Broke into coolant jacket in exhaust port
#3
Banned
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I had that happen to a set of 862 heads, first time working with them.
Turns out ebay has 862 MLS heads for 320 shipped refurbished, and they take your old messed up heads as core in any condition. I needed to do the guides and valve seals anyways so this was perfect, sent them the broken one they didn't care
Turns out ebay has 862 MLS heads for 320 shipped refurbished, and they take your old messed up heads as core in any condition. I needed to do the guides and valve seals anyways so this was perfect, sent them the broken one they didn't care
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
#7
TECH Junkie
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I'm assuming so, because it took only an errant moment & not enough light to clearly see into the runner. You can sense how close you might be by judging the arc of the work, to obtain the proper result, imo...if this makes sense to you.
I was careful to be "successful" on the first port, then made a small clay mold of that first port, where the speed bump was. In subsequent ports of the intake, I would slide in my clay mold, so that the proper shape would be obtained in all ports. This was not exact, I admit, but to my eye, a good result.
I was careful to be "successful" on the first port, then made a small clay mold of that first port, where the speed bump was. In subsequent ports of the intake, I would slide in my clay mold, so that the proper shape would be obtained in all ports. This was not exact, I admit, but to my eye, a good result.
Last edited by gMAG; 01-16-2018 at 10:05 PM.
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#11
TECH Senior Member
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Someone on these forums has said that a good bowl blend is 80%+/- of a good port job. I would not doubt that!
#13
#14
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I had that happen to a set of 862 heads, first time working with them.
Turns out ebay has 862 MLS heads for 320 shipped refurbished, and they take your old messed up heads as core in any condition. I needed to do the guides and valve seals anyways so this was perfect, sent them the broken one they didn't care![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
Turns out ebay has 862 MLS heads for 320 shipped refurbished, and they take your old messed up heads as core in any condition. I needed to do the guides and valve seals anyways so this was perfect, sent them the broken one they didn't care
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
someone somewhere might be getting a set of heads with a aluminum weld tumor glob sticking into the water jacket.
#16
Banned
iTrader: (1)
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1. Ebay: buyer protection AND 10000+ sales 99% positive feedback
2. Proper inspection. L@@K at your refurbished heads and if there is any issue, you can send it right back at their expense.
In my case I asked specifically for MLS heads that hadn't had much if any material removed. They replied "yeah np" and I was a little worried because you know how sometimes they just agree without really knowing what you said... so I sent a followup making sure and the response was kinda like "yeah this isn't our first rodeo" so I just left it at that and got what I wanted
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)