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Changing from I6 to V8 


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Posted: Mon Nov 22, 2004 1:48 pm 
Getting Side Ways
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Age: 36

Posts: 11102

Joined: 15th Nov 2004

Ride: AU III XR8 Pursuit 250 ute

Location: Hobart
TAS, Australia

4.9 EF Futura wrote:
O, for the single exhausts on the 8's, do you have two cat converters, one after each side of extractors, or do you only have one cat converter after the Y pipe?

Spot on mate. 2x manifolds into 2x cat into y-piece. The main difference with the XR zorst is that it remains twin until the rear of the car, where it forms one pipe.

Also, what are underdrive pulley sets? Is this some common upgrade for V8's?

Come in various configurations but basically slow your altenator, water pump, p/s, a/c etc. which reduces the amount of parasitic drain these devices place on the engine. More kw left for the wheels. Fairly common as one of the cheaper mods for the windsor.

Cheers for all those answers.

What size cat converters would you use? 2 1/4"?

Besides touching engine internals, the ECU or transmission, are there any more common mods after extractors and C.A.I. (K&N filter and larger snorkel). I've heard larger throttle bodies and such work on the 8's? I guess you might not know though because you decided to force yours instead...



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Posted: Mon Nov 22, 2004 1:59 pm 
Getting Side Ways
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Age: 41

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Ride: V8 EF Futura

Location: Adelaide CBD
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There's more mods for these things than you can poke a stick at. You'll be using a MAF sensor once you go V8. These can be upgraded (std size around 55mm, im using a 73mm) and similar mods for throttle bodies.

Main problem is the heads and intake manifolds are extremely restrictive. Little point modding s**t too hard if you're gonna leave the standard E7 heads and HO manifold (FYI - AU motors have much better heads/intakes). Having said this, mine is stock heads/intake....



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 Post subject: Re: Changing from I6 to V8
Posted: Fri Nov 08, 2013 10:57 pm 
Getting Side Ways

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Ride: EL xr6

Location: Craigieburn
VIC, Australia




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