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Looking for Build input MY08 STI
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Looking for Build input MY08 STI
Looking for Build input MY08 STI
Looking for Build input MY08 STI
Looking for Build input MY08 STI
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Old 02-08-17, 09:50 AM   #1
yebokmj
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Default Looking for Build input MY08 STI

I have an MY08 STI that's consuming about a quart of oil every 1000 miles and pushing coolant at high boost pulls but never over heats, time for a rebuild. Here is what I have currently for power mods:

Killer B Holly Header w/V-band up-pipe DEI Titanium Wrapped,
Grimmspeed Catted Limited downpipe
Grimmspeed Turbo Heat Shield
Cobb Catback exhaust
IAG TGV deletes w/phenolic spacers
KSTech air injection deletes
ETS TMIC
DW 65C Fuel pump
Cobb Fuel Pressure Regulator Kit
Grimmspeed 3-Port boost solenoid
Perrin Turbo 2.4 inlet
Grimmspeed Cold air intake

I have a designated race car a MY95 GF with an EJ255 swap so my goals for this car are purely as a street car that's reliable and makes a bit more power than I'm seeing now. Oh and E85 is not available locally.

Here is my current plan and I'm open to any input:

IAG Stage 2 Tuff short block
ARP head studs
OEM Engine Gasket kit
1000cc injectors by ?
Group N motor Mounts
Killer B oil pickup and Baffle
Factory water pump cast blades style, part number ?
Factory Timing belt with Gates component kit
Blouch Dominator 1.5XT-R 8 or 10? coat it or turbo blanket?
ACT clutch kit either Heavy duty or Xtreme Duty Street?
IAG or Killer B AOS

Might be forgetting something or not even aware of something.
Thanks in advance for the help.

Joshua


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Last edited by yebokmj; 02-08-17 at 09:59 AM.
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Old 02-08-17, 06:14 PM   #2
UrdnotWrexSTi
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Default Re: Looking for Build input MY08 STI

Build looks good.
Injector Dynamics
Gates water pump and timing belt kit will suffice
10cm
ACT Heavy Duty will handle 550tq easily
IAG AOS
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Old 02-10-17, 09:25 AM   #3
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Default Re: Looking for Build input MY08 STI

Thanks for the input,
ID seems to be the way to go for injectors based on my research.

I've always heard go OEM on the water pump and stay away from the newer ones that are not cast blades. What are your thoughts that you're recommending the gates kit?

Why 10cm, a lot of the threads I have read are older but seem to say the 8cm for a street car?

The Heavy Duty is only rated to 515, is it under rated? I want a very street-able clutch but not if it means a short life span.

I have the IAG on my other car and it's a great product. I'm curious about the final release version of Killer B AOS though. For it's FA version is nice and small and they said their design does't need the coolant flowing through it.
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Old 02-10-17, 05:10 PM   #4
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Default Re: Looking for Build input MY08 STI

Gates makes the water pump and rollers for our engines, last I heard. So they are basically "OEM"

10cm for better overall gains. You'll sacrifice with a little lag for better top end power gain. I run a 8cm on my 20xtr and I love it, but I wish I would've gone for the 10cm just to see how much more I could've pushed it.

It's a bit under-rated, yes. I've personally seen an STi put 560tq on a ACT HD clutch for 20k miles, and a couple Evo guys I knew had them too, and they put down around 550tq as well. BUT, if you're not going anywhere near that high in the torque range the ACT HD is perfect, even for longevity.

You want coolant flowing through it so the oil doesn't sludge up on cooldown, especially in cold climates. The only upside I see for excluding using coolant for heat would be easier install and less mess.
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Old 02-10-17, 06:07 PM   #5
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Default Re: Looking for Build input MY08 STI

Agree with both Urd's posts.
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I become a more loyal IAG customer every time I drive my STI
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Old 02-10-17, 06:50 PM   #6
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Default Re: Looking for Build input MY08 STI

I used the full Gates "Blue Line" set-up when I swapped my timing belt kit.
At times I drive my car to it's limits, so I wanted the best kit available.

Cheers!
Rocket
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Old 02-11-17, 12:17 AM   #7
UrdnotWrexSTi
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Default Re: Looking for Build input MY08 STI

I've heard some bad things about the Gates blue timing belt though, like the blue coating on the belt rubbing off on the rollers and gunking them up. If you want really good timing belts, Cosworth and Tomei makes great stuff. I haven't heard anything from the Greddy belts, but I'm sure its also good.
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Old 02-11-17, 04:11 AM   #8
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Default Re: Looking for Build input MY08 STI

Quote:
Originally Posted by UrdnotWrexSTi View Post
Build looks good.
Injector Dynamics
Gates water pump and timing belt kit will suffice
10cm
ACT Heavy Duty will handle 550tq easily
IAG AOS
I agree with the above ^. Id definitely go for Injector Dynamics injectors. Maybe even ID 1300's

Quote:
Originally Posted by UrdnotWrexSTi View Post
I've heard some bad things about the Gates blue timing belt though, like the blue coating on the belt rubbing off on the rollers and gunking them up. If you want really good timing belts, Cosworth and Tomei makes great stuff. I haven't heard anything from the Greddy belts, but I'm sure its also good.
I've herd some bad reviews too about the gates blue "racing" timing belt kit. The blue finishes tends to rub off the belt and build onto the pulleys. It can cause uneven belt wear and even cause the belt to slip. I would recommend using the regular gates timing belt kit. I think I read somewhere that its suppose to be a stronger belt than OEM. I would also recommend doing water pump, thermostat, and radiator along with your build. Might as well replace all the things that are going to eventually fail.
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Old 02-11-17, 06:02 AM   #9
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Default Re: Looking for Build input MY08 STI

Thanks, Guys this is making my decision easiser.
Do any of the gates water pumps have cast blades or am I putting to much emphasis on this?
I had heard about the gates blue timing belt concern but thought it had been addressed.
Thermostat will definitely be replaced, is it worth going with a colder thermostat?
I was thinking about going with a Koyo radiator. But that will put me over 8G not including any unforeseen stuff or fluids.

What are peoples' thoughts about the the heads. Should they be decked or as long as the check in spec and are cleaned properly they are good to go? I have been told a few guys not to bother with decking.
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Old 05-15-17, 12:08 PM   #10
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Default Re: Looking for Build input MY08 STI

I have heard a few horror stories from the gates waterpump. I would stick with oem waterpump and use the gates belt kit.
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