wldevo

Hi guys,

Im over here in New Zealand and In a couple of months im buying a evo 8 MR.

Ove had a evo 1 and a evo 4 in the past, but no one over here seems to have had much to do with building up a motor in a evo 8 to get decent power.

Now i know alot of you guys have done this so hopefully you can help

Im looking at making around 350kw at the wheels, or around 500hp at the engine.

I will be running a GT35/40 with a .63 a/r exhaust, a microtech computer, 800cc injectors, etc etc.

Yhis is what i have been recomended for the engine build:
Short engine.
Eagle forged steel rods
J&E forged pistons 8.5 to 1 at 20thou o.size
Nitride crankshaft
Balance bottom end components-rods-pistons-crank etc..
ARP main stud kit-ARP head stud kit
New alloy timing cover with new oil pump
New waterpump
Remove balance shafts and modify oil pump drive
Machine block and mirror finish bore to aid running in.
ACL race bearings-big end and main-to aid running in.
HKS 1.2mm steel heaad gasket
New frost plugs-clean all threads etc...

Head.
Crack and hardness test head
Mild port and 3 angle valve job
Cut new seats and reface valves
New seals
Crower springs with titanium retainers
HKS 264 inlet and exhaust cams
HKS adjustable cam pulleys

Any tips or tricks, or anything else you can recomend would be much appreciated.

Cheers

Jeff

thebluesky

iTrader: (28)

I'd personally run 272's instaed of 264's. You'll get better mid/high end power.

wldevo

anyone else have any ideas?

Agent-Smith

Looks good, is that gonna be a stroker moter or not?

P.S. I would definitly go with 272's or even 280's

Ludikraut

iTrader: (17)

That sounds like overkill for what you want (500hp at the engine crank, which ~400whp) - I don't even want to guess what they quoted you on co$$$t.

Before you let yourself be talked into that rather extensive list of mods, and before ppl here on the forums can offer constructive advice, the real questions you need to answer are:
1.) How are you planning to drive the car (street, road racing, drag racing, rally)?
2.) What kind of gas do plan on using?
3.) How much of your daily driveability to you want to keep?

500hp at the crank can be achieved w/out going to a GT35r and w/out building the block and head.

l8r)

leif

yeah you can get 500bhp with something simple like a bolt on 30r kit and race gas...

timzcat

iTrader: (10)

..

thebluesky

iTrader: (28)

Question 2: I see yo're planning on porting the head, but i see no plans for oversized valves. why/ I personally would either change the valves completely OR, on account of the fact you're planning to use hks cams, leave them alone. The hks cams are actually designed to be used with your stock valves an valve springs. If you're planning to use cams other than hks, I'd definitely swap the springs and retainers to avoid valve float.

Ted B

iTrader: (6)

I don't see much of a point in using HKS adjustable pulleys with HKS 264 cams, period.

wldevo

Mainly gonna be used on the street, but also gonna be in dyno challenges at shows, and poss strip every now and then.

The reason i like the idea of building the bottom end is i want reliability, i want 500+ reliable horsepower that i can drive whenever i want.

thanks for all your input guys, has helped heaps, any more ideas let me know.

or if anyone has done something similar i would love to get get your specs to give me some ideas

Cheers

Ang Wen Yan

You can do with:

HKS 280,ARP head stud,BR Stage 1-4,Mentahol kit,AEM EMS,COP ingnition and GT35R kit with a boost of 30 psi and some clutch.

feldguy

iTrader: (4)

I agree with the 272 cams. The end result will be close when it comes to the 262's as far as driveability, from what Ive read. As far as everything else goes, sounds great. I would, however suggest to use Crower, Oliver or Pauter rods with the build. Eagle's are great, but for the 500 or so extra dollars, why not just have it done for with the best? Just food for thought. Best of luck, keep us updated.

hybrids14

Hay, upgrading the rods is a great suggestion, but he left out my favorite company... Besides the many he already mentioned... there are more great companies, but Carilos A-Beam is one of the best rod I've seen...