Turbocharging an N/A Motor

[Irish_Mechanic]

I'm getting parts together to turbocharge my 88 N/A. I plan to use a stock turbo manifold, a stock turbo, intercooler, and other turbo related parts. Most cars, from my experience, can handle 5 to 7lbs of boost with stock air metering and fuel injection equipment. While i dont plan to run the boost higher than 7 lbs, i would like to know if anyone else has done this. I dont plan to swap the motor or even just the cams. If I get fuel cut I'm prepared to get an aftermarket MAF translator and possibly upgrade the part of the fuel system thats bottlenecked, beit the pump, or injectors.

If anyone's done this and has advice, it'd be appreciated. I'd like recommendations and vouches for distributors of these parts.

Thanks!

[Chambers]

I'm doing the same thing, I have everything ready but intercooler lines and wideban. I plan to turbo my NA with out swapping everything off the turbo engine. From what I am aware of, the NA do not have a fuel cut, but I could be wrong. I'm getting a wideban O2 sensor and gauge to make sure I don't blow my engine from a to lean mix. I would suggest you get that before you do anything, hook it up and make sure it works before you go putting the turbo on. I would also suggest you get a metal head gasket and ARP headware, otherwise you will pop a head gasket pretty quickly.

If you don't get a fuel computer you will have to adjust the timing and run high octane fuel so you don't have any detonation. I would also upgrade the spark plugs to a higher thermal level. If you end up not having enough fuel you can try using stock turbo injectors, thats what I'm going to do if I cant get enough fuel, but I think the pigtails are diffrent so some wiring would have to be done.

If you have the money and are willing to put it down for any kind of fuel computer I think you should. I my self want to see if the stock NA computer can compensate but I also don't want to blow my motor. Good luck.

[Irish_Mechanic]

Originally Posted by Chambers

I'm doing the same thing, I have everything ready but intercooler lines and wideban. I plan to turbo my NA with out swapping everything off the turbo engine. From what I am aware of, the NA do not have a fuel cut, but I could be wrong. I'm getting a wideban O2 sensor and gauge to make sure I don't blow my engine from a to lean mix. I would suggest you get that before you do anything, hook it up and make sure it works before you go putting the turbo on. I would also suggest you get a metal head gasket and ARP headware, otherwise you will pop a head gasket pretty quickly.

If you don't get a fuel computer you will have to adjust the timing and run high octane fuel so you don't have any detonation. I would also upgrade the spark plugs to a higher thermal level.

I agree, to avoid pre-detonation in a turbo motor, the highest octane rated fuel is ideal. the plugs will likely be the best iridium plug with a decent thermal rating i can get.

In the 90 talon TSI build i was involved in, the stock boost guage only went up to 14psi, so there was an 'A pillar' guage set installed to more acurately meter the boost (in excess of 26lbs). The OLD boost meter was then wired to the O2 Sensor! this gave a clear view of how the motor was running! sorta neat how it worked. i think i may try to find a turbo instrument cluster to swap in and i'm planning to do the same thing.

thanks for the advice! let me know how she turns out!

[mkiiisupra]

the stock turbo gauge does a poor job of measure boost and is very slow.

But if you want one just to hook it up to your o2 sensor let me know how you do it ill do the same once i get an aftermarket gauge in

[Chambers]

Originally Posted by Irish_Mechanic

In the 90 talon TSI build i was involved in, the stock boost guage only went up to 14psi, so there was an 'A pillar' guage set installed to more acurately meter the boost (in excess of 26lbs). The OLD boost meter was then wired to the O2 Sensor! this gave a clear view of how the motor was running! sorta neat how it worked. i think i may try to find a turbo instrument cluster to swap in and i'm planning to do the same thing.

Well you can swap the boost gauge out but you wont be able to swap the entire cluster, the restances on the tach are diffrent because of the coil vs. distributer ignition systems.

Originally Posted by Irish_Mechanic

thanks for the advice! let me know how she turns out!

Sure will! Good luck!

[Irish_Mechanic]

Originally Posted by Chambers

Well you can swap the boost gauge out but you wont be able to swap the entire cluster, the restances on the tach are diffrent because of the coil vs. distributer ignition systems.

so if i want to swap out the distributor for a cps sensor.... i'll need a couple of wires and a new tach? maybe i would be better off to just go Coil On.....

[Irish_Mechanic]

Originally Posted by mkiiisupra

the stock turbo gauge does a poor job of measure boost and is very slow.

But if you want one just to hook it up to your o2 sensor let me know how you do it ill do the same once i get an aftermarket gauge in

it took an Eprom chip for the mitsu.... guess i'll need to figure it out for toyota..... when i do i'll let you know where to find said chip.....