Beginning to plan out my build. Advice would be appreciated!

[Tumbler510]

Decided to ditch the E55 project and keep the S4 and build it.
Car currently has K04s + Meth.
I'd like to get SRM K24's, E85 tune, rods, and 2.8 heads. Should be 600AWHP.

Questions:
First off - Is this a solid build?
Rods: Are scat good for this power level? I've seen conflicting ideas.
E85 Tune: Currently running upgraded 91 Octane fueling. What all is required beyond a new fuel pump, injectors and filter? Some say it needs new lines as well.
2.8 Heads: Is this worth the cost in added power?

Here's some of the spreadsheet I put together for it:

Category Upgrade Maker Model
Engine Turbos SRM K24
Engine Turbo Inlets SRM -
Cooling SMIC ER -
Engine Rods Scat 2.7t
Exhaust RS6 Downpipes SRM SRM
Engine 2.8 Heads OEM OEM
Engine Head Gaskets OEM OEM
Engine Valve Cover Gaskets OEM OEM
Engine Head Bolts OEM OEM

Fueling E85 Pump Walbro 450
Fueling E85 Injectors Bosch EV14

[S4tech2]

I also am interested in info. I would like to know differences on the 2.7 and 2.8 block and crankshaft. From my understanding the 2.8 heads will about outflow the turbos. Look at the project/build section for some info as well.

[jimmer009]

My 2 cents k24's if a little lag is OK. They give more power up top. 605's will spool closer to a k04. And 2.8 heads are better yes but you have to swap over exsaust valves. Build sounds great to me

[y3ti]

I believe it would be better to just use the 2.8 intake cams, the heads arent worth the work. I think I remember a ~600awhp e85 k24 car just using 2.8 intake cams.

I'm planning basically the same exact build, minus the cams.
I went RPM rods. SRM has them on their website.

Opening up the block is a TON of work and time. Some say to just drop in the rods and be done with it, but that seems like cutting corners to me.

Honing, decking, rod swap, rotating assembly balance, hot tanking... and now you need to replace all the gaskets you took off to get there.

What clutch? What flywheel? Holding all that power is gonna cost you.

[Tumbler510]

What clutch? What flywheel? Holding all that power is gonna cost you.

Thats in a later part of the spreadsheet :)
Not too sure about the clutch situation for this build. Recommendations?

[y3ti]

I'm leaning towards an AMD stage3 to go with my TTV flywheel.

[Mark00s4]

I believe it would be better to just use the 2.8 intake cams, the heads arent worth the work. I think I remember a ~600awhp e85 k24 car just using 2.8 intake cams.

I'm planning basically the same exact build, minus the cams.
I went RPM rods. SRM has them on their website.

Opening up the block is a TON of work and time. Some say to just drop in the rods and be done with it, but that seems like cutting corners to me.

Honing, decking, rod swap, rotating assembly balance, hot tanking... and now you need to replace all the gaskets you took off to get there.

What clutch? What flywheel? Holding all that power is gonna cost you.

What kind of extra work is required for 2.8 heads?

[Drehmoment]

600 whp is a tall order on SRM K 24's......their shop car made something around it before it blew up and still the car barely trapped 128. If you want real 600 whp Tial605's might come close but you really need 770's or the upper end TTE turbos.

Morale of the story is there is not a cheap Chinese lunch to get to 600whp, it will require major bucks. The classifieds are full of those broken dreams.

Also fueling alone for that powerlevel done right is very expensive. It always amuses me when someone goes thru several vendors drop down menu and believe that is all they have to spend

[MikeyB3]

What's your budget, man? If you're doing some of the work yourself, then you're probably okay. If you're going to go 2.8 heads, be sure you're taking full advantage of the flow on your turbo selection. This setup will probably get you close if not right at 600whp, but I think you'll be pushing the setup a bit.

A couple things I would spare no expense:
Heads: do all you can with the highest quality your budget allows. If you can, there's bonuses like a 5 angle valve job, porting, polishing, redoing the whole valve train.
Rods: Get some good ones. I'm running IE (Integrated Engineering), and I can vouch for their quality up to a 668whp (103 fuel + 100% meth) pull. I feel they're underrated and very reasonably priced considering their high quality.

[Tumbler510]

Doing all of the non-specialized work myself.
It seems like 2.8 heads are more trouble (and $$$) than their worth.
I don't really have a set budget, but don't want to just dump my wallet into it.

IE rods are a lot cheaper than I thought. Guess that's the set I'll go with.

[Monty23]

Doing all of the non-specialized work myself.
It seems like 2.8 heads are more trouble (and $$$) than their worth.
I don't really have a set budget, but don't want to just dump my wallet into it.

IE rods are a lot cheaper than I thought. Guess that's the set I'll go with.

Plan on dumping your wallet whether you like it or not

[jaychen]

Plan on dumping your wallet whether you like it or not

Justin nailed this.

There is just so much more that goes on behind the curtains when you up the ante and want to make some serious power.

Sure people get lucky with doing engine work themselves, I'd consider them the exception, not the rule.

[jibberjive]

I don't really have a set budget, but don't want to just dump my wallet into it.

Famous last words.

And the advice above is coming from some people who have been down that road. Good luck with the build!

[christianb5s4]

^What they said. I planned on a budget just for the sake of planning preparing for my stage 3 build, and I surpassed my original 'budget' long ago and my build hasn't even started. I'm also not opening the motor up.
Plan on at least an extra $1-2K on top of what you originally estimated.

[Tumbler510]

I believe it would be better to just use the 2.8 intake cams, the heads arent worth the work. I think I remember a ~600awhp e85 k24 car just using 2.8 intake cams.

I'm planning basically the same exact build, minus the cams.
I went RPM rods. SRM has them on their website.

Opening up the block is a TON of work and time. Some say to just drop in the rods and be done with it, but that seems like cutting corners to me.

Honing, decking, rod swap, rotating assembly balance, hot tanking... and now you need to replace all the gaskets you took off to get there.

What clutch? What flywheel? Holding all that power is gonna cost you.

I've never actually torn a block apart like this. Just heads, gaskets, etc.
What all should be done while the engine is out? What is the general breakdown of pricing per process?

[jaychen]

I must be getting old. This can all be found with a search. Many people have asked this before you im sure many will continue to do so after.

[y3ti]

You'll never find the answer you're looking for until you open it up.

Just do it. That's honestly the best way to go. It really isn't difficult, just be careful when you start removing the pistons. Take your time and stay organized.