The person at Home Depot that told you that was both right and wrong. For *normal* soldering, even with MAPP gas, the temperatures wo not be hot enough to harm anything if you do it correctly. If, however, you point the heat at the main body of the valve and leave it there long enough, you CAN get it hot enough to cause damage to the seals, but you almost have to TRY to do that. When silver soldering or brazing, you do indeed run into temperatures that ARE harmful to the seals, but that is generally done with an Oxy-Acc set up. When I do that type of work, I remove all the parts from the main body of the valve, braze the body, and only after it cools do I put the *innards* back in. For normal soldering though, it is not necessary, so what the guy said is true in that you CAN hurt the valve, but like I said, you half to be almost TRYING to, or not paying attention at any rate. Al
1. 87 Camaro, 700-R4 Automatic Transmission Problem.?
Most anything inside the automatic transmissions require an overhaul. because everything comes out the front with the exception of the filter and valve body. Back to answer # 1 was there stuff in the pan and did it smell burnt and black ? If you are lucky the TV (throttle cable)cable is broken . pull on the cable at the throttle body and see that is ok. The "sludge will be throughout the trans. tourque convertor and cooler this could be stopping things up and sticking valves. I would say at a minimum a flush is needed but I personally wouldn;t hold my breath that that will cure it. The 700-R-4 's are somewhat week in several areas
2. how to just valves on a 52 ferguson 30 tractor??
confusing issue. look into over google or bing. this may help!
3. Capsule versus metallic sprinklers
Your reasoning is completely off-base. I've been in a building during a sprinkler activation (due to mechanical violence to a capsule-type head) and only that head went off. (Deluge systems used to protect extreme hazards use open heads that have no capsule or metal strip at all.)The "automatic overpressure pump" you mention is likely actually a fire pump used in tall buildings to make sure that the standpipes and sprinkler systems have enough pressure, as the city water pressure is not high enough to get large volumes of water to the tops of skyscrapers. Even then though, the pressure generated by these pumps is limited by reducing valves in order to protect not only sprinkler heads, but firefighters who are using lines off the standpipe system -- this was demonstrated dramatically when some of these valves were found failed (see document p.10, PDF p.20) by firefighters battling the legendary First Interstate Bank high-rise fire in LA. In short -- no normal building situtation will expose a sprinkler head to pressures above the typical 175 psi rating. The city does not supply water at that high of a pressure for obvious reasons (faucets do not like 175 psi any more than sprinkler heads do!), and fire pump systems in high-rises have reducing valves going out from the main riser to each floor's sprinkler trunk to keep the fire pump from damaging the system inadvertently
4. do hot water heaters have water shut off valves?
when I install a hot water tank I always make sure there is a shut off valve on the main line of the water system and also I make sure there is one on the line leading out from the tank
5. small block chevy smokes out the exhaust,what do you think?
It's 100% for sure not the valve seals or guides as they will cause smoking more on 1st start up. You said you built many engines as a professional, not to insult you but if you are a professional then why didnt you do or list the cranking compression psi on all 8 cyl and the leakdown % of all 8 cyl. This would deal you dead on where and what the prob is. Any time theres a prob the 1st 4 tools I break out is the timing light, vac gauge, compression gauge and leak down tester. With the use of those you can find any prob from valve seals, to rings, to valves, to head gasket, etc with out having to take any parts off to inspect It could be a bad ring, bad head gasket, blow by, botched bore/hone job, botched ring install. Theres alot of things to cause it. Need more info to narrow it down. What color is the smoke? Does it smoke more on accel or decell? What about if you just idle? How long has the engine been sitting since it was ran in the past? If its been sitting awhile it's possible that the bores glazed, rusted, rings stuck, etc and one cracked on 1st fire up due to improper startup/"break in" How's the pcv valve? It could be pulling oil through the pcv valv, through hoise and into carb What about the transmission vac mod valve? If auto trans the vac mod valve could have blown and that lets ATF into the intake and will smoke white smoke like crazy out the pipes