i know there is a sticky about this but it doesnt really say much on what is actually worth the money already got a pop charger, want to know if there is anything worth getting to make it any quicker, also im assuming getting different piping from the t-body to the filter wont really do anything?

 

Milled & Ported heads...
Bored block & bigger pistons...
Mild or hot cams...
Bigger injectors...

yada yada yada... there is a list as long as my, well, the list of possible performance mods is LONG.

 

no bolt on mods that really do anything?

 

Bolt on... Isn't most everything "bolt on?" There are lots of good books on modifying engines... you should check them out. I'm sure we'd all love to write a book in this thread, about mod'ing engines, but since there's 4.3billion books on this subject, I urge ya to visit the library, or use www.google.com

 

when i say bolt on im refering to things such as cold air, pulleys, exhaust, just wondering if any of that is worth it, my z is my daily and im not the most knowledgeable about them, im not ignorant to building motors though, i have a 93 mustang that is supercharged with a built motor just wanted to see what an n/a z responds well to is all

 

there are the unorthadox underpullys try looking at those. an exhaust will sure help hks is a popular one.

 

is the crank the only one really necessary for a gain? I see that they sell them by themself and unorthodox says that most of the gain will come from that, i just cant see spending $450 for a set of pulleys being worth that little amount of hp

 

If you are looking for a little extra power out of your NA, do this:

- intake
- exhaust
- UD Pulley

That'll give you an extra 20hp or so, it's your daily driver you really don't want to get into internals.

The NA Z isn't going to respond as well to mods as the TT, if that is what you are expecting. This thread has been brough up 1000 times before, please use the search.

 

alright so just buy the crank pulley then not waste the money on the whole set?

 

check the stage chart. should give you a good idea of what to do to get you where you want to be.

 

yea, just the crank pulley

 

Headers are good for some h.p.
You can add cams (bolt-on) without pulling the motor.
An SAFC, properly tuned on an n/a appears to be good for around 20 h.p. depending on other mods.

u/d pullies only free up h.p. that is consumed by the accessory drives. You could free up some more h.p. by eliminating the a/c and clutch fan. You'd then need to go to electric fans for cooling. I've also heard that electric fans alone don't do too well. You could then go with an aftermarket electric water pump for some more h.p. Reliability might be questionable there.

At the other end of the motor there is always a lighter flywheel and clutch assembly and an aluminum 1-piece driveshaft. Oh yeah, reducing weight = adding h.p.

I'd like to see some proof on the 20 h.p. gain on an n/a from the u/d pulley. I would bet that all of the accessory drive components put together don't even consume 15 h.p.

 

seeming as i have a highly modded 91 NA i'll help you out. You have the pop charger, Now get some full exhaust including test pipes, get underdrive pullies, after your pullies, get yourself some Stillen headers and bore them out and polish them. After that, get yourself and Ash-spec ECU. After you get your ECU then your pretty much done with your basic "bolt on" modifications. After that you will be dealing with boring the head, bigger injectors, running nitrous or things of that nature.

In reguards to the power gains from the UD pullies i must say there is a big difference. When i have my AC on there is a VERY noticible difference in my power/acceleration. I can't provide a dyno chart but i can tell you that the difference is large.

 

thanks alot for all your help

 

anyone got any n/a parts they wanna sell?

 

post a request in the wanted section of the "marketplace".

 

There is a noticable difference in power with the a/c on, when I used to build high performance toyota 22r motors on a dyno with the a/c running it would consume 15hp. That might be on the steep side but it's somthing to make note of.

 

also try a light weight flywheel and a aluminum driveshaft you can pick one up for $375 from importpartspro.com they are great your Z will rev quicker and get up to speed in a flash I have those to mods on my 91 and there is a big diffrence