What do I need to fit a 4g63t turbo to a 420a?

[Pozobyt]

Yeah, this may be a stupid question, but I found someone who is parting out his 99 gst and I wanted to buy the complete stock turbo set up from him. My question is, is there anything else I'll need to turbo my 420a, other than the manifold, and the adapter to fit the turbo?

this will be my first turbo project so I'm not very experianced. be easy on me ;D

 

[gusu]

Yeah, this may be a stupid question, but I found someone who is parting out his 99 gst and I wanted to buy the complete stock turbo set up from him. My question is, is there anything else I'll need to turbo my 420a, other than the manifold, and the adapter to fit the turbo?

this will be my first turbo project so I'm not very experianced. be easy on me ;D

I am not totally sure but I'd assume you'd need new injectors. I really doubt the 420a has the same size ones. I'd research that and if not pick up some stock 450s for cheap from a 4g63t. I think you also need a new intake to match up with the turbo but I could be wrong there too. As far as the maf and tuning goes I have no clue. You will defiantly want a new clutch for the extra hp you will have. I'd personally get a new fuel pump possibly something easy and cheap to install like a Wally 190 just to be able to run like 16 psi with out rusk of fuel cut. I can't really think of anything else but there are threads here on how to do it if you look for them. Sorry for the wall of text, I'm on my iPhone.

 

[akira235]

search the forums, theres tons of guys on here with turbo 420a's you will need at LEAST the following: turbo, oil line, water line, you need to get your oil pan drilled for the oil line, you will need an intercooler, the piping, and a blow off valve, you will need a new exhaust manifold (i HIGHLY doubt that the 4g63 manifold will bolt up. but I could be wrong) you will also need a method of tuning, and some decent injectors. theres probably other stuff I haven't listed, but thats the bare minimum. like I said, search

 

[Carter_95RS]

You'll need oil lines
intercooler setup,
12:1 fmu,
walbro 255hp pump,
manifold(hopefully you can find a t25 flanged one, all ive found is t3),
drill oil pan for return line
fabricate an exhaust off the turbo.
you'll need a new wastegate, since you wont be able to run more than 8lbs without upgrading the fuel system. theres a short list.

as long as you run 5-8 psi there is no tuning involved, or the need to upgrade your injectors. im running 7lbs, and my stock injectors are fine.

 

[Misterbeechy]

ive used the t3 manifold .. by a 16g to T3 converter and weld it up to ## mani.. and you'll be using a MHI turbo.. i currently use the T25.. with an external WG and soft spring.. u also need:

FMU 12:1
BOV
Intercooler
boost controller if ## spring is too soft
definitly need a boost gauge
oil lines.. feed and return

 

[VelocitàPaola]

Most of the turbosystem parts from the 4G63 will not be compatible with your car.

While researching what you will need, start here:

http://www.dsmtuners.com/forums/420a-turbo-conversion/366603-end-all-parts-list-go-turbo.html