Mazda Rotary Club

General => General Technical => Topic started by: jdm_turbo on January 13, 2010, 08:51:56 AM

Title: Lag time (for use with power fc) of FD3S 850cc injectors???
Post by: jdm_turbo on January 13, 2010, 08:51:56 AM
Hi folks, am looking for some info on the lag time of these injectors??

I believe there basically a sard 850 high impedance injector.

These are for use on my mr2 turbo which came from japan pretty specced up.

Hope someone can give me some info.

Thanks.
Title: Lag time (for use with power fc) of FD3S 850cc injectors???
Post by: AtomicRex on January 13, 2010, 09:17:47 AM
Are you sure they are a high impedance injector rated at 850cc?? Have these been tested??
 
Most of the higher flow injectors are usually low impedance
Title: Lag time (for use with power fc) of FD3S 850cc injectors???
Post by: m1tch on January 13, 2010, 09:27:29 AM
Are they like this:

http://www.rhdjapan.com/sard-850cc-injectors-8509

The lag time on the high impedance 850s are 0.85ms :)
Title: Lag time (for use with power fc) of FD3S 850cc injectors???
Post by: jdm_turbo on January 13, 2010, 09:37:00 AM
The injectors have been run in my mr2 turbo Since import, (and I imagine for a while in japan) they are high impedance (i measure 14ohms) and the resistor pack was bypassed. Which on the mr2 you need to do run high ones.

They are red top, have DENSO on the side and yellow tipped nozzles.

However my powerfc map was wiped, so trying to find out the lag time for a remap.
I\'ve found everything of 0.65 to 0.85 for these injectors. Infact one site had 3 different options for the fd3s 850ccs. 0.66, 0.76 and 0.85 roughly.

That website does say replacement doesn\'t it, which would mean stock replacement on the rx. Perhaps it is indeed 0.85.

I\'ll wait for some more replies just to be on the safe side. Thanks.
Title: Lag time (for use with power fc) of FD3S 850cc injectors???
Post by: jdm_turbo on January 13, 2010, 10:14:20 AM
site
http://paulr33.skylinesaustralia.com/docs/powerfc-faq/inj_side-en.htm
this has 3 different lag times for the fd3s 850...which one is true?? lol

my injectors (obviously with an adapter of some kind to fit in an mr2 rail)
(http://img.photobucket.com/albums/v326/jimbob_uk20/newRev5/106_1786.jpg)
(http://img.photobucket.com/albums/v326/jimbob_uk20/newRev5/106_1787.jpg)
(http://img.photobucket.com/albums/v326/jimbob_uk20/newRev5/106_0602.jpg)