MIL.SPEC lightweight 2.3 MR build
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Joined: Aug 2008
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From: Toronto
E85. 30-35 psi on the street, depending on what the car likes.
Well, the point of my build is threefold:
1) Lighten the assembly
2) Reduce friction
3) Contain/control heat
So, any kind of friction surface will have been treated in some way. Oil pump gears and shaft, bearings (main, thrust, bs), balance shafts, crankshaft and piston rings are WPC treated. Cams will be too. There's a moly coating on the piston skirts and I'll be putting a Techline coating on the cylinder walls.
Well, the point of my build is threefold:
1) Lighten the assembly
2) Reduce friction
3) Contain/control heat
So, any kind of friction surface will have been treated in some way. Oil pump gears and shaft, bearings (main, thrust, bs), balance shafts, crankshaft and piston rings are WPC treated. Cams will be too. There's a moly coating on the piston skirts and I'll be putting a Techline coating on the cylinder walls.
I really want to get my Gearset WPC treated.
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From: Los Angeles
Some updates.
Dropped off the assembly today to get balanced at Revco Precision. Talked to the owner Larry. He's been in the game a long time. Used to do all the Nissan GTP engines and later engines for Toyota. If you're in SoCal, he's the guy you want balancing your stuff. And since balancing is so cheap (about $100 on a I4), it's silly not to get it done.
www.revcoprecision.com
Ok, here are some more bits. MIL.SPEC rods before and after getting a Swain Tech oil shedding coating. Oh, and I have one more 150mm set left. Hit me up if you're interested. I'll give you a decent price.
Also, here is the Tomei wind age tray and crank scraper with the coating.
Should have everything back in two weeks and then assembly can start. Yay!
Dropped off the assembly today to get balanced at Revco Precision. Talked to the owner Larry. He's been in the game a long time. Used to do all the Nissan GTP engines and later engines for Toyota. If you're in SoCal, he's the guy you want balancing your stuff. And since balancing is so cheap (about $100 on a I4), it's silly not to get it done.
www.revcoprecision.com
Ok, here are some more bits. MIL.SPEC rods before and after getting a Swain Tech oil shedding coating. Oh, and I have one more 150mm set left. Hit me up if you're interested. I'll give you a decent price.
Also, here is the Tomei wind age tray and crank scraper with the coating.
Should have everything back in two weeks and then assembly can start. Yay!
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From: right neer daaa beach boyyyy
Some updates.
Dropped off the assembly today to get balanced at Revco Precision. Talked to the owner Larry. He's been in the game a long time. Used to do all the Nissan GTP engines and later engines for Toyota. If you're in SoCal, he's the guy you want balancing your stuff. And since balancing is so cheap (about $100 on a I4), it's silly not to get it done.
www.revcoprecision.com
Ok, here are some more bits. MIL.SPEC rods before and after getting a Swain Tech oil shedding coating. Oh, and I have one more 150mm set left. Hit me up if you're interested. I'll give you a decent price.
Also, here is the Tomei wind age tray and crank scraper with the coating.
Should have everything back in two weeks and then assembly can start. Yay!
Dropped off the assembly today to get balanced at Revco Precision. Talked to the owner Larry. He's been in the game a long time. Used to do all the Nissan GTP engines and later engines for Toyota. If you're in SoCal, he's the guy you want balancing your stuff. And since balancing is so cheap (about $100 on a I4), it's silly not to get it done.
www.revcoprecision.com
Ok, here are some more bits. MIL.SPEC rods before and after getting a Swain Tech oil shedding coating. Oh, and I have one more 150mm set left. Hit me up if you're interested. I'll give you a decent price.
Also, here is the Tomei wind age tray and crank scraper with the coating.
Should have everything back in two weeks and then assembly can start. Yay!
Erick how's that 6 speed holding up
Thread Starter
Former Sponsor
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From: Los Angeles
IMHO, this is the pièce de résistance of the engine build, our Billet MIL.SPEC Pistons. 9.75 CR and the lightest weight Evo piston I've seen at 262 grams. These pistons were designed by Aby to not only have higher compression, but also proper dish (many HC pistons have flater tops). They're ceramic coated with a moly coating on the skirt. I plan on having the domes and valve faces ceramic coated too. More heat in the combustion chamber = more powa 
Also went with a lighter weight DLC coated pin. Had them cryo treated as well since they're rated at 150hp/cylinder and we'll be bumping up against that with the Red on E85.
Also had the rings WPC treated for friction reduction.
Also went with a lighter weight DLC coated pin. Had them cryo treated as well since they're rated at 150hp/cylinder and we'll be bumping up against that with the Red on E85.
Also had the rings WPC treated for friction reduction.
I'm looking forward to the 2.3 HTZ data, That thing should run good!
What size are the pins? That turbo and 100mm crank will make alot of torque so upgraded pins are a good idea IMO. You mentioned they are rated 150 a hole. Using the 15% drivetrain rule that equals 510whp. You should easily make more then that. I'm picky about weight also but went with a .250 wall pin incase I get a larger turbo one day.
I'm looking forward to the 2.3 HTZ data, That thing should run good!
I'm looking forward to the 2.3 HTZ data, That thing should run good!
Thread Starter
Former Sponsor
iTrader: (94)
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From: Los Angeles
Oil Shedding Low Friction Coating. Read here:
http://swaintech.com/wp-content/uplo...ating-News.pdf
Since I am an advertising copywriter, I actually think it's a terrible tagline/slogan lol
Funny in a room full of guys. Not great from a brand perspective regarding a high-end engine builder/balancer perspective. Sounds like something he came up with a few beers in
http://swaintech.com/wp-content/uplo...ating-News.pdf
Since I am an advertising copywriter, I actually think it's a terrible tagline/slogan lol
Funny in a room full of guys. Not great from a brand perspective regarding a high-end engine builder/balancer perspective. Sounds like something he came up with a few beers in
Newbie
Joined: Nov 2015
Posts: 23
Likes: 1
From: Moscow
Thank you for answer. This oil shedding coating must be the same as you have on your piston skirts. But what benefits this type of coating exists over DLC ?Sometimes we can find DLC coated piston skirts as well as pins. What was the main reason to choose this coating?
Thread Starter
Former Sponsor
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From: Los Angeles
Coating: DLC
Edge Type: Chamfered
Length: 2.250in
Nominal Weight: 106g
Outside Diameter: .866in
Outside Diameter Alt: 21.9964mm
Series: 94 Series
Type of Material: 9310 Nickel Carbon Steel Alloy
Wall Thickness: 0.170in
Wall Type: Straight
The wall thickness on the other pins was .230in., but those were heavy at like 123 grams a pin...which in my mind completely eliminated the advantage of saving 23 grams a piston with the billet units I have. Both those pins are made from case-hardened high-nickel carbon steel.
Last edited by Erik@MIL.SPEC; Feb 22, 2016 at 11:23 AM.
Newbie
Joined: Nov 2015
Posts: 23
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From: Moscow
Thank you for answer i just want to understand what is better for oil shedding : DLC or this coating. I remember some articles with DLC benefits in oil shedding from different engine surfaces..
Last edited by spaggiari; Feb 22, 2016 at 12:45 PM.