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14b at 20 psi+ on my mods?

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Mike1992

15+ Year Contributor
3,338
26
Jul 19, 2003
Springfield, Missouri
Well I bought this car a few weeks ago after building it/putting it togeather for a local guy over the winter. I wrecked my VR-4, so he naturally gave me a deal on his project to get back into dsm's. Motor has about 15 miles on it and I'm finishing up the cam install and putting on my freshly ported 14b/manifold/o2 housing. Mods are

Ported Manifold/14b/O2 Housing, 2.5" Buschur Exhaust, Walbro 255, SX AFPR, PTE 780cc Injectors, 2g Maf, DSMChips Stage3, ACT 2600, Taylor Plug Wires, Extreme Intercooler 7" FMIC Kit, Turbo XS H34 Bov, Web 452/228 Cams, Boost Gauge

I wanna run the 14b around 20 psi or better daily. Friends say that I'll be blowing hot air and the turbo wont live long. I'm broke for now keep in mind.

Opinions/Idea's?
 
If the motor only has 15 miles on it... don't boost 20psi! You gotta break it in first! LOL Yeah, I'm joking, I'm sure you knew that. But 20psi on a 14b with your supporting mods should be fine. At 20psi, you'll be real close to maxing it out and blowing super hot air should be a concern of yours but if your intercooler setup is efficient enough you'll be able to get away with it. Good luck! :thumb:
 
Mike1992 said:
I wanna run the 14b around 20 psi or better daily. Friends say that I'll be blowing hot air and the turbo wont live long.
Based on what little I know I'd side with your friends. Considering that your options are run less boost or get a different turbo I'd say it's only a 14b and worst case you have to replace it so try it and see what happens.

Steve
 
I hope you are going to break it in witrh low boost or no boost for a few thousand miles first, it will be blowing hot air and it wont be as efficient, the FMIC will help out quite a bit but your best bet is to not run more then 18lbs on the 14b and when more funds come in, upgrade to a larger turbo. Also what do you have for a BOV? Stock 1G? Also since you are wanting to run it at 20 lbs+ are you stock gated or external? If stock or just internal you will get boost creep. So my advise is to break the motor in on no-low boost for 1500-2000 miles, dont run more then 18lbs on the 14b not because your set-up cant handle it but because it wont be as efficient, externaly gate it, and if you have stock 1G BOV crush it down 1/8" and it will be able to hold around 24lbs, and if its an aftermarket BOV then get a strong enough spring to handle your boost levels. Also what are the full dimensions of the FMIC L" x 7" x W".
 
Ultimatedsm said:
I noticed your running a FMIC. In that case let the 14B blow hot air, your FMIC will take care of it LOL.

Thats what I was thinking.

fourreGsixty3 I'm running the Turbo XS H34 BOV. Its adjustable, I got it on a trade deal so I hope it holds what I wanna throw at it.

Steve I guess I'll break the motor in on stock boost, maybe 15 psi. But last time I took it easy on a freshly rebuilt motor the rings never seemed to seat. :(
 
I ran the 14b at 20psi for a year with a fmic with no problems. I occasionally turned it up to 22-23.
 
im also running 20psi on my 14b and have no problems as he stated above if it blows oh well its a 14b:rocks: as for breaking in the motor i ran 8 psi for 500 miles not in anyway babying it. i do quite a good deal of 6k revs (prob 25+ just this week). if the motor is built correctly you should be able to mash it without fear:thumb: mine has 800miles on it and i drive it how its goin to be driven. after all do you dont spend 1000$s of dollars and pull all nighters working on the motor to baby the car do you:rocks:
 
14B isn't like the shitty T-25, it can take the abuse. Just remember to cool the sucker after hard runs thats all. The 14B flows pretty well for a stock turbo which is around 405 CDM compared to the 2g's 305CFM T-25. With a FMIC, you will see gains all the way to probably 22 psi. The key is to get it tuned properly and cool it down after runs.
 
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