serious holley carb issue
#29
here's a link to my photobucket where u'll find pix of my rb holley setup so u can see how they do the throttle hookup, omp linkage and the lines to the primary bowl.
http://s83.photobucket.com/albums/j2...cpZZ2QQtppZZ20
http://s83.photobucket.com/albums/j2...cpZZ2QQtppZZ20
#30
your OMP line is set up so much better than what mine is. XLR8 has me pretty set on going premix from now on. I'm going to try to find a better carb, cause right now its running smooth but it has no top end whatsoever. Guess those secondaries had a purpose haha.
#39
well heres an update... my vacuum advance wasnt hooked up so I Td them together and ran a hose to the vacuum fitting that was capped on my intake manifold. Im thinking whoever put the carb on, advanced the timing to compensate. Cause i cant get it to idle under 1k right now.. so im going to put a light on it after work and see what I come up with. Ill try enabling the secondarys after that to see if the sputter it had is gone.
#41
Vac diaphragm is in the mail, I put a suitable light spring in it for you (the all important retaining clip is taped to it and I included the screws since I figure they are likely missing on yours).. Shipping was $10, will take approx 10 days. Cost to my fellow rotary enthusiast for part and shipping, freebie, just follow the guidance and get it working right!
The carb spacer kills the pulse and helps the holley work the way it is designed. You only need a 1/4" open spacer.
The carb spacer kills the pulse and helps the holley work the way it is designed. You only need a 1/4" open spacer.
#42
well heres an update... my vacuum advance wasnt hooked up so I Td them together and ran a hose to the vacuum fitting that was capped on my intake manifold. Im thinking whoever put the carb on, advanced the timing to compensate. Cause i cant get it to idle under 1k right now.. so im going to put a light on it after work and see what I come up with. Ill try enabling the secondarys after that to see if the sputter it had is gone.
#43
Vac diaphragm is in the mail, I put a suitable light spring in it for you (the all important retaining clip is taped to it and I included the screws since I figure they are likely missing on yours).. Shipping was $10, will take approx 10 days. Cost to my fellow rotary enthusiast for part and shipping, freebie, just follow the guidance and get it working right!
The carb spacer kills the pulse and helps the holley work the way it is designed. You only need a 1/4" open spacer.
The carb spacer kills the pulse and helps the holley work the way it is designed. You only need a 1/4" open spacer.
#45
Rotary Freak
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This should help you: http://www.racingbeat.com/manuals/18009%20Holley.pdf
#46
rxtasy3 is right. you are probably getting too much vacuum where you have it hooked up.
This should help you: http://www.racingbeat.com/manuals/18009%20Holley.pdf
This should help you: http://www.racingbeat.com/manuals/18009%20Holley.pdf
Rough idle or pulse - the spacer
High idle - actually put my vacuum where it should be lol
Hesitation and stumble when accelerating - Im betting my float level is way low
No high RPM power (even when the secondarys where intact)- im thinking my float level is doing this too
My next question is will the secondary diaphragm eliminate the need for the mechanical linkage
#47
ur hesitation/stumble on accel is probably a worn cam for the accel pump. the sec diaphragm works the secondaries at a given amount of vac. if the carb has a mechanical linkage then it wasn't vac operated to begin with. usually what ppl do to make them mechanical is to put a screw in it.
#48
ur hesitation/stumble on accel is probably a worn cam for the accel pump. the sec diaphragm works the secondaries at a given amount of vac. if the carb has a mechanical linkage then it wasn't vac operated to begin with. usually what ppl do to make them mechanical is to put a screw in it.
Last edited by FCinWV; 07-07-11 at 11:22 AM.
#49
Lapping = Fapping
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84stock is awesome when it comes to stuff like this. He helped me out with a pulley for my Camden; which works perfectly by the way. It was a -9 and finally made my 5" come alive. The previous pulley was a -7 and was wrong for a 5", but works well on a 7". Anyway it works so well now I'm planning my next engine for the REPU based around how well it works on the test engine in the GLC.
#50
alrighty. I'm so anxious with this thing I went on my lunch break and corrected my vacuum advance.. just so I'm sure.. this is correct right ?
btw rxtasy I watched your short drive video.... mine runs nothing like that. that quick rev you have up into the 7000 area..mine would be struggling to get thru 4500 at a slow lugging pace. Ofcourse I imagine some that that is your lightweight flywheel.
btw rxtasy I watched your short drive video.... mine runs nothing like that. that quick rev you have up into the 7000 area..mine would be struggling to get thru 4500 at a slow lugging pace. Ofcourse I imagine some that that is your lightweight flywheel.
Last edited by FCinWV; 07-07-11 at 12:21 PM.