JoeCool Posted January 22, 2015 Report Share Posted January 22, 2015 I'm confused about the ZDDP and catalysts claims. Catalysts have been in place since the 70's. So if the ZDDP was banned for zinc and phosporus being bad for catalytic converters, how many of our vehicles actually NEED it. Also diesel oil will be changing soon if not already because all newer diesel engines are required to use catalysts. :confused: Quote Link to comment
DanielC Posted January 23, 2015 Report Share Posted January 23, 2015 I thought this thread would be done by now. If your engine is in good shape, it does not burn enough oil to poison the catalytic converter. The problem occurs when the engine is worn out, and burns excessive oil. Then there is an issue. The main wear area for an older engine, that needs the ZDDP is the interface between the camshaft, and the lifters. A lot of modern engines use a roller bearing in this area, and there is no longer the wiping contact between two metal surfaces, that needs the ZDDP additive. Quote Link to comment
datzenmike Posted January 23, 2015 Report Share Posted January 23, 2015 Today's catalysts are much different than those in the early 70s. Quote Link to comment
Stoffregen Motorsports Posted January 23, 2015 Report Share Posted January 23, 2015 I thought this thread would be done by now. If your engine is in good shape, it does not burn enough oil to poison the catalytic converter. The problem occurs when the engine is worn out, and burns excessive oil. Then there is an issue. The main wear area for an older engine, that needs the ZDDP is the interface between the camshaft, and the lifters. A lot of modern engines use a roller bearing in this area, and there is no longer the wiping contact between two metal surfaces, that needs the ZDDP additive. The OP is building a new engine so it's a vitally important question. I like it when a thread keeps going. It's a sign that we are interested in it. 2 Quote Link to comment
datzenmike Posted January 23, 2015 Report Share Posted January 23, 2015 The OP is building a new engine so it's a vitally important question. I don't see anywhere where he said he building a new engine. I agree it won't hurt to use it as a good cam lube when rebuilding but just as important to run a good oil with some reasonable level of ZDDP for the long haul too. I've always used it on rebuilds and would like to know what the experts here can add. Thanks. Steve Quote Link to comment
Stoffregen Motorsports Posted January 23, 2015 Report Share Posted January 23, 2015 In the 320 section he has an engine thread. http://community.ratsun.net/topic/64874-mighty-mouse-engine-rebuild-upgrades/ Quote Link to comment
difrangia Posted January 24, 2015 Author Report Share Posted January 24, 2015 I am indeed rebuilding the original E1 for the 'Mighty Mouse' 320. In my opinion the valves had been done at least once over the years but the pan had not been off for half a century. I did need to source another crankshaft (thanks again, Ted). Ended up using new Japanese .060 OS pistons. Had cam reground with .035 added lift and refaced lifters. New valves and guides. I'm currently setting the graphite rope 'dog turd' rear seal in, so crank and pistons will soon be in place. So basically it will be a new engine. Thanks for all the input on this addative issue, guys. It helps me a lot on what course I'll take. Quote Link to comment
Stoffregen Motorsports Posted January 24, 2015 Report Share Posted January 24, 2015 Four or five quarts of oil in a gallon jug Ha! Is this up for debate? 1 Quote Link to comment
datzenmike Posted January 24, 2015 Report Share Posted January 24, 2015 Our gallon is bigger than yours. 4.546 liters to your 3.785 or 20% larger. If I get 33 MPG here that's the same as 27 in the US 1 Quote Link to comment
DanielC Posted January 24, 2015 Report Share Posted January 24, 2015 DanielC, on 20 Jan 2015 - 09:53 AM, said: " Four or five quarts of oil in a gallon jug Ha! Is this up for debate?" Depending on the brand, some of the "gallon" oil that I buy comes in a four (US) quart container, sometimes the container holds five US quarts. When I put dirty oil into the container for recycling, I usually fill it more than it was with new oil. 1 Quote Link to comment
difrangia Posted January 24, 2015 Author Report Share Posted January 24, 2015 Ha! Is this up for debate? One of my uncles was always refering to a 'Blivit'; Ten pounds of shit in a five pound sack. As I got older I came to realize that he he was refering to me ?? 3 Quote Link to comment
Stoffregen Motorsports Posted January 24, 2015 Report Share Posted January 24, 2015 Touche'. Quote Link to comment
JoeCool Posted January 25, 2015 Report Share Posted January 25, 2015 Our gallon is bigger than yours. 4.546 liters to your 3.785 or 20% larger. If I get 33 MPG here that's the same as 27 in the US HUH? MPG? I figured your measurement would be KPG for kilometers per gallon (and the rest of the metric world). They use MILES per gallon up there? Really? Quote Link to comment
Ranman72 Posted January 25, 2015 Report Share Posted January 25, 2015 they sell 1 gallon and 5 quart jugs they are two different measurements of oil if you buy a gallon jug of oil by us standards it is 4 Quarts Quote Link to comment
]2eDeYe Posted January 25, 2015 Report Share Posted January 25, 2015 I'd still rather buy a full case :lol: Quote Link to comment
datzenmike Posted January 25, 2015 Report Share Posted January 25, 2015 HUH? MPG? I figured your measurement would be KPG for kilometers per gallon (and the rest of the metric world). They use MILES per gallon up there? Really? Hell no! I never got used to kph and work everything into MPG. they sell 1 gallon and 5 quart jugs they are two different measurements of oil if you buy a gallon jug of oil by us standards it is 4 Quarts Not exactly but close. A US qt. is 0.946 liters so a US gallon is 3.78 liters close to a 1/4 of a US qt. short. Quote Link to comment
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