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cracked exhaust manifold in tb42...
Posted: Mon Feb 14, 2005 8:01 am
by viperguy
noticed a large crack in my exhaust manifold couple days ago.. between the 3 and 4cylinder exhaust ports that runs 3/4's around the manifold. anybody else noticed this happen to theirs?
also, i have access to a standard manifold (free) or i got a price for hurricane extractors (220 supply trade)...would it be worth spending the money or should i just go with standard manifold? i have a 2 1/2 inch free flowing exhaust already. would extarctors make 220 bucks worth of difference? whats ur oppinions on this one?
Posted: Mon Feb 14, 2005 8:45 am
by adam.s
Honestly, probably not.
They really only help on older engines, where the factory manifold designs were pretty crap to begin with. Nissan seem to have always had half decent exhaust manifolds, even on their higher output sports engines, the standard manifolds flow better then what most people expect.
$220 isn't a huge amount of money, if you see this as a long term vehicle, go for it, you have to replace it anyway.
If you arn't going to keep this truck for very long, or are looking to do an engine conversion soon - just pick up a good std manifold for free/cheap and live with it.
Posted: Mon Feb 14, 2005 10:03 am
by planb
i was looking at fitting some extractors and a new zorst to my tb42, would be interested what results you get, if you fit the extractors.
who did your 2.5 free flow exhaust ?
Posted: Mon Feb 14, 2005 12:08 pm
by viperguy
ehaust was made by budget exhaust in merrylands...picking up extractors at 2.00pm. i think i should get them at that price since im doing the job anyway...will let u guys know how it all goes
Posted: Mon Feb 14, 2005 12:57 pm
by planb
nice,
when you say 'free flow' exhaust
do you mean a straight through system, no muffler, no resonator ?
Posted: Mon Feb 14, 2005 7:21 pm
by viperguy
i mean 2.5 inch straight through, zero offset free flow muffler and no resonator...sounds very lumpy, get asked if a v8 all the time..picked up extractors will be on tomorrow
Posted: Mon Feb 14, 2005 8:52 pm
by GUEEY
Disagree with previous comment ( Only good for old motors!)
i have a 4.5 GU and had Pacemakers fitted and a free flow Exhuast
2.5 with a muffler made by Luky for the VRX Magna (Free Flow but complying with db regs)
It made a HUGE differance from standard.
Posted: Mon Feb 14, 2005 9:18 pm
by adam.s
GUEEY wrote:Disagree with previous comment ( Only good for old motors!)
i have a 4.5 GU and had Pacemakers fitted and a free flow Exhuast
2.5 with a muffler made by Luky for the VRX Magna (Free Flow but complying with db regs)
It made a HUGE differance from standard.
Yeah well it just goes to show how shit Mitsubishi's manifold/exhaust design is
Nissan are years and years ahead of them
Posted: Thu Feb 17, 2005 3:46 pm
by viperguy
i finished the extractor fit up yesterday...the difference isnt earth shattering but definately noticable...lower operating temps, more responsive, slightly better speed at given revs...im happy with the decision i made. snapped 2 studs while removing old manifold...cost 120 for 2 helicoils.
so yeah, if u contemplateing exhaust work, extractors and 2 1/2 inch system works. nice burble too