scottyMIz Posted July 14, 2001 Share Posted July 14, 2001 Well like i've said before my 76zt runs great and tomorrow i am going to the track and i'll post times as soon as i get back.My question is to all the turbo guys.I was wondering how many guys can make their car break the tires loose just by hitting the gas in first?When i take off nicely and then just punch the gas it spools up and kicks the car sideways just a little but the tires are definately spinning.I was also wondering if any one's second feels slower than first?Mine does it seems to be screaming at me in ti's own way i'm starving for more boost.Well i'll probably check in one more time tonight and then tomorrow to post my times thanks. Quote Link to comment Share on other sites More sharing options...
TimZ Posted July 17, 2001 Share Posted July 17, 2001 If it's below 75degF, mine will do that in 2nd. If it's below 60 degF, sometimes it'll do it in 3rd . Okay - bragging over . I can't remember - are you using an intercooler? If not, your intake temps are probably rising, since you stay in boost progressively longer in each higher gear. If you are lucky, all this will do is make it go flat in the higher gears. If you are not so lucky, it could cause detonation. Quote Link to comment Share on other sites More sharing options...
scottyMIz Posted July 20, 2001 Author Share Posted July 20, 2001 Tim i'm running a big ic and it goes about 10 in first and 12 in second and then in third it hits 13.That's as high as it will go in any gear.You guys mentioned the exhaust cutting it back on top end boost but is it normal to boost low and build in the gihger gears?If you don't mind can you email me your phone number?Or something it would be easier to talk in person. Quote Link to comment Share on other sites More sharing options...
BLKMGK Posted July 20, 2001 Share Posted July 20, 2001 Higher boost in gears you sit in longer is normal. Usually on the top end it will start to get lower though from what I've seen. In lower gears you just don't seem to be in them long enough for boost to build Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted July 20, 2001 Share Posted July 20, 2001 Doesn't it have to do with load and heat energy? Extra load of the higher gear causing more heat which increases the spin on the turbine wheel which in turn causes more boost? That was my understanding at least, is that wrong or way oversimplified? Regards, Lone Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted July 20, 2001 Share Posted July 20, 2001 quote: Doesn't it have to do with load and heat energy? Extra load of the higher gear causing more heat which increases the spin on the turbine wheel which in turn causes more boost? That was my understanding at least, is that wrong or way oversimplified? Regards, Lone i think that would be true to a point, but at that point, it would have to be as if your engine was idling... everyone with a turbo knows that if you rev the engine while idling , the boost might come up a little, but it won't take off... but it does boost a little... all it's pusing is the pistons back and forth.... now if you add the car..with a low gearing, it might not reach full boost but at the same time you won't be laboring in that gear at all.. in essence you willl be screaming thru it... like blkmgk says.. your just not in that gear long enough.. In this case... (if full boost is not being realised in each consecutive gear) it might be a good idea to think about getting taller gears.... i mean... you know that feeling in a fast car when youve reached redline in fourth- how the hell did you get here so quick? you were just jamming the pedal and bam, your cruising at 112 mph, just like that ... hehe... off topic with that last part... just impressed with my car's duality, docile under 3krpm, punch it and alluva suddon im running out of room on the tack and have to shift.... not to mention that smell of burnt rubber when you park the car.... a little erie isn't it? you just want to do a 'lil high speed cruisin' and your losing rubber.... damn I love these z cars Quote Link to comment Share on other sites More sharing options...
GrayZee Posted September 9, 2001 Share Posted September 9, 2001 Yes I've always thought that low gears were not all that great with a turbo because of the limited experience I've had with turbos (I drove my friend's dodge 2.5 turbo and I found that it seemed to accelerate on the highway in 5th gear just as fast as if you had downshifted into 4th.. (in 4th it reved up higher, but in 5th the turbo seemed to kick in harder) but on the other hand why does the 200sx turbo have 4.11 gears? The reason I ask is because I recently located a 4.11 ratio for my Z but I'm gonna be converting to a L28t. Is it worth it to go to the 4.11? or would it just be a waste? (I have 3.54 with a 83 5spd 2.8 N/A now and it is a dog off the line) Quote Link to comment Share on other sites More sharing options...
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