2.7 3rz boost

I'm planning on putting a turbo on my 96 Tacoma. And I'm not real sure what size turbo/ how much boost a stock 2.7 can handle the motor just turn 200k and runs great I don't won't to have to do many supporting mods I would just like to get a little bit more power. And do y'all have any suggestions on how to make more power without spending a lot of money thanks.

 

It seems inevitable that when people bring up boosting a 3rz people say a v6 swap is the cheapest performance boost, so I'll be the guy to say it this time.

The engine itself can handle a fair amount of boost. 100% anecdotal evidence says you can get 30-40psi on the stock lower end, but you've got a long way to get the rest of the engine to that point. The stock fuel system supposedly can support up to like 3 or 4 psi.

In general it's not easy to squeeze more power out of a 3rz without upgrading a lot of other supporting systems. I have LCE headers and removed the balance shafts and it helped a bit but it's still by no means fast on 32s w/ 4.30 gears.

Check out LC Engineering or Paradise Racing.

 

Look at building a set up to make about 6psi. That will probably add about 60ish hp at the wheels. A noticeable difference. You can do that on basically stock fuel, but it will be a good idea to replace the injectors with some flow tested pink tops. Especially with 200k of carbon build up on your current injectors. An intercooler is ideal, but not absolutely necessary. I'm using a Precision 5431 with a .63 A/R exhaust housing. Pretty similar to a Garrett 50 trim. There are other companies that make turbos of similar size. Some guys use a .48 a/r for quicker spool and miss out on some top end power. Check out the turbo BS thread: https://www.tacomaworld.com/threads/turbo-bs-thread.481844/page-99#post-15802348
Lots of good info there. @Jstand on there just did a nice budget friendly build and is running on basically stock fuel.

 

The 8 port heads are better for the turboed 3rz with the stock head and block it’s reasonable to make 15psi at 300hp before anything comes apart, the weak point are the rods at higher rpm 5500+ at over 15psi. Though the head gasket and studs won’t hold at that psi for extended use, would recommend cometic hg and arp head studs. The fuel rail is capable of 300hp if the fuel system has been upgraded, 550cc injectors are a good middle ground and bigger fuel pump and lines helps significantly. The stock fuel system can support up to 8psi with stock injectors and pump at least in my case with the Haltech elite 750. The stock clutch can hold about 250-275hp if in good shape before slipping occurs it’s a good idea to get a 400hp clutch kit from lce. My entire set up has cost 3.5k and am pushing 350hp I would say it’s cheaper to turbo a 3rz than it is to swap in a v6.