4.7 updated rockers with smaller orafice question
#11
03-31-2022 | 11:57 PM
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From: Gainesville
Yeah, the driver's side valve cover is no fun. You have to loosen the brake MC so it moves around enough to get the cover to clear. The radiator is actually single core, but the single core is a bit thicker even than the two core OEM. Still 2 is better.... more surface area, but it's as good as a single core gets. Look at the parts store junk and you'll see the difference in specs.
Was surprised to see the lights are still on sale. I've had mine 9 years now and they've held up very well.
https://www.amazon.com/Durango-Repla.../dp/B004W5TQF4
If the link doesn't work, search Amazon for "Dodge Dakota/Durango Replacement Headlight Assembly (Diamond Design, Black)" and look for the smoky gray lights.
Was surprised to see the lights are still on sale. I've had mine 9 years now and they've held up very well.
https://www.amazon.com/Durango-Repla.../dp/B004W5TQF4
If the link doesn't work, search Amazon for "Dodge Dakota/Durango Replacement Headlight Assembly (Diamond Design, Black)" and look for the smoky gray lights.
#12
04-02-2022 | 02:47 PM
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From: Atlanta
Not meaning to scare you off doing the job. It's not technically difficult, just very tedious.
Forgot...you will also need one of these and an air compressor to keep up the valves. Either that are you can try that rope trick. That didn't work for me...
Forgot...you will also need one of these and an air compressor to keep up the valves. Either that are you can try that rope trick. That didn't work for me...
Last edited by Dodgevity; 04-02-2022 at 06:47 PM.
#13
04-03-2022 | 10:46 AM
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Not meaning to scare you off doing the job. It's not technically difficult, just very tedious.
Forgot...you will also need one of these and an air compressor to keep up the valves. Either that are you can try that rope trick. That didn't work for me... https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Forgot...you will also need one of these and an air compressor to keep up the valves. Either that are you can try that rope trick. That didn't work for me... https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
It doesn’t scare me. I’m actually looking for a crew cab donor truck to rebuild the rear end and front diff as well as the engine and transmission. It will be the host for a 4bt Cummins, nv4500 and Dana 44’s.
#14
04-03-2022 | 06:34 PM
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From: Midwest
Thanks. I watched a lot of his videos before starting the job. The rockers get plenty of lubrication when the lifters are fully primed. Ever heard "the most wear occurs at startup?" Well that is exactly what's happening with the lifters. When you park your car overnight, etc, the oil drains out of them and this is the clattering you hear till they fill. Once the engine is running for a few minutes, everything is lubed, so this is why I don't get the point of the revised rocker... if anything, it looks like they might impede oil from being drawn into the lifters..
#15
04-03-2022 | 07:09 PM
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From: Atlanta
The lifters get pressurized oil forced inside when running, so the size of the hole isn't going to matter. Where the smaller hole will matter is on shutdown. It will be harder for all the oil to bleed back out, so there will be more oil inside the lifter on startup the next morning. Left long enough and it'll still bleed down, but the smaller hole means it'll take longer to do so.
These lifters for the 4.7L are the same brand and part number, however the one on the left is considered the improved version. Notice the smaller hole at the top. I guess the lifter on the left should keep a better pressure than the right.
Last edited by Dodgevity; 04-03-2022 at 10:22 PM.
#16
04-04-2022 | 07:05 AM
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From: Clayton MI
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edsdakota (04-04-2022)
#17
04-04-2022 | 07:52 AM
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From: Atlanta
I should mention that these are not Mopar lifters... brand is Sealed Power/Federal Mogul. When I put them in, the parts store had 15 of the new design and one of the old. Tried finding the newer one everywhere and could not. Just in case, I put the old one in the most accessible place... passenger side valve cover, top right.. Don't you know it?...I think that's the one that's ticking now. Engine sounds like direct injection engine for the first few minutes and it sounds like a single lifter. I've listened to it with a mechanic's stethoscope. Will have to go back in this summer.
Last edited by Dodgevity; 04-04-2022 at 07:55 AM.
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edsdakota (04-04-2022)
#18
04-04-2022 | 07:05 PM
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Joined: Mar 2008
Posts: 19
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From: Gainesville
Not meaning to scare you off doing the job. It's not technically difficult, just very tedious.
Forgot...you will also need one of these and an air compressor to keep up the valves. Either that are you can try that rope trick. That didn't work for me... https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Forgot...you will also need one of these and an air compressor to keep up the valves. Either that are you can try that rope trick. That didn't work for me... https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
#19
04-04-2022 | 07:10 PM
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Joined: Mar 2008
Posts: 19
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From: Gainesville
https://www.drivparts.com/brands.html
For reference ... they own several companies. As for lifters, was looking at Sealed Power also. Rockers?
For reference ... they own several companies. As for lifters, was looking at Sealed Power also. Rockers?
#20
04-04-2022 | 07:36 PM
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From: Atlanta
Valve stem seals...
https://shop.advanceautoparts.com/p/...E&gclsrc=aw.ds
Lifters
https://shop.advanceautoparts.com/p/...E&gclsrc=aw.ds
Did not replace the rockers, not even the one that ejected. It was undamaged.
https://shop.advanceautoparts.com/p/...E&gclsrc=aw.ds
Lifters
https://shop.advanceautoparts.com/p/...E&gclsrc=aw.ds
Did not replace the rockers, not even the one that ejected. It was undamaged.