346 porting (first time)

[psuiewalsh]

Hard to tell from the pictures, are you using solid solder instead of rosin core? That would make it harder to squish.

 

[paragonbuilder]

Hard to tell from the pictures, are you using solid solder instead of rosin core? That would make it harder to squish.

I'm not sure. But good chance it's solid. I need to get some different sizes or find some plastiguage.


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[Tor R]

I'm not sure. But good chance it's solid. I need to get some different sizes or find some plastiguage.


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i bought plastigauge through ebay, but I would think they are avaible on amazon.
I am almost empty so I need to get some also

I also want to go in an eletrican shop and see if they have thin tin, just for testing

 

[psuiewalsh]

Napa carries plasti gauge. We use it on bearing clearances. Not sure if you can do it with one range or two .007" to .020" and >.020"

 

[huskihl]

If you're using the small tube of coiled up electrical solder, it's rosin core. Should be .037 or .039". Can't remember off hand. I roll the flywheel back and forth maybe 10 times til I can't feel it hit the squish band

 

[drf256]

The plastigauge is relatively pricy stuff. The one I bought crumbles easily. It may be very old.

You can buy .023 solder on Amazon too.

Dan, you gotta sand out that band or make a gasket with some shim material. I have brass shim material I bought off of eBay and would be glad to mail you a piece. Just triple check all of your squish measurements.

I think I have .001-.015 here. I'd just need the max width and length of the piece you'd need, and the thickness you'd like.

A beer can is usually .0035

 

[mdavlee]

I bought the yellow from oreilly. It will read down to .010" or real close from their website. It's around .035" thick new. It was about $2 a stick or so when I bought the last bunch.

 

[paragonbuilder]

I think I'm going to try to sand the squish. It will help raise compression a bit. If Mike is right and I'm closer to .010 I've got a bit to take out with sand paper. But that's ok. It's good experience!


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[mdavlee]

I don't know of anything else that's the same bore size to use to sand on it with.

 

[paragonbuilder]

I can make a wooden mandrel.


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[Tor R]

almost empty of plastigauge, figured out I should try something else.
50 m 0,6mm

 

[psuiewalsh]

Looks like that is around .023" should be good for final squish

 

[paragonbuilder]

Just picked this up. I should be good now.


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[beaglebriar]

I think ideally you would want rosin core because it is softer but that might fine. The diameter is good.

 

[paragonbuilder]

Yeah they only had .032 in rosin core which is what I had.


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[paragonbuilder]

So I used 3m spray glue and 80 grit sandpaper on the aftermarket prison I had.

I just used a pair of pliers to hold and spin it.

It really didn't take that long. Only took 3 or 4 pieces.

Close enough for me. Do I need to sand smoother with lower grit? Or does it matter?



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[Tor R]

There is many ways to Rome!!!
Nice work and clever idea.

 

[paragonbuilder]

There is many ways to Rome!!!
Nice work and clever idea.

Actually Mike lee suggested it earlier. I was going to make a wooden mandrill today but didn't get to it.


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[Tor R]

I think I need to try the David Yound metode and this one on 254

 

[paragonbuilder]

I think I need to try the David Yound metode and this one on 254

Since I cut my squish I need to remeasure and recalculate. I'll get to it soon.


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