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Block filler

7.2K views 13 replies 7 participants last post by  Lobes  
#1 ·
Has anyone mixed Devcon liquid aluminum (F2) with anything else to have more filler successfully?

I've used Hard Blok to fill aluminum blocks with no negatives to date but would like use Devcon because of similar expansion rate as aluminum. The only down fall is it's just so damn expensive for the quantity you get.

Other alternatives for aluminum blocks? Or just stick with the Hard Blok?

Thanks.
 
#3 ·
I have used the Devcon aluminum in a head, we have on made a couple of partial passes so my testing is not complete. My concern is that when we heated the head the epoxy grew at a faster rate than the head. I sanded the deck while the head was @ 200* When the head cooled it was below flush, we did this a couple times making sure it repeated. I filled an iron block with the devcon steel and had the same result. The block make some spooky noises the first time it was heated in the oven, same engine stay tuned I will post results in the future.
 
#4 · (Edited)
I knew a guy once, his sister knew a guy who had a brothers who's uncle sister boyfriend knew a guy who fired a gun once in vietnam.

He said that the hardblock tends to break away from the cylinder wall and it cuases the bore to pinch up where they are filled.

He siad and I qoute " run the devcon in the aluminum blocks" unqoute.

in fact he thinks he might still have pictures of it seperating from the cylinder wall.
 
#5 ·
My biggest beef with Devcon is that "pourable" is very suggestive. It would work so much better if there was a way to slightly thin it.
 
#6 · (Edited)
we have oftentime "poked" the devcon into the difficult locations to attempt to strengthen the CORNERS where we think that there is distortion..
and then after a week of sitting on floor curing.
we will then pour in the "block filler grout"...

devcon is a bit more stiffer and stronger and can bond to the cast iron / aluminum better to achieve the results that I have referred to.....

billyman is as stated in his signature.....a resident a$$hole...
 
#12 ·
I called them Sean but the guy wouldn't disclose on a suitable thinner.

It's a huge pain in the ass to get to level out before it begins to set up--this is with a block vibrator too. I want to experiment a little bit but that's some expensive shit to be wasting.
 
#13 ·
read this,

this is for boats but epoxy is epoxy..lots of info here...

Thinning epoxy means lowering its viscosity. Low viscosity epoxy flows better, is easier to roll or brush, saturates fiberglass fabric quickly, and penetrates more deeply and more easily into porous surfaces like partially rotted wood. There are two methods of temporarily thinning epoxy. One is to heat the mixture and the other is to add solvent to the mix. The goal of both methods is to reduce the epoxy's viscosity. This article explains what happens to West System epoxy when it is thinned either by heating the components or adding solvent to the mixture

http://www.seqair.com/skunkworks/Glues/WestSystem/Thinning/Thinning.html