DuRRk Posted October 8, 2007 Share Posted October 8, 2007 I recently fitt a new crower 'torque' camshaft with 'rhoads bleed-down' lifters, results where amazing, a whole lot of extra torque low down! Now recently the engine ticks a little, only on the cold start, and its difficult to hear, it looks like the lifters have to fill up with oil again. Is this sounding familliar to others? Do others have experiences with the 'rhoads bleed down' lifters? http://www.v8tuner.co.uk/ It doesn't look too harmfull to me, or should I change the oil type? I use 15 W40 mineral oil now, it is should be a perfect oil for the engine according to the books. anyone ideas or tips? thanx, Durk Range Rover V8 high compression 9:35:1, 2 strombergs, on lpg Quote Link to comment Share on other sites More sharing options...
paintman Posted October 8, 2007 Share Posted October 8, 2007 You might find this link of interest. It comments on the low speed ticking problem with this type of lifter. http://patentstorm.us/patents/7131411-description.html Quote Link to comment Share on other sites More sharing options...
ThreeSheds Posted October 9, 2007 Share Posted October 9, 2007 You might find this link of interest. It comments on the low speed ticking problem with this type of lifter.http://patentstorm.us/patents/7131411-description.html Ve-e-ery interesting.... So my sh*gged lifters will improve my low-down torque! :D :D Now I have an excuse for having an engine that sound like someone pouring ball-bearings onto a plate Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted October 9, 2007 Share Posted October 9, 2007 Ve-e-ery interesting....So my sh*gged lifters will improve my low-down torque! :D :D Now I have an excuse for having an engine that sound like someone pouring ball-bearings onto a plate I have rhodes bleed down lidfters in the eales - 'tic'k a bit for first start up - say 1 min or so then all's quiet Nige Quote Link to comment Share on other sites More sharing options...
Jon White Posted October 9, 2007 Share Posted October 9, 2007 I always thought V8's should be run on 20/50 mineral as the modern oils are far too thin for them. Jon Quote Link to comment Share on other sites More sharing options...
q-rover Posted October 9, 2007 Share Posted October 9, 2007 I run 5W-50 fully synthetic. An oils viscosity has nothing to do with whether it is mineral or synthetic. In fact synthetic oil still comes from long dead dinosaurs, it's just more refined and cleaner. Quote Link to comment Share on other sites More sharing options...
DEANO3528 Posted October 9, 2007 Share Posted October 9, 2007 5-50! I bet that old V8 thinks it's running water through the sump Quote Link to comment Share on other sites More sharing options...
q-rover Posted October 9, 2007 Share Posted October 9, 2007 :blink: Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted October 10, 2007 Share Posted October 10, 2007 Duckhams Q-Grade 'green' 20w50 I find to be the best all-rounder for my older engines...... 5w50? I guess this V8 is newly rebuilt..... Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted October 10, 2007 Share Posted October 10, 2007 20/50 is the safe bet, but if you read Ian's rather excellent engine build thread he did a lot of homework and concluded that 15W40 magnatec was perfectly OK, and a bit more advanced than the 20/50 available these days. 5W50 is thin for an "old" V8, the later ones with serpentine front ends had a different oil pump which may put up with those (IIRC the official LR oil specs are different), I know from experience that thin oil puts you on dodgy ground in an old V8 as it struggles to prime the pump when hot. Ask me how I know Quote Link to comment Share on other sites More sharing options...
q-rover Posted October 10, 2007 Share Posted October 10, 2007 Its Gems 4.6 (1998) And it gets cold here OOP North. Yesterday was 2C when I went to work, a thin oil is good for starting when cold. The reason i use 5W(inter) is because having talked to the Mobil1 rep he suggested this as they don't import 15W-50 into Scandinavia. Mainly due to the fact that there is very little difference in the cold start capabilities of the oils when the weather is warmer, but much better when colder. By the way the cold start viscosity(first number) of an oil is measured at 40C an dthe warm engine viscosity is measured at 100C. So an oil that is 20W-50 will have the same viscosity whether mineral or synthtic. the difference is in their lubrication and cleaning properties, which is where the synthetic is far superior. Semisyn. isn't worth having. Quote Link to comment Share on other sites More sharing options...
DuRRk Posted October 23, 2007 Author Share Posted October 23, 2007 thanks for the reactions everyone. I think I'll stick to the same oil, I could perhaps put new oil in the engine, I'll drive along for a while to see whats happening with the noise DuRRk Quote Link to comment Share on other sites More sharing options...
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