My High-Boost Engine Build - 6G72

[WarmAndSCSI]

Could have sworn Greg (PharmEcis) was the one who said the stock heads flow fairly well. I dunno, pretty much everybody on Club3G contradicts themselves. Greg is a cool guy, though. Knows his stuff very well, but he has his lapses.

[QnzMostWanted]

club3g fails :D
postwhore post #eleventybillion

[WarmAndSCSI]

club3g fails :D
postwhore post #eleventybillion

Thanks, Denver. I'll take that as: "Good luck on the engine build, hope the machine shop doesn't rip you a new one."

:)

[QnzMostWanted]

Thanks, Denver. I'll take that as: "Good luck on the engine build, hope the machine shop doesn't rip you a new one."

:)

yeah thats encoded in the eleventybillion thats why there was no space

[WarmAndSCSI]

Machining work didn't get completed today. Just took a second look at my spare 3 pistons and found that one of them had a slightly smashed top ring land (you can tell if the top ring can't slide around freely). Another has some really bad scuffing on one side, so that leaves only 1 that I want to use in this new build. I just hope the other 3 pistons in the rear are still OK. I haven't had a chance to look at them yet.

I've been contemplating turbos and I think I've settled on a T3/60-1 0.82 A/R with a 5-bolt turbine housing. Should be good for 600 WHP and will be a good budget turbo for my first turbo setup.

[WarmAndSCSI]

I'm really bored, so here is a detailed rundown of exactly everything that is going into this build.

Cylinder block:
- Stock 6G72 2-bolt main block:
+ overbored to exactly 3.626 in
+ deck material removal TBD
- Custom CP Forged Pistons from Race Engineering/Tearstone (92.100 mm, 1 mm overbore)
+ part number: XTP-549P921
+ purchase link: http://www.raceeng.com/p-7954-mit-v6...2921mm881.aspx
+ specs:
++ bore diameter: 3.626 in
++ cylinder wall clearance: 0.0035 in
++ compression height: 1.19 in
++ intended compression ratio: 8.8:1
++ piston diameter 0.5 in from bottom of skirt: 3.6225 in
++ top groove width: 0.06 in
++ 2nd groove width: 0.06 in
++ 3rd groove width: 0.159 in
++ top groove diameter: 3.311 in
++ 2nd groove diameter: 3.281 in
++ 3rd groove diameter: 3.297 in
++ intake valve relief: -0.100 in
++ exhaust valve relief: -0.100 in
++ dish depth: -0.06 in
++ pin diameter: 0.866 in
++ pin length: 2.5 in
++ lock type: 0.088 double spiral lock
++ weight: 363 +/- 1 g
++ cam profile: CP832XS (CP-specific)
- Sealed Power (Federal Mogul) piston rings (92.100 mm, 1 mm overbore)
+ part number: E-528KC 1.00 MM
+ link: http://store.summitracing.com/partde...5&autoview=sku
+ purchase link: http://www.rockauto.com
+ specs:
++ bore: 92.100 mm or 3.626 in
++ top ring width: 1.5 mm
++ 2nd ring width: 1.5 mm
++ oil ring width: 4.0 mm
++ top ring material: chrome-plated steel
++ 2nd ring material: cast iron
++ oil ring material: chrome-plated steel scrapers with a stainless steel spacer
- 3SX Performance custom forged rods
+ style: h-beam
+ fasteners: ARP 2000
+ purchase link: http://www.3sx.com/store/comersus_vi...dProduct=26904
- stock 6G72 forged crank
+ micro-polished
+ oil holes radiused/chamfered
- Clevite 77 main bearings
+ part number: MS-2226P (stock size)
+ purchase link: http://www.cskauto.com
+ full upper oiling groove
+ three upper oiling holes
+ partial lower oiling groove
+ two lower oiling holes
- Clevite 77 thrust washers
+ part number: TW-458S
+ purchase link: http://www.rockauto.com
- Clevite 77 rod bearings
+ part number: CB-1411P (stock size)
+ purchase link: http://www.rockauto.com
- rotation assembly balancing
+ internally balanced to within a fraction of a gram
+ pistons all within 1 g
+ rods all within a fraction of a gram

Cylinder heads:
+ resurfaced to factory RA spec
+ 3-angle factory-cut valve job
- head gaskets: Fel-Pro PermaTorqueMLS 9537PT (identical to Mitsubishi OEM MLS gaskets)
- camshaft seals: Fel-Pro TCS 45483
- valve stem seals: Fel-Pro SS 70795 Viton seals

sealant used for assembly: Permatex Ultra Grey RTV

You many wonder why I chose Fel-Pro gaskets for almost everything, and the reason is that most of what they sell for my engine is identical to OEM if not better. This isn't the case for some domestic and other foreign applications.

