Topics

1

Wanted / Wanted 1980 Suzuki RM250/400 rear backing plate

« on: January 31, 2022, 05:30:10 pm »

Hi all,
         I'm looking for a 1980 RM 400 backing plate.  The 250 from the same year will also fit.


Cheers
Pete

2

Suzuki / RM400 Shock lenght Centre of eye to center of eye.

« on: December 30, 2021, 06:20:50 pm »

Does anyone know the correct shock length for a  RM400 [1980]


Cheers
Pete

3

Wanted / Suzuki RM400 T [1980]

« on: November 24, 2021, 01:44:08 pm »

Hi All,
           Thought I would look on here first before buying aftermarket.    I'm chasing a Fuel Tank and an Exhaust pipe for my RM400. 

4

Tech Talk / 86 RM250 Clutch problems

« on: October 20, 2021, 06:44:58 pm »

Hi All,
          I have a problem with the clutch on my 86 RM250.  I didn't rebuild the bike, but I have replaced the springs and metal plates with OEM parts.   The fiber plates look new and  measure 2.8ish mm thick which according to my Clymer manual is within spec.  [As are the metal at 2.00mm]The clutch cage is not grooved and in good order, it looks like the correct setup when I check the parts list. 

The clutch will not disengage, the plates are not sticking together and spin freely when not tightened down.   When you pull the lever in you can feel the cable trying to stretch, I have tried 2 new cables, same result.  No amount of adjusting helps, it feels more like a brake than a clutch.   The pinion release is straight and looks to operate fine. 

When I take out ether a metal or fiber plate,  it feels good and disengages, but unfortunately it then slips.  The only thing I can think is that the fiber plates are too thick despite what the Clymer manual says.   I have several older RM clutches and the fiber plates in them are all thicker so no use trying them.   

I have rebuilt several RMs from 80 - 87 and am completely stumped.   Maybe I can lock tight the spring bolts and back them off but am concerned they may com loose.     

Any suggestions will be greatly appreciated.

5

Suzuki / where to get hoses 87 RM125

« on: December 12, 2017, 11:11:57 pm »

Hi All
         I just bought some hoses from China  for my 87 RM125 the one from the pump to the radiator fits but the other 2 don't even come close .  [Yes I know I should have known better]  Can anyone suggest a supplier ?     Suzuki don't have any in stock.


Pete

6

Wanted / 1981 RM250X Suzuki

« on: October 21, 2017, 07:13:16 pm »

A bit of a long shot, but does anyone have a frame for a RM250X they would be happy to swap for some money ?   Mine needs some rust cut out, but I would rather swap it over and get the current one cut and welded later.

Cheers
Pete

7

General Discussion / 81 RM250X

« on: March 18, 2017, 05:11:53 pm »

Hi All,
          I just replaced my old damaged cases with a pair of new NOS ones.    the clutch shaft feels tight after I tighten all the screws.  Prior to that last tightening all is good.  It is in neutral and everything looks good.   All bearings are pushed right in and I have double checked all the washers etc.    But i noticed the new gasket I bought from CSML is a fair bit thinner than the original.     Would this make that much difference ? 

The old gasket is not bad but I would prefer to use the new one ?   I also have some Hyloma gasket goo but as the cases are new I wasn't planning on using it.

Suggestions welcome.

Pete

8

Wanted / 1987 Suzuki RM Swingarm wanted

« on: November 03, 2016, 01:50:47 pm »

Hi All,
         I'm looking for a swing arm for a 87 125.   The 250 possibly fits as well 88 models.   


Cheers     

9

Tech Talk / Timing and TDC for a RM

« on: August 04, 2016, 09:50:53 pm »

Hi All,
          So I have my new HPI ignition for my 81 RM250.   The instructions say ignition should be set at 2mm before Top Dead Center, but these are generic instructions that suit bikes across the board.   There is no mention of TDC in my manual does anyone know the  specs for a RM ?

I have read some stuff on line that pushing it out a bit will give more bottom end and less will allow it to rev more, but obviously there are limits.   Does anyone have any suggestions ?

Pete

10

Suzuki / HPI ignitions [Horse power ignitions in the UK]

« on: July 23, 2016, 02:25:23 pm »

Hi All,
          I'm looking at a new ignition from HPI in the UK for my 81 RM250.   They are cheaper than PVL [around 315.00 Aus plus postage] and look impressive they have a choice of 2 power curves one of which I hope will give me a bit more low down power. 

Has anyone had any experience with these ?  They don't have a dealer in Australia but are popular in Europe. 

Thanks

11

Suzuki / 81 RM250 Clutch is heavy

« on: March 04, 2016, 12:52:56 am »

Hi All,
          I have just rebuilt my 81 RM250 and everything seems to be ok, except the clutch is really heavy.   I have disconnected the cable and that seems ok,  they are the same springs that are within spec and  I have oiled the plates.  I  take the springs off and its all good, nothing sticking and all ok.    There is a little bit of grooving but not a lot, I have seen much worse.

I have never experienced this before, I'm waiting on the wheels to come back so I haven't started her up yet.

Any Ideas ?

Pete

12

Suzuki / 1981 RM250X

« on: January 22, 2016, 09:36:02 pm »

Hi All,
          I'm about to put my cases back together and they are pretty good but not perfect.    I have new gaskets but I'm tempted to use gasket goo as well, just to make sure.   Is this a good idea and what is the best goo ?


Pete

13

Suzuki / 1981 RM250X

« on: October 29, 2015, 09:08:16 pm »

Hi All,
          Does anyone know what the max rebore is for a 81 250 ?    Mine is a smidge over 68mm and there is no marking on the piston to say what over size it is.  I can fit a .130 mm feeler gauge between the piston and cylinder wall. 


Thanks

14

Tech Talk / Making Foot pegs

« on: September 15, 2015, 02:15:22 pm »

Saw this on You Tube.

https://www.youtube.com/watch?v=8NatiYBitAI

Custom Aluminum Footpegs - CNC Machined on HAAS TM-1

15

Tech Talk / Mikuni 38 mm round slide

« on: April 11, 2015, 01:01:16 pm »

Hi All,
         I have just put a new needle jet in my carb and it is not as long as the original, the main jet still goes in and is in the right place but there is no room for the round thing called the cup that fits above the main.   Anyone come across this before ?   Looks like it should still run without it but I assume its there for a reason.

Thanks