joeystritch

Im pretty new to engine building so i figured id look for a little help. Im looking to rebuild my d15b in my 94 civic dx, and i was wondering what are some good options for power upgrades without swapping the motor or spending a million dollars. its my daily driver so i dont want to do anything too over the top, just something to give it a little more go. any help is greatly appreciated. also, would it be just as easy to do a head swap and go vtech?

m_shake

You have much reading to do, i'd recommend d series . org or one cam only . com, these forums deal with d-series tech far more then i have scene here.

Simple list:
Compression
Cam
Head
Intake & exhaust
TUNE!!!

Just keep searching and reading and you'll learn alot with can only help you!

easy_vtec

D16a6 cam with a d16y7 cam gear good for 10hp or so intake exhaust 2.25 or 2.5 inch Max. Also a d16z6 transmission would really help and make it seem feel faster compared to most bolt ins

The cam and gear are about $25 at a junkyard $8 for a new cam seal from Honda I would start there!

xero_xero

you would be happy with a d16 *correction, yes i meant the b7 rod* rod and a y7 piston. wih this combnation and a z6 head you would need to run atleast mid grade or better. your looking at something a bit faster than a z6 motor with the head/piston/rod combo.

joeystritch

thanks for the help guys! also, easy vtech, can i use the d16a6 cam and d16y7 cam gear on my d15 head or would i need a d16 head for that? and xero xero, youre talking using the rods and pistons with a head swap correct?

Madmood

Please explain how you will put a d16 rod onto a b7 crank???

xero_xero

you have to use a b7 rod

combination stated clearly *and corrected*- d15 rod, y7 piston, z6 head.

there is an adddition to this. you can use a d15 rod on a z6 crank.

Madmood

1.6 rod wont fit on 1.5 crank... not even if you use duct tape... Dont put incorrect info.

Hello???

xero_xero

monkey joke retracted.

esteen2

I would have to agree with madmood. D16a6,z6,y7, and y8 rods all have a larger big end than a d15b2 or b7. To the op,Get an Si cam, y8 cam gear, timing belt & water pump, new spark plugs (maybe wires, cap & rotor), z6 intake manifold and throttle body, .040 milled off the head. And maybe a nice valve job if you have the funds.
Link: http://www.onecamonly.com/showthread.php?t=3567

xero_xero

a d15b has a 134mm rod legnth and a rod journal the same as a z6/y7/y8. d15b1/bb2/b7/b8 are smaller journals.

d15b vtec and non are verry common. anyone who has buil a number of d series would know this. a d15b crank will fit into a b1/b2/b7/b8. you must then use d15b rods, d16z6/y7/y8 rods are too long for ANY piston.

Madmood

LMFAO.... You may want to go in your garage and do some measuring... You are talking about sroke. NOT rod journal size... STFU!!!!! Shhhhhhh

esteen2

And since the OP is building a d15b7, he can't use a d16 rod. Im also not sure if he wants to be swapping cranks and what not since this looks to be a budget build. In my opinion the d16a6, and d15b2/b7 non vtec heads are better than the z6 head. Also onecamonly.com is madmood's site so I think he has built a d-series or 2 or 50.

xero_xero

good for you guys. why is he still trying to break 12 seconds witha sohc then?

y7 pistons will suit you the best. install them on the d15b7 rods, you will be fine. no height or clearance issues. mind when decking a head. some say .04 but that alone can cause valve clearances on y8 heads on a b7 block. i would say no to decking the head. it is easy horsepower, but not for someone who is not going to plasigauge the pistons to valves. mind vtec if you choosea vtec head, as you will need to lock in vtec to checkl clearances.

Madmood

When you can run mid 13's in a 2300lbs car powered by a 1.5L let me know. And you need to post things that are true.. All of your info is a total FAIL!!! You should just stay quiet in the corner.

xero_xero

nice try, but no.

Madmood

WRONG again! The d15b "vtec" is he ONLY d15 with rods that fit on any 1.6 crank.


Please stop giving out incorrect information.


OP .Get yourself a nice header & Intake combo, along with a good flowing exhaust . A good camshaft choice would be from Web Camshaft. Start from there and see how it goes...

m_shake

[QUOTE=Madmood;45680802]WRONG again! The d15b "vtec" is he ONLY d15 with rods that fit on any 1.6 crank.


Please stop giving out incorrect information.


QUOTE]

xero_xero

all d15b (vtec and non vtec) have the same rods.

good luck on your build op.

o yeah, unsubscribed.

Madmood

WRONG once again!!! The d15b vtec has the same length rods. Although the big end is the same as the 1.6. It is really good that you leave. You have no idea what you are talking about.

xero_xero

Civic 3 door, VTi, VTEC EG4-1315482 and Civic Ferio, NON-VTEC EG8-1318079 referance the SAME rod number, just called. theres the phone number 0334672151. same part number.

your wrong, honda OF JAPAN just confirmed. all d15b have the same bottom end. have a full parts inquiry as well.

Madmood

Gather all of the info you want.. Build them , and you will find out a different story... Just go away man. You give out all of the wrong info every time you touch the keyboard.

xero_xero

your a second rate tint guy who pays for his motor work. just confirmed and gave reference chassis numbers.

Madmood

lol. Yeah if you think so... But I build all of my D series stuff myself. If you call second rate tinting for movies , music videos , and Sports Stars. Then I am guilty. I dont think anyone would call the Lakers , Heat , Celtics players, Pimp my Ride, Ludachris, Xibit, etc.. second rate. Oh did I mention NFL star too??? Its ok. You are not worth it either.
Thanks for thread jacking this poor guys thread with all of your misinformation. If you knew how to turn a wrench, you might have the right answers...

xero_xero

your pretentios, i highly doubt you build your cars. maybe a cam upgrade but nothing more. oh, wait, stickers make it faster. my bad. your god.