RX-8 winter beater project
08-06-13, 02:34 AM
#39
New problem :
Adapting modified OMP, i had to put back gears for stock OMP shaft. Originally i had FD eshaft gear and no gear in front cover (premix). Now i decided i will run S4 mechanical OMP (no space for electric one from S5/FD/RX8). Adapting was not too hard, thin blockoff plate and its on.
Assembling front cover back to motor revealed problem : FD gear on shaft vs rx8 gear in front cover does not work together. Sadly, i did not investigate enought and swapped gear in the front cover (for FD/FC one), it fitted, OMP shaft was turning so i closed it up and sealed.
Now with engine running on the stand, i cant seem to get OMP working and after one day of headscratching, replacing OMP's i go back to garage and check direction which OMP shaft is turning.
Yep, its turning other direction on motor than it should be
After looking at FC/FD front cover, explanation comes up.
FC/FD does have shaft under e-shaft, while RX8 on top. For that reason, they had to make mirror version of gears, they are interchangeable but you have to know which one you need.
And i was supposed to swap eshaft gear (ie - use RX8 gear on both eshaft and front cover, when using RX8 front cover)
Well, time to drain fluids, remove oilpan and front cover and swap it out, this time both gears.
Adapting modified OMP, i had to put back gears for stock OMP shaft. Originally i had FD eshaft gear and no gear in front cover (premix). Now i decided i will run S4 mechanical OMP (no space for electric one from S5/FD/RX8). Adapting was not too hard, thin blockoff plate and its on.
Assembling front cover back to motor revealed problem : FD gear on shaft vs rx8 gear in front cover does not work together. Sadly, i did not investigate enought and swapped gear in the front cover (for FD/FC one), it fitted, OMP shaft was turning so i closed it up and sealed.
Now with engine running on the stand, i cant seem to get OMP working and after one day of headscratching, replacing OMP's i go back to garage and check direction which OMP shaft is turning.
Yep, its turning other direction on motor than it should be
After looking at FC/FD front cover, explanation comes up.
FC/FD does have shaft under e-shaft, while RX8 on top. For that reason, they had to make mirror version of gears, they are interchangeable but you have to know which one you need.
And i was supposed to swap eshaft gear (ie - use RX8 gear on both eshaft and front cover, when using RX8 front cover)
Well, time to drain fluids, remove oilpan and front cover and swap it out, this time both gears.
08-06-13, 01:15 PM
#40
I like your project. it must be nice to be able to do your own fabricate your own stuff. i'm definitely jealous of that. sorry to hear the turbo crapped on everything though. good catch on the MOP gear. hope you get everything buttoned up and reinstalled soon. what are you doing for turbo? another Hitachi or something else?
question: I was able to figure out everything except the stuff you were trying to show in post 22 (the 3 photos of the main pulley bolt area. what was it that you had to do with all of that, and why?
question: I was able to figure out everything except the stuff you were trying to show in post 22 (the 3 photos of the main pulley bolt area. what was it that you had to do with all of that, and why?
08-06-13, 05:17 PM
#42
I replaced it already tonight, will verify function thursday (tomorrow is windsurfing day)
Set always have to be matching front cover (rx8 cover, rx8 cover gear, rx8 e-shaft gear)
Here are pics :
RX7 gear on shaft, RX8 gear in hand
RX7 gear on left, RX8 gear on right
Set always have to be matching front cover (rx8 cover, rx8 cover gear, rx8 e-shaft gear)
Here are pics :
RX7 gear on shaft, RX8 gear in hand
RX7 gear on left, RX8 gear on right
08-06-13, 05:25 PM
#43
I like your project. it must be nice to be able to do your own fabricate your own stuff. i'm definitely jealous of that. sorry to hear the turbo crapped on everything though. good catch on the MOP gear. hope you get everything buttoned up and reinstalled soon. what are you doing for turbo? another Hitachi or something else?
question: I was able to figure out everything except the stuff you were trying to show in post 22 (the 3 photos of the main pulley bolt area. what was it that you had to do with all of that, and why?
question: I was able to figure out everything except the stuff you were trying to show in post 22 (the 3 photos of the main pulley bolt area. what was it that you had to do with all of that, and why?
answer : RX8 front cover on REW iron and RX8 pulley - eshaft is sticking out of pulley, so you have to use some sort of spacer for main bolt to seat on the pulley and not on the e-shaft. I used there extra spacer which we all know
09-15-14, 02:11 PM
#48
project still in process
sold last motor in May and had to build new motor
specs as follows :
REW irons and housings,
RX-8 rotors machined for FC/FD apex seals
streetported
RX-8 6 speed flywheel, RX-8 front counterweight
custom oil pan (rx8 and FD pan welded together)
rx-8 oil pickup tube
LS2 coils
as of now, stock turbo
JTG ICOM liquid LPG tank with pump and injectors, controlled by Haltech PS2000
- engine is starting on LPG
after few days of testing it on the bench, its time put everything in the car and see how it drives....
sold last motor in May and had to build new motor
specs as follows :
REW irons and housings,
RX-8 rotors machined for FC/FD apex seals
streetported
RX-8 6 speed flywheel, RX-8 front counterweight
custom oil pan (rx8 and FD pan welded together)
rx-8 oil pickup tube
LS2 coils
as of now, stock turbo
JTG ICOM liquid LPG tank with pump and injectors, controlled by Haltech PS2000
- engine is starting on LPG
after few days of testing it on the bench, its time put everything in the car and see how it drives....
01-29-16, 05:52 PM
#49
update to the project:
ICOM injectors were quite small, something like 200cc each
Had to use 6 of them, firing 5&6 in batch - not liked transition.
Last week i had some spare time and changed setup to Bosch NGI2 injectors, 2200 cc each, running only 2 injectors total. No secondaries.
So far running good and no issue with transition
Will update with logs and duty cycles.
ICOM injectors were quite small, something like 200cc each
Had to use 6 of them, firing 5&6 in batch - not liked transition.
Last week i had some spare time and changed setup to Bosch NGI2 injectors, 2200 cc each, running only 2 injectors total. No secondaries.
So far running good and no issue with transition
Will update with logs and duty cycles.
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