People are just fearful of the compression ratio and the tuning, most people just crank up equal ammounts of boost and wonder why one blows and the other doesn't.

 

so toure saying bigger injectors and safc and fuel pump from fd and we should be safe?considering how we drive?

 

No, what I'm saying is it's all due to effective compression ratio, like I said (copied from NZ, sorry NZ!), is that about 10psi on a high compression motor is equal to about 12 on a lower compression, so if you're pushing your fuel system at 14psi on a stock turbo, imagine what that's going to be like on a high compression, in terms of similar power/psi/etc, that'll be around 17-18psi as an equivalent, so you can see why people tend to overdue their systems capabilities in a higher compression setup. (Yes, some of this is more than likely wrong, but it serves its purpose just fine)

 

oh i see, sorry for getting misled.:}

 

what? how about the racing beat full exhaust for turbo II is like 59 horsepower and for the n/a is like 27 hp and that is the full dual (i think thats close).

 

You didn't read the thread. They're not talking about a NON-Turbo 6port vs a TII, they're talking about a TURBO 6port VS a tII.

 

oh...well, so what. the 6 port turbo is more powerful than the 4 port?
BTW actually i did read it, but i can't speak english like that..

 

Yes, it is. The 6ports had higher compression than the 4port motors, and a few other factors result in a bit more power out of the 6ports than the 4port with similar mods/setups.

 

Alright, again I'm new to these cars, but isn't the stock Turbo II around 6 psi? The Fuel cut kicks in if you dial the boost to 8, so stock can't be much more than 6. All things equal, if you put a TII turbo on a NA, you would have more horsepower because of the higher compression rotors. However, You couldn't drive the boost up like you could on a TII - so yes, the answer is an NA with a regular TII turbo bolted onto it would beat a stock TII with the same turbo. At least once you stop spinning that one tire off the line, and while the clutch and transmission hold, and don't count on stopping as fast either.

 

Ok, first off, you don't NEED to drive the boost up as high, it's a waste of damn time. 10psi on a 6port is about the same as 12psi on a turbo, you catching the drift yet? Pushing the stock turbo to 16psi isn't going to make up for a 6port turbo running say 12 or 13.

Now, for the rest of the stuff you said, almost all of it isn't very accurate.

A) Some N/A's had limited slip differentials (GTUs/GXL/88 GTU)
B) Transmission will hold just fine
C) Last I checked, quite a few N/A's had the exact same brakes/suspension as the TII

 

Like I said, I'm new to these cars, so I can only go on what I've learned and what I've been told, and I think I came across wrong to boot. I'm not saying don't do it, because what he's talking about is almost exactly what I'm doing. But my 87 didn't come with the 4 piston front brakes, or the limited slip differential, and the main bearing on my 5 speed is already gone. I didn't mean to deter anyone, I meant it as more of an upgrade path. And I'm with 100% on the boost rates, what you're shooting for is a certain compression number (including the boost) so (warning, numerically inaccurate) if a turbo rotor makes 12:1 compression with 10 psi of boost, then a normally aspirated rotor (higher compression rotor) would only need like 8 psi of boost to make 12:1 total compression. As solid as a rotor is, with no connecting rods to fail, I couldn't see where it would care how much of your compression was because of the boost and how much was because of the rotor.
Believe me, I'm not against it at all - I've got an NA RX7 and I've got an s5 turbo sitting on the bench ready to go on it - I've got the 4 piston rotors and hubs in a box in the corner of the garage, waiting on tires for the new wheels, then once I locate a turbo exhaust manifold for the right price, I'll be right as rain if I can get confirmation the stock injectors will handle it. If not then I'll upgrade the stock injectors and get a Safc II and I'll be in business.
I don't know the particulars of the brakes, etc - but I had a feeling LSD NA's were in the minority. But once the turbo's on, I'm sure I'll be putting an LSD on it pretty soon after.