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Posted by slow gst, Sep 2, 2009
Newbie Forum - Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum.
Mitsubishi EVO III Big 16G Turbo for the Mitsubishi Eclipse - DSMtuners.com
I recently got one from Forced Performance for crazy cheap; call them and see if the sale is still active Forced Performance Turbochargers: Mitsubishi EVO III Big 16g Turbo
Just buy a real Evo III and bolt it on as-is; perhaps you may want a 34mm wastegate flapper installed if you're attempting to hold boost under 20psi.
The Evo's 7cm turbine housing has a larger outlet than the standard 7cm Mitsu housings, so the only possible porting you can do would be to the turbine housing inlet...and it's been proven that porting the sealing ring lip out of the housing does nothing to add to the turbo's efficiency.
You're better off spending the money you would've spent on porting to get yourself a new Evo III manifold and 7cm sealing ring.
Can I buy it somewhere with the 34mm wastegate flapper? I am pretty sure they do not come with them.
I did have my manifold off last night to change the turbine inlet gasket to MLS, and my wheels still look great, and the turbo would spin just by blowing into the turbine inlet. I'm quite pleased with my genuine EVO III.
I'm not sure, and I didn't have that done. I think it creates a longer leading edge on the compressor wheel to increase flow, but someone can correct me if I'm wrong.
I don't see a reason to clip a 16g. It already spools fast. It's just a little slower than a 14b.
On a side note...I also have an evo3 exhaust manifold and I see where the sealing ring is to be...does anyone know where I can find some dimensions on this so I can send them to my brother at the machine shop and after work we can just throw it on?! I'm at work and not near the turbo until later...anyone have anything i can make use of...as far as dimensions go...
They measure exactly like a 2" galvanizes pipe . I've hacked a piece and made my own seal ring. Click.
If you have an evo3 manifold. Measure the depth of the housign step and gasket thickness AND manifold step. Add them up and cut your ring to that height.
Clipping is what is done to squeak a few more lb/min out of a certain compressor wheel / turbine union when you're reaching the end of the turbine's flow potential. This is normally only required when your boost pressure and airflow are at their peak.
For example, many have logged 44+lb/min with a 20G compressor wheel, but only when mated to a TD06 or 06H turbine. The larger turbine has enough flow potential to max out the 20G compressor. Now if your 20G turbo were to have a TD05H turbine, you may struggle to make more than 40lb/min due to the size of the turbine. Clipping may help you to get to 42lb/min or so without sacrificing the quick-spool of the TD05H turbine.
And like you've said before, now-a-days we have td06sl wheels td06 wheels td06h wheels. Don't have to get a clip to get flow and spool inbetween a small wheel and a large wheel. We have much more options than we used to.
. . . Clipping is FAR cheaper however Upgrading the turbine wheel means new wheel/shaft assembly PLUS good machining of the turbine housing (that your average machine shop can't do.
Forced Performance Turbochargers: FP 34mm Wastegate Flapper
Or if the link doesn't work just go to Forced Performance's main page and search for "flapper".
I don't have mine in front of me, but you can always call up RRE and ask them, or just make the purchase yourself for about 7 bucks (use the below link and scroll until you see the phrase "factory sealing rings").
RRE's Eclipse Turbo Upgrades
Clipping can be debated. I've run clipped on 2 turbos but never before and after testing. On my small 16g clipped the topend was impressive but there was lag. I don't think the tradeoff is worth it unless a record is being set on a small turbo. It would probably be the last mod I did before ditching the turbo, just to see what I could eek out on the topend.
And the sh!tty 1g exhaust manifold has a better radius than a 2g or evo3 manifold already Those smaller runners are good for that, AND keeping velocity up. . .
BTW, my 13g exhaust manifold and 1g exhaust manifold have the exact same shape runners inside and out. The only difference is the outlet to the turbo is for a td04 and smaller.
I've seen both. And faced it. Why some say the tnetics unit is terrible I don't know. Guess they never saw it work or seen comparison dynos to anything else I suppose. Runs good enough for several memeber to get some redonculous trap speeds. The Fp version does have the volume there if you plan on pushing everything beyond all sense of reason though