GT30 swap out?

**crazychristopheo** · #1: 05-30-2009, 02:57 PM

Ya so I have been searching around and I have come to a conclusion thus far that the VF52 can only reach 350 max ? Correct me if I am wrong ?

SO I decided to take it up a notch and blow all this months cash on a GT30, GT28 ?

From what I have read it is recommended to get new heads, cams, rods, possibly dry sump ?

Out of the budget right now.

So with this being said I realize the AVO and the polka are virtually the same turbos....2lb difference.

I realize this is no overnight project. Unless I had all night.

x02 FMIC, Fuel pump, 800cc injectors, Already have megan cat back exhaust,Agency power equal length headers,Grimspeed EWG up pipe 44mm with tube, grimmspeed cross pipe,megan down pipe. Also an cai by K&N. This stuff is sitting in my garage and has been collecting dust for at least a month now. Girlfriend was listening when I was on the phone and heard me talk about injectors and headers. Best birthday gift ever.

I drive on the highway alot inter-continental so any suggestions of something that spools up midway.

Thanks any suggestions woould be great. For I realize that injector and pump are no OBO. Anything close to a gt28-gt30 is what I am thinking about. Any input would be great dyno etc...

Any other suggestions on what to purchase to make my setup kill all my competition in my neighborhood, GTO, C55, E55 built etc

Excuse my babbling !

**Bolksey85** · #2: 05-30-2009, 03:16 PM

I don't think the VF52 will support much more than 325HP, muchless 350. Maybe E85 will get you closer but that's still a stretch. Heads are not needed unless 450+ is your goal. It has been proven that the OE heads can support up that amount. Someone correct me if wrong. Cams might be a consideration, though. Check Kelford's offerings. Dry sump, not needed. Get a JDM 12MM oil pump or for bragging rights, a modded Cosworth pump and be done. Rods and pistons, definitely at GT turbo levels. Use ARP for fasteners. MLS gaskets to keep pressure in. And I hope the AMG's are gonna be raced from a dig because you could very well still get wrecked from a roll. I saw a CLS 55 just march up a highway lane not even trying at probably 90+ last week. A simple reflash and the 113 Benz motor becomes a beast. Wait for a reply from MWiener or someone like that, as well. Someone has a GT3072 on their car but I can't think of who offhand.

**crazychristopheo** · #3: 05-30-2009, 04:37 PM

If I were to purchase new kelford cams, along with the cosworth oil pump,rods and forged pistons along with tgv delete jdm how much would labor be on these items ?

Anywhere from 800-1200 ?

maybe ?

Also maybe a silly question what are fasteners ?

Why would I have to modify the cosworth pump ?

It is shown under the rallitek website for legacy engine parts.

Obviously a new clutch and flywheel is not optional. I realize this for future reference. ACT or SPEC ?

**Bolksey85** · #4: 05-30-2009, 05:19 PM

Fasteners such as rods and main bolts and head studs.
http://www.fredbeansparts.com/servle...gacy-GT/Detail
And
http://www.fredbeansparts.com/servle...gacy-GT/Detail
There are actually 2 Cosworth oil pumps. You don't have to modify anything. One is a modified OEM pump. The other is an actual Cosworth pump, built by them. I would guess anywhere from $1000-1500 in labor. Maybe a little more if they have to remove the motor before the build. For these power levels, trans gears might also be a consideration.

**rao** · #5: 05-30-2009, 05:34 PM

Designer oil pumps - gotta have 'em

**mwiener2** · #6: 05-30-2009, 05:41 PM

GT28 is good for about 325hp at sea level, maybe 350 with E85.

I make 310ish on E85.

Here's a little secret for you guys. Buy a NEW STi oil pump. They are 11mm and higher pressure than ours to support the dual AVCS. Much cheaper than Cosworth or JDM

**MindzEyeWRX02** · #7: 05-31-2009, 12:15 AM

Quote:

Originally Posted by Bolksey85

There are actually 2 Cosworth oil pumps. You don't have to modify anything. One is a modified OEM pump. The other is an actual Cosworth pump, built by them.

Cosworth High Volume/Pressure Blueprinted Oil Pump
Put one on my 02 wrx when i put in a EJ257

If your going to replace the oil pump, you might as well go with the Blueprinted.

**crazychristopheo** · #8: 05-31-2009, 01:28 AM

Quote:

Originally Posted by mwiener2

GT28 is good for about 325hp at sea level, maybe 350 with E85.

I make 310ish on E85.

Here's a little secret for you guys. Buy a NEW STi oil pump. They are 11mm and higher pressure than ours to support the dual AVCS. Much cheaper than Cosworth or JDM

325 ? Dam is their any turbo that can put out 375 safely at sea level ?

Is this too much to ask for, does such a thing require a forged internal build?

Ill build my internals but this is my DD and I was looking for somewhere near 350-375? Any turbo that suits my needs ?

As I do travel the freeway quite a bit.

**unclemat** · #9: 05-31-2009, 08:06 AM

Quote:

Originally Posted by mwiener2

Here's a little secret for you guys. Buy a NEW STi oil pump. They are 11mm and higher pressure than ours to support the dual AVCS. Much cheaper than Cosworth or JDM

11mm pump is higher volume pump, not a higher pressure pump - for the exhaust AVCS. High revving EJ207 use 10mm pump with shimmed bypass valve.

11mm/12mm pumps are NOT recommended for LGT enigne even with opened up bearing clearances.

**johnAWD** · #**10:** 05-31-2009, 08:17 AM

Quote:

Originally Posted by crazychristopheo

325 ? Dam is their any turbo that can put out 375 safely at sea level ?

Is this too much to ask for, does such a thing require a forged internal build?

Ill build my internals but this is my DD and I was looking for somewhere near 350-375? Any turbo that suits my needs ?

As I do travel the freeway quite a bit.

My car made 394 awhp with my gt3076r burning e85 with damn near maxed out 816cc injectors, on a 100% stock longblock and at 6200 ft ASL. It's all in the tune.

**mwiener2** · #**11:** 05-31-2009, 01:05 PM

Quote:

Originally Posted by unclemat

11mm pump is higher volume pump, not a higher pressure pump - for the exhaust AVCS.

It's both higher volume AND higher pressure

**rao** · #**12:** 05-31-2009, 01:07 PM

Higher volume and pressure must be better, sounds like I should look into getting one of these.

**unclemat** · #**13:** 05-31-2009, 01:37 PM

Quote:

Originally Posted by mwiener2

It's both higher volume AND higher pressure

It's not according to Ron of RAW/Axis. But what that noob might know anyway!

Thanks for the tip - I am with rao - I need 11mm pump!

**mwiener2** · #**14:** 05-31-2009, 01:52 PM

you trust your guy, I'll trust mine

**FourMoBro** · #**15:** 05-31-2009, 04:49 PM

Quote:

Originally Posted by crazychristopheo

325 ? Dam is their any turbo that can put out 375 safely at sea level ?

Is this too much to ask for, does such a thing require a forged internal build?

Ill build my internals but this is my DD and I was looking for somewhere near 350-375? Any turbo that suits my needs ?

As I do travel the freeway quite a bit.

I have an ATP GT35R (IWG) that puts out 370whp @ a mere 17psi on a stock block. That meets your requirements, no? I can also be persuaded to part out my car and return to stock. So if you looking for a turbo used less than 5K miles......