If anybody wants any additional information regarding what I've used in this build, please feel free to ask here.

[laxinwarrior]

Damn you really were bored huh. Anyway the 60-1 sounds like a real solid choice in my book. As always good luck and can't wait until you get everything sorted.

[boostzealot]

tim thanks for the info as always and again, i cant wait to see your progress. are you going to be using your stock fans for your new rad? still wondering if i need to get a newer assy or just a fal slim fan.

[WarmAndSCSI]

tim thanks for the info as always and again, i cant wait to see your progress. are you going to be using your stock fans for your new rad? still wondering if i need to get a newer assy or just a fal slim fan.

I only have 1 fan right now and I'll just be reusing it.

Got a new water pump on the way and everything else is ready. Just waiting on the call from my machine shop and the huge dent they're gonna put in my wallet. Then, I just gotta assemble a new long block!

[6G72gearhead]

Well Greg (PharmEcis) has told me several times on the phone that the exhaust ports suck, and thats why power drops off as suddenly as it does, the cam is not quite as bad as some think, but it still doesnt flow well up top. So I will see what the p&p does with the headers, or maybe I should wait, or I probably dont have the self restraint to wait.

[WarmAndSCSI]

Somebody already told me I shouldn't bother with another thread for my turbo build, so I'll post everything here as I piece it together.

X-tech hotside piping:

T3 inlet flange with 38 mm wastegate flange:


Will need to be highly modified eventually, but it'll work for now for my power goals. It's still a lot better than some cars' stock piping.

Huge frickin' intercooler:

(Yes, that's a stack of dead forged pistons on the right :D)

Yes, I plan to make it fit. Remember, I need something that's gonna be efficient for my power goals. Throw my current methanol injection system on top of that and I'll be good for at LEAST 800 WHP.

[laxinwarrior]

Not bad TJ. But when you do go to upgrade, v-band clamps, that's all I have to say. I won't use anything else on my next setup.

[WarmAndSCSI]

This is all preliminary right now. T3/60-1 turbo is an absolute POS compared to what I'm used to spending on this car performance-wise. Going cheap now, will improve the setup if I like what I'm seeing.

[WarmAndSCSI]

Okay, somebody just asked me for the dimensions on the intercooler. The core is approximately 23 in x 11.5 in x 3 in. Pretty freakin' big.

[underated]

that looks like my intercooler lol





mine i had to shave the hell out of the bottom part of the bumper thats why i ended up getting the mugen lip because the very bottom was really thin and it didnt look right so the lip covered it up

do you plan to stay with the stock bumper?

[6G72gearhead]

Damn man, if you make 800 whp and come through my town, you will need to race a certain civic that has been terrorizing this area for some time now.

[WarmAndSCSI]

Yeah I'm sticking with the stock bumper. This IC is going to barely fit behind it. Real close.

Damn man, if you make 800 whp and come through my town, you will need to race a certain civic that has been terrorizing this area for some time now.

We've got a few 700+ WHP Civics here... I'm not interested in beating any of them lol. Taking a 2500 lb car, stripping it, and then slapping a huge turbo on it just doesn't impress me too much. Still a Civic, still ugly, not impressive ;)

[6G72gearhead]

Yeah, I just think it would be funny for an out of towner with a galant to do what so many F-body's in our area have tried. The guy who owns it is one of the most knowladgable people and one of the nicest guys I know. I will try and find a video of him racing a mustang with a 76 mm single turbo.

[WarmAndSCSI]

I might be picking up everything tomorrow. Depends on from who/when I can bum a ride. I do have to get some valve stem seals to them first.

[6G72gearhead]

Shit I need to call mitsu on some parts like, tomorrow.