Re: The Holset he341 3.0L
My dad's 2009 Rolla only gets 22mpg because his commute is about 3 miles to the park and ride. My trip is 10 miles and half of that is freeway/divided highway. I really don't agree with warmup enrichment and how it wastes so much fuel. There should be a "short trip" button on cars.
Megasquirt warmup enrichment is very very conservative as far as time goes. My warmup enrichment on the duster is really bad right now.
I am gonna go with .020" top ring and .022" 2nd ring (maybe .024")
Edit:
Buying this. Filing by hand is not so fun.
http://www.summitracing.com/parts/SME-906000/
http://www.team-integra.net/sections...59c16a01d7.jpg
And I think I am gonna gap .022 and .026 just to be safe. Gasoline is gonna run hotter then Ethanol so I can't assume .024 is indestructable on gasoline.
Re: The Holset he341 3.0L
Yikes, that thing looks expensive for how simple it is.
Re: The Holset he341 3.0L
The diamond cutting disc is $23 to replace.
Re: The Holset he341 3.0L
Pistons looked like crap. I probably should just have purchased new pistons. Cleaning the ring lands really sucked. They end up looking very decent.
http://i546.photobucket.com/albums/h...t/IMG_6860.jpg
You can see the weird oil ring differences. Different from top to bottom, but both styles were still coked up and seized.
http://i546.photobucket.com/albums/h...t/IMG_6851.jpg
http://i546.photobucket.com/albums/h...t/IMG_6854.jpg
http://i546.photobucket.com/albums/h...t/IMG_6855.jpg
http://i546.photobucket.com/albums/h...t/IMG_6856.jpg
The oil holes were clogged with coked oil so I oversized them. I did the same thing on the 10:1 pistons in the duster.
http://i546.photobucket.com/albums/h...t/IMG_6857.jpg
http://i546.photobucket.com/albums/h...t/IMG_6859.jpg
http://i546.photobucket.com/albums/h...t/IMG_6862.jpg
Pistons prepped and ready for new rings. I used a really light sandpaper on the outside and then a bit rougher on top then smoothed that out. The only real important cleaning was the ringlands, and they were very difficult to clean because of the corrosion/burned oil or whatever it was clogging everything up. The stuff i scraped out almost looked like iron oxide rust.
http://i546.photobucket.com/albums/h...t/IMG_7106.jpg
---------- Post added at 05:12 AM ---------- Previous post was at 05:02 AM ----------
The ring grinder worked great. Made filing a lot less nervy. I would watch the pile of shavings grow on top of the ring to judge how much I was removing, get it close, then install and remove after light grinding to get it perfect.
I think it was good money for what it did, how it looks, etc. I spent 161 dollars shipping some documents overseas 2 weeks ago so $99 dollars for something I get to keep = sweet. :P I just wish my bore gauge had not gone missing, so it feels like a lot more money disappeared.
.022" top Chrome
.026" 2nd, on ALL pistons. When I have done some by hand with a normal file, it’s hard to be consistent.
View of the diamond cutter. Made in the USA.
http://i546.photobucket.com/albums/h...t/IMG_7091.jpg
Non cutting side of the wheel
http://i546.photobucket.com/albums/h...t/IMG_7093.jpg
http://i546.photobucket.com/albums/h...t/IMG_7095.jpg
To level the rings, I used the one surviving pistons from my original turbo setup that was also used by Venolia to make my forged pistons (they scratched in x and y scales through the middle and scanned the top of the piston so they could cnc the OEM dish instead of having a crap circle dish). Oh, memories. Funny I have gotten use out of the surviving piston.
http://i546.photobucket.com/albums/h...t/IMG_7096.jpg
http://i546.photobucket.com/albums/h...t/IMG_7098.jpg
http://i546.photobucket.com/albums/h...t/IMG_7099.jpg
Last check on a .022” top ring.
http://i546.photobucket.com/albums/h...t/IMG_7100.jpg
Rings gapped
http://i546.photobucket.com/albums/h...t/IMG_7105.jpg
Time to put the crankshaft back in.
http://i546.photobucket.com/albums/h...t/IMG_7107.jpg
Moly lubed.
http://i546.photobucket.com/albums/h...t/IMG_7108.jpg
Re: The Holset he341 3.0L
Main Girdle Install
http://i546.photobucket.com/albums/h...t/IMG_7110.jpg
New vs Old Oil rings
http://i546.photobucket.com/albums/h...t/IMG_7113.jpg
Interesting wire setup on the oil ring.
http://i546.photobucket.com/albums/h...t/IMG_7116.jpg
Pistons reringed and good to go.
http://i546.photobucket.com/albums/h...t/IMG_7118.jpg
http://i546.photobucket.com/albums/h...t/IMG_7120.jpg
http://i546.photobucket.com/albums/h...t/IMG_7121.jpg
http://i546.photobucket.com/albums/h...t/IMG_7122.jpg
The girdle makes installing rod caps more difficult.
http://i546.photobucket.com/albums/h...t/IMG_7123.jpg
http://i546.photobucket.com/albums/h...t/IMG_7124.jpg
http://i546.photobucket.com/albums/h...t/IMG_7127.jpg
http://i546.photobucket.com/albums/h...t/IMG_7128.jpg
I went to 70 ft/lb instead of OEM 60# on the mains. The Duster has 1G DSM headbolts torqued to 90 or 95 ft/lb that also engage about 3mm deeper into the block. Not a real big deal to do this. I might have rather done 80 ft/lb but I don’t plan on detonating this thing hard. Also not sure what these bolts can take. I have 3 different versions of these main bolts (mitsu and 6g73 dodge). Not sure which oem is the best, because 1g DSM headbolts are perfect.
http://i546.photobucket.com/albums/h...t/IMG_7129.jpg
38 ft/lb on the connecting rods. Ready for all sorts of rpms that I won’t be able to run.
http://i546.photobucket.com/albums/h...t/IMG_7130.jpg
Video of shortblock turning over.
http://i546.photobucket.com/albums/h...h_MVI_7125.jpg
Next is the rear main seal, front main seal and oil pump. Then I start stripping the heads off the Duster. Most annoying part of the project will then be modifying the downpipe and modding the oil pan since I want to leave the Duster’s pan in place.
Re: The Holset he341 3.0L
Looks awesome. Good pictorial for people who are fuzzy on what gapping rings means. :)
Re: The Holset he341 3.0L
Love the detail + pics. Whenever I get around to tearing down a shortblock I'll be referring back to this :D
Re: The Holset he341 3.0L
Maybe I missed this somewhere earlier in the thread, but are you putting your Duster parts into the Spirit?