Whatever we are doing here it must be working. I can't remember the last time someone here had a cam wiped even on break in.
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Hey S. Rodney! Is quaker defy still around? I have looked for it and not much luck.
Hey moper will be using some crane springs #69308 with retainers. These have 389 lbs spring rate.
So have been running the mopar "red" springs with damper for about 8 years now. So decided to go with the new crane springs mentioned. Just doing so for added safety against valve float I suppose. These seem si close to the mopar spring. Will be running a 292 mopar cam.A 389# spring rate means that compressing the spring one inch will add 389 lb to whatever the valve seat load is. More likely you have around 0.5 inch valve lift, guessing about 120# seat which is then 120+(0.5*389) = 315# at max lift.
(The force on the cam nose itself will be multiplied by your rocker arm ratio, and some other factors like opening the exhaust valve against residual cylinder pressure, also. But these rules of thumb are usually noted for just the valve spring loads).
Well it's the old skool 108° lobe center. Rest of my car is set up for it I think. KB flat top pistons, X-heads,holley strip dominator intake, thermoquad that has been tweaked for more output and 3.91's in rear. 727 transmission with a 9.5" FTI 3400- 3600 stall converter. Car is a dodge dart sport 360.Ah, the old 509 (or hopefully the newer 509 with the 114 lobe centers instead of 108). Your plugs and the guy behind you will appreciate it
Sounds like a reasonable spring, just make sure it fits everywhere (spring seats, valve guides, retainers, rockers, coil bind...)
So, what’s the harm of adding zinc additive? Why would anyone take a chance to prove a point.
Motor oil warranty?....Has anyone ever filed a claim on their motor oil warranty?
Sounds about right!15w-50 mobil one full syn
Why switch from vr-1, it contains the zinc needed . I've been using Valvoline racing oil since the 70's.Ok everyone! I know this has been beat to a pulp. But currently what oil preferably conventional is good enough to run in a 360 with stock clearances? I have been using 30 weight vr-1. But need other sources of oil please!!
So far have been using 30 weight straight oil from valvoline vr-1. I wonder if to go for a different weight? One that's easier to find? Would 10/30 weight be an equal to 30? Or a little thicker say 10/40?
A 389# spring rate means that compressing the spring one inch will add 389 lb to whatever the valve seat load is. More likely you have around 0.5 inch valve lift, guessing about 120# seat which is then 120+(0.5*389) = 315# at max lift.
(The force on the cam nose itself will be multiplied by your rocker arm ratio, and some other factors like opening the exhaust valve against residual cylinder pressure, also. But these rules of thumb are usually noted for just the valve spring loads).
10w-30 is the somewhat the same as sae 30 in that they both have the same heat protection, however the sae 30 weight isnt a multi viscosity oil, the 10w-30 will act as a 10 weight in cold temps and a 30 weight in hotter temps. So if you see any temps colder than say 40 degrees the 10w-30 may be a better choice (Temps in regard to outside temp not engine temp).
Using thinner oil when its cold out takes stress off the oil pump and aids in quicker delivery of the oil in cold temps, using a multi viscosity weight oil gets you the best of both worlds. Plain sae 30 weight isnt reccomended for temps any lower than about 35-40 degrees depending on which chart you go by but the 10w-30 because of the multi viscosity 10 weight cold rating it should be good in temps as cold as 15-20 degrees.
Always remember in multi weight viscosity oils the w in 10w-30 or any other multi viscosity weight stands for winter because it is the cold viscosity rating, the number after is the hot viscosity rating
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I know this is published by gm but there are so many charts out there that all differ 5-10 degrees on the oil rating, this one looked closest to what i prefer as far as oil weights in the temperature ranges. Also if you have a vehicle with a owners manual there should also be a similar chart in it as well
Fwiw im running 15w-50 mobil one and she has no problem starting at 25-30 degrees.