can a na 300zx possibly beat a tt 300zx in autocross?

[igota20hpweedeater]

Could a na 300zx possibly beat a 300zxtt on a autocorss track?

[91300zxtt]

ummmm sure if the na was all built up and the tt was bone stock sure why not

[freakonaleash1187]

yes, the n/a would have to have mods on it to out race a stock tt.

[ZedEx]

Well think... Turbo's arent fully nominal until higher RPM (granted they do become noticable at around 3,000RPM)

So if the course would promote a lower RPM corner technique... Then yes I would say it may be possible.

We should try this some day

-wes

[neogenesis]

Well if you do play at lower RPM on the course, wouldn't it be an even or a driver sided race? Beucase the VG30DETT no longer becomes usable so it would act as a VG30DE right? The twin turbo serve no purpose in this race.

[ghetto7o2azn]

usually twin turbos are meant for low amount of lag... instead of having one big turbo you have 2 small ones which allows it to spool faster... this is why on twin turbo engines there is usually very little and sometimes unnoticeable lag... thats on most cars.. im not sure how fast the boost comes on a 300zx tt but i think its b4 3,000 which means that the turbos are usable in an autocross... ask an owner

[91300zxtt]

ya your rite it does come in lower than 3,000 its usually like 2000- im guessing 2500 thats just a guess tho cuz theres no # that says 2500

[longlivetheZ]

The turbos start spooling at around 2700 rpm...read that on twinturbo.net a while back and it really surprised me cuz that's really low.

When a TT is off boost, it's not just a TT-less N/A. The N/A engine's different then a TT engine. If you took the turbos off a TT, it'd be a slug because of the lower compression ratio. My uncle had an older Toyota 4runner turbo that was turbo-less...this thing was slower than anything I've ever seen. It's top speed was...like...50...if that. This is because of the lowered compression ratio.

[91300zxtt]

^ya you could be rite i said 2000-2500 just cuz i know its in the middle somewhere

[ZedEx]

Precisely LLTZ.

8.5:1 Compression ratio is almost nothing for a V6.

Incline 4 non-turbo engines such as KA24DE can get away with this.

But you have to think... 2:1 increase from Twin Turbo - Naturally Aspirated is pretty significant.

I think dead stock... Twin Turbo would still come out on top. Most of your Auto-X courses arent THAT tight... Maybe in a road rally the NA would win.

Like I said... We've got to try this one day

-Wes

[ZedEx]

Something just kicked me...

On sequential turbine set-ups, on such engines such as RB26DETT, 2JZ GTE, 13B etc. The turbos dont even kick in that low...

Now on a non-sequential set-up, such as the VG30DETT, how would the turbo kick in that low then? It would have to be up at about 3,000RPM correct?

Broke as **** ? You own a TT, talk to us man.

I cant give a 100% straight answer. Because we did have a Twin Turbo project car, granted the turbos were much larger. So the boost didnt even begin to become nominated until about 3,500RPM.

Once again... We need an owner to vouch here.

-Wes

[JCCR]

i change my pulley on my tt and i can feel diffence, my turbos kick in faster. before the pulley upgrade, i would say around 3000rpms

[freakonaleash1187]

in any car if you lower some kind of rotational mass (i.e. pulleys, flywheel, etc.), the car will rev easier. so that is why your turbos kick in faster.