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Post by oldgeek on Apr 8, 2019 5:40:56 GMT -5
If the bond is done cold,when the cases heat up they'll expand a few thou thus breaking that bond..Ya got a way to heat them to a contant temp of 200-250 degrees F till the glue sets?? I'll just pop the cases in the oven along with the wifes casserole!  Is this verified or theory? I use thermal expansion to break bonds at work on occasion, so I can see it being a problem. Three different materials, all with different expansion rates. (aluminium,steel,glue) Maybe I should order some .001 shim stock instead.  |
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Post by 190mech on Apr 8, 2019 10:49:28 GMT -5
We all need access to an old oven for engine baking..That casserole may have a 90 weight gear oil taste!
I figure 200F for crankcase running temps but have not verified that..A metal shim would be the best,but likely the hardest to fit!
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Post by ryan_ott on Apr 8, 2019 11:20:40 GMT -5
My experience that I just had... Jb in the transfers wasn’t curing (cold temperature) so I placed the cases on top of a radiator heater for 24-36 hrs, when leak tested the cases were still warm and passed just fine. Then I was having issues with tuning when it ate the reed. Leak checked again both sides were leaking. So maybe heat the cases to get everything in place then let cool to cure. Or shim material. But 2T’s are so simple.
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Post by oldgeek on Apr 8, 2019 12:29:40 GMT -5
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Post by ryan_ott on Apr 8, 2019 12:51:42 GMT -5
Did you check eBay? There seems to be some decent prices there.
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Post by oldgeek on Apr 8, 2019 15:28:29 GMT -5
Did you check eBay? There seems to be some decent prices there. I did not see much different on feebay. However Mcmaster Carr looks better, but I dont know about shipping yet. |
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Post by oldgeek on Apr 8, 2019 20:33:33 GMT -5
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Post by Lucass2T on Apr 9, 2019 5:57:49 GMT -5
My experience that I just had... Jb in the transfers wasn’t curing (cold temperature) so I placed the cases on top of a radiator heater for 24-36 hrs, when leak tested the cases were still warm and passed just fine. Then I was having issues with tuning when it ate the reed. Leak checked again both sides were leaking. So maybe heat the cases to get everything in place then let cool to cure. Or shim material. But 2T’s are so simple. Have had jb in the 70's transfers for years. No problems whatsoever. Didn't really took any special heat related measures to make it work. I did apply it to room temp cases and let it cure at room temp. I also dimpled the area's with a little burr to make it stick better. Also cleaned and degreased it very very thouroghly. |
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Post by 90GTVert on Apr 9, 2019 7:05:27 GMT -5
I haven't had much trouble with room temp application and curing of JB for transfers. I have heated it with a heat gun just to make sure it runs where it needs to before, but no sustained heat. I had a go-round with it last year where I got a leak and it was a pain to get it sealed. Since then, I think I will try to use acetone before applying the JB to make sure everything is clean. That was what seemed to tip it over the edge to finally seal my leak after multiple attempts. Most of the time before that I used brake parts cleaner / alcohol. I also used JB in the syringe instead of dual tubes last time. Makes it quick and easy to get a good mix ratio.
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Post by ryan_ott on Apr 9, 2019 11:36:30 GMT -5
I’ve never had issues with it before but it’s usually at a decent temperature, I think the garage was in the 30’s in this case and I always clean with acetone or alcohol. I was just putting my 2 cents in about the expansion.
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Post by oldgeek on Apr 15, 2019 19:21:49 GMT -5
Still waiting on shim stock. I should have just ordered the $40 assortment, it would have been here already. Trying to save a buck sucks. |
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Post by ryan_ott on Apr 15, 2019 19:29:24 GMT -5
There seems to be a run of slow shipping going on lately, I’ve got something that was due here last Wednesday... still waiting.
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Post by oldgeek on Apr 16, 2019 15:08:16 GMT -5
Still waiting on shim stock. I should have just ordered the $40 assortment, it would have been here already. Trying to save a buck sucks. Shim stock came today. Wrong thickness (.01 instead of .001) And they sent only 1 instead of a box of 12 as advertised. Now they expect me to pay return shipping AND 20% restocking fee. Never again will I buy from an amazon seller. From now on I will buy only if it comes directly from amazon. |
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Post by ryan_ott on Apr 16, 2019 16:09:14 GMT -5
That sucks, would .0015 work? I’ll send you this one.  |
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Post by oldgeek on Apr 16, 2019 16:17:52 GMT -5
That sucks, would .0015 work? I’ll send you this one. Thanks, but it pissed me off enough to just buy the $50 assortment that will be here Thursday. DONE |
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