47X AND 1GE WHAT THINGS ARE DIFFERENT ?

RZ-RD-RZV.... and everything in between

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Critchlg
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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#76 Post by Critchlg » Sat Aug 26, 2017 1:19 am

Hope I'm not hijacking a thread here. Happy to move it.
I'm restoring a RZ500 and finally got the servo cables to control the ypvs. After fitting them and the oil / throttle cable I noticed that the rubber servo boot didn't have any cutout for the oil cable. I checked other photos from the forums and found other rubber boots did have the cutout. Does this mean some bikes didn't have this cable therefore the oil flow isn't adjusted with the ypvs position?
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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#77 Post by jackson.40 » Mon Sep 18, 2017 3:06 pm

All 500's had the cable to the servo, that looks like a rd/dt125 servo cover

Steve

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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#78 Post by Critchlg » Sun Oct 15, 2017 8:19 am

Cheers Steve. I didn't realise another model cover could be used.


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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#79 Post by jackson.40 » Tue Sep 18, 2018 3:32 pm

47X bikes had damper part number 47X1531600 to keep the neutral switch wire away from the gearbox sprocket

Not fitted to 1GE bikes

Image

Image

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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#80 Post by V4 Heaven » Tue Sep 18, 2018 4:48 pm

I’ve been after one of those for bloody ages for my 47X!
Gettin' kinda squirrely!

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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#81 Post by jackson.40 » Wed May 22, 2019 12:58 pm

I just got hold of a rare nos inner rear mudguard kit and noticed a difference with one of the clips


On the 47X bikes the wiring loom clips are part numbers 90464-12027 and 90464-16021 (as used on the 47X pre-production bikes)

Items 20 and 21

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Image


On the 1GE bikes a different clip is used, part number 90464-10046 and 90464-16021 (x2) (Checked my 1GE pre-production bike and it has the 47X spec clip 90464-12027)

The 1GE pre-producton bikes do have a different set up to production bikes but that's another story

Item 20,21 and 22

Image

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Can someone check their 1GE bike and confirm this clip 90464-10046 was used in production?

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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#82 Post by silverstrom » Wed May 22, 2019 6:36 pm

On my 1GE clamp # 20 is similar to the one you have, but the three ribs are not there and there is a small hole instead...about 5 mm in size.
Last edited by silverstrom on Sun Aug 25, 2019 12:47 am, edited 1 time in total.

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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#83 Post by jackson.40 » Thu May 23, 2019 8:24 am

Thanks for checking John :cool:

I didn't think this clip was used on 1GE spec bikes, another mistake on the parts list.

I will check and see if it was fitted to the RZ500S.

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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#84 Post by steveho » Sat May 25, 2019 9:35 am

jackson.40 wrote: Thu May 23, 2019 8:24 am Thanks for checking John :cool:

I didn't think this clip was used on 1GE spec bikes, another mistake on the parts list.

I will check and see if it was fitted to the RZ500S.
Not so fast Steve.....!
My late model 1GE has it.... :cool:
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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#85 Post by jackson.40 » Sat May 25, 2019 9:57 am

Nice one, must be fitted to the RZ500S as well :cool:

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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#86 Post by ChequeredFlagRacing » Tue Aug 27, 2019 5:31 am

jackson.40 wrote: Mon Sep 18, 2017 3:06 pm All 500's had the cable to the servo, that looks like a rd/dt125 servo cover

Steve
Hi Steve
Do you know the part number for the 125 servo cover?
TIA
Yamaha FS1E 1975
Yamaha RD200 1976
Yamaha RD400 1977
Yamaha AS3 125cc 1978
Yamaha AS1 125cc 1979
Honda CX500
Honda MT125cc 1980
Yamaha TZ125G 1981-82
Zeger TC500cc 1983-84
Yamaha RD500LC 1985-87
Honda C90 1989
Yamaha DT175 1993
Yamaha RZV500R 2018

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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#87 Post by jackson.40 » Sat Jan 11, 2020 2:14 pm

ChequeredFlagRacing wrote: Tue Aug 27, 2019 5:31 am
jackson.40 wrote: Mon Sep 18, 2017 3:06 pm All 500's had the cable to the servo, that looks like a rd/dt125 servo cover

Steve
Hi Steve
Do you know the part number for the 125 servo cover?
TIA
34X8582500

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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#88 Post by jackson.40 » Sat Jan 11, 2020 2:19 pm

The 47X and 1GE carbs had different jetting specs and carb markings

47X Carb markings


Image

1GE Carb markings

Image

MK wrote: Fri Jan 10, 2020 8:03 am Differences between 47X and 1GE:
- Idle air jet 1.4 instead of 1.1 = more air at low throttle position = leaner mixture
- N-8 instead of O-0 = one size smaller diameter nozzle = leaner mixture at low/medium throttle position
- 165 instead of 195 main jet = less fuel at WOT = leaner mixture at full throttle
(this is only theoretical ; my own measurements showed original Mikuni jets with 165 (new) and 195 (old) flowing pretty identical amounts of fuel)
- The 1GE ignition curve has more advance at high rpm, which would require a richer setting.

The engines have not been altered, so 1GE and 47X "should" require the same fueling. It's just that the 47X was massively too rich in order to prevent engine damage.
Last edited by jackson.40 on Sat Jan 11, 2020 6:54 pm, edited 1 time in total.

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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#89 Post by MK » Sat Jan 11, 2020 3:25 pm

Folks, I don't mind citation.
But if a text is not your own, please add the origin.

A simple quote tag would help like:
jackson.40 wrote: I shalt not quote without telling where I nicked it.
Bye
Martin

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Re: 47X AND 1GE WHAT THINGS ARE DIFFERENT ?

#90 Post by jackson.40 » Sat Jan 11, 2020 7:01 pm

MK wrote: Sat Jan 11, 2020 3:25 pm Folks, I don't mind citation.
But if a text is not your own, please add the origin.

A simple quote tag would help like:
jackson.40 wrote: I shalt not quote without telling where I nicked it.
Sorry Martin

I have amended it, it was not my intention to nick your work.

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