Glyptal Red

[#41]

I changed an intake the other day and re-found that old glistening Glyptal Red valley staring me in the face. I forgot all about that stuff. This is in a .060 over 68 440 HP short block that I got for $100 many years ago. I just put some heads on it and dropped it in a car and still run it today.

It leads me to a curious question - does anyone use this stuff anymore? It seems that the debate over its effectiveness was always a topic of discussion.

 

[oldbee]

Lol, don’t know, but I still have 1 full can in garage. Block has to be super clean beforehand. Maybe “dvw” or others will chime in.

 

[gtx6970]

Was put in mine many years ago.

If i was to redo the engine, I'll put it back in

 

[YY1]

There's been a resurgence as of the last several years.

 

[YY1]

I've never used it.

What's it supposed to do?

I've never heard.

Seems like it might flake off and get into the oil pump.

 

[padam]

One of the shops in canton still recommends it.

 

[snakeoil24]

It works great on a used block which is throughly cleaned helps alot to take a propane tourch to the block to draw any oils and moisture from block prior to application. I've also used Dupont 2 part Imron fuel tank paint.

 

[3sloppydogs]

Yup still have some and still use it

 

[RJRENTON]

I've never used it.

What's it supposed to do?

I've never heard.

Seems like it might flake off and get into the oil pump.

Glyptal was developed years ago by General Electric as a brush on or dipped INSULATING COMPOUND for electric motor windings, to provide an additional insulating media and to prevent moisture infiltration on the windings, which can cause a short to ground. This is in addition to the mechanical insulsting papers and compounds used (the Formvar coating on the wires by the wire producer). Its generally used on engines to act as a rust inhibitor/moisture barrier on internal areas, like the lifter gallery or block passages, to prevent rust.......
BOB RENTON

 

[MarPar]

@zyzzyx

 

[HEMIB]

Still use it surface must be clean before application never had it flake

 

[beanhead]

Glyptal was developed years ago by General Electric as a brush on or dipped INSULATING COMPOUND for electric motor windings, to provide an additional insulating media and to prevent moisture infiltration on the windings, which can cause a short to ground. This is in addition to the mechanical insulsting papers and compounds used (the Formvar coating on the wires by the wire producer). Its generally used on engines to act as a rust inhibitor/moisture barrier on internal areas, like the lifter gallery or block passages, to prevent rust.......
BOB RENTON

Yep.
Besides the rust-inhibiting it's main use in engines was to promote easier oil drainback down to the pan.
Several of my industrial customers still use it (or a variant of it) to protect their portable pump motors in acidic/corrosive environments.

 

[Mopars & Missiles]

Reduces surface tension to improve oil drainback to the crankcase is what I've always heard, but then what do I know, I'm not the resident expert here.

 

[beanhead]

Still use it surface must be clean before application never had it flake

View attachment 1697863

Yeah when applied properly, that **** doesn't come off.....

 

[Mopars & Missiles]

Lol, don’t know, but I still have 1 full can in garage. Block has to be super clean beforehand. Maybe “dvw” or others will chime in.

Yep, I've got a full unopened quart in the shop too!

 

[#41]

Yeah when applied properly, that **** doesn't come off.....

No doubt. Whomever came before me must have prepped it right. 30+ years soaked in oil and all those heat cycles over the miles and it still looks brand new.

 

[lewtot184]

Back in the day we used red rustoleum primer. One of the main purpose was seal any silicone (sand) that remained in the porosity of the cast iron; especially with green blocks and heads.

 

[Paul_B]

I have it in my 528 hemi. Came highly recommended by the engine shop that did my machine work.

 

[HEMIB]

Also contain,s antifungicide & Rodent deterrent we used to use it on electrical motors to stop mice & rats eating the varnish on the windings + stop mould growing also comes in black

 

[R413]

My machinist says to only use it on serious race engine with high RPM. A mild engine at 6500 RPM won't need it. He emphasized the need for ultra clean or it will come off.

He races a 180 MPH super comp vehicle.