T3/t4 50 Trim Install

[T5Hammy]

So I have a 50 trim, I need to buy everything needed for the install.

I'm gonna start with a parts list and ask a few questions, eventually I'm hoping to make this pretty much a complete walk through for anyone installing a t3/t4.

I have, a chinabay cheap fawking turbo, just turbo, no fittings, flanges, wastegate (I know what you wanna say, hold your tongue..err fingers, its just until I get to build my engine and put a big boy turbo on ) $120 shipped

I need:

Volvo-t3 flange adapter, obx $24 shipped

Oil Feed (turbo fitting, oil line, restrictor) $30 (what size fitting is needed to connect to the motor side on the oil line and what length line should be used)

Oil return, at least need a flange for the turbo side (whats the best way to make this work, I'm not opposed to jury rigging as long as its more cost effective than buying a new line) and again what size fitting to the motor side

Wastegate I'm gonna run an external, off of a divorced wastegate/dp flange (see below), this way I can port the crap out of the internal wastegate hole, and I don't have to weld a flange to the manifold.

38mm cheapo wastegate with dump tube (yup running a dump tube) and elbow from Godspeed $120

Blow Off Valve, no more cbv so its time to convert, not sure which bov to get yet, I'd like an ssqv but don't wanna drop more money on my bov than my turbo.

Well I'll just say ~40 for cheap china bov and aluminum flange

ATP DP flange with 2" wastegate port, 3" dp $28

V-band flanges and clamp (for easy DP removal) ~$20

For a down pipe I will modify my OBX DP to fit (have both straight and angled so should have plenty of scrap metal)

I think that covers the parts, Tuning will be through ARD, Planning to go down to Portland, jump on the dyno with Lucky, get a good tune for the 50 trim dialed in.

Looks like for under $500 including the turbo (not including tuning), I should have a budget set-up that will hold me over for now and probably be pretty fun to drive.

I'll try to keep this up to date and get a good write up when I install it!

-Brett

[850wagonT5]

You probably won't want to switch to a "big boy turbo" after you put this on...you'll be at 300whp pretty easily already.

For my setup:

-DP was custom made at a local muffler shop...using 2-bolt flanges and a metal gasket

-Oil feed uses undustrial Push-Lock connectors and Gates Lola hose (clampless connectors and hose rated to 300psi), ran a metric adapter off the block and the other fitting comes off your typical eBay feed flange that bolts to the top of the turbo

***WARNING: I had to drill out the oil feed hole on the chinese oil feed flange that bolts to the turbo; the hole is too small as it's shipped and the first turbo burnt up in a week from starved bearings***

-Oil return is just a chopped factory pipe with hose + hose clamps in the middle; don't worry about a slight kink as it's under 5+psi of pressure, not just gravity fed.

-Internal wastegate, after the eBay actuator got tired I welded a Garrett to the stock bracket...external seemed like more trouble than it's worth

-BOV is the eBay GReddy knock-off, mounted between the intercooler and TB, re-routed back into the intake pipe behind the MAF

ISSUES:

-The trans mount under the turbo will need to be ground down quite a bit.

-The wastegate flapper hole on the exhaust housing will NEED to be ported as large as possible or you WILL have boost surge issues.

If I think of anything else, I'll post it. Good luck...I love this setup! Bear in mind it's gonna spool pretty slow. I have nothing until above 3500. But after that - well, stuff gets "real." :)

[T5Hammy]

Sweet, thanks for all the info! Especially the part about the restrictor, I probably will run a standard oil fitting instead of the one with the integrated restrictor in that case. As far as bigger turbo, once its not my dd I'll go into full build mode for hopefully a 500+ hp car (I have a disease where i cant stop modifying cars lol).

I figure if I run the external off of the wastegate port it should be simple and I can bore the port up to 38mm (if there is enough metal to port it that large), should flow plenty to prevent boost issues.

for my feed I think I'll stick to braided stainless, but I like the return with hose and clamps.

Hopefully I'll have a complete write up for people in the future, maybe people will be more likely to go to the t3/t4 family if there is a good write up and a good tune offered, I know lucky saves all his tuning data so with my tune on file it should make it easy for him to tune other cars with .50 trims. I think once people see how easy it can be these will catch on over the td04 family.

[850wagonT5]

I'm on an ARD tune as well, on e85...AFRs are pretty good. And yes, its stupid easy. It took all of a couple hours, including the time it took to port match the turbo and manifold. It's barely harder than an oil change! Thanks for doing the write up. I hope some other people try it out as well. I'm really happy with it.