binfordm715 : Now what do I do?! (Holley 1920 rebuild)

Re: Now what do I do?! (Holley 1920 rebuild)
Post by brute4c on May 25, 2006, 10:41am

I think I have a pic somewhere of the cam off the carb...lets see here...yepper...with the linkage arm and C clip...

http://www.m715zone.com/jonmisc/acclink.JPG

Re: Now what do I do?! (Holley 1920 rebuild)
Post by binfordm715 on May 26, 2006, 12:41am

Grrr!

Dropped part of it when I was cleaning it today. Fell to the floor and broke a plastic part. Not that cam part though. Anyway, I don't want to talk about it right now....

Re: Now what do I do?! (Holley 1920 rebuild)
Post by brute4c on May 26, 2006, 9:12am

sorry to hear that Tim....wish I had a parts bucket for those anymore...

Re: Now what do I do?! (Holley 1920 rebuild)
Post by tomkirkman on May 26, 2006, 1:05pm

That's the cam for the accelerator pump diaphram. Without it the engine will bog upon acceleration until engine catches up and pulls more fuel into the intake. The purpose of it is to squirt a little raw gas into the intake so you don't have an overly lean condition when you open the throttle.

The performance difference between an M715 with a good one and a broken one is night and day.

Re: Now what do I do?! (Holley 1920 rebuild)
Post by binfordm715 on May 26, 2006, 1:13pm

Yup. That's about the ONLY thing that went right for me!

Looks like the Forest Service had replaced it recently.

Re: Now what do I do?! (Holley 1920 rebuild)
Post by thetroublemaster on May 26, 2006, 2:50pm

Tim, go to a hobby store and get some thin non gap filling CA glue. I just assembled some stuff with it this weekend and aside from gluing the part to my fingers several times the bond is very very strong. I am sure it would work for you.

Re: Now what do I do?! (Holley 1920 rebuild)
Post by robsgp on May 26, 2006, 3:55pm

Well it's a little clunky... We'll see how it holds up.

http://usera.imagecave.com/robsgp/m715/IMG_0526.JPG

Re: Now what do I do?! (Holley 1920 rebuild)
Post by binfordm715 on May 26, 2006, 6:29pm

Cool fabrication there!

No, Al... I don't think I can glue this piece!

http://img232.imageshack.us/img232/1...920008a1cf.jpg
See the crack in it? Pretty small compared to the giant quarter!

http://img141.imageshack.us/img141/4...920009a2st.jpg


That's the part I dropped.

However, Brandon (rpgdeity) is bailing me out!!!
He swapped in a 2-barrel carburetor on his truck, so I'm going to pick his old 1920 up to use that part. Hopefully I won't drop it when I clean it up first!