e85 Street Engine Build

[90laserRSfwd]

I sold my 91 TSI to my room mate, I have a spare 6 bolt so I've decided to build the spare engine for the Talon when this motor goes (it blow's blue smoke now, so I assume it's almost time). Just wondering what every ones take on building this motor is. What I mean is if you were having a motor built what would be somethings that you would want. Keep in mind that this will be running e85 for fuel. There isn't any fiscal or financial limits or constraints, I just want this motor to make good power (torque and horsepower) and be reliable. I've owned DSM's for years and I know a lot. I just want some opinions before I start the build. Good or bad thoughts welcome....

 

[90laserRSfwd]

Here is what I'm thinking thus far...

SCAT rods
Mahle Pistons (C/R is under thought)
ACL's
ARP head and main's
BSE
90 Oil filter housing
external cooler
ported ORV
Mitsu MLS headgasket
EVO VIII valves, springs, and retainers
BC 264 / 272 combo w/ HKS gears
RRE flywheel
ACT 2600 w/ street disc

Not sure about intake manifold, throttle body, and some other things

 

[16g-2ndgen]

sounds good, but why would you want evolution 8 valve components? would those even work? although the other stuff seems to be a great idea. remember to have everything checked and decked for the mls hg. and e85 ftmfw.

 

[90laserRSfwd]

EVO VIII exhaust valves are sodium filled (they handle high heat better). They are supposed to be lighter (1g dsm vs evo). The springs are better as well (and cheap).

 

[dsm-onster]

Where do you want to go with power? I suggest higher compression if this motor is going to see e-85 primarily.

 

[90laserRSfwd]

I wasn't shooting for a certain number in particular. Perhaps 350 - 400 on a good tune. I'm shooting for a reliable setup that WILL be used (well more like abused) 7 days a week. I'd be very happy with 400awhp. What do you recommend?

 

[wishihadatalon]

I wasn't shooting for a certain number in particular. Perhaps 350 - 400 on a good tune. I'm shooting for a reliable setup that WILL be used (well more like abused) 7 days a week. I'd be very happy with 400awhp. What do you recommend?

Stock motor??? If you still want to build a motor and plan on staying at that power level, you could get away with much cheaper stuff. 400whp to a 4g63 is nothing and if your setup was/is right on that 16g, you should be getting close.

 

[90laserRSfwd]

I know I don't have to do a crazy amount of work to get 400hp out of the motor. I was just getting opinions. I know I don't really need to build the motor to produce 400 but the thing is I'm not saying that is my goal in the end. I think I'm starting to realize I don't know what I want yet, and that is what's stopping me from getting this thing done.

 

[wishihadatalon]

I know I don't have to do a crazy amount of work to get 400hp out of the motor. I was just getting opinions. I know I don't really need to build the motor to produce 400 but the thing is I'm not saying that is my goal in the end. I think I'm starting to realize I don't know what I want yet, and that is what's stopping me from getting this thing done.

Well that is cool then.

 

[cbrfrenzie]

If it were me, I would go with the following, given you're going to be primarily running E85:

9.0:1 CR pistons minimum (If this engine is going to see E85 100% of the time, maybe jump it to 9.5:1 or 10.0:1 CR)

BSE

264/272 combo for street ability

3G lifters and Evo exhaust valves

ARP hardware and Mitsu 4 layer HG

1000cc injectors with DSMLink and a healthy fuel pump / feed setup to pour in the E85

RRE or ACT flywheel with ACT 2600 w/ street disc

The stock intake would be fine for your current goals, plus you save $500+ in the build.

And everything you can do to keep the oil and coolant as cool as possible (but still within operating temp of course )

I would prob run an external waste gate off the O2 housing with a punishment racing externally dumped O2 housing and a Tial 38, but that's my preference. I've had nothing but bad luck with internal gates with actuators.

 

[Freerevving]

Mahle doesn't tell you, but their 86mm pistons are 8.7:1, that's part of the reason I bought them

You could also shave 0.015" off the head when you resurface

 

[DougR]

Bro. If your sincere with wanting to abuse it everyday. Build it as strong as your budget allows. and keep the tune within a reasonable amount. Aka 350-400 as you stated...

With your current build specs and Maintaning that engine. you could Flog that thing all day long and not worrie about mutch.... Except drivetrain.... Thats where the Real cash outlay is going to be... at 350-400 beating on it daily you WILL start killing drivetrain!

Soo... you might want to ask yourself if a smooth 300-350 would do it for you and if you could restrain yourself from upping the boost...
IF so. some minor driveline mods. Aka Tranny mods. and Axles would put you in the comfort zone..

My builds are always excessive. Simply because I drive it like I stole it 24/7. So I build it with that in mind. Shure I have blown motors and driveline parts... But they was already the weak links from the start... Except for my last chevy 4.3 which I tried to turn into a submarine... (4 foot deep water, in a dropped S-10. all was good untill my rearend floated!)
Anyways back on point... Theres more to a Car build then just the engine... Think about that. when you decide your ultimate power and driving goals...

 

[90laserRSfwd]

Thanks for the advice thus far guys. I know the trans, tcase, rear, etc, etc, etc. I'm just working on the engine right now. It would be nice to move to a BEP s256 T3 .63 a/r in the future. Right now I was just wondering if anyone knew some other "tips or tricks" when building methanol motors. High compression sounds like a trend.

 

[90laserRSfwd]

No one is going to give up some secrets huh?.....

 

[dsm-onster]

E85 requires more fuel to run efficiently. That is all. Otherwise it performs simply better than gas with all facets. There's no difference in the setup but the fact that you can get away with more: boost, compression, timing, closer to labda a/f ratio. . .

 

[Black_Bullet]

I agree with the higher compression. 9.1 sounds good on e85. Better valves and valve train doesnt sound like a bad idea either, and just make sure you ARP everything, and just do stronger pistons and rods and you should be good.

Like the other guy said, drive train is a bigger deal on these cars.

 

[throwedgsx]

To be safe i'd run 1600cc injectors with E85. I run 1000cc right now on E85 at 25 psi and my idc's are pushing 80%. I'll be upgrading to 1600's myself. I currently have 430whp. Just some info for you to go off of.

 

[90laserRSfwd]

To be safe i'd run 1600cc injectors with E85. I run 1000cc right now on E85 at 25 psi and my idc's are pushing 80%. I'll be upgrading to 1600's myself. I currently have 430whp. Just some info for you to go off of.

Just a quick glace at your profile and I can see why your over 400awhp and using up those 1,000's...