I have an 83 zx. I was wondering if a blow off valve would be a good mod for this car and if so how difficult is installation?

 

No. You run stock boost on a t3... you don't need a BOV.
I doubt you'll listen so I'll answer the rest...it's an easy install.

 

haha thanks i was just looking at them and i enjoy tinkering with small add ons in my free time

 

No your like me and everyone else who has a Turbo car. You want to here the sound it makes. lol

 

well i mean its always a plus to have some kind of a difference after u put somethin on ur car and plus this is the first turbo car ive owned im used to moddin n/a cars

 

From what I have heard (cus im learning myself) a BOV on a stock setup will make you run rich.

 

is there any way to up the boost on the stock turbo or would i have to swap it out

 

Mani Boost controler I beleave (again learning) I know you can go to 10psi but I know iv read about ppl doing 12psi. But im not sure about what there supporting mods were.

 

yea i wouldnt really wanna up it past 8 or 9 without doing some internal work i do know thats a little much at least on most cars

 

I'm sure there must be a writeup here giving very generalized guidelines on upgrading a turbocharged engine. If your car is in basically good shape it isn't the engine internals that will hold you back. It's the fuel. When you add more air you have to add more fuel to go along with it or you risk detonation. An ic isn't a bad idea either. And a better exhaust is a definite plus. Safe is a matter of opinion. To me 12 is the limit. Anything more is very risky and also out of the t3 efficiency range. That's just my opinion from personal experience. There are probably people here and there who have had bad experience at lower boost or good experience trying higher boost. It's best to take modification slow and well thought out.

 

how much can u up boost with a manual boost controller without having to mess with fuel delivery too much cuz im only looking for a poulnd or two

 

Been answered twice in this thread already. 10-12psi max running stock components. I blew a stock Felpro headgasket at ~12psi using an intercooler... so there ya have it.

MBC = not very reliable, and somewhat cumbersome, cheap (both in quality and price)
EBC = much more reliable, adjustable / tunable, greater cost, greater benefits.

I highly suggest investing in several Tuner / Turbocharger books before modifying your car. You need to know how these components work.

Start with:

 

that particular question wasnt answered but you answered sort of with a few extras so thanks

 

What is still not clear? 10psi max on a complete stock motor... 12psi w/ an appropriate size ic (there will still be a possibility of blowing stuff).

Anything above 12psi you'll need a wide-band a/f gauge, some larger injectors (310-370cc work by adjusting the AFM), and it would be wise to upgrade the turbo for 12psi+ boost as the stock T3 starts to lose efficiency.

 

you blew that headgasket cause it was a felpro piece of ***! they make every gasket good OTHER THAN headgaskets. at work i just sorted all our head gaskets, there were a few MLS headgaskets but none were actually manufactured by felpro themselves. if you want a headgasket, go to the dealer or go to an upgraded aftermarket, stay away from the rest in my opinion.

 

You blew a gasket at 12psi? I bet you didn't use another Felpro
I think a good ball and spring mbc is acceptable but definitely not the old bleeder style. I used a boostvalve.com mbc on my 85t for several years w/o a problem. If I still had the same setup as the 85t I'd be happy with an MBC. Funny you posted the Bell book. He doesn't care much for BOV's

 

Indeed... 2mm MLS head gasket & ARP head studs now. I was about 30 miles from home, at 2am when I blew my head gasket... that was a long night.

 

Im just happy im starting to answer Q's instead of just having to ask them. lol

 

I have a RFl blow off valve just like nismopick. I had a manual boost controller that nismopick gave me.. It spiked alot ! i thought for one second it was set at 10psi right... i have a external boost gauge when i took it out on the free way i thought 10 psi was good until i looked at the boost gauge 20 psi no joke ! after about 3 minuties there was alot of smoke out of my tail pipe " i blew the seals on the stock turbo " never the less i bought a Greddy pro 2 digital boost controller " i still havent installed it " im waiting to see if my friend will sell me his 1982 280zx 2 seater turbo for 2000 dollars