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Maver
Site Admin
Joined: 14 May 2007
Posts: 2193
Location: naaaaaarfolk we drive tractors and talk loike PIRATES
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 Posted: Sat Jun 28, 2008 8:28 pm Post subject: |
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are the cranks "graded" to matched cases? "A" "B" "C" "D" sort of thing??
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suit scoot
Inspector
Joined: 17 May 2007
Posts: 451
Location: Costa del Redcar.
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| Posted: Sat Jun 28, 2008 11:57 pm Post subject: |
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| CheekyThomas wrote: | | But back to the main topic... 30,000km on the bottom end wont be an issue anyway, they will take it no question... even if you wanna use a new crank, the bearings should be fine as long as they are within tolerances still. |
its 30,000 miles. which is like LOADS more...
i'm gonna replace the big end regardless because its done alot of flat out motorway work.
i think i may have to go the road tune route.
its all abit uncertain so i'm just gonna upgrade my 250.
i've got a list of all the stuff i need to buy. 
bearings, piston + rings, new injection module, power commander from motorsports scooters usa, gaskets, malossi cam, valves and springs, and then theres the driven pulley at the back and the clutch. etc etc.
its gonna be in pieces for about 3 months like while the tranny cover and stuff gets painted up 
as long as it'll do a genuine 90mph i'll be happy 
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CheekyThomas
Guvernor
Joined: 18 May 2007
Posts: 1374
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| Posted: Sun Jun 29, 2008 8:57 am Post subject: |
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| Maver wrote: | | are the cranks "graded" to matched cases? "A" "B" "C" "D" sort of thing?? |
Yes but theres only two different options.... Cat 1 or 2. |
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CheekyThomas
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Joined: 18 May 2007
Posts: 1374
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| Posted: Sun Jun 29, 2008 8:58 am Post subject: |
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| 30,000miles still isnt many on a 4 stroke engine, the bearings dont wear much as they are always swimming in a bath of oil, i know these engines with 80,000km still going strong... |
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Rhoodman
Inspector
Joined: 16 May 2007
Posts: 151
Location: Oakham, Rutland
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| Posted: Sun Jun 29, 2008 11:51 am Post subject: |
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| CheekyThomas wrote: | | 30,000miles still isnt many on a 4 stroke engine, the bearings dont wear much as they are always swimming in a bath of oil, i know these engines with 80,000km still going strong... |
I think Russ had a VX 125 4banger Runner that had done in excess of 50,000 miles in the shop. It was in because the valves had not been adjusted, and had hit the piston
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CheekyThomas
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Joined: 18 May 2007
Posts: 1374
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| Posted: Sun Jun 29, 2008 1:07 pm Post subject: |
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4 stroke mains last well as lubrication is plentiful... 2 strokes are a different kettle of fish  |
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suit scoot
Inspector
Joined: 17 May 2007
Posts: 451
Location: Costa del Redcar.
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| Posted: Mon Jun 30, 2008 11:50 am Post subject: |
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well hopefully i'll be able to get it to go faster once i've added a few malossi bits here and there.
i just want more power!
and my birthday's coming up soon so i know what to ask my mum for 
"maaaam, will you get me a malossi cam, valves and a pm tuning magic box?"
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CheekyThomas
Guvernor
Joined: 18 May 2007
Posts: 1374
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| Posted: Mon Jun 30, 2008 7:06 pm Post subject: |
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Haha... lucky you... mine would tell me to ffff off.  |
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monty9120
Guvernor
Joined: 15 Nov 2007
Posts: 861
Location: North London
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| Posted: Mon Jun 30, 2008 11:25 pm Post subject: |
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| CheekyThomas wrote: | | Haha... lucky you... mine would tell me to ffff off. |
same with mine. or they would nick all the money 
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suit scoot
Inspector
Joined: 17 May 2007
Posts: 451
Location: Costa del Redcar.
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| Posted: Mon Jun 30, 2008 11:45 pm Post subject: |
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| CheekyThomas wrote: | | Haha... lucky you... mine would tell me to ffff off. |
i have a strange feeling she might when she sees the price of the stuff...
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old mod
troop
Joined: 31 May 2007
Posts: 27
Location: Auckland, NZ
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| Posted: Tue Jul 01, 2008 6:47 am Post subject: Glad about that Cheeky |
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Starting to read like a favourite bedtime horror story!
The requirements of putting in new bearings sounds daunting, and Maver's talk of new casings maybe better economically didnt help even if logical!
Reminds me of old Rover cars having heat shrunk in wheel bearings and having to carefully heat them in an oven.
So is Maver's suggestion more practical when this work is needed, and it will be one day?
Cheers
Old Mod. Dont turn the lights off tonight, eh!
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Was at Brighton '62, always ridden my scoots everday from then on, beginning to think I have a slight problem! |
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monty9120
Guvernor
Joined: 15 Nov 2007
Posts: 861
Location: North London
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| Posted: Tue Jul 01, 2008 11:06 am Post subject: |
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the trouble is gts engines are not widely avaliable seperately
i aquired a 200 runner engine easily and i could always get a 125 one and put the 200 top end on anyway
so if you tune tune tune and it goes bang, what you going to do buy a new bike
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GILERA NEXUS 500
DANGER HIGH VOLTAGE!!!!!
NORWICH BROADSMEN SC |
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