It just so happens that we needed a new liner or new nicasil. At first we were quoted 280,- for a new liner so we wanted to do this. But apperently this price is for big bores and not the 400.You can get steel liners for the big bores only. The 400 is only available in aluminium with nicasil coating and these were 435,- 8O So now we sent the liner to Powerseal and have it re-coated.
Hello Taffy,
Powerseal is a Dutch company: www.powerseal.nl.
I can tell you a price when I receive my invoice at the end of the week, but expect it to be less then 200 Euro
Powerseal is a Dutch company: www.powerseal.nl.
I can tell you a price when I receive my invoice at the end of the week, but expect it to be less then 200 Euro
Joined Jun 2001
1K Posts | 3+
Berkshire, England
Dr_C said:
Hi Dr C,
i've had two liners refurbished and it works fine. the first time however, the cylinder was very very tight and required some hefty bedding in. The second, which has run fine ever since has had a really good job done to it.
It is nicasil if I remember correctly and to get mine done it cost about 80 pounds sterling. The guy who does it is local to me so if you need it done, just give me a shout and I can check current costs and organise it for you.
Other than that, I have a nice liner sitting in my garage going spare at the moment - it is a reconditioned one :wink: I'll take some phots so you can have a look at what it's like.
Cheers,
Simon
Joined Oct 2003
955 Posts | 1K+
Sweden
1. That can be very helpful, thanks! Did you have to provide the actual piston for correct clearance? I have only used cast sleeves up to now (BC), so I'm not familiar with the process with Nicasil. I guess piston clearance is down to 0,03-0,07mm, or something, with Nicasil cylinders?Simon said:
2. Thanks again!
Apparently the sleeves 2001-2003 were coated with a material, softer than Nicasil. It provided lower friction but less wear resistance. Applied with a plasma spray method if I'm correct. From 2004 up, the sleeves are coated with a "Nicasilish" material.
/Dr_C
Joined Jun 2001
1K Posts | 3+
Berkshire, England
[quote="Dr_C1. That can be very helpful, thanks! Did you have to provide the actual piston for correct clearance? I have only used cast sleeves up to now (BC), so I'm not familiar with the process with Nicasil. I guess piston clearance is down to 0,03-0,07mm, or something, with Nicasil cylinders?
2. Thanks again!
Apparently the sleeves 2001-2003 were coated with a material, softer than Nicasil. It provided lower friction but less wear resistance. Applied with a plasma spray method if I'm correct. From 2004 up, the sleeves are coated with a "Nicasilish" material.
/Dr_C[/quote]
Let me check the details on the lining material, I do stand to be corrected on what it is but I do know it can be "re-applied" OK.
I didn't have to provide a piston. I'll get me measuring kit out and measure up the piston clearance.
Cheers,
Simon
2. Thanks again!
Apparently the sleeves 2001-2003 were coated with a material, softer than Nicasil. It provided lower friction but less wear resistance. Applied with a plasma spray method if I'm correct. From 2004 up, the sleeves are coated with a "Nicasilish" material.
/Dr_C[/quote]
Let me check the details on the lining material, I do stand to be corrected on what it is but I do know it can be "re-applied" OK.
I didn't have to provide a piston. I'll get me measuring kit out and measure up the piston clearance.
Cheers,
Simon
Joined Nov 2001
17K Posts | 774+
Ely, England
well it won't be a chromium bore!
i think gilnasil means the same as niksail coating (also sprayed on BTW!) i would supply a new piston as an example.
i have the figure of .0015" per inch of bore on an air-cooled duke. however dale has quoted far larger figures than this which i found suprising but all the same correct.
so 100mm = 0.006" piston to barrel by my figures but i've seen somewhere quoted - as far larger figure.
go figure!
regards
Taffy
i think gilnasil means the same as niksail coating (also sprayed on BTW!) i would supply a new piston as an example.
i have the figure of .0015" per inch of bore on an air-cooled duke. however dale has quoted far larger figures than this which i found suprising but all the same correct.
so 100mm = 0.006" piston to barrel by my figures but i've seen somewhere quoted - as far larger figure.
go figure!
regards
Taffy
Taffy said:
The 0.006" piston/cylinder clearance seems way to much for a 100mm piston. For example, the factory clearance for a 95mm KTM piston is 0.002 - 0.003".
Joined Jun 2001
1K Posts | 3+
Berkshire, England
Clearly I have been diddled out of some cubic capacity :shock:
i measured up today and found out my cylinder liner measured only 99.9+mm. Piston was 99.8mm.
Also I noticed the cylinder had been honed so it must be another material than nikasil.
Cheers,
Simon
i measured up today and found out my cylinder liner measured only 99.9+mm. Piston was 99.8mm.
Also I noticed the cylinder had been honed so it must be another material than nikasil.
