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Power limits of the NA engine bottom end? 

 

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 Post subject: Power limits of the NA engine bottom end?
Posted: Sat Oct 24, 2015 11:39 pm 
Fordmods Newbie
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Age: 31

Posts: 5

Joined: 3rd Jul 2015

Ride: BF XR6 N/A engine with turbo

Location: Mildura
VIC, Australia

Hey people,
I've got an NA BF barra motor and it's got a turbo on it, all tuned and aet up properly. Does anyone know what the power limits are on these things?

 

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BF XR6 N/A engine with turbo. Process west tb relocation, custom intercooler piping, Garrett GT3582r, 3 1/2 dump pipe with separate wastegate pipe, 80lb deka injectors, underdrive pulley kit, battery relocation. Still using standard diff and ZF gearbox. 245rwkw and 725nm of torque on 8psi

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 Post subject: Re: Power limits of the NA engine bottom end?
Posted: Fri Nov 06, 2015 9:13 pm 
Fordmods Newbie
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Age: 51

Posts: 18

Joined: 6th May 2010

Ride: el falcon

Location: cairns qld
QLD, Australia

The weakest part in the barra motors are the piston connection rods if I remember correctly 450kwt is about as far as you would push it & stay under 6000 rpm other wise your looking for trouble or rebuild with better internals to handle more power than you have to fix the next weakest link gearbox, tail shaft diff etc hope this helps
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 Post subject: Re: Power limits of the NA engine bottom end?
Posted: Sat Nov 07, 2015 3:29 pm 
Getting Side Ways
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Age: 25

Posts: 4599

Joined: 30th Aug 2010

Ride: BF XR6,

Location: NEWCASTLE
NSW, Australia

ba n/a high comp bottom end wouldnt wanna be pushed over 250rwkw, you could go further if a tuner knew what he was doing but it would be a pretty soft tune, if your running the factory boost control from the pcm you can take out boost where it counts to save the bottom end,

 

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BF XR6
xr8 snorkel,typhoon lower snorkel,territory intake pipe,20% underdrive kit,pacemaker extractors,high flow cat,xforce exhaust,t56 conversion hd turbo clutch/ flywheel,m86 3.45 lsd,custom tune187.1rwkw as an auto

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 Post subject: Re: Power limits of the NA engine bottom end?
Posted: Sun Nov 08, 2015 12:40 am 
Getting Side Ways
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Age: 64

Posts: 3552

Joined: 7th Nov 2004

Gallery: 4 images

Power: 482 rwkw

Location: Penrith
NSW, Australia

Can go higher ? Depends on tune ? Always use 98 fuel.. A water / Meth kit keeps Pistons safe, improves octane and cools intake .. Win win..
http://www.alcohol-injection.com/en/2-w ... ction-kits

 

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As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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