|
Hi .. im just about ready to reassemble my engine and i ran out of RTV black ( i use around the dowel pins , around the legs of the housings and the rear stat gear flange ) ... i went to the store and got this : http://www.autobarn.com.au/AB_images...1197430262.jpg http://www.permatex.com/products/Aut...sket_Maker.htm OEM specified. Highest operating temperatures for 4-cylinder, turbocharged or high-performance engines. The most advanced, high temp RTV silicone gasket available. Sensor-safe, low odor, noncorrosive. Superior adhesion. Three times more oil resistant than conventional silicones; eight times more flexible than cut gaskets. Temperature range -75°F to 700°F (-59°C to 371°C) intermittent; resists auto and shop fluids and vibration. i was simply wondering ... is this somehow better that what i have always used for the coolant seals grooves? ??? which is of course : http://www.midwayautosupply.com/imag.../PTX-85249.jpg http://www.permatex.com/products/Aut...ge_Sealant.htm This non-chlorinated gasketing and sealing compound has been specially formulated to be non-setting and non-hardening at elevated temperatures. It withstands rapid changes in temperature and remains flexible and tacky even at high temperatures, allowing repeated disassembly and reassembly in high performance applications. This no-run formula seals surface imperfections on machined flanges and is vibration resistant. Temperature range of -60°F to +500°F (-50°C to +260°C); resists engine fluids, including water, coolant, gasoline, lubricating oils, kerosene and some refrigerants. Also possesses dust and moisture proofing properties. the ULTRA COPPER seems to share all the bells and whistles with the RACING BLUE .. but seems to withstand higher temp : COPPER : 700 F vs. BLUE 500F will this seal small imperfections in used plates/housings as well as hylomar blue ? i have both handy ( couple of tubes ) .... which would be better for resealing an engine : coolant groves ( using Teflon encapsulated inner coolant rings ) rotor housing legs dowel pin areas rear stat gear flange .. etc front cover etc also i dont want to use it on the oil pan area thx for reading http://www.rx7club.com/images/smilies/icon_tup.gif |
Originally Posted by David0ff' post='924559' date='Jul 20 2009, 06:13 AM
Hi .. im just about ready to reassemble my engine and i ran out of RTV black ( i use around the dowel pins , around the legs of the housings and the rear stat gear flange ) ... i went to the store and got this : permatex.com/products/Automotive/automotive_gasketing/gasket_makers/auto_Permatex_Ultra_Copper_Maximum_Temperature_RTV _Silicone_Gasket_Maker. OEM specified. Highest operating temperatures for 4-cylinder, turbocharged or high-performance engines. The most advanced, high temp RTV silicone gasket available. Sensor-safe, low odor, noncorrosive. Superior adhesion. Three times more oil resistant than conventional silicones; eight times more flexible than cut gaskets. Temperature range -75°F to 700°F (-59°C to 371°C) intermittent; resists auto and shop fluids and vibration. I was simply wondering ... is this somehow better that what i have always used for the coolant seals grooves? ??? which is of course : Permatex_Hylomar_Universal_Blue_Racing_Formula_Gas ket_Dressing_Flange_Sealant.ht m"]http://www.permatex.com/products/Aut...ge_Sealant. This non-chlorinated gasketing and sealing compound has been specially formulated to be non-setting and non-hardening at elevated temperatures. It withstands rapid changes in temperature and remains flexible and tacky even at high temperatures, allowing repeated disassembly and reassembly in high performance applications. This no-run formula seals surface imperfections on machined flanges and is vibration resistant. Temperature range of -60°F to +500°F (-50°C to +260°C); resists engine fluids, including water, coolant, gasoline, lubricating oils, kerosene and some refrigerants. Also possesses dust and moisture proofing properties. the ULTRA COPPER seems to share all the bells and whistles with the RACING BLUE .. but seems to withstand higher temp : COPPER : 700 F vs. BLUE 500F will this seal small imperfections in used plates/housings as well as hylomar blue ? i have both handy ( couple of tubes ) .... which would be better for resealing an engine : coolant groves ( using Teflon encapsulated inner coolant rings ) rotor housing legs dowel pin areas rear stat gear flange .. etc front cover etc also i dont want to use it on the oil pan area thx for reading The temperature ratings are probably Bogus. None of the aluminum you will seal with this stuff will get anything close to that hot. Both seal well on flat stuff. So, the cost is probably the driver. I use 100% GE silicone tub and tile caulk in a caulking gun. Cheap in that size. Works great. Gells up quick. Available everywhere. I used both on gear sections on Hewland transmissions where the trans ratios might be changed three times on one day. Both work fine. I have used silicone for the exhaust gasket header flange face for years. Works great never leaks. I never tried Hylomar in that application. Looks a bit too thin for that. In almost every case, 99% of the sealant applied will be squished out. So go easy on application of either choice. Lynn E. Hanover Race car glued together with Silicone. |
Lynn, what type of silicone did you use on the exhaust flanges?
Im getting tired of paying $10 for a new cardboard gasket everytime I take the manifold off. |
Originally Posted by shainiac' post='924679' date='Jul 24 2009, 11:42 AM
Lynn, what type of silicone did you use on the exhaust flanges?
Im getting tired of paying $10 for a new cardboard gasket everytime I take the manifold off. I use 100% GE tub and tile caulk. A thick bead just before the header goes on. Keep the bead 3/4" out from the runner as silicone may extrude into the port. On a race car this is a low pressure area, so a leak will just let in cool air. No gasket is used. Lynn E. Hanover |
| All times are GMT -5. The time now is 08:14 PM. |
© 2024 MH Sub I, LLC dba Internet Brands