Block filler: Questions

[PPI Typhoon]

Ok.....so I'm collecting the stuff to send the block off to Duffee, but notice the posts about using block filler before you do the machine work due to expansion.

Questions I have though.......those that have used it.....

1. Hard-Blok?? Is that what most people use?

2. Is it correct to fill it up 30%?? How can you tell? If using Hard-Blok....they sell it for a partial fill only for V8's......would I just use 75% of the material and measure it that way??

3. Living in AZ, is this going to cause cooling issues?? (People have said no, but I'm sure it has a lot to do with how much you fill it up) My Ty runs ridiculously cool right now with a 160-degree t-stat and Ramchargers fans, so I have some room to give if it does heat it up a bit.

Thanks! :tup:

 

[blk00z28]

Re: Block filler: Questions

Direct quote from Ed on somewhat of the same question I asked him a week or so ago.

the only thing you can do to a stock block to make it stronger other than the 4 bolt thing is to fill the block with block filler. this helps compensate for the thinner cylinder walls. but it makes street driving a pia for cooling.

 

[PPI Typhoon]

Re: Block filler: Questions

Direct quote from Ed on somewhat of the same question I asked him a week or so ago.

But this depends on how much he filled it. There have been other people saying they get no higher than 180 degrees......

That's why I'm asking how much to fill it.

 

[93 TY 2185]

Re: Block filler: Questions

But this depends on how much he filled it. There have been other people saying they get no higher than 180 degrees......

That's why I'm asking how much to fill it.

I was told to fill just below the freeze plugs.
HTH

 

[ed hess]

Re: Block filler: Questions

alli said above was what i knew from discussions with the group i deal with locally. Neither my old or new block were filled.

but thinkof it this way. the less you fill it, then the less strenght your adding to the cyl walls. in my case the old motor split thewalls 2inches down from the the deck on ALL 6 CYLINDERS.

so how much to fill it to have cooling for the street vs strengthat the track.

my opinion choose one or the other but i dont think your going to accomplish anything if your trying to do both...

needless to say we were literally pulling the top half of the block apart.

get a bowtie block and be done with it!

ed

 

[Timbo]

Re: Block filler: Questions

get a bowtie block and be done with it!

There is a slight cost difference between block filler and a bowtie block.
My block has block filler, and with twin electric fans, it stays pretty cool, unfortunately, I've never driven it in AZ temps, and I couldn't tell you how much block filler was used, so I guess that's not much help.

 

[PPI Typhoon]

Re: Block filler: Questions

I was told to fill just below the freeze plugs.
HTH

So I would just pop the freeze plug out and check it that way?