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  #1  
Old 05-24-2005, 11:16 PM
nismo_pilot nismo_pilot is offline
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is it true you cannot boost a qr25de?

i was reading into mods for my 2005 ser spec v and i ran across a post that says the qr25 doesnt handle boost well. i was wondering if that applied only to the 2002 version or whether i would have problems with my 2005. i know the stroke of the engine requires new rods, but can you find rods that will handle say, 18psi of boost without shattering? and what will a turbo do to the life of a qr25? i thought i did a lot of homework about this car before buying it and now im getting a little nervous. any help would be appreciated


edit-4.10.07- QR25DE handles 8-10psi on stock internals semi-reliably given that the intake butterfly valves are removed to lessen low end torque, destroked versions have produced up to 550whp with custom parts

Last edited by nismo_pilot; 04-10-2007 at 09:05 PM.
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Old 05-26-2005, 05:49 PM
lude fan lude fan is offline
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I think that they're wont be any problem, but im not an expert, for more info go see these sites : www.b15sentra.net, www.specplace.com, and www.serboard.com. They will prbly be a great help fur yur futur project.
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Old 06-03-2005, 12:08 PM
gurov gurov is offline
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Re: is it true you cannot boost a qr25de?

qr25 handles mild boost okay. there's been at least one reported case of a stock-boosted motor putting uneven wear on the wrist pins after 20 thousand miles.

there's a couple of ways to go about getting beefier internals. definitly look into a block guard if you're going to tear your motor apart to put in stronger rods/pistons.
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Old 04-10-2007, 02:05 PM
blown05 blown05 is offline
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Re: is it true you cannot boost a qr25de?

hey man i have a 05 and i am boosting 14 and i drive it everyday. i have had no problems but i also have the A.E.M. stand alone sytem [E.M.S.] so its tuned but other than that its my daily driver and i am very happy with it
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Old 04-10-2007, 05:22 PM
woodzy86 woodzy86 is offline
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Re: is it true you cannot boost a qr25de?

there's no reason you can't do 8 pounds safely on stock motor....as long as you have good cooling, and you get a good system with fuel upgrades.......if you're looking for internals....importperformanceparts.net has everything you'll be looking for.....
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Old 04-10-2007, 09:02 PM
nismo_pilot nismo_pilot is offline
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Re: is it true you cannot boost a qr25de?

wow that post is almost 2 years old....... i think were going to have to abuse blown05 just a bit for dragging like 10 threads back from the dead
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Old 04-11-2007, 02:09 PM
blown05 blown05 is offline
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Re: is it true you cannot boost a qr25de?

sorry guys just got in the forums thought might help out. did u ever end up boostying ur car
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Old 04-11-2007, 02:10 PM
blown05 blown05 is offline
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Re: is it true you cannot boost a qr25de?

hey how do u start ur own thread cause i need some opinion on some ideas i have
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Old 04-11-2007, 02:51 PM
nismo_pilot nismo_pilot is offline
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Re: is it true you cannot boost a qr25de?

no i havent bewsted mine, ill be waiting for my vq for that
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9.02@ 84.4mph in the 1/8th....... Driver > Car
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