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

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.