went over the threads and found the path to get started(nice work mr. admin). im buying a moter from a company called jdm engines inc. before i do dose anyone have good or bad comments about them. if the comments are bad then give a better place to go please.

 

http://www.jsamotors.com/?gclid=CKqF...FQQMZgodPUTbOg


use them ive delt with them before.shipping price is not that bad too. you can get every thing need. if you made a stand you have every thing to run the motor plus a trans some places wont sell the ecu ect.

 

thx for the comment. but the ecu is not a problom, i use megasquirt on all cars. are their any upgrades to the rotors( like the way of forged pistons) or is factory about it.

 

you know your chances of getting a jdm motor with good compression are extremely slim right?

 

i take it your new to these motor's. the great thing about them is ur able to use housing/ side plates/ rotors/ e shafts between a few different motor's

you mite be better off finding a motor in the states then swap parts from different gen's


iam a first gen 12aguy but i take it your going to get a 13b rew(is that the right term) from a 3rd gen or a cosmo rew thats all i have ever seen sold from the importers besides TII 13b's.

racingbeat.com
racing beat sells alot of stuff to upgrade the motor like lighter rotors ect.
link for rotors
go to there site and read the tech info. it says you can use a rx8 RX-8 eccentric witch is spose to be better lighter ect then the rx7.

it depends on what motor you want to use ect ect.

 

no i dont, as the other fella said im new to the rotory game. been playin with civics and neon every since god created rice racing. theirs still alot to figure like how to bump up compresion.

 

you can't. the most common cause for low compression is the loss or chipping of seals, only way to fix it is a complete rebuild, which costs about 1400 for the kit, not including any parts that need to be replaced.

your chances of getting a good jdm motor are 1 in 10.

nobody uses those lighened rotors, look how expensive they are, they stock ones work perfectly fine, i suggest you do several months worth of reading then make an educated decision

 

wat i ment was add more than factory compression. im guessing since the rotor keeps a consistent combustion chamber that timing woulnt help nore will shaving down the head. but r their ways to ad gurth to the rotor to cut down on the size of the compustion chamber.

 

The only way to change compression is to change rotors - eg, use RX-8 (Renesis) rotors in place of S5 or S4 rotors, or S5 rotors in place of S4 ones. It does seem to be common for JDM motors to be in need of a rebuild, so they are mostly a source of a core from which to begin - but it's still possible that either the housings or plates may have to be replaced if there has been extensive wear/damage.

 

ok thx so s4 is low compresion s5 is mid and renisis is high. it dosent need to be done today but at least by june so i have resurch time. i got it runnin today and it has potential.

 

not quite, N/a= high comp, turbo=low comp. and rx8 is a completely different conversation.
also there is no "head" on a rotary motor.

 

yes, thus forth y shavin it wount help. so the best way is to go with an na and put on a nice size turbo.

 

why don't you search rather than speculate???

 

becouse its easier to understand wen u talk to someone other than just reading a dictionary. thats y forums were made to discus with real people who know. all i have is to as u said speculate with 2 days of knowlege hear not an expert. so please dont try to b an internet bully.

 

i'm not being a bully, i'm telling you to read, no we're not here to hold your hand.

everything you could ever want to discuss has already been done many times over, so just search and read. you'll learn alot.

 

dont get me wrong but aren't the jdm motor more or less the same thing the the us spec. i know there where a few motors that didnt make it to the states ie 12aturbo 12a six port, and some of the older motors had slightly different ports.

i take it you looking for more power. you would be better off porting a turbo motor then making a na turbo.second gen na motor's most people dont even try to make more na power out of them,because of the port setup. do you know what VE is. piston motor's and stock port 13b's are under 100%. p port a rotary and it will be over 100 % VE. the only way to do that with a piston motor or stock port is to turbo it.
give more info as what your plans are. what gen motor do you want to work with, what are your goals ect ect