My block surface was just resurfaced very smooth but there are still some slight scratches from previous decking. I'd like to use a Nippon mls and think this Hylomar product may be a better choice over the commonly used copper spray.

i like to use Hondabond



i have been doing it like that for years. something an engine builder had told me (think maybe i seen Larry at Endyn post something?). had several others that say they do the same.

i dont like the copper spray, seen it make a mess in a cooling system, and it pissed me off.


i have also put headgaskets on virgin at others request. and never really had issues that didnt involve a slightly warped head to begin with.


edit: btw, that is a super thin layer. you probably dont want that squeezing out into the oil drain passages.

Does Honda bond dry like glue?

Wtf is Honda bond?

Just like yamabond only for Honda.

Quoting tektic:
Does Honda bond dry like glue?



no, it dries to a rubber.

There are two kinds, be sure it's the HT as shown the pics. The other stuff will run like goo at engine temp. I don't even know why they make it.

Also Honda Ultra Flange II is similiar but has better sealing capabilities, if used just right. Comes in a cheese can so it's easier to handle.

Like mentioned, use only a minimal layer on HGs due to squishing out into ports and drains. I personally don't like it and it makes me nervous, but I've heard and seen it done lots of times.

I've used this a lot and it works damn good. Smells like wet cardboard when used. Good example is a buddy of mine blew his HG on his 420A Turbo neon at the track. Coolant was a stream out the gasket. He had a can of this, so we pulled the head at the track, wiped it all down, sprayed this on and put it back together. Damn thing stopped leaking and drove 40 miles back the shop with no leak. (we still fixed it right after that)

Can you really put the word Mopar on a can that also contains the phrase "There's no substitute for quality"? /ubbthreads/images/graemlins/rofl.gif

So what do you guys think of the updated pics in the first post?

I just moved the block into my basement and by handling it and a bunch of black crumbs started falling out. Spent the last three hours grinding and sanding flashing out of the block. What a mess. I sprayed with brake cleaner and ran some brushes through it but I think I'm going to have it jet washed again tomorrow.

was thinking about the Mopar sealer but forgot what they called it. had people swear by that stuff.


I used the Honda Ultra-flangeII on my oil pan on the Galant. good stuff also.

Yeah, Honda bond HT is the sh*t, but unfortunately it's not under production anymore. With good luck you can find old stock somewhere. I was working in a motorcycle shop for over 10 years(Honda..) and this was the only thing we used. Can be used even to surfaces without paper gasket.

Kent makes something similar, called Sili-gasket. We used that when Honda stopped shipping the Bond.

really? we have 5 of those on the shelf. computer days Portland warehouse has a bunch. you guys are getting boned.

Quoting GSTwithPSI:
Can you really put the word Mopar on a can that also contains the phrase "There's no substitute for quality"? /ubbthreads/images/graemlins/rofl.gif



That's cause Mopar has someone make the sealant. The stuff is awesome. I haven't used it in a couple years and I think they have a new can design, so not sure if it's the same formula or not.

He is in Finland, btw.

ahh, did not notice that.

All this hon/ yam bond you are talking about is made by click It's a bad idea to be putting anything on those surfaces in the block pics above. Whoever is teaching that practice needs to be spanked.

Quoting iceman69510:
He is in Finland, btw.



Could be also because of that. Some other Honda chemicals and all of the oils were also dropped some years ago, guess something to do with eu-restrictions. Then they started a new oil line locally in eu. But we were told that production had stopped for honda bond /ubbthreads/images/graemlins/mad.gif.

Quoting G:
All this hon/ yam bond you are talking about is made by click It's a bad idea to be putting anything on those surfaces in the block pics above. Whoever is teaching that practice needs to be spanked.



I didn't ask about Hondabond. Hondabond is not an option. It is not going on my head gasket. Don't get me wrong it has it's place. It would probably work well on the valve cover gasket, but I digress.

The product I originally asked about is aerosol, designed for head gaskets, and designed not to dry. I guess no one here has any experience with it. It is made in the UK as far as I know. I saw some positive but brief mentions of it on other Mitsubishi boards but mostly over seas.

I did however ask for opinions on the surface finish of my block. The guy who did it says the MLS will seal fine clean and dry but I'd like a second opinion before I bolt down a new gasket dry again.

I have yet to see a comment on the surface finish.

I use Permatex copper spray (readily available from your favorite local auto-parts store) on MLS HGs and have done so for years in cars that see 40psi+ boost levels with excellent results.