are you kidding me here? THe stock evo pistons/rods/springs are strong enough for 500 wheel??? i currently have: tbe,downpipe,air intake with maf adapter, hbc, tune and plan on

ams intercooler and pipe, fuel pump, sc1 cams and red turbo.

with adequate boost and tune are these sufficient components for 500 hp? I was going to build internals to be safe. are 860cc injectors needed as well to reach the 500 hp?

final question, i see torque curves of all these turbos from the fp to the 35 r and they make 100 hp or 150 hp at 3500rpm, but 600 or more at 7000, what does it take to bring that down to have 350 at 3500 rpm? Thanks

 

Far as the injectors on regular fuel those "should" be ok but honestly no one seems to stay at any power level so the trend is to just recommend the max injector the cars can idle with reasonably like 1200cc or 1000cc.

Your power goals are really close to the walbro limit so perhaps a double pumper will be in your future.

I'm not sure what your asking for as far as a power band is realistic. It takes a pretty healthy amount of boost to make 350hp at such low rpm levels. Typically the turbos that can do that are not capable of flowing the desired maximum horsepower levels you want aka 600hp.

I think to achieve a similar result you will probably end up stroking the block to 2.3L and using a fast spooling stock like turbo such as the red.

 

I believe that it's torque that breaks ****. I don't believe that an evo should ever see more than 450tq on stock block, even on rod bolts. the rods tend to bend at large tq spikes at low rpms. rod bolts just hold the rods together over 8k rpms. Aaron at ER has been ******* his car and he has a stock 4g63 HTA3586 600hp/400tq give or take a bit. Can't remember the exact numbers.

 

THanks for the feedback. I've decided to go with 1000cc injectors and the 35r when i get the $ to. I'll strengthen the internals to allow for the high power at higher rpm band. Even though I'll have the power available low if i go with the red, I wont be able to achieve the 500 + with it.

 

In our area there are a few 500+whp Stock block evo's and this is on a Mustang Dyno I have a few examples like my car which is mainly used for drag it put down 513whp & 434wtq on a PT61 at 30psi using E85 + Meth best E.T. on this car had been 11.2@126mph in a 6speed tranny shifting into 5th I'm sure it would do 130mph when the built 5sp go's in so it kinda shows the true power it's putting down. There was another Evo here at 500whp doing high 10's at 130 on the stock block here as well. But if you ask me yes it can handle these power levels but for how long and at what cost that's the true question look at stm's blue evo they got that thing to trap 142 on the stock block it takes a **** load of power to trap that high so it shows how strong it can be but at these levels everything has to be very consistant by that I mean quality of gas and tune.

 

I went 11.1 at 128 on my stock block Evo............ With 72k miles on it to boot. How well it will last has all to do with how well your car has been maintained.

 

I know of stock internals handling 700+ WHP!! BUT! the kicker is keeping the WTQ around 400. Cuz when you get more than that you're at risk of breaking. It's the WTQ that should be more of a concern than the than the WHP.

 

Silk, TalonEvo, Me, and a few other evos running around MN are making 430-450whp on a dyno dynamics (500whp dynojet) and are all on the stock bottom-end. Tuning is key to keeping it together, doing a full engine build for anything under this power level is foolish! OEM parts & assembly simply cannot be beat for long-term reliability and durability (at said power levels or below). There's lots more out there like us, too.

 

Scheides, you always have good info to bring to the table

 

Thx, but I just do what works, especially when i see other people with stuff that works. Lots of people with lots of combos that work or don't work = proven results, good or bad. I like passing on what I've learned from others, that's how this whole game works and we spend our money on stuff to go faster instead of wasting it on parts we don't need Still, I've learned plenty of stuff the hard way to.

 

My motor blew at 425hp. I think it has alot to do with how you drive it and the luck of the draw.

 

Depending on components, quality of gas, tune, driving style...there are so many factors that go into engine longevity and reliability. There are tons of examples of people making 500+ HP/TQ....for how long???Who knows. I like to live life prepared and I would say that if you want 500+ HP on stock block then I would save money so that IF the motor gives up or you decide to go for big power you aren't too broke to do it.

 

i made 612hp 480tq and i beat on it everyday and it hasnt gave yet!!

 

im at 427 on STMs heartbreaker mustang dyno on 93 pump with a 35R. i dont beat on it often but so far the only thing to give up the ghost is my tilton clutch.

 

**** a Twin disc Exedy is more expensive then some built internals. Although when i do my i want to get some extra strong rods (aka Groden)