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2006 yamaha blaster two stroke.does the cylinder need honing on a rebuid

Was told not to hone cylinder when rebuilding because the cylinder is nickel plated.cylinder is not scored

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Posted on Jan 02, 2017

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  • 3567 Answers

SOURCE: scored cylinders leading to an oil consumption problem

Several possibilities, one or all could have happened. Low oil level, not changing the oil filter and oil when needed, wrong type of oil, Spark plugs with the wrong heat range, not using premium gas, oil pump problems, air leak in the intake leaning the fuel mix, poor seal on the head gasket, bad exhaust valve(s), timing is off and a few other things. What is listed are the usual things causing an engine to overheat. If fuel injected, get that checked too. It could be a lean mix there. In any event, overheating is the cause. Now just find out what caused the overheating.

Please rate this answer. Thanks!

Posted on Jun 06, 2009

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SOURCE: When is cylinder honing required?

What is the compression on your scoot?
Honing is for small imperfections.If you can run your finger nail over Imperfection and it clicks or hangs up you need a BORE job..Honing is for very small issues. Seconhand parts also must be inspected and checked for wear.Mic the cylinder for proper specs. Please get back at me and Ill try to be of further service.

Posted on Jul 07, 2009

Porrelli
  • 167 Answers

SOURCE: can the ec 300 2001 model be honed or rebored and

Hi,
Most late modle MX & enduro (from about 1990 on plus some even earlier)
have what is called an electrofusion bore.
This is a very thin plating on the alloy cylinder. They use this so as to allow heat to dissipate quicker & can run tighter piston cylinder tolerances for improved performance.
To answer your questions,
No, they can't be re-bored(like the older style steel sleeved bore bikes could)
Yes, they can be honed but it requires a special type of hone(finger type bottle brush style hone).
Pistons are available increasing in size by much smaller incriments than the old style & are usually marked A,B,C,D(as the coating is much thinner than steel sleeve).
If it is scored very badly & you can see alluminum spots/scores anywhere on the cylinder surface there are several ways to deal with this.
Here in Australia there is a company(electrocill) that can re-cote the cylinder which is much cheaper(plus thicker & stronger) than replacing the barrel
If you have a cylinder re-coated It has to have all studs, seals & power valve assemblys removed.
You would also need to supply(or have them supply) a new piston in order for them to set the correct clearance.
Also here in Australia you can have most of the common models fitted with a sleeve & this gives you the abillity to rebore in the future.
In the U.S this company is known as Wisco(serco in Aust.)
It is worthy of noting that the piston rings are not interchangable between an electrofusion & steel type cylinder.(so if you opt for a re-sleeveing any spare rings from your spares kit ar of no use).
If you need a lead on how & if these services are available in your country(if your not in Australia) I suggest taking a look in the classified section of your local dirt bike magazine.
The trick is to undertake regular srevicing of your air filter(this is A MUST),oiling it properly with propper foam filter oil, useing a top quality 2stroke oil(motul,syn-lube for eg)
& regularly inspect & replace rings/piston as needed to get the best life from electrofusion or steel type bores
Hope this explains it all for you
Regards Andrew Porrelli

Posted on Dec 07, 2009

  • 8404 Answers

SOURCE: does the cylinder need honed before new rings its

since you are rebuilding this engine ... you should hone the cylinder for the best fit for the new rings.

Posted on May 16, 2010

agent91
  • 2100 Answers

SOURCE: do i need a special hone to hone a1996 kx250

You mean cylinder jug? You don't hone the heads, but they do have special tools for polishing the valve seats. Usually they just spin the valves with a drill motor and some grinding compound to get them to seat tight, water tight. The jugs are honed out with a big brush that looks like something a chimney sweep would use. It has polishing stones on the ends of the bristles. but, they do that after the jugs are bored, they have honing stones for crosshatching the bores, kinda smooths them out. If you don't bore out the cylinders, use one of them. Check it out.

Posted on Jun 17, 2010

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1 Answer

I recently completely rebuilt my 2001 rm125, I then ran it with the wrong jet needle, leaned it out, and scorred my cylinder, I then honed the cylinder with a cheap 50 dollor hone and put the jug back on...


replace the rings as they have lost their tension
make sure that they are free to move in the grooves as to score a cylinder normally results on the ring lands closing up on the rings and jamming them

Jul 29, 2017 | Suzuki RM 125 Motorcycles

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I have a scored piston in my Husqvarna 51 chainsaw. Can I hone out the cylinder and still use it?


You can do that. But it would not run as good or as long as it would buying both the piston and the cylinder housing. You either have to buy both or the try installing a new piston with new rings in it. It should give you enough compression to start it up. But it can't be guaranteed to last too long.

May 29, 2012 | Husqvarna Chain Saw Models 51, 55

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I have a Honda GC160 5hp that I just rebuilt but will not start


did you check the piston to bore clearances? did you check the ring end gaps? did you hone the cylinder and check it for roundness?

Jul 08, 2017 | Psi 2500 Mobile Pressure Washer 5hp Honda...

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DeWalt D55170 oil pumping ,scored cyls. Can a hone & ring replacement cure it?


It is possible to hone the cylinders and replace the rings to save the pump but don't remove too much metal as there are no oversized rings available for this type of piston/cylinder set. Also make sure to find out what caused the scoring in the first place and remedy that or you'll be replacing the cylinders and pistons next time.

