OzVMX Forum

Marque Remarks => Yamaha => Topic started by: pancho on November 25, 2008, 11:38:31 am

Title: pre '70 rti
Post by: pancho on November 25, 2008, 11:38:31 am

my rti siezed half way through the 25 lapper at the nepean two day meet.the problems per list 1/.i now have 2 barrels and pistons that are rat-s!!!, and max oversize. 2/.the only financial supply is the o.a.p. [plus occasional lurky cash jobs].QUESTION, does any one know of a piston that is a bit bigger out of anything else that i could have my barrell bored out to take?the class is pre'70 500cc so big bore can only help make up for ability! cheers wally.

Title: Re: pre '70 rti
Post by: vandy010 on November 25, 2008, 12:09:49 pm

PM sent Wally

Title: Re: pre '70 rti
Post by: Freakshow on November 25, 2008, 12:27:05 pm

Wiseco go out to 8th over or 2mm

Title: Re: pre '70 rti
Post by: pancho on November 25, 2008, 04:07:24 pm

thanks for the response mick and freaky it looks like some possibillities, great!thanks again!   wally.

Title: Re: pre '70 rti
Post by: Noel on November 25, 2008, 08:31:18 pm

Hi Wally,
Talk to Nev.
I mentioned your problem to him the other day and he said he had a source.
Cheers
Noel

Title: Re: pre '70 rti
Post by: nifty on November 25, 2008, 08:42:28 pm

Wally,
Give me a call on 0418693663, what size are your barrells on now? Just had a crank re built by Craige down at MMT, couldn't for the life of me find an RT1 rod kit but we have now found one to match through PROX - gotta keep them RT1's goin!

Nifty

Title: Re: pre '70 rti
Post by: Freakshow on November 25, 2008, 08:51:28 pm

Actually what size piston are you after Wal ? i got a box of Wisco 250 -360 NOS here, is it reed or non reed ?

Nifty post the prox number so its online here for a resource  :)

Title: Re: pre '70 rti
Post by: nifty on November 25, 2008, 09:03:01 pm

Now you made me goin dig everything out of the pile - here it is : PROX 032304, make sure you you get the little end bearing to match.

Nifty

Title: Re: pre '70 rti
Post by: Nathan S on November 25, 2008, 09:40:18 pm

Quote from: Freakshow on November 25, 2008, 08:51:28 pm

..., is it reed or non reed ?

If its running as a pre-70 bike, then its non-reed.

I bought a stack of Yamaha pistons from jgroom888 on US Ebay, and paid SFA for them - but they only go to +1.00mm, and I keep forgetting to look for the larger (after-market) piston kits.

Title: Re: pre '70 rti
Post by: vandy010 on November 26, 2008, 01:21:12 am

http://ozvmx.com/community/index.php?topic=586.0

here's a link where the pro~x rod kit was mentioned too.

Title: Re: pre '70 rti
Post by: jimg1au on November 26, 2008, 10:31:38 am

i have 4 after market pistons for piston port rt1 yamahas after wally gets what he wants i will offer the rest for sale here
cheers
jim

Title: Re: pre '70 rti
Post by: Freakshow on November 26, 2008, 10:45:26 am

good point nat, i missed the pre 70 bit  :O)

Title: Re: pre '70 rti
Post by: Nathan S on November 26, 2008, 12:57:05 pm

Quote from: jimg1au on November 26, 2008, 10:31:38 am

i have 4 after market pistons for piston port rt1 yamahas after wally gets what he wants i will offer the rest for sale here
cheers
jim

OI!
 ;)

Title: Re: pre '70 rti
Post by: vandy010 on November 26, 2008, 05:29:45 pm

ok Jim, you got my interest too. piston curious Vandy.