strengthening 4G69 for high boost?
#1
strengthening 4G69 for high boost?
I've completed my engine swap (4G69 into OZ Rally / converted to manual) and I'm now beginning to plan for a turbo upgrade.
My motor has on it about 90,000km (55,000 miles) and other than a missing front o2 sensor (which makes the car run a bit too rich sometimes, but will be solved soon), the motor runs well and is a big step-up from the 4G94 I had before.
I plan to boost at about 10 to 15 psi eventually but I'm a little unsure if I should spend the extra cash on, for example:
- forged pistons
- brand new OEM connecting rods (or a stronger, aftermarket alternative -- anything available?)
- ARP head studs
- new gaskets, again, something aftermarket if available (??)
- new fuel pump and bigger injectors..
- p&p headstage/intake manifold (??)
Not sure if there is a need for anything else? I'm committed to achieving a reliable build over a short-lived street machine, so any advice on how I can ensure the motor will last a while is much appreciated. this will be my first turbo project
Thanks
My motor has on it about 90,000km (55,000 miles) and other than a missing front o2 sensor (which makes the car run a bit too rich sometimes, but will be solved soon), the motor runs well and is a big step-up from the 4G94 I had before.
I plan to boost at about 10 to 15 psi eventually but I'm a little unsure if I should spend the extra cash on, for example:
- forged pistons
- brand new OEM connecting rods (or a stronger, aftermarket alternative -- anything available?)
- ARP head studs
- new gaskets, again, something aftermarket if available (??)
- new fuel pump and bigger injectors..
- p&p headstage/intake manifold (??)
Not sure if there is a need for anything else? I'm committed to achieving a reliable build over a short-lived street machine, so any advice on how I can ensure the motor will last a while is much appreciated. this will be my first turbo project
Thanks
#4
Uvtunes@gmail.com iirc
Anyone have some suggestions for strengthening the 4G69, and if I need to go to these lengths with a 15psi boost?
#8
Evolved Member
iTrader: (5)
stock Evo/dsm rods would probably work fine for 10-15psi, but it really depends more on power output...pistons will need to be aftermarket, and you'll want high quality main bearings as well...
that being said you could probably find a set of used eagle or manley rods for a decent price. or someone who has them but never got around to installing them, and got rid of the car (that's how i scored an LSD and a clutch). Pistons i think are specific, i don't know if you can just use 4g63 stroker pistons or not...
that being said you could probably find a set of used eagle or manley rods for a decent price. or someone who has them but never got around to installing them, and got rid of the car (that's how i scored an LSD and a clutch). Pistons i think are specific, i don't know if you can just use 4g63 stroker pistons or not...
#9
stock Evo/dsm rods would probably work fine for 10-15psi, but it really depends more on power output...pistons will need to be aftermarket, and you'll want high quality main bearings as well...
that being said you could probably find a set of used eagle or manley rods for a decent price. or someone who has them but never got around to installing them, and got rid of the car (that's how i scored an LSD and a clutch). Pistons i think are specific, i don't know if you can just use 4g63 stroker pistons or not...
that being said you could probably find a set of used eagle or manley rods for a decent price. or someone who has them but never got around to installing them, and got rid of the car (that's how i scored an LSD and a clutch). Pistons i think are specific, i don't know if you can just use 4g63 stroker pistons or not...