quick help needed

[Lozza]

I have bent flywheel tapers on cranks before after seizures at speed.It has definatly had a major seizure.You can have a major seize and not damage the bore.

[Doc]

yea, salvaged seized bores before with a little acid and a light hone when it was simple seizure but it appears all sides of the piston has been affected and the ammount of deep score damage seems a little unusual also Loz..as you say it could have happened more than once and no real history is known I dunno, all hypothetical but indeed a rare scenario..guess you're just lucky caps..usually I land on this type of thing

[caps 999]

got the roller stripped heres a pic

[LWC82PE]

yes original PE rear guards are well and truely into the rocking horse s##t category now. the only plastic repros out there are very poor to put it mildly and the few repro fibreglass ones around are usually not right either but i will admit there are a couple guys doing an OK job with the fiber glass ones. so original ones still in average to good condition that still have seom yellow colour left in them are quite sought after. Plastic restoration and repairs and plastic painting has come a long way in recent years and makes it worthwhile to hang onto parts like this.

[Doc]

Looks an okay sorta roller caps..pretty original what's the white Q sleeper in the background? 

[caps 999]

shes not bad  the old gts hq is stiitin there just what every garage needs makes a good anchor for the bike chains

[caps 999]

to mee the break in the crank looks more like a defect in the metal which has slowley progressed into s fracture

[Doc]

the old gts hq is stiitin there just what every garage needs

yeeees, I have the '53 4 door GTS Monaro..aka FJ Special sedan utilized as a mobile storage vessel that I'm soon to get stuck into and fix up...again

The crank could have simply been a dud too..highly possible with mass production

[cyclegod]

http://cgi.ebay.com/ebaymotors/1976-SUZUKI-RM125-RM-125-A-ALUMINUM-SWINGARM_W0QQcmdZViewItemQQcategoryZ34284QQihZ022QQitemZ350113163045

http://cgi.ebay.com/ebaymotors/1976-SUZUKI-RM125-RM-125-A-BOTTOM-END-MOTOR-ENGINE_W0QQcmdZViewItemQQcategoryZ34284QQihZ022QQitemZ350095943277

http://cgi.ebay.com/ebaymotors/1976-SUZUKI-RM125-RM-125-A-FRONT-FORKS_W0QQcmdZViewItemQQcategoryZ34284QQihZ026QQitemZ390003249401

[caps 999]

i tried for that swing arm and ive given up now its bordering on drug money  bloddy exchange rate

[cyclegod]

When it reaches those sort of prices it's probably cheaper to have one made 

[caps 999]

would you know any one who makes them 

[cyclegod]

would you know any one who makes them 

In Perth, I would take photo's of a period correct aluminium swingarm and my stock swingarm to Forbes and Mills engineering, he makes frames and such for drag racing so he knows how to build them strong. As long as what you have made looks correct you won't have any scrutineer probs either. It would be helpful if you asked that ebay seller for some dimensions just in case it's an inch or two longer and has different shock mount positions. If you ask some of your local dragbike racers where they get their bikes built it may give you a few leads.

[Rossvickicampbell]

CG - if you go to Forbes and Mills be prepared for the wait???

cheers

[caps 999]

i might leave the swing arm till last