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Old 12-21-2015, 10:23 PM   #1
ThehatedRS
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Default Supercharging a 2.5

What's everyone's opinion? Pros? Cons? Assembly process? Good or bad idea? Has it been done? Let loose! Don't be hostile doh.
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Old 12-21-2015, 10:34 PM   #2
GEE-OTTO
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It's been done a few times very little risk hardware wise as with any boost addition to a EJ253 a good tune is crucial and will result in long life.

http://legacygt.com/forums/showthread.php/my-e85-raptor-sc-2-5i-build-195317.html?t=195317
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Old 12-22-2015, 12:29 AM   #3
terrastrife
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just be aware that a raptor install will set you back pretty much the same as an ej257 swap. Do it if you want to be different, not fast.

Then get a 257 short block and up the boost when the 251/253 dies
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Old 12-22-2015, 01:31 AM   #4
Brother EddieJ.
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Old 12-22-2015, 07:00 AM   #5
czm
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I would go with the 257 block as well
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Old 12-22-2015, 09:33 AM   #6
GEE-OTTO
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Quote:
Originally Posted by terrastrife View Post
just be aware that a raptor install will set you back pretty much the same as an ej257 swap. Do it if you want to be different, not fast.

Then get a 257 short block and up the boost when the 251/253 dies
Quote:
I would go with the 257 block as well
So much false, sad.

OP read, ask those that have swapped and keep in mind the swap was R&D'd on a stock 253/1 test vehicle. If they required a swap to a semi-closed deck block well they prob would have developed the kit for that platform.
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Old 12-22-2015, 12:22 PM   #7
terrastrife
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Quote:
Originally Posted by GEE-OTTO View Post
So much false, sad.

OP read, ask those that have swapped and keep in mind the swap was R&D'd on a stock 253/1 test vehicle. If they required a swap to a semi-closed deck block well they prob would have developed the kit for that platform.
The kit works even better on a 255/257 because you can run more boost AND have more revs. You gotta remember the raptor "kit" is in essence a universal kit, with a bracket and pipes designed to sorta fit the EJ25 range. That's all it is, you can do the exact same thing for 1/4 of the cost with an eaton blower or similar off an old ford or bmw. Tuning is critical, the NAs have weak internals, one too many FBKC and boom.

I had the money to throw down for a kit but decided not to, if I wanted a faster car I would've bought a faster one to begin with with that kind of outlay. The sum of my mods infact, make my car SLOWER
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Old 12-22-2015, 04:34 PM   #8
ThehatedRS
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Could someone post a link for this raptor setup? I can't find it anywhere.
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Old 12-23-2015, 02:40 AM   #9
terrastrife
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Quote:
Originally Posted by ThehatedRS View Post
Could someone post a link for this raptor setup? I can't find it anywhere.
they are available at raotor superchargers (google), about $5kAUD give or take, with the currency conversion and shipping it'll be around $5k USD plus the costs of getting on a local dyno for a tune (an average of at minimum another $500), because there's no way you will get this etuned correctly. Chuck in extra money for boost, afr, coolant gauges etc.
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Old 12-23-2015, 12:07 PM   #10
Patrick Olsen
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Quote:
Originally Posted by ThehatedRS View Post
Could someone post a link for this raptor setup? I can't find it anywhere.
Not even on Google? It works for me.
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Old 12-23-2015, 12:29 PM   #11
Hondaslayer
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Moved to proper forum. You will likely get better views / replies in here.
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Old 12-24-2015, 07:51 AM   #12
omiotek
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You have a few options.

The only volt on option is the raptor.

The other option is to do a home brew which is what most do. Obviously this requires fabrication skills.

Also keep on mind you will need to figure out tuning and you will still need supporting mods just like a turbo.

The 251 block is fine the internals should not be pushed passed 7psi maybe 8 but its a ticking time bomb.

The pros are instant boost and for me it seemed to be the most efficient way to get the power i want. What i mean is i want 300awhp said and done. Having that near instantly is what i want. The reason my build went above and beyond was because of what i wanted out of the whole car.

Cons to supercharging is it requires fabrication and if you do not have the skill to fab it up i think the turbo way is the way to go for overall ease of installation and to make power.
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Old 12-24-2015, 12:35 PM   #13
IllNastyImpreza
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do yourself a favor and just swap it
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Old 12-27-2015, 10:08 PM   #14
GEE-OTTO
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You realize that link i posted has detailed install, tune and driveability information?
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Old 12-31-2015, 01:30 PM   #15
no694terry
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a high cfm supercharger at 7 or 8 psi will be plenty fun, your rs is an 05 making it flashable. Hack in, reduce the timing map down like 10 degrees, rescale in some wrx injectors, install super charger and enjoy a long healthy life as long as you keep up on oil.
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