OzVMX Forum

Marque Remarks => Suzuki => Topic started by: ranchak on January 21, 2011, 01:08:59 pm

Title: RM500 Oversize Pistons???
Post by: ranchak on January 21, 2011, 01:08:59 pm
I was thinking about coming out with a 1.00mm oversize piston for the RM500. Is there any interest? Would you rather have a .75mm piston? Is there anything else that you guys are looking for? Thanks, Ron

www.anchakandsons.com
Title: Re: RM500 Oversize Pistons???
Post by: suzuki43 on January 21, 2011, 01:56:30 pm
Hi Ron,speaking as the current owner of two RM500's, in my opinion both sizes (0.75mm and 1.00mm)would be of benefit, given the last Suzuki Oversize is 0.50mm.

Conrods for this model are amongst the hardest to find part I have seen as well.
Title: Re: RM500 Oversize Pistons???
Post by: LWC82PE on January 21, 2011, 02:24:00 pm
From experience, a lot of people leave re-bores too late for a .25mm increase in bore size or they get a score from some grit which doesnt clean up with .25mm so in that case you have to go to the next .50mm size, so i reckon its probably more worthwhile to go std-.50-1.00-1.50-2.00
Title: Re: RM500 Oversize Pistons???
Post by: ranchak on January 21, 2011, 02:39:44 pm
From experience, a lot of people leave re-bores too late for a .25mm increase in bore size or they get a score from some grit which doesnt clean up with .25mm so in that case you have to go to the next .50mm size, so i reckon its probably more worthwhile to go std-.50-1.00-1.50-2.00

This is what I was thinking, but I'm not the guy buying them (actually I am)
Title: Re: RM500 Oversize Pistons???
Post by: ranchak on January 21, 2011, 02:40:52 pm
Hi Ron,speaking as the current owner of two RM500's, in my opinion both sizes (0.75mm and 1.00mm)would be of benefit, given the last Suzuki Oversize is 0.50mm.

Conrods for this model are amongst the hardest to find part I have seen as well.

I have been looking for a suitable replacement, but I haven't found anything yet that will work. I had a rod that I was going to modify and then I find out it's discontinued!
Title: Re: RM500 Oversize Pistons???
Post by: maxi81 on January 21, 2011, 04:08:33 pm
What a bout a replacement rod for a RM 400T
Title: Re: RM500 Oversize Pistons???
Post by: ranchak on January 21, 2011, 04:10:58 pm
What a bout a replacement rod for a RM 400T

I've been trying to come up with replacement rods for the RM370, RM400, RM465 and RM500. I haven't found anything that will work or that can be modified.
Title: Re: RM500 Oversize Pistons???
Post by: LWC82PE on January 21, 2011, 07:48:19 pm
Are LT500 rods any good? Have you contacted BB importers? http://www.bbimporters.com.au I have got their con rod dimensions for everything they have got.
Title: Re: RM500 Oversize Pistons???
Post by: lukeb1961 on January 21, 2011, 08:19:51 pm
Are LT500 rods any good? Have you contacted BB importers? http://www.bbimporters.com.au I have got their con rod dimensions for everything they have got.
so stick it somewhere that people can view it  ;D
Title: Re: RM500 Oversize Pistons???
Post by: LWC82PE on January 21, 2011, 09:32:55 pm
Sorry i cant do that. I would if i could.
Title: Re: RM500 Oversize Pistons???
Post by: maxi81 on January 21, 2011, 10:17:17 pm
Someone has suggested that a KTM 360/380 con rod has similar dimensions to a RM 400T rod. Any truth to this??
Title: Re: RM500 Oversize Pistons???
Post by: LWC82PE on January 21, 2011, 10:26:51 pm
Yeah that was Lozza that said that so im pretty sure he has given correct info there. He would have the same rod dimension charts as i do, probably more also.
Title: Re: RM500 Oversize Pistons???
Post by: ranchak on January 22, 2011, 05:38:28 am
Someone has suggested that a KTM 360/380 con rod has similar dimensions to a RM 400T rod. Any truth to this??

I think the KTM/Maico rod is .5mm longer. I did a ton of research on this about a year ago and I could not find anything that would work , either OEM or aftermarket, that wouldn't require a spacer between the cylinder and the crankcases.
Title: Re: RM500 Oversize Pistons???
Post by: k2000x on January 22, 2011, 08:31:29 am
dont know why people want to keep rod charts a secret mate..heres a couple i found www.italkit.com www.rectificados-bellavista.com and www.jokersracing.com they dont have every make and model listed but could be a help even some of the jet ski rods on jokersracing...if all fails prox give them a call they faxed me a list of rods close to what i need with measurements
Title: Re: RM500 Oversize Pistons???
Post by: Lozza on January 22, 2011, 09:04:35 am
KTM 360/380 rod is the dimensions I posted the 0,5mm will not make any difference, just use a thick base gasket.
Title: Re: RM500 Oversize Pistons???
Post by: LWC82PE on January 22, 2011, 09:06:04 am
dont know why people want to keep rod charts a secret mate..heres a couple i found www.italkit.com www.rectificados-bellavista.com and www.jokersracing.com they dont have every make and model listed but could be a help even some of the jet ski rods on jokersracing...if all fails prox give them a call they faxed me a list of rods close to what i need with measurements

