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Old 01-25-2003, 12:51 PM   #1
STEALTH-WRX
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Default Update on my motor build if anyone is interested

well i have had a long journey through my motor build and some parts have been changed around. here was my current set up that i was supposed to have done january 1st.

ej22 closed deck block
ej25 crank for 2.35 displacement
custom h beam forged rods
custom forged pistons

heads done by Dan Paramore Racing ( DPR )
fully ported and polished heads with factory cams
sti valvesprings and retainers
sti tvg housings
pe 800 cc injectors

custom turbo manifold
60-1 stage 5 turbo with .58 a/r
tail 40 mm wastegate
blitz front mount

still no ecu



so onto the story. all i was waiting for was my pistons and then my motor would be complete. the dealership who contracted all of this for me calls the engine builder this last tuesday and asks him what the hell is going on. so he says that the guy who he placed the order with the pistons quit and he has to reorder them and it may take 11 weeks. ( holy crap ) so the dealership calls me and i am very upset. the dealershipe calls the engine builder back and says the we are going to go through someone else and he took to long. well i suppose the builder didn't want to lose the business so he gives me and option of resleaving my block with extra thick wall sleaves and increasing the bore to make the motor a 2.5. he also guarantees 30 days from last tuesday and it will all be done. so i gave it the okay and we will see if it was worth it.

the engine builder also claims that he has the same motor configuration on his sandrail drag motor that runs alcohol and it produces 800 flywheel hp. i hope all goes well and i can drive my car in april.

this has been the longest 6 months ever.

so i would have to say that some good things and some bad things came from this. Good things being i now have a 2.5 motor that is "bulletproof", my engine will actually be finished, and i dont feel so bad about the new sti being a 2.5 since i have one too. the bad things being that i had to wait this long, and that now i may have to buy bigger injectors and and a bigger turbo.

i will keep you all posted as soon as i get more info.
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Old 01-25-2003, 01:18 PM   #2
newbie sewbie
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what the heck, 800 cc injectors?!?!?!

u plan on running 400-500 whp? that'll be a beast
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Old 01-25-2003, 10:58 PM   #3
STEALTH-WRX
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500-600 wheel hp.
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Old 01-25-2003, 11:47 PM   #4
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Holy funk, you'll be pulling Porsches out of your front grill from now till Doomsday.


Full_Clip recommends pissing on some V8's first.
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Old 01-26-2003, 01:08 AM   #5
SuicidalLabRat
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800's are not the mate to a 500whp forced air build. Assuming BSFC around .75 ( pretty safe ) you will need more flow. If we calculate from the crank, assuming drive train loss:
650HPx.75=487lbs.
487lbs/4 injectors=122lbs/hr.
122/.8=152lbs/hr injector @ 80% duty cycle

Now these are some pretty safe #'s so you could fudge it quite a bit. I am assuming a really good safety margin and trying to keep the fuel cool with IDC's and base pressure nice and low, but the size needed assuming you dont stage, will be more like ~1000 or more.


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Old 01-26-2003, 01:23 AM   #6
STEALTH-WRX
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thats why i am going to run some secondaries.
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Old 01-26-2003, 01:40 AM   #7
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Default nice setup man

I know what you mean as for waiting 6 months etc...I have a bmw m3 which i had an engine and transmission imported from germany...took a little more than 6 months to complete..it felt like a lifetime....good luck with the build up...i'd like to see the results!!! its gonna be sick....your kill list is going to be HUGE
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Old 01-26-2003, 01:47 AM   #8
SuicidalLabRat
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Ah! Thats what I did. Not a fun tune though. Six months is a long time, though I spent that trying to resolve fuel issues alone! ...and still no resolve.


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Old 01-26-2003, 01:51 AM   #9
STEALTH-WRX
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please post a pic, i need ideas on where to put them and how they go. thanks
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Old 01-26-2003, 03:09 AM   #10
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I will be at my storage on Thursday or Friday, I can take a pic then. If you happen to remember, send me a reminder PM on Thursday... I am prone to forget.



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Old 01-26-2003, 01:11 PM   #11
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no problem.
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Old 01-26-2003, 01:22 PM   #12
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if that engine builder falls through check out arao ngineering they build some crazy sand rails and are down the street from my house. the number is 818.709.4781. the guy has been in business for years and is very knowledgeable about engine building. he makes custom 4valve heads for small blocks that make 100 hp more than the best 2valve heads.
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Old 01-26-2003, 11:11 PM   #13
Sunrise City Rider
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The Injectors will be fine...Just add boost to meet the A/F ratio with the 800cc injectors...If you aren't satisfied with the power and the A/Fs then up the boost and plumb in the additional fuel injectors and go from there...If it runs rich and is hard to solve any fuel problems, look into upgrading the ignition with a Digital 7 and add boost...Engines with large injectors love high boost...Just get it all to land at about 12.5:1 and add a heavy spark while keeping tabs on any detonation...Lots of power is made with this simple method of adding boost and fuel with heavy spark...If you plan on daily driving, look into a complete fuel system upgrade with an Aeromotive Fuel Pump and -10 feed and return lines plumbed into a fuel cell or stock tank...Its all about abundance and then feeding the fuel with oxygen to burn it...If its still rich and you don't want to up boost, add a Dry Shot of Nitrous...Or look into intercooler upgrades...You will never get it just right as you have to compromise all the time...But, you can make lots of power safely and that is all you can really ask for from a car's engine...

Zee
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Old 01-27-2003, 12:31 AM   #14
STEALTH-WRX
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cool thanks for the info. i was just going to run -8 fuel line from the stock tank to the filter to the fuel rails, but do i really need -10 line. thats huge stuff. also whats the biggest fuel pump i can fit in tank. thanks
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Old 01-27-2003, 12:41 AM   #15
Sunrise City Rider
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Forget the intank models...Get a quality Inline pump and tap the tank...Using -10 is easier on the fuel pump as theres less resistance to the flow of the fuel...Its also easier to keep fuel pressure low and consistent with the larger line...If you want to use the intank model then use a Moroso Y adapter with the inline pump to bring both pump outlets together...

Zee
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Old 01-27-2003, 12:43 AM   #16
Sunrise City Rider
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Oh and a 60-1 compressor will never produce enough Air Volume to make 800HP at the crank...Look into a Greddy T78 or Turbonetics T72...

Zee
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