Keffer inc Posted May 27, 2016 Share Posted May 27, 2016 This morning I took off the valve covers and risers to re-seal the gaskets (clean and apply RTV) and throw it all back together. As I was cleaning the forward valve cover, I saw i had a rubbed spot from the turbo oil supply hose (which has a frayed jacket). In that rub spot is a tiny pin hole. Mack wants $210 and will have to order it (Down time ) so my question is can it be JB welded (Epoxy)? They say the temps for the epoxy can get up to 500 degrees? Is that okay or might the motor get hotter? I'm waiting for a phone call from a friend who can weld aluminum (I think that they are) and will go with that first, 2nd epoxy if you guys agree that would work, and third, spend more money on a new one. Pics are on my facebook page. Andrew Keffer or Keffer Transport Quote Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/ Share on other sites More sharing options...
41chevy Posted May 27, 2016 Share Posted May 27, 2016 Temps are no way ever near 500 at best 1/3 of that 1 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-334703 Share on other sites More sharing options...
Freightrain Posted May 27, 2016 Share Posted May 27, 2016 Water temp only gets 200* or so. If just a pinhole then I would just JB it. Clean it up good, scuff it for some good gripping power, don't let any fall inside as you don't want pieces floating around the valve cover. Make sure to get something to keep that line from rubbing on the JB. 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-334706 Share on other sites More sharing options...
Keffer inc Posted May 27, 2016 Author Share Posted May 27, 2016 10-4. I thought the temp would only be near 200 degrees but I had someone else trying to tell me that it would be hotter. The covers are still off so I can easily JB weld it without the worry of stuff falling. The hole is about a 1/16" hole. You think wrapping the turbo hose in pipe insulation from Home Depot? Quote Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-334708 Share on other sites More sharing options...
Freightrain Posted May 27, 2016 Share Posted May 27, 2016 (edited) Or use a larger sized rubber hose and clamp it on? Or a piece of soft braided fuel line? If you are handy, drill and tap it for a small bolt and lock tite it in? Then you don't have to worry about it, though the bolt head will likely cut through the turbo line? Edited May 27, 2016 by Freightrain 1 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-334713 Share on other sites More sharing options...
j hancock Posted May 27, 2016 Share Posted May 27, 2016 Black RTV would even work as a temporary fix for a 1/16". 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-334743 Share on other sites More sharing options...
hatcity Posted May 28, 2016 Share Posted May 28, 2016 I keep worn out coolant hoses for such reasons. Cut and zip tie 1 Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-334747 Share on other sites More sharing options...
Timmyb Posted May 28, 2016 Share Posted May 28, 2016 There are soldering rods available for aluminium if your after a more permanent fix. Looks easy enough to do from looking at the videos. http://www.alumiweld.com that is one example of them. Quote Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-334769 Share on other sites More sharing options...
thomastractorsvc Posted May 31, 2016 Share Posted May 31, 2016 I know I am late to the party but a sheet metal screw with a rubber washer would work 1 Quote Robert"I reject your reality and substitute my own." Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335025 Share on other sites More sharing options...
carlotpilot Posted May 31, 2016 Share Posted May 31, 2016 On 5/28/2016 at 1:08 AM, Timmyb said: There are soldering rods available for aluminium if your after a more permanent fix. Looks easy enough to do from looking at the videos. http://www.alumiweld.com that is one example of them. tim thanks you may have just answered my search for a repair method for some pot metal trim for my old chrysler Quote Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335035 Share on other sites More sharing options...
41chevy Posted May 31, 2016 Share Posted May 31, 2016 36 minutes ago, carlotpilot said: tim thanks you may have just answered my search for a repair method for some pot metal trim for my old chrysler I You need to be very careful with the soldering rods. The rods melting point is 700 degrees and is extremely close to the pot metal / Mazak melting point.I use Muugy Weld rod it is made for pot metal repair with a melting point of 350 degrees. Strong, easy to blend in and chromes up nice. Did all the pot metal on my 1941 Chevy and a few pieces on my 1970 Hurst Chrysler 300. Paul http://muggyweld.com/pot-metal-repair 2 Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335042 Share on other sites More sharing options...
