mopar56
Well-Known Member
When rebuilding a holley 600cfm 1850 and replacing the fuel transfer tube seals the holley kit comes with o-rings and seals, what is better o-rings or the seals? Or dose it matter?
Filling the carb doesn't do much... They are on the pressurized part of the fuel system, outside the float bowls..Ok, I didn't actually see the seals or know what they were for until I was searching the net after, I had only noticed the o rings and used them, I did roll them down the tube but I used some soapy water so they wouldn't pinch, I suppose I could pre fill the bowls with fuel thru the vent tube then tilt the carb back and forth to look for leaks? Failing that, remove and install the other seals.
We're doing carbs here... Not ****....I use spit to lube them up. Always readily available. lol
They worked well for a really long time.Well I think I'll just leave in the o-rings, and see how it goes, worst case I change em out! Confidence is high! Lol
I put them on the tube first, LUBE them with some penetrating oil and they go right in.It is yes, so do you install the seals on the tube and push in or install in the bowls first? If i put on the tube first then they bulge out and don't want to go in the holes in the bowl, if I put them in the bowls first the tube dosnt want to go in even with dishsoap as lube they seem very tight?
Vaseline works great too!I had no idea that they had transfer tube seals. I only remember the o-rings and lubed them with vaseline... no leaks, but that was about 25 years ago.
They're a tight fit. With no lube, they will distort.Ok, thanks, I'll try again tomorrow.
Have you looked into both tube holes in both bowla to confirm there aren't some old o rings or seals stuffed up in them?Update, no way I can get the bowls to seat with those seals, I tried 3 in 1 oil, grease, dish soap, I tried putting the seals on the tube first and pushing in the bowls, then I tried pushing the seals in the bowls first and trying to insert the tube, there is literally a good 1/2 inch of space to cinch up and I'm afraid the fragile aluminum tube will bend, I tried pushing on the carb with my body weight against the carb and the workbench, I actually thought of using a cargo strap to ratchet the bowl to the carb, there is NO way it should be that hard so I just went back to the o- rings, ( new ones ) and it just slipped together. Weird but anyway it's back together, I went through it all again I'll either throw it back on in the spring or I might try it in the next few weeks and just find a nice day to run and tune it, if it don't work I'm done with Holleys and I'll stick with Edelbrock.
Yes, that is what I did today AND previously when I assembled it and installed it, no fuel leaks at all, Just flooding.In post #3 I posted this...
I've rebuilt literally hundreds of 1850's, never had a problem with the O rings...
But there's a trick to installing them..... Don't push them fully on the tube or seat them fully in the cavity... Just barely start them on the tube then insert the tube into the cavity.... That way the O ring rolls due to contact on the inside & outside... If you just fully seat the O ring they often get pinched & leak...
You really should try it....