do you know if have a big difference between the dx and si transmission.so if he have a difference do you know if i have more power or more speed.

 

wanna repeat that in english??? with a dx u have a higher top speed with the si u have a faster aceleration is that what u meant???

 

gears 1 thru 5 on a DX are the same as an SI, whats different is the final drive. all the gears on the SI are a little shorter because of the shorter final drive. the DX tranny is for better gas milage because of the taller gears. the SI tranny is better for acceleration.


[Modified by Fast 1point5, 5:27 PM 10/5/2002]

 

i believe the si tranny has better acceleration, hf tranny is good fuel economy, and dx tranny is good for cruising.

i could be wrong. but i think that's what it is. i remember seeing a chart somewhere that showed the different gear ratios and such. forgot where though. maybe someone else can help you out.

 

if your gonna boost would it be worth it to just keep the dx tranny if your gonna run a t3/t4, then go with an si tranny if you were to run just a t3.

 

thats the most retarded thing ive ever read

 

um ok. Look at it this way your running a t3/t4 with an si tranny chances are your not gonna be in full boost very long before you have to shift. dx tranny you gonna have more time to reach full boost and more time to stay in full boost. Now if you running a t3 on an si then its gonna spools much faster and you will prolly be at full boost by 2.5-3 k . If you were running a t3 on a dx it would really suck to have that turbo spinning it *** off and start to loss power high end. what so dumb about that? the most retarted thing iv seen is trying to hook up a honda motor with no hope.


[Modified by TEAM GARAGE SHIFTDOWN, 1:59 AM 10/6/2002]

 

i wondered about doing the dx tranny...... it seems basically like the people htat switch out their random bseries trannies for the LS trannyfor its longer gearing..

 

LMAO... I couldnt stop laughing ...

As far as Boosting with the DX Tranny.. I got 2 words for that.. **** NO, I have used the DX tranny all race season, with small turbos or big, it doesnt matter it just blows to much, the gearing is way to long. Plus it puts way to much of a load on the engine each time you shift. Not to mention the DX tranny has smaller main bearings and more prone to break.

Si or ZC tranny... for boost..

Jeff Frank

 

i dont think so,maybe the HF has smaller bearings but the DX is the same,only diff is that the Si has a 4.25 final and the DX has an 3.88 final.

 

So you're saying if I have my DX Final drive swapped out for an SI final drive I will have an SI transmission?

 

it should work but why when sohc si trannies are dirt cheap and thats alot of work to do to save so little money.

 

full boost means nothing. wtf is full boost? 1 psi 50 psi? t3/t4's usually are fully spooled by 2500-3000 rpm (its a t3 turbing side. t3/t4's are suposed to create the power (if you want to call it that) at the same rate that a normal t3 would. depending on trim at aprox 10psi. t4 compressors can do well over 30 psi.

are you talking about turbo lag? "more time to reach full boost" sounds like more lag to me. lag = bad = slow. the quicker it spools the quicker your under pressue, the quicker you have more power to the wheels, the quicker you accelerate. 100 psi w a trans that accels slow is useless against 100psi on a trans with shorter gears. the car which accellerates slower due to gearing will lose.

are you talking about t3 compressor or turbine side? I'll assume compressor. the t3 class on 1.8L's is usually good up untill 25psi before efficiencey comes into play. and turbos dont lose power the faster they spin, the faster air compresses, the more boost they produce (up to a certain point) then the wastegate will dump the excess boost off. once a turbo is at its maximum efficiency it'll stay there. it wont ever make less power than its optimum capibility.

the whole thing still. you have no understanding of turbos and how gear ratios work. Also what are you "hooking" up these honda motors to? you do the gas hybrid thing? thats pretty cool. i hope you have matching LED's for it y0.

does your same skewed theory apply to sc'd and nitro applications?


please know what your talking about before you post somehting as illogical as this. this kid wants to know the differences in transmitions. providing him w/ misinformation will only **** him over in the future. if you dont want to be flamed in the future please provide others with factual information.





[Modified by TorteX, 2:36 AM 10/6/2002]

 

somebody got owned ^

I'm sure you will be happy with an Si tranny, I would think you are looking for the faster acceleration then gas mileage.

 

wrong, ONLY difference is the final drive.

correct

yes

 

yes i would like to have a better acceleration.because the dx transmission is to long on each gear.