Hey Guys,
With my current build, the lash adjusters/lifters may become problematic due to the high RPM and heavy lift cams of the built head. I figured its best to replace these, however machining is required to use aftermarket lash adjusters/lifters and are a pain to adjust.
When looking at the stock OEM Ecotec lash adjuster/lifter, part number GM 12572638, I realized that in 2008 a new version was made (structurally the same, made better internally). This new part number is GM 24100005. I will use these instead of the stock ones.
FYI for anyone else not wanting to spend the time and money to machine the head to accept aftermarket lifters (ex. Jessel).
"FRIENDS DON'T LET FRIENDS DRIVE STOCK"
Another quick FYI:
When we buy an upgraded valvetrain (springs, retainers) certain accessories may be overlooked by most novices such as myself. A majority of us don't change the followers/rocker arms, lash adjusters/lifters, valve guides, spring seat locators, valve stem seals etc. Some obviously not required depending on the build and power produced. However, I found some information on the valve guides as I may replace the cast iron stock OEM's with the Supertech. See below:
Stock OEM Ecotec Valve Guides, Part No. GM: 90537248, Specs:
I.D = 0.2365 inches or 6MM
O.D = 0.395 inches or 10.04MM
Supertech Mangnese/Bronze OEM Ecotec Valve Guides, Part No. GDE-EC60-SM, Specs:
I.D = 6MM
O.D = 10.04MM
These will swap out for the stock ones.
"FRIENDS DON'T LET FRIENDS DRIVE STOCK"
as for aftermarket lash adjusters. I do not recommend them. I knew someone with some. The machining to get them to fit right too forever. Motor was much louder and had a knock register on HPT. When they finally went back to stock lash adjusters noise was gone and so was the knock.
I do know someone made some high dollar ones that were adjustable (no machining required), they are hard to come by.
FU Tuning
That is interesting and not what I am looking for.
Would like to see those adjustable ones! Upgrading to this new version, hopefully will let get me by in the high RPM range (PJ busted one at 8000 RPM). I will not make power that high so even at 7500 RPM we should be good to go?
"FRIENDS DON'T LET FRIENDS DRIVE STOCK"
Don't change he valve guides. To use supertechs bronze guides you must machine the head and you better have go machinist because those valve guides have to be dead straight. They are a nightmare. Most people buy them end up selling them once they find out the work involved for no real gain.
On the inside my car looks like a fighter jet.
Thanks Rob! If I end up needing those guides down the road, its an option. I'll leave whatever is in the built head I have as I am sure Patriot Performance used new stock cast iron guides.
"FRIENDS DON'T LET FRIENDS DRIVE STOCK"
02ECOTECIMPORTKILLER wrote:That is interesting and not what I am looking for.
Would like to see those adjustable ones! Upgrading to this new version, hopefully will let get me by in the high RPM range (PJ busted one at 8000 RPM). I will not make power that high so even at 7500 RPM we should be good to go?
I think the newer stock will be fine to your goal.
FU Tuning
I think so too. Hopefully, I don't have to find out! Found a great deal for a set of 16 shipped for 87 bucks (dealer wants a crap load for each). It is recommended I have the clearances checked regardless even if it is a GM product made for the ecotec head. I need to let my machine shop know that these are not the "stock" lifters. Agree or have them pop em in?
"FRIENDS DON'T LET FRIENDS DRIVE STOCK"
no, they won't work... I have a few sets of the revised design... pm me they are all new
I thought someone was running those lifters in a jbody. The main issue with solid lifters is you have to machine each one and set the lash. Over time they will get noisy. Not good for a daily driver.
On the inside my car looks like a fighter jet.
You are talking about the ones I just posted a link on Ebay for correct?
The Bates Engineering solid lifters also require the same machining you mentioned. So, I can stick with the LNF "revised lifters" and be fine? No machining required? Is it possible to use the Bates rockers and the LNF solid lifters combo?
"FRIENDS DON'T LET FRIENDS DRIVE STOCK"
I do not recommend solid lifters. They are noisy, so noisy it can cause false knock.
FU Tuning
According to my 3 minute research, the 24100005 is the old part number replaced by part number 12572638. Hence why you couldn't find 24100005.
Part Info
Part No. 24100005
Part Description ADJUSTER, Engine Valve Lifter
Replaced By 12572638
Manufacturer GM. This genuine GM part is guaranteed by GM's factory warranty.
Part Info
Part No. 12572638
Part Description ADJUSTER, Engine Valve Lifter
Manufacturer GM. This genuine GM part is guaranteed by GM's factory warranty.
Part Fitment
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Chevrolet Malibu 2004-2015 4 Cyl 2.0L, 4 Cyl 2.2L, 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.6L 4 DOOR HATCHBACK; 4 DOOR HYBRID; 4 DOOR NOTCHBACK; BASE 4 DOOR
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Enjoy life while you can, because you only have one shot. So go BIG or go home.
Thanks Ben! Can I PayPal ya when I need to do some more research? lol.
"FRIENDS DON'T LET FRIENDS DRIVE STOCK"
02ECOTECIMPORTKILLER wrote:Thanks Ben! Can I PayPal ya when I need to do some more research? lol.
Ha, I charge by the second.
Enjoy life while you can, because you only have one shot. So go BIG or go home.
Damnnn lol. I bought em, thanks!
"FRIENDS DON'T LET FRIENDS DRIVE STOCK"
