Patriot Performance & Valve Springs
12-10-2012, 10:40 PM
#21
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At first it was just the DOD ones we were seeing, but now it's the normal ones too. Mostly in trucks. I can't seem to nail it down to any one or two cylinders so it must be more of a quality control issue with the lifters instead of oiling I guess. I do see some low oil pressure issues with the gen 4 motors though. One....we never could figure out why it was low. It never had a noise of failure....just very low pressure. I about bought the core and have thought about just throwing it in something and driving it til it dies. LOL
12-10-2012, 11:00 PM
#22
At first it was just the DOD ones we were seeing, but now it's the normal ones too. Mostly in trucks. I can't seem to nail it down to any one or two cylinders so it must be more of a quality control issue with the lifters instead of oiling I guess. I do see some low oil pressure issues with the gen 4 motors though. One....we never could figure out why it was low. It never had a noise of failure....just very low pressure. I about bought the core and have thought about just throwing it in something and driving it til it dies. LOL
I got it back to the shop and put a real gauge on it to see if it was truly and issue or just a IPC problem.
75 miles later it still did not act up again. I took the gauge off and returned it to the customer with instructions to let me know what happens. I have not heard from her yet.
So in the end I had to wonder if her lack of Maintenance(not changing oil when she should) and a low battery set every thing in motion.
I have had weak batteries set off all kinds of strange stuff on many of the newer cars. mainly because they fall below turn on threshold at start up and idle.
Over al though and back on topic of lifters there is nothing I hate more then pulling a head back off after a H/C job to replace a new set of lifters because the are "Too loud"
12-10-2012, 11:17 PM
#23
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we put a mechanical guage on these before pulling them. We have a couple different adapters that mount down at the filter. They look similar to oil cooler adapters.
I'd rather swap an opti than pull a head to change a lifter. LOL
I'd rather swap an opti than pull a head to change a lifter. LOL
12-14-2012, 04:06 PM
#25
12-14-2012, 07:35 PM
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12-17-2012, 08:56 PM
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The only problem that I see with the LS7 lifters is the inconsistency in bleed down rate which can translate into one or two making noise. You might get a set that none of them make noise.
I have a new alternative that is better than the LS7 lifters, but not as pricey as the Morel lifters. I'll be offering new Slow Leakdown Rate lifters which are machined with tighter tolerances between the lifter bore and plunger. A lifter that has loose clearances can bleed down fast at low engine speeds and can cause the dreaded tick. These new lifters will be priced at $199 retail which will be about halfway between the price of the LS7 lifters and the Morel 5290's that I sell for $299. I'm pretty excited to be able to offer a better lifter than the LS7 at a better price point than the Morel.
http://www.briantooleyracing.com/slr...r-lifters.html
I have a new alternative that is better than the LS7 lifters, but not as pricey as the Morel lifters. I'll be offering new Slow Leakdown Rate lifters which are machined with tighter tolerances between the lifter bore and plunger. A lifter that has loose clearances can bleed down fast at low engine speeds and can cause the dreaded tick. These new lifters will be priced at $199 retail which will be about halfway between the price of the LS7 lifters and the Morel 5290's that I sell for $299. I'm pretty excited to be able to offer a better lifter than the LS7 at a better price point than the Morel.
http://www.briantooleyracing.com/slr...r-lifters.html
We use Brian Tooley spring kits in all our builds, all with excellent results.
Rob.
