How good would a 1990 NA motor be with a Twin Turbo head on it? Would it blow up after a bit? or would it run pretty good?

~~Tangeray

 

I have never seen anyone do it. I'm thinking that if there was a performance gain, you wouldn't really feel it. Replacing the heads on these cars is a major job. It would almost be easier to do a swap. If you really want more power, but don't want to go through the headache of a swap,....just go out and buy a TT.

 

There is a guy selling an NA motor with a TT head on it allready. Im just tryin to find out if that setup is any good. I wouldnt want to drive a ticking time bomb ya know......hehe...

 

I don't think it would be a ticking time bomb....I just don't think it would be a mod that is worth paying a chunk of $ for.

 

actually the motor and tranny is 500 bucks...and it comes with the stock NA heads as a package deal.. Motor is apparently rebuilt. ALso comes with turbo exhaust manifolds, N/A exhaust manifolds, and 2 big boxes of other Z32 junk.

~~Tangeray

 

$500 might not be bad for the parts. The tt is a lower compression motor. I don't know if the lower compression is derived from the heads or the pistons. I'm almost positive that the tt heads have variable valve timing. I was thinking this past weekend about TT VVT heads on a n/a. With the idea being to have a vvt controller made to adjust the cam timing and then be able to run higher compression......... :rofl:

 

i would not do it. i would just do the tt swap.timing would not be a walkin the park.it woukld be el deablo in carnet.

 

:doh:

I thought you were the one who "built race engines"


The difference in compression in motors almost ALWAYS comes from the type of pistons used.

Also, all Z32s used the variable valve timing which has nothing to do with compression, what it does is retards the timing at lower RPMs to create mor torque. Its not something you can adjust to make more power like VTEC.

Third, TT and NA heads are almost identical, same cams, same dimensions. The only small differences being the type of material used on the exhaust valves and the TT head is ported to flow slightly more air.

 

I did.........

You're wrong......

Good to know......

You're wrong again.......

........ maybe, we'll see......

Again, good to know..........

 

Ok master engine builder

explain to me how retarding/advancing the timing changes the compression ratio of the engine :rofl:

 

O.k. punk, if you follow my travails in my goals of doing what I want to do, as opposed to following the rest of the crowd, like you....... you would now have learned the difference between static and dynamic compression ratios and compression pressure. You would then know, as I do now, that cams and their timing have a BIG impact on dynamic compression ratios.

 

because when people talk about the differences in compression and say "the tt motor has an 8.5:1 compression ratio" they are talking about dynamic compression right?

No where in this conversation was anyone talking about dynamic compression ratios, except in your mind.

Dont try to pretend you're better than me, if you really want i can get in depth with you about all the details of an engine. After all its what us engineers do.

 

Sorry Tangeray for destroying your thread........... :argue:

 

no worries man....i got the information basically I needed from teh post. Heres what I came up with...

~Turbo heads are going to be ported for more air/fuel.
~if the Motor comes with turbo heads on it for 500 bucks....then its an allright deal
~TT heads on an NA motor will not blow up somehow.

~thats all I needed... Thanks fellers

~~Tangeray :dancing:

 

Im the only one in this thread who answered his question truthfully.

 

All of you....go to your rooms. I work all day and have to come home to this crap...I don't think so.

But really, give it a rest.

 

if you dont have anything to say other than b*tching, then dont say it. too many threads have ended up like this lately, i have been a part of it too, so i am at fault as well

tangeray got what he wanted, so all of this can stop now

 

LOL ok dude. jaut cause it's U. I'll chill. so wat's up? when u gonna start building your Z back up? need any help? an extra pair of hands? i wanna learn man need help?

 

i asked him first, but he declined, saying that he would probably end up hitting us with a crow bar or intercooler pipe if he got pissed off.

but i do make a quick fridge run for your buds...

 

ehh f it. I do the same, so it's ok Im down. I won;t sew or anithign he's a cool guy I'm down. and I've bin hti with a crow bar before so it's cool.

 

You guys crack me up. At the rate I've been going, it'll never get done. I've been busy working on the house. I'll have to fix a water pipe this weekend that decided to break last weekend. I also have to install a garbage disposal here sometime soon. I'd like to get the water and EGR tubes back on this weekend. Then I can move on to the lower plenum and fuel rail. After that, it should go back together fairly easy.

 

hmmm

sounds like he could use a few extra sets of hands bardabe...ill go search on expedia for a ticket and bring my mickey mouse ears and tool box along for the ride

 

go for it dude. I'll chip in as long as we can kick back work on a mioghty Z and have a good time. lol
:headspin:

 

ok...anything else i need to delete?

While i may not always agree with everyone's point of view, i do enjoy a discussion of different opinions.
When we start calling each other names and swearing, then it has devolved from a discussion into a war of words. If I can help it, it's not going to happen here. Let's try to be civil and intelligent in our conversations please.