HELP! Can anyone resleeve an 08 RMZ250 barrel this thursday?

[Atomic]

Long shot I know! But, trying to get my mates 08 RMZ250 back in action for the easter weekend, the Nikasil has worn off and is suffering from piston slap. Should have the parts wednesday/thursday morning but need someone to bore and fit the new cast iron sleeve so I can get the bike back together by friday morning (all nighter I think!). Or can anyone recommend who I can approach in the auckland area to carry out this work?

Other option is spending a FORTUNE on a replacement barrel.

[barty5]

Long shot I know! But, trying to get my mates 08 RMZ250 back in action for the easter weekend, the Nikasil has worn off and is suffering from piston slap. Should have the parts wednesday/thursday morning but need someone to bore and fit the new cast iron sleeve so I can get the bike back together by friday morning (all nighter I think!). Or can anyone recommend who I can approach in the auckland area to carry out this work?

Other option is spending a FORTUNE on a replacement barrel.

Try Gk Automotive 5705336
he is doing my pw80 tomorrow and may be able to fit it in
tell him Aaron from newmarket auto repairs recommened him think he live out west some place which may make getting it back easy.

[Buddy L]

How many hours has that said bike done??
any reason why the lining has gone so soon?

[telliman]

hahaha, buddys freaking..

[Buddy L]

How many times has your bike been appart telli?, mines still a minter.
ive put on 55 hours and have hear of suzukis not likeing it at around the 80 hour mark. ( full over hual on the heads needed)

[Robert Taylor]

Long shot I know! But, trying to get my mates 08 RMZ250 back in action for the easter weekend, the Nikasil has worn off and is suffering from piston slap. Should have the parts wednesday/thursday morning but need someone to bore and fit the new cast iron sleeve so I can get the bike back together by friday morning (all nighter I think!). Or can anyone recommend who I can approach in the auckland area to carry out this work?

Other option is spending a FORTUNE on a replacement barrel.

Resleeving will lose a lot of power over recoating because there is a LOT of port alignment work that needs to be done with a right angle miniature die grinder, measuring equipment and LOTS of hours by a skilled and very fussy operator. This usually does not happen because either the end customer is reluctant to pay for what the job is worth or there are plenty who will do a half job, which it undeniably would be. To do so properly would cost the same or more than a new cylinder. It devalues your bike also, I would certainly pay less for such a bike.
With recoating I recommend sending only to the most reputable companies in either the UK or the US.

[Robert Taylor]

How many times has your bike been appart telli?, mines still a minter.
ive put on 55 hours and have hear of suzukis not likeing it at around the 80 hour mark. ( full over hual on the heads needed)

3 PRE-REQUISITES;

High quality 2 stroke oil e.g Motul 800, high spec Elf. 40:1

Suitable octane level fuel that precludes detonation / inaudible detonation, which kills motors.

Very fussy airfilter maintenance.

[telliman]

3 PRE-REQUISITES;

High quality 2 stroke oil e.g Motul 800, high spec Elf. 40:1

Suitable octane level fuel that precludes detonation / inaudible detonation, which kills motors.

Very fussy airfilter maintenance.

wat fuel do you recomend for these four strokes, i run half and half of race gas and 91?

[Robert Taylor]

wat fuel do you recomend for these four strokes, i run half and half of race gas and 91?

Substitute the 91 component for 96

[telliman]

How many times has your bike been appart telli?, mines still a minter.
ive put on 55 hours and have hear of suzukis not likeing it at around the 80 hour mark. ( full over hual on the heads needed)

your right, mine went at 116 hours(04), new crank, new barrel, bearings, gaskets, just done valves, cost me $3000 already, only paid $4900, will go brand new nxt year if efi on 250fs.

[nonferrous]

Resleeving will lose a lot of power over recoating because there is a LOT of port alignment work that needs to be done with a right angle miniature die grinder, measuring equipment and LOTS of hours by a skilled and very fussy operator. This usually does not happen because either the end customer is reluctant to pay for what the job is worth or there are plenty who will do a half job, which it undeniably would be. To do so properly would cost the same or more than a new cylinder. It devalues your bike also, I would certainly pay less for such a bike.
With recoating I recommend sending only to the most reputable companies in either the UK or the US.

RT very much appreciate the advise - any idea why a less than 10 hour RMZ 250 would strip the linining

[Atomic]

Try Gk Automotive 5705336
he is doing my pw80 tomorrow and may be able to fit it in
tell him Aaron from newmarket auto repairs recommened him think he live out west some place which may make getting it back easy.

Thanks Barty, I was gonna ring him first thing tomorrow but I am now taking into account Robert Taylors advice....

How many hours has that said bike done??
any reason why the lining has gone so soon?

Its only done 10hours!
The mechanic who diagnosed the fault is blown away at why its shat itself and could only put it down to either a bad/faulty plating job from factory or something bad has gone through the oil.
On the upside, my 08RMZ has done around 70hours, is still running original engine, original spark plug even! and Im not as anal with maintenance as I should be (average quality synthetic oil, clean air filter and oil after every second ride, oil filter every few rides, 91 octane gas...) and yet it has never missed a beat, I cane it pretty hard too. Must be luck of the draw, you get a bad one or you get a good one!?

3 PRE-REQUISITES;

High quality 2 stroke oil e.g Motul 800, high spec Elf. 40:1

Suitable octane level fuel that precludes detonation / inaudible detonation, which kills motors.

Very fussy airfilter maintenance.

Can you confirm that you recommend running 2 stroke oil in a 4 stoke? Wet clutch and all?

Cheers for your advice.

[Taz]

Resleeving will lose a lot of power over recoating because there is a LOT of port alignment work that needs to be done with a right angle miniature die grinder, measuring equipment and LOTS of hours by a skilled and very fussy operator. This usually does not happen because either the end customer is reluctant to pay for what the job is worth or there are plenty who will do a half job, which it undeniably would be. To do so properly would cost the same or more than a new cylinder. It devalues your bike also, I would certainly pay less for such a bike.
With recoating I recommend sending only to the most reputable companies in either the UK or the US.

Reading the OP it seems the sleeve is going in a 4 stroke (RMZ) so matching the ports doesnt apply?

[Taz]

...........................
http://www.motoxparts.co.nz/motocros...e=5&piece=1134

[Atomic]

Reading the OP it seems the sleeve is going in a 4 stroke (RMZ) so matching the ports doesnt apply?

Excuse my ignorance but 4 strokes still have intake and exhaust ports to match up...dont they???