Melted Holley Site Plugs

[FJ5_440]

The pair I had issues with recently were Holley.  I used to run them in the 80's and never had an issue.  Either the gas, or the plastic the plugs are made from (or both) must have changed since then.

[BB73Challenger]

Ughhh... I have those same sight plugs in 2 different carbs 

Better pull them out - that's why I like this site... better safe than sorry.

[Aracer]

Safety Third!    man, crazy!

[CUDA JAS]

I need to make a correction here.  The plugs I had trouble with were, in fact, Moroso (P/N: 65226) and not the Holley brand, as I stated (in error) above.  Jegs sells 3 different one piece plastic site plugs.  Cheapest are Moroso, then Mr. Gasket, then Holley.  All look similar.  I do have a set of the more expensive Holley's but am reluctant to even try them, as they look very similar to the Moroso's. 

Just wanted to correct my error on the Holley brand.

Oh CRAPPP

I just checked mine and they do not want to come out easily.....I thin I need to try to get them out this weekend, good thing it is supposed to rain all weekend.

[BIGSHCLUNK]

Sorry Im really late with this pic. These are Moroso... been in for 3 yrs.... 
Uploaders full so.. http://s672.photobucket.com/albums/vv82/BIGSHCLUNK/Steering%20Gear%20II/?action=view&current=SteeringGear9020.jpg

[1970 RT Challenger 1970]

I recently purchased some inexpensive plastic site plugs for my Holleys so I could check and adjust the float level.  After around 10 minutes of running the engine and adjusting the floats I removed the plugs.  When I removed them I found they were melted and disintegrated at the end with particulate inside the bowl, a real mess.  Has anyone ever experienced anything like this before?

I've had mine in for 6 years on a Holley Double Pumper that I rebuilt. Never a problem fogging or with the O-Rings. Are you running gas line anti freeze, carb cleaner or Rocket Fuel from the backwoods still! 

The clear plugs come installed on the New Holley Street Avenger Carbs I noticed looking through the Year One Catalog.

[Aracer]

The threads swell.

[BarracudaDave]

I know this is an old post, but I just had this very same thing happen to me.  The plugs were in for less than 24 hours and when I removed them the plastic threads were already starting to melt.
Fuel is Chevron High Test (91 Octane) sold in California.

[cudabob496]

Ive had Holley sight glasses for 15 years, but I can't get them out anymore.
Its like they are glued in.

[73EStroker]

 I check mine by simply taking one plug out a time with engine idling set the level then install the brass plug. Put a small rag below the hole to catch any spillage. No fires in doing this on and off for decades.

[734406pk]

I almost installed a set of these plastic sight plugs to adjust float level on a six pack a while ago and I am glad I didn't. These plugs seem to melt quickly when used on carbs running pump gas with ethanol. If your using race fuel etc no problem. Some people had the threaded end melt off and fall into the float bowl. Imagine installing the plugs and taking a drive to have one leak fuel onto the hot engine? I think there are glass sight plugs out there that would be a better choice.

[cudabob496]

I almost installed a set of these plastic sight plugs to adjust float level on a six pack a while ago and I am glad I didn't. These plugs seem to melt quickly when used on carbs running pump gas with ethanol. If your using race fuel etc no problem. Some people had the threaded end melt off and fall into the float bowl. Imagine installing the plugs and taking a drive to have one leak fuel onto the hot engine? I think there are glass sight plugs out there that would be a better choice.

That ain't the only thing Ethanol is destroying

[734406pk]

That ain't the only thing Ethanol is destroying

Yes sir! The destruction I see makes me sick. Maybe a good idea to start a new topic on this so members will be informed?

[cudabob496]

Yes sir! The destruction I see makes me sick. Maybe a good idea to start a new topic on this so members will be informed?

Here's one

http://www.cuda-challenger.com/cc/index.php?topic=99572.0

[BarracudaDave]

Just a quick update. 
I sent an email to Moroso tech department to inform them of what happened to me when I used their plugs, part no. 65226.  They emailed me back and said "When and where did you purchase these from? We have kept up with different types of fuels over the years and continued to test these. We haven't had any issue to date but I would like to stay on top of this. If you can provide me an invoice/receipt, I should be able to get you out another set."
The invoice I forwarded to them was from JEGS.
A replacement package from Moroso showed up in my mail box today, looks like the same plugs, but this time I will not leave them in overnight, but will make the float adjustment and then remove them and replace with the brass plugs.