Longevity of full builds, the good the bad
#283
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My uncles use it in the semi's we have for the farm. A couple of those engines are well over their 1 million mile marker.
#288
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figured i might chime in coming from the v8 world, if you buy flat tappet cams for old school v8s like the chevy 351 or ford 302 the info that comes with ALL of them is to use rotella t6 for the initial break in period of an engine. the lunati voodoo cam i most recently had in my camaro drag car went on to say that the reason this oil is suggested is due to it being a diesel oil and as such retains the zinc additive that regular oils leave out due to roller cams and overhead cams nowadays, they also recommend if using standard motor oils to add one bottle of gm engine break in additive pt#88862586. this might be some problems with early bearing failure, i only ran rotella due to it being a bit cheaper then royal purple+ additive. never had a problem eather. this was all addressed years ago when zinc was taken out of oils for emissions reasons and was causing flat tappet cam failures for a couple years, with high boost high horsepower vq's it is highly likely that the rod bearings are encountering forces similar to what was causing flat tappet cams to fail
#289
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I used mobil 1 15-50 on two (2) 4g63 engines. (Those are DSM engines for all you children) BOTH had spun bearings as cause of engine failure. Both were near complete losses...
Using castrol syntec 5-30 per factory specs. 32K on Z and feels like it's still brand new...
Just my 2 cents
Using castrol syntec 5-30 per factory specs. 32K on Z and feels like it's still brand new...
Just my 2 cents
#290
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another interesting thing to note is cadillac exclusively uses mobil one synthetic in there engines(i know becuase i worked at a cadillac pontiac gmc dealership.) we had about 6 or 7 cadillacs for every 1 pontiac or gmc, about 60 or 70 percent of them where for oil consumption, valvetrain failure or spun bearings, in a years time we replaced about 50 engines and where only a small-medium sized dealership.(i dont have proof we replaced em i dont work there anymore can believe me or not) with all types of engines having trouble with mobile one mayby it really is bad and just a few people dont have trouble with it.
EDIT: seems that rotilla changed there formula while i was working at the dealership and eos was discountinued, we just got lucky with pleanty of it being on the shelves. however comp cams makes a supplement thats essentially the same thing i have to look it up on summit, im not gona be putting a new engine in until 2012 but ill be trying it when i get back from that deployment. i really do think the problems might be high pressures on the bearings from high horsepower numbers. anyone seen funny car or top fuel bearings after a single run? however in the end this is all a educated guess at best but the worst these products will do is cost a few bucks =/ worth a try imo
EDIT: seems that rotilla changed there formula while i was working at the dealership and eos was discountinued, we just got lucky with pleanty of it being on the shelves. however comp cams makes a supplement thats essentially the same thing i have to look it up on summit, im not gona be putting a new engine in until 2012 but ill be trying it when i get back from that deployment. i really do think the problems might be high pressures on the bearings from high horsepower numbers. anyone seen funny car or top fuel bearings after a single run? however in the end this is all a educated guess at best but the worst these products will do is cost a few bucks =/ worth a try imo
Last edited by jerryd87; 01-01-2011 at 08:56 PM.
#291
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Building my block soon.. i'm on a vortech sc.
-Wiseco pistons - 8.8:1 cr, 96mm
-Eagle rods
-ARP headstuds- L19
-ARP main bolts
-HKS headgaskets, 97mm
-Cosworth bearings - standard size
-Pathfinder cooling mod
-Tomei 264 cams
-Revup oil pump
my engine is very weak since i got it, it produced 210whp stock run on DJ. hope this fixes the low power.
-Wiseco pistons - 8.8:1 cr, 96mm
-Eagle rods
-ARP headstuds- L19
-ARP main bolts
-HKS headgaskets, 97mm
-Cosworth bearings - standard size
-Pathfinder cooling mod
-Tomei 264 cams
-Revup oil pump
my engine is very weak since i got it, it produced 210whp stock run on DJ. hope this fixes the low power.
Last edited by maXmood; 01-01-2011 at 09:19 PM.
#292
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Building my block soon.. i'm on a vortech sc.
-Wiseco pistons - 8.8:1 cr, 96mm
-Eagle rods
-ARP headstuds- L19
-ARP main bolts
-HKS headgaskets, 97mm
-Cosworth bearings - standard size
-Pathfinder cooling mod
-Tomei 264 cams
-Revup oil pump
my engine is very weak since i got it, it produced 210whp stock run on DJ. hope this fixes the low power.
-Wiseco pistons - 8.8:1 cr, 96mm
-Eagle rods
-ARP headstuds- L19
-ARP main bolts
-HKS headgaskets, 97mm
-Cosworth bearings - standard size
-Pathfinder cooling mod
-Tomei 264 cams
-Revup oil pump
my engine is very weak since i got it, it produced 210whp stock run on DJ. hope this fixes the low power.
#296
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i'm on 2.87 pulley, and soon will have the blower upgraded with 928 impeller + upgrade the cog pulley to 34/28T.
a friend of mine with the same cr is producing 455whp on DJ.
#300
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yes i'm using haltech, but he couldn't pull much timing due to hearing some knock, so he had to play it safe.
now when i decided to build, i informed the tuner that i'm going with 11cr, he advised me not to, because we were seeing knock on stock cr with our fuel.
Higher cr + low oct fuel = engine taking a crap.