Renault 8 Gordini [MicroRusEFI]

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JRD McLAREN
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Renault 8 Gordini [MicroRusEFI]

Post by JRD McLAREN »

So, new build / project started. It is not my car, but I must start it. .... :mrgreen:

Engine is Alpine 1.4 liter with turbo ...
all wires and sensors must be produced and mounted.
I have no idea, what kind of trigger wheel will be used ..
..full seq or pair ...
"how to wire" ETB .. different pedal + different throttle body ...
not have fuel pump, 3+1 old injectors, one has broken connector ...

.. so too much fun ... on it ...
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Re: Renault 5 Gordini

Post by AndreyB »

According to https://rusefi.com/forum/memberlist.php?mode=viewprofile&u=923 you've only started two vehicles on rusEFI :( :P :P :P :P
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

No ..
it was 5 ..but it is not here ...
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

...so .. car have flywheel form Renault 5 Turbo ..
and it looks like Renix 44-2-2 .. https://github.com/rusefi/rusefi/wiki/All-Supported-Triggers#renix-4422

Image
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

..mm.. some update ..

this car is mess, everything is wrong ...
wrong pipes, wrong gaskets, wrong gearbox mechanism ..
wrong clutch mechanism, all hoses and pipes touch together ..

I have some "new" connectors, prepared wiring loom ...
and fabricated bracket for CKP sensor ... (and it works)
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

Can I ask ...
Renix trigger + CAM sensor ... will it run on full seq ..??

EDITED:
The answer is: YES
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

Piatok 13tého :mrgreen:
http://89.173.96.22/dohc/Renault8/DSCN5863.AVI
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

..and some photos ....

"CAM Sensor"
DSCN5852.JPG
DSCN5853.JPG
DSCN5854.JPG
INTAKE ...
DSCN5858.JPG
DSCN5861.JPG
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JPh
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Re: Renault 8 Gordini

Post by JPh »

You may have some trouble with this trigger pattern and RUSEFI because of the abnormal long male tooth then the long gap. I work on a more modern Renault engine that has the same configuration in 60-2.
The Renix trigger decoder is probably untested on real engine. Expect to have to mill the long male teeth to go back to normal gap sequence.
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

So, we can test it ... :arrow:
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Re: Renault 8 Gordini

Post by JRD McLAREN »

runnig engine:
http://89.173.96.22/dohc/Renault8/VID_20220517_191807-0-28x.mp4
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mck1117
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Re: Renault 8 Gordini

Post by mck1117 »

why not upload an unlisted youtube video?

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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

I have no google account ..
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Re: Renault 8 Gordini

Post by JRD McLAREN »

SO ... tune and log are online ...

I have some problem with trigger ...
and it is not "mechanical" problem ...
(checked many times)
CAM is single tooth on HALL
CRANK is RENIX with original renault VR Sensor.
All signals looks good on scope.


VR polarity change has no affect ...
(..it has .. it can start or can't strat)
(no trigger readrings with bad polarity, the same as my other car)
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Re: Renault 8 Gordini

Post by JRD McLAREN »

https://rusefi.com/online/index.php?vehicleName=Renault+8&user_id=923
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Re: Renault 8 Gordini

Post by AndreyB »

JRD McLAREN wrote: ↑
Mon May 23, 2022 5:00 pm
 I have some problem with trigger ...
What problem is that? How do you test and how do you know that you have a problem?
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

Ok ..
it's just a warning message... (LED is ON)

It's problem for the future or not ..?
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JPh
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Re: Renault 8 Gordini

Post by JPh »

The unstandart teeth pattern causes first tooth to be too long on signal. Conséquences are not clear for me yet.
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

Maybe, the same as 60/2 vs. VW60/2 ...
as we discussed before ..
it is the same "hardware" wheel .. but readings with HALL vs. VR is different
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

I have a problem with ETB and I need help ...

It is RENAULT ETB (see pic) and they "default" position is aprox. 5% opened
without power.
It can be fully closed "by hand" or by electric motor inside.

ETB Auto Calibrate can reach WOT and full closed state,
calibrate analog inputs values,
..but when MRE stop the power ETB's motor..
butterfly take it's "default" position -- 5% opened and I'm got an TPS ERROR message

(accel pedal not work at / after this moment)
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Re: Renault 8 Gordini

Post by JRD McLAREN »

Stock Renault ECU drive Idle with this ETB from 5% opened to 0% reversed polarity on motor wires
..and accelerate from 5% to 100% - normal polarity on motor wires

PPS 0-100% = TPS 5-100%
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Re: Renault 8 Gordini

Post by AndreyB »

please link your tune and a log of TPS movement from zero to 100 by hand
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

actual tune is here ...
https://rusefi.com/online/view.php?msq=1066

(I'm forgot write link)

Car is't at my workshop now, it's hard to test something at this moment.
We have short video on friend phone, I can upload it .. "somewhere" ..

I have one idea.
Can I calibrate TPS manualy from "default position" to WOT
and after that, have Idle control "from 0% TPS to -5%" ,, ??
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mck1117
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Re: Renault 8 Gordini

Post by mck1117 »

JRD McLAREN wrote: ↑
Thu Jun 16, 2022 6:34 pm
 I have one idea.
Can I calibrate TPS manualy from "default position" to WOT
and after that, have Idle control "from 0% TPS to -5%" ,, ??
Please do not do this. It's not safe.

The TPS error you see is a safety feature, intended to prevent the throttle from doing something unexpected, causing the car to crash (stuck throttle is very bad!).

Please make a normal log in TunerStudio (set communication data rate to maximum!) of TPS auto-calibrate, and moving the throttle open/closed with your finger.
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JRD McLAREN
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Re: Renault 8 Gordini

Post by JRD McLAREN »

will this help ..?
it is short log from "default position" to fully closed.

I can make full log by the next week ...

https://rusefi.com/online/view.php?log=893
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Re: Renault 8 Gordini [MicroRusEFI]

Post by JRD McLAREN »

So .. we have another problem with this car .. a year after ...

We have Engine Cutoff, after TPS (or PPS) reach 30% or more ..
it is drivable below 30% TPS with no problem, engine can rev 4500rpm or more ...
.. 1st 2nd 3rd gear was tested only ... but it has no sense ...

Can anybody check log files please ..??

(cause I have no idea what's wrong) ...

Thanks.

https://rusefi.com/online/view.php?log=1245
https://rusefi.com/online/view.php?log=1246

EDITED:
Logs are from rev.2022044..
..but it's the same on actual build - 20230605
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AndreyB
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Re: Renault 8 Gordini [MicroRusEFI]

Post by AndreyB »

Fresh firmware logs might have much more info and familiar data point names.
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JRD McLAREN
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Re: Renault 8 Gordini [MicroRusEFI]

Post by JRD McLAREN »

The car is 100km away from me .. at this moment ...

...but, we can try to use mechanical TB ... with cable ...
we still have "any problems" with this one .. (with this renault one)
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Re: Renault 8 Gordini [MicroRusEFI]

Post by JRD McLAREN »

So ...
we can't start engine on 20230605 ...

no spark and trigger error

tune: https://rusefi.com/online/view.php?msq=1491
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Re: Renault 8 Gordini [MicroRusEFI]

Post by JRD McLAREN »

no ignition events
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