Feb 12, 2012 | Air Tools & Compressors

1 Answer

Engine smoke


there are a lot of posability's mineral oils form carbon buildup in the rings over time as engine cilinder wear changing to detergent oil after years of mineral oil can flush out carbon causing engin to burn oil, or excessive ideling glazes the bore which causes oil consumsiom, both require cylinder hone and new rings, a hole in air cleaner will dust engine and score cylinder and wear main and big end bearings full rebuild required,but it can be simply a valve seal and oil leaks down engin valve or a blocked air cleaner causing the engine to **** air threw the polution nose sucking air and oil from sump

Aug 07, 2011 | 2005 Jaguar X-Type

1 Answer

The comresssor has lots of oil blow by which ends up in the tanks and hoses. The bottom of the jugs are a litttle scored and I will attempt to hone them. I don't know what size the bore has to get to...


In all my time rebuilding compressors I have not been able to find an oversized ring set for compressors. If light honing does not remove the scoring you will have to buy a new cylinder (Hitachi part number 885469). Hone only enough to get the scoring out and put in all new rings (Hitachi part number 885465) then give them a couple hours of running time to get fully seated. If you still have a lot of blowby you'll need a new cylinder.

Feb 04, 2011 | Hitachi EC2510E 5.5hp Gas Air Compressor

1 Answer

Does the cylinder need honed before new rings its a2001 yz 125 im new to these plated cylinders


since you are rebuilding this engine ... you should hone the cylinder for the best fit for the new rings.

May 16, 2010 | 2004 Yamaha YZ 125

1 Answer

Can the ec 300 2001 model be honed or rebored and honed?


Hi,
Most late modle MX & enduro (from about 1990 on plus some even earlier)
have what is called an electrofusion bore.
This is a very thin plating on the alloy cylinder. They use this so as to allow heat to dissipate quicker & can run tighter piston cylinder tolerances for improved performance.
To answer your questions,
No, they can't be re-bored(like the older style steel sleeved bore bikes could)
Yes, they can be honed but it requires a special type of hone(finger type bottle brush style hone).
Pistons are available increasing in size by much smaller incriments than the old style & are usually marked A,B,C,D(as the coating is much thinner than steel sleeve).
If it is scored very badly & you can see alluminum spots/scores anywhere on the cylinder surface there are several ways to deal with this.
Here in Australia there is a company(electrocill) that can re-cote the cylinder which is much cheaper(plus thicker & stronger) than replacing the barrel
If you have a cylinder re-coated It has to have all studs, seals & power valve assemblys removed.
You would also need to supply(or have them supply) a new piston in order for them to set the correct clearance.
Also here in Australia you can have most of the common models fitted with a sleeve & this gives you the abillity to rebore in the future.
In the U.S this company is known as Wisco(serco in Aust.)
It is worthy of noting that the piston rings are not interchangable between an electrofusion & steel type cylinder.(so if you opt for a re-sleeveing any spare rings from your spares kit ar of no use).
If you need a lead on how & if these services are available in your country(if your not in Australia) I suggest taking a look in the classified section of your local dirt bike magazine.
The trick is to undertake regular srevicing of your air filter(this is A MUST),oiling it properly with propper foam filter oil, useing a top quality 2stroke oil(motul,syn-lube for eg)
& regularly inspect & replace rings/piston as needed to get the best life from electrofusion or steel type bores
Hope this explains it all for you
Regards Andrew Porrelli

Dec 06, 2009 | 2002 Gas Gas EC 300

1 Answer

Scored cylinders leading to an oil consumption problem


Several possibilities, one or all could have happened. Low oil level, not changing the oil filter and oil when needed, wrong type of oil, Spark plugs with the wrong heat range, not using premium gas, oil pump problems, air leak in the intake leaning the fuel mix, poor seal on the head gasket, bad exhaust valve(s), timing is off and a few other things. What is listed are the usual things causing an engine to overheat. If fuel injected, get that checked too. It could be a lean mix there. In any event, overheating is the cause. Now just find out what caused the overheating.

Please rate this answer. Thanks!

Jun 06, 2009 | 2001 Victory V92 Cruiser

1 Answer

I have an xs 650 1980 yamaha I bought it having had an engine rebuild but one spark plug keeps oiling up and then runs on one cylinder. Thanks


There are only four ways for oil to get to the spark plug. Bad head gasket, bad rings on the piston, Cylinder scored or warped, and bad valve seals.
  • Start with the most likely, bad head gasket. When they rebuilt the engine they could have left out an oil seal 'O' ring. Check the head bolts. Did they tighten the top end down tight? Are you seeing oil on the outside of the head and cylinder? When the cylinder is firing properly, do you hear any head gasket leakage?
  • Do a compression check on both cylinders. This should tell if rings and valves are ok. Does the bike smoke most all the time when running properly? Does it only smoke when first started and when pulling away from a stop light? Bad rings will smoke all the time. Bad valve seals will smoke when starting out.
  • Scored cylinders are best checked with the head removed. Warped cylinders can only be checked with the head removed and by using a cylinder hone. The hone will reveal any low areas.
Chances are slim that you can avoid pulling off the cylinder head. Best wishes.
Please rate this solution after the problem is found. Thanks.

Mar 20, 2009 | 1980 Yamaha XS 650 G

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