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Turbos For Rb20

jonohr32

By jonohr32,
in South Australia

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nos man Mentor

nos man

Posted
Posted

upgrading to lets say tomei stage 1 proncams would give you more lift and duratiopn and that'll improve mid-top range! but cam gears allow you to adjust them to bring boost on earlier and so, but i'm no guru so someone else might have to explain! but my plan is to just get an exhaust cam gear and run the standard cams which i was told it'll be better for the power i'm aiming for!

ovrtym33 Proficient

ovrtym33

Posted
Posted
how much of a difference would cams and cam gears make?

sorry to steal your thread but since its about lag and power

how would a gt3540 off an xr6t go on an rb25?

the gt35/40 from a xr6 is too big for a standard engine coz i think it runs a 1.06 rear exhaust housing internal gate, to make it more responsive maybe put a .63 exhaust housing on it

ive got a gt35/40 .82 housing and external gate on my forged rb25 engine and its still laggy even with cams and cam gears, what brings my boost on quicker is my 6boost exhaust manilfold but when it comes on to boost at about 3,700/4000rpm it hits HARD!!!!

ovrtym33 Proficient

ovrtym33

Posted
Posted
do aftermarket exhaust manifolds make much difference? any1 selling a decent one?

they suppose to give you better flow but are only worth upgrading to if you want a top mount turbo set up or using a bigger turbo on a lowmount setup, ive noticed the stainless steel manifolds crack around the welds, but they give ya exhaust note a crisper sound

if u wanna go aftermarket get a tune lengthed manifold made of steampipe

on a internally standard motor stick with the standard cast manifold and if u wanna run a bigger turbo use a spacer plate

SkyHi_33 Mentor

SkyHi_33

Posted
Posted
the gt35/40 from a xr6 is too big for a standard engine coz i think it runs a 1.06 rear exhaust housing internal gate, to make it more responsive maybe put a .63 exhaust housing on it

ive got a gt35/40 .82 housing and external gate on my forged rb25 engine and its still laggy even with cams and cam gears, what brings my boost on quicker is my 6boost exhaust manilfold but when it comes on to boost at about 3,700/4000rpm it hits HARD!!!!

Ahh I see, I'm not chasing too much power, id be happy with around 250ish at the wheels with response on standard block... trying to get the car setup for track/hill climb. Working on a budget and xr6t gt3540's seem to go fairly cheap.

SkyHi_33 Mentor

SkyHi_33

Posted
Posted
better off buying my gt30 hiflow and u will get 250 easy and not even much lag.

haha sounds good but i don't think i have the $$ you'd be chasing atm... just blew a load of cash on brakes and suspension upgrades hehe

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