Its dealer info only, that is why i can not publicly post it, but if i have the dimensions i can look it up for you.
Title: Re: RM500 Oversize Pistons???
Post by: ranchak on January 22, 2011, 04:34:10 pm
dont know why people want to keep rod charts a secret mate..heres a couple i found www.italkit.com www.rectificados-bellavista.com and www.jokersracing.com they dont have every make and model listed but could be a help even some of the jet ski rods on jokersracing...if all fails prox give them a call they faxed me a list of rods close to what i need with measurements

I was going to do that, but I figured that I would be met with resistance and reasons why to not do that.
Title: Re: RM500 Oversize Pistons???
Post by: ranchak on January 22, 2011, 05:00:29 pm
I will probably be not doing the RM500 pistons at this time, doesn't seem like anybody is interested. Maybe later in the year.
Title: Re: RM500 Oversize Pistons???
Post by: AdamN on January 22, 2011, 06:58:04 pm
465 pistons then ???

Adam
Title: Re: RM500 Oversize Pistons???
Post by: LWC82PE on January 22, 2011, 07:14:37 pm
Ron, how about asking on the new suzuki 'Full Floator' forum?
Title: Re: RM500 Oversize Pistons???
Post by: VMX247 on January 22, 2011, 07:31:07 pm
Give the RM owner's 6 months into the season and they'll be knocking down the doors   ;D
cheers A
Title: Re: RM500 Oversize Pistons???
Post by: ranchak on January 24, 2011, 01:19:05 pm
465 pistons then ???

Adam

If there is enough interest I will do them.
Title: Re: RM500 Oversize Pistons???
Post by: ranchak on January 24, 2011, 01:27:41 pm
Ron, how about asking on the new suzuki 'Full Floator' forum?

Thanks Leith, I posted there. We will see what happens. I may even put something in my next VMX ad.
Title: Re: RM500 Oversize Pistons???
Post by: POM on January 27, 2011, 12:24:38 pm
I need a .25 o/s piston kit or even a ring would do,can anybody help?
Title: Re: RM500 Oversize Pistons???
Post by: ranchak on January 27, 2011, 01:52:05 pm
I'll check around and see if I can find anything.
Title: Re: RM500 Oversize Pistons???
Post by: AdamN on January 27, 2011, 01:57:04 pm
0.75mm o/s rings for a 465 would be good ;).

Adam
Title: Re: RM500 Oversize Pistons???
Post by: ranchak on January 27, 2011, 04:34:53 pm
I can't do just a reproduction ring, the order quantity is too high to be cost effective.
Title: Re: RM500 Oversize Pistons???
Post by: Tossa on November 08, 2011, 08:38:25 pm
So did anyone solve the problem of the RM500 Rod
Title: Re: RM500 Oversize Pistons???
Post by: seego on November 08, 2011, 09:25:03 pm
The only  solutions I have heard of is using a tm400 rod,but you have to bore the piston pin hole out to suit the larger little end pin size the tm 400 uses which I think is 20mm not sure, this info came from Rick Horvat in America as he has done this conversion with success.Or you can put a complete rm465 crank in the 500 casings as the 465 rods are still available but they are about 580.00 US just for a rod if you look up Alpha sports.And also the big end pins for the 500 are unavailable as vintage suzuki have sold out of them and not restocking at this stage. Other than these options us rm owners will just have to wait a while as someone will make them sometime we all hope!  :)
Title: Re: RM500 Oversize Pistons???
Post by: Lozza on November 08, 2011, 11:52:20 pm
Use the KTM 360/380 rod with a 1.00mm base gasket. Problem solved or is that too simple?
Title: Re: RM500 Oversize Pistons???
Post by: Tossa on November 09, 2011, 09:48:23 am
we have guy over here who has used a Yammie 80's model wr490, with two base gaskets and 3mm spacer
Title: Re: RM500 Oversize Pistons???
Post by: Tossa on November 09, 2011, 08:13:07 pm
wanted crank pin 12211 - 14220
Title: Re: RM500 Oversize Pistons???
Post by: nigmax on November 16, 2011, 11:44:46 pm
465 pistons then ???

Adam

If there is enough interest I will do them.

im interested,

Cheers
Nick
Title: Re: RM500 Oversize Pistons???
Post by: LWC82PE on November 17, 2011, 12:35:19 am
Nick, Contact Ron direct here if you wish

http://www.anchakandsons.com/
Title: Re: RM500 Oversize Pistons???
Post by: nigmax on November 19, 2011, 02:21:06 pm
Thanks mate,

Cheers
Nick