Turbo Choice for EJ257 on Standard Internals
16 February 2009, 12:26 PM
#1
Turbo Choice for EJ257 on Standard Internals
Hi all,
I am getting parts together for a 2.5 conversion. I already have the short block, Heads, FMIC.
The short block is going to be running standard internals aiming for around 350/350 so that I dont break the gearbox.
My question is what turbo would you go for with that? I have looked at MD321T's and 20g's. Is the MD a bit overkill for my power goal or would it spool earlier than a 20g and be worth the extra money?
Finally what size injectors should I be looking at?
Thanks,
Dave
I am getting parts together for a 2.5 conversion. I already have the short block, Heads, FMIC.
The short block is going to be running standard internals aiming for around 350/350 so that I dont break the gearbox.
My question is what turbo would you go for with that? I have looked at MD321T's and 20g's. Is the MD a bit overkill for my power goal or would it spool earlier than a 20g and be worth the extra money?
Finally what size injectors should I be looking at?
Thanks,
Dave
16 February 2009, 12:33 PM
#2
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MD321T is a 450bhp turbo so maasive overkill for your 350 goal, even a 20G will easily do 350bhp. The 20G should spool faster than the MD321T.
The M321H maybe worth considering, good for about 400bhp which will give u room for future improvements.
The M321H maybe worth considering, good for about 400bhp which will give u room for future improvements.
16 February 2009, 01:25 PM
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the 20G would be ample for your 350/350 needs, why pay extra for the H when youll get it all from the 20G and still have some horses left over 
injectors im not sure about TBH, i run a 20G on 550`s but im closer to 400 BHP, dont know if you`ll need 550s or not, you might get away with it
injectors im not sure about TBH, i run a 20G on 550`s but im closer to 400 BHP, dont know if you`ll need 550s or not, you might get away with it
16 February 2009, 01:26 PM
#5
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For 350/350 you don't even need to go as big as a 20G, TD05-16G or V34 will do 350/350 on a 2.5 with FMIC and be virtually lag free.
Fit a good quality FPR (eg Fuellab) with your 440s and they'll do 350bhp or go for 550s at std fuel pressure.
Andrew...
Fit a good quality FPR (eg Fuellab) with your 440s and they'll do 350bhp or go for 550s at std fuel pressure.
Andrew...
Last edited by AndrewC; 16 February 2009 at 01:27 PM.
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16 February 2009, 01:45 PM
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ST380 from Area 52 might be worth a look, I run one of these on a customers hillclimb car. Awesome response on a 2.5.
16 February 2009, 01:45 PM
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only done 800 miles too and in great condition
Last edited by The Stitcher; 16 February 2009 at 01:47 PM.
16 February 2009, 01:57 PM
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Try and find a 2nd hand 20g just make sure it's a genuine one. I paid £500 pounds for mine out of the classified section. Cracking turbo for the money.
16 February 2009, 05:12 PM
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