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Moeman



Joined: 19 Jul 2020
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Location: West Yorkshire

  

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PostPosted: Sun Jul 19, 2020 5:06 am    Post subject: Help french import  


Hello if this has been covered please accept my apologies
I have just purchased a rc45 it is a french import
Firstly how can I tell if it’s been derestricted already
If it has not
I’ve read about the ecu change and cams
Can these parts be bought new and if so the approximate cost
Thank you in advance
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Pask
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PostPosted: Sun Jul 19, 2020 1:59 pm    Post subject:  


Hi,

The simplest way would be to look if the ECU is marked with an ‘ED’, if that’s the case it’s likely the previous owner changed the camshafts but the only way I know to make sure is to dyno test it. The ECU and UK camshafts are no longer available from Honda. However, you could ask Stephen A’Lee of GT Motorcycles to dyno your bike and source the parts, he has a lot of contacts in the RC30 and RC45 world.

Regards,

Pask.
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Busy Little Shop
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PostPosted: Mon Jul 20, 2020 12:11 am    Post subject:  


Welcome... may I record your VIN in my World Wide Registry???

Full power rest inside every ECU. All production RC45s come with two
engine management maps inside their ECU: one limited for emissions
and the other for full power European trim. It's a simple matter of
cutting 3 wires and rerouting them to the other map. So modified the
rear wheel power will rise from 97.8 @ 10,000 rpm to 108.5 @ 12,250
rpm.

Experience has taught us full power is not ECU specific... you can
enjoy full power out of any ECU employing the HRC 3 wire mod...



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StephenRC45
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PostPosted: Tue Jul 21, 2020 3:23 pm    Post subject:  


This is not the case with the French restricted engine larry. The restricted cams require a very different fuel map compared to the "standard" engine.
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Busy Little Shop
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PostPosted: Fri Jul 24, 2020 3:41 am    Post subject:  


Stephen
Researching stock RC45 cams by part numbers shows they are
identical world wide except for the last 3 digits...

Whereas 94 French restricted cams are indeed unique as evident by
the last 620 digits...

Restricted
14110MW4620 CAM SHAFT COMP,FR
14120MW4620 CAM SHAFT COMP,RR
14130MW4620 CAM SHAFT COMP.,F
14140MW4620 CAM SHAFT COMP,RR

However the remaining world wide RC45s as listed employ full power cams as indicated by the 000 digits...

European Direct
94 UK
Canada
USA
Germany
Japan
Switzerland
Austria
Italy
Spain

Full power
14110MW4000 CAM SHAFT COMP,FR
14120MW4000 CAM SHAFT COMP,RR
14130MW4000 CAM SHAFT COMP.,F
14140MW4000 CAM SHAFT COMP,RR

The consensus is the 94 French cams are restricted (1.5mm less lift) whereas the remaining world wide RC45s are full power...
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Larry L
94 RC45 #2 / RC30 #44
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Last edited by Busy Little Shop on Thu Jul 30, 2020 7:56 pm; edited 2 times in total
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StephenRC45
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PostPosted: Sat Jul 25, 2020 7:17 pm    Post subject:  


French market cams have almost 1.5mm less lift than UK (full power engines) changed plenty over the years. This is also shown in the Honda service manual under cam specifications.

I had to convert a French model bike about 6 month ago and ran before and after tests on the dyno showing the improvements.

I have never seen a UK RS bike with a restricted cam however, all have been full power.

The fact remains you can not use a full power PGM (or map) with the restricted motor (or cams), been there many, many times with customer bikes.
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Pask
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PostPosted: Thu Jul 30, 2020 12:02 pm    Post subject:  


Hi Larry,

I must beg to differ in your statement that :-

’…. 94 French and 95 England cams are indeed unique as evident by the last 620 digits..’

I’ve taken a look at an online Honda dealer parts list website and checked 94 and 95 model years for all the countries you’ve listed (no Japan listing) and the only cams which have a unique part number are for French both 94 and 95 model years, with the last three digits of the part number being 620. All other countries camshafts part number ending 000. The French models only have a unique camshaft.

Regards,

Pask.
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Busy Little Shop
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PostPosted: Thu Jul 30, 2020 7:45 pm    Post subject:  


Thanks Pask
I followed up your lead and checked with CMS online parts and the 94 French cams are indeed unique whereas the 95 England cams are not...

French restricted cams (1.5mm less lift)
14110MW4620 CAM SHAFT COMP,FR
14120MW4620 CAM SHAFT COMP,RR
14130MW4620 CAM SHAFT COMP.,F
14140MW4620 CAM SHAFT COMP,RR

Full power cams for 95 England and the remaining world wide RC45s as indicated...
14110MW4000 CAM SHAFT COMP,FR
14120MW4000 CAM SHAFT COMP,RR
14130MW4000 CAM SHAFT COMP.,F
14140MW4000 CAM SHAFT COMP,RR
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Larry L
94 RC45 #2 / RC30 #44
https://www.youtube.com/user/BusyLittleShop/feed
http://s1036.photobucket.com/user/BusyLittleShop/library/ShangriLa?page=1
http://www.flickr.com/photos/55532474@N00/?saved=1
http://www.flickr.com/photos/10503451@N07/
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StephenRC45
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PostPosted: Thu Jul 30, 2020 8:24 pm    Post subject:  


As I said, you can not use a full power PGM (with or without the wire mod) with a French spec engine, you need the correct PGM.
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