but on my holley 2280 the distributor advance vacuum connection on the carb has virtually zero vacuum. Can this be right? In this case is it adviseable to route the distributor vacuum line to another port on the carb that has vacuum like maybe the EGR port ? (i have blocked off the egr on the manifold) i ask this because i have an ongoing engine miss that i just cant nail down. It accelerates fine but idles rough and misses bad at cruising speed and especially when i coast down. Incidentally the carb is new. The engine has only 2000 miles on a full rebuild. |
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| Author: | wjajr [ Fri Nov 19, 2010 12:29 pm ] |
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mopardean: Quote: not to hijack anybody's thread but on my holley 2280 the distributor advance vacuum connection on the carb has virtually zero vacuum. Can this be right?
You will see no vacuum at a ported vacuum tap until the throttle plate has rotated enough to expose its opening to vacuum. So at idle, no vacuum to vacuum advance, until rpm / throttle opening is great enough to expose the little hole located above a closed throttle plate to see vacuum.One should not connect a vacuum advance pod to full time vacuum. This would make setting idle difficult due to timing being too far advanced. There should be no mechanical or vacuum advance when engine is at idle. Not until engine comes off idle should there be any mechanical advance and or vacuum advance occurring. By attaching a vacuum gage to ported vacuum tap one can read at what rpm vacuum will be supplied to the vacuum advance. Also a timing light will show when mechanical advance starts to come on if you disconnect the vacuum advance vacuum line, and plug its tap. |
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| Author: | mopardean [ Fri Nov 19, 2010 2:27 pm ] |
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wjajr, thanks for the pointers. i do not notice any vacuum at the dizzy advance port on the carb either at idle or when the engine is revved with my finger over the opening. but i will check the port with the vaccum guage and also see when the mechanical advance kicks in as you suggest. Thanks again dean |
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| Author: | Reed [ Fri Nov 19, 2010 2:36 pm ] |
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Quote: i do not notice any vacuum at the dizzy advance port on the carb either at idle or when the engine is revved with my finger over the opening.
Your finger is not an accurate vacuum gauge, nor is it sensitive enough to feel the vacuum on a port a small as the vacuum advance port on the carburetor. You must use a true vacuum gauge to detect and measure the vacuum on any carburetor port smaller than the PCV valve port.
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| Author: | mopardean [ Fri Nov 19, 2010 2:40 pm ] |
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agreed. i will check this with a guage. |
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| Author: | trent [ Fri Nov 19, 2010 4:00 pm ] |
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How much Vacuum is normal for revving? |
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| Author: | Wizard [ Fri Nov 19, 2010 4:14 pm ] |
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That's poor statement. What you need to look for: Vacuum amount and type of needle vibration at IDLE. These is very unique and can tell you what item is causing problems. Max vacuum amount & speed of needle motion at throttle snap shut from 2,000rpm helps to show overall health of engine, carb and any remaining leaks (on purpose and any other leaks from wear or things). Vacuum readings is meaningless at any throttle opening, vacuum get lower and lower as throttle opens more, unless there is some vacuum that could point to choking points along the aircleaner/filter dirty/undercarberated etc. There are charts of vacuum reading along with vibration of needle is out there on the internet. Cheers, Wizard |
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