carlotpilot Posted May 31, 2016 Share Posted May 31, 2016 1 hour ago, 41chevy said: I You need to be very careful with the soldering rods. The rods melting point is 700 degrees and is extremely close to the pot metal / Mazak melting point.I use Muugy Weld rod it is made for pot metal repair with a melting point of 350 degrees. Strong, easy to blend in and chromes up nice. Did all the pot metal on my 1941 Chevy and a few pieces on my 1970 Hurst Chrysler 300. Paul http://muggyweld.com/pot-metal-repair well well here`s one that i had not heard of . seems i learn something new every day thanks paul. i just decided the other day to do the repairs on my trim myself the shops that do this kind of stuff are just ridicuolus price wise Quote Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335053 Share on other sites More sharing options...
41chevy Posted May 31, 2016 Share Posted May 31, 2016 13 hours ago, carlotpilot said: well well here`s one that i had not heard of . seems i learn something new every day thanks paul. i just decided the other day to do the repairs on my trim myself the shops that do this kind of stuff are just ridicuolus price wise Because most all consider pot metal repairs voodoo and black magic. Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335097 Share on other sites More sharing options...
carlotpilot Posted May 31, 2016 Share Posted May 31, 2016 3 hours ago, 41chevy said: Because most all consider pot metal repairs voodoo and black magic. lol well ima gonna put my sorcerrers hat on and go to work 2 Quote Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335104 Share on other sites More sharing options...
Keffer inc Posted June 1, 2016 Author Share Posted June 1, 2016 Thanks everyone. I know i'm late to responding back but I had a buddy weld it with a fat bead so it doesnt happen again. Great Tips! I'll have to remember those. Quote Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335180 Share on other sites More sharing options...
Keffer inc Posted June 1, 2016 Author Share Posted June 1, 2016 On 5/30/2016 at 10:47 PM, 41chevy said: I You need to be very careful with the soldering rods. The rods melting point is 700 degrees and is extremely close to the pot metal / Mazak melting point.I use Muugy Weld rod it is made for pot metal repair with a melting point of 350 degrees. Strong, easy to blend in and chromes up nice. Did all the pot metal on my 1941 Chevy and a few pieces on my 1970 Hurst Chrysler 300. Paul http://muggyweld.com/pot-metal-repair I never knew that existed! I knew about soldering copper plumbing pipes and all, but I watched that video of them repairing the head light bezel, and I'm impressed! Quote Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335181 Share on other sites More sharing options...
41chevy Posted June 1, 2016 Share Posted June 1, 2016 38 minutes ago, Keffer inc said: I never knew that existed! I knew about soldering copper plumbing pipes and all, but I watched that video of them repairing the head light bezel, and I'm impressed! I used a hobby butane pin point torch for better control and bought 1/16 and 1/8th in rods. For my trim parts seemed to work better than the plumbers torch.. Here is the before and after photos of the Flying lady hood ornament before it was plated. I finished it with diffent grit flap wheels and Scotch Brite pads before the plater took over. Paul Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335185 Share on other sites More sharing options...
carlotpilot Posted June 1, 2016 Share Posted June 1, 2016 1 hour ago, 41chevy said: I used a hobby butane pin point torch for better control and bought 1/16 and 1/8th in rods. For my trim parts seemed to work better than the plumbers torch.. Here is the before and after photos of the Flying lady hood ornament before it was plated. I finished it with diffent grit flap wheels and Scotch Brite pads before the plater took over. Paul want a job? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335190 Share on other sites More sharing options...
41chevy Posted June 1, 2016 Share Posted June 1, 2016 3 minutes ago, carlotpilot said: want a job? Took almost 50 hours to save it, cheaper than a $1000. for a repro. I'd work on it for an hour or two in the very early mornings when everyone was asleep. Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335192 Share on other sites More sharing options...
carlotpilot Posted June 2, 2016 Share Posted June 2, 2016 think i need to get some of both kinds of rods i have some heavier alum work to do also. and keffer glad you got your project tended to did`nt mean to hijack your thread Quote Link to comment https://www.bigmacktrucks.com/topic/45401-bet-no-one-has-seen-this-valve-cover-e7-pin-hole/#findComment-335193 Share on other sites More sharing options...
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