iam about to get a y8 head and put it to my d15b1 and get a d16 mpfi setup to /can anyone tell me what to expect out of this ecept 2 days of work// plus i have the 4spd trans and was thinking of goin to a si trans but i want to know the gear ratio for the 4spd thanks

 

u got an IM
hit me up in AIM chacofg
i can give u all the info u need and i got my car as a proof...

 

thanks i added u to my buddy list so when your on i can ask u ...thanks for the help all ive been getting is dont try it its to hard.......

 

i have a d15b1 with a y7 head and with a HP calculator from superhonda .com it said it makes about 130 hp runs a low 15 maybe high 14 depending on tires

 

y7 is that the vtec e iam sorry i dont have all the tec terms down but once under the hood i can figure **** out...but do u like the setup and did u convert to mpfi? id like to go all motor and get a little wrench work in myself... its to find but i like working on my car aslong as i dont have to work on it if u know what i mean..

 

the y7 is from the 96-00 civic dx.106 hp 103 torque.the vtec e is a d16y5 115 hp dont remember torque.DO THE MPFI CONVERSTION!


[Modified by 4gvtec, 7:17 PM 7/22/2002]

 

what kinda gain am i looking at plus with the 4spd shouldent i be able to run my gears out longer and be in vtec longer for street

 

its around 13hp.on the 4speed,the gears are so tall.once you get to 4 or 5000 then it runs the gear out.you want to get to your power band quick.you wont be able to with the 4 speed compaired to the 5.

i still have that dam thing!
hopefully i am going to be swapping motors again soon thats why i have not got the dx or si trans.

 

i dont recomend the si trans at all the gears are to short and it sucks on highway....i did the mpfi conversion one of the first in here probably to do it its kinda easy if u can hook up a radio in a car u can do it....the gains from the 70 hp stock are great it with all the lil **** i did it basically increased hp by 80% i have a d15b1 bottom end with the d16y7 head (non vtec) but since the compression chambers are smaller than the d16a6 and b15b1 witch are teh same it ups compression.....the y7 is basically a z6 head with no vtec soon im getting a cam for it thatll add 15hp thanks to someone who found a place that does a regrind for it..... and i have a z6 intake manifold witch im kinda leary of i dunno if i like it or not kinda took away top end witch i dont like and a b18a throtle body....i need a bigger exhuast i think this si exhaust is just to restrictive....i may try and run it open header and see wut it does wont hurt nothing but ears

 

im running a d15b1 bottom end and the stock top end w. cam. car is fully gutted and im in the 14's w/ it. i was going to p&p and mill an si head and slap that on there to yeild 12:1 compression. i think i may just p&p it and turbo it

 

if you are switching from the dual pont fule injection to multi point you will need to replace the fule pump, the dual piont pump I think is a lower presure pump and you need the higher presure for the multi point injection

 

no

 

not really...
for example..... the first cam lobe on a Z6 starts loosing power at 4600-4800... i got my vtec kicking at 4600 right now..... at that point... vtec kicks in around 20 mph until 35... then once u shift.. it goes under..and u dont get vtec until i hit around 44 mph... then u stay on vtec until 70 mph.... then u dont get vtec until u hit around 90 mph..... i am telling u this from the xperience i got on my 4 speed and the mini me..... kinds sucks being under vtec. , but the car doesnt say no and keeps going.... i rahter have a Si tranny ..... but u gotta deal with what u got....

 

teh si trans is way to short as soon as u lower tire pressure at the track u loose top end and if u were to have a dx trans it be about the same as teh si final drive