Cheers,
Simon
Joined Oct 2004
1K Posts | 14+
nova scotia
I always send the new piston when I get a cylinder Nikasil treated.A 100mm bore should have a .003" average piston/cylinder clearance.
A nikasil treated cylinder will have hone marks as it is honed in the finish stage .
Adrian Bernard ltd in Thetford Mines,Quebec offers this service at reasonable prices as well as many other special services for the powersports industry.
....nsman
A nikasil treated cylinder will have hone marks as it is honed in the finish stage .
Adrian Bernard ltd in Thetford Mines,Quebec offers this service at reasonable prices as well as many other special services for the powersports industry.
....nsman
Joined Jul 2001
3K Posts | 1+
El Sobrante, Ca. 94803
In an effort to reduce tolerance stack replacement OEM Husaberg pistons have been offered as a plus / minus option.
Actual running fit depends on many variables and is often increased on liquid cooled designs.
Kind Regards,
Dale
PS
Some low Silicon content 95mm - 100mm Husaberg pistons have indeed required a running clearance exceeding .007".
Actual running fit depends on many variables and is often increased on liquid cooled designs.
Kind Regards,
Dale
PS
Some low Silicon content 95mm - 100mm Husaberg pistons have indeed required a running clearance exceeding .007".
Tryce says the millenium plating setup for the 97mm yzf with a JE piston is .0015".
We used to set up our 1/2 mile mx360s with .010"...
I know my 97mm yz was set up at .004" but I think the piston collapsed some after being lightened.
We used to set up our 1/2 mile mx360s with .010"...
I know my 97mm yz was set up at .004" but I think the piston collapsed some after being lightened.
Joined Jul 2001
3K Posts | 1+
El Sobrante, Ca. 94803
SFO said:
Hey old Buddy,
Since I know how old you are
:Do you remember "back in the day" when Powroll XR 75 big bore kits were set with a "slip fit" (ie .0002" - .0003") running clearance?
.001" would rattle and smoke like crazy. Made that mistake a time or two.
Best Regards,
Dale
PS
Got your message, been on family vacation in Disneyland. Also dropped by American Suzuki.
Joined Oct 2004
1K Posts | 14+
nova scotia
Hi Dale,
While it is true that most makers supply pistons in more than one standard size(class 1 or 11 or in many cases a,b,c,d.)I have found that they measure most times only .0002" different.
For practical purposes most private owners are not prepared to purchase multiple pistons and cylinders to verify correct tolerance of the makers product.We have to assume that the parts will fit and give us a working tolerance.
I was unaware that anyone even used low silicon
content pistons anymore(can you still get Hepolite )
I was also unaware that a running clearance of .007" was used for any application outside of maybe a drag race engine.(auto engines don't count)
You cant be using terms like"reduce tolerance stack" and then just walk away,sending us engineering challenged types to the library.
......cheers nsman
While it is true that most makers supply pistons in more than one standard size(class 1 or 11 or in many cases a,b,c,d.)I have found that they measure most times only .0002" different.
For practical purposes most private owners are not prepared to purchase multiple pistons and cylinders to verify correct tolerance of the makers product.We have to assume that the parts will fit and give us a working tolerance.
I was unaware that anyone even used low silicon
content pistons anymore(can you still get Hepolite
)I was also unaware that a running clearance of .007" was used for any application outside of maybe a drag race engine.(auto engines don't count)
You cant be using terms like"reduce tolerance stack" and then just walk away,sending us engineering challenged types to the library.
......cheers nsman
Joined Jul 2001
3K Posts | 1+
El Sobrante, Ca. 94803
Hi Dale,
While it is true that most makers supply pistons in more than one standard size(class 1 or 11 or in many cases a,b,c,d.)I have found that they measure most times only .0002" different.
Example:
Husaberg offers two different part numbers for the 2005 650.
820.30.007.000/I and 820.30.007.000/II.
Skirt diameters differ by roughly .0004".
For practical purposes most private owners are not prepared to purchase multiple pistons and cylinders to verify correct tolerance of the makers product."We have to assume that the parts will fit and give us a working tolerance".
We are talking Husaberg not Honda.
I was unaware that anyone even used low silicon
content pistons anymore(can you still get Hepolite )
Some performance (ie race only) specialty pistons are of low Silicon content.
I was also unaware that a running clearance of .007" was used for any application outside of maybe a drag race engine.(auto engines don't count)
Exotic Fuels, Forced Induction, etc.
You cant be using terms like"reduce tolerance stack" and then just walk away,sending us engineering challenged types to the library.
......cheers nsman
All engineering specifications have clearly defined acceptable limits. Said limits are dependant upon numerous variables including cost. If you have a cylinder bore ID which falls on the big side of spec. and a piston which falls on the small, excessive running fit may result.
As always Nsman,
My sincere pleasure.
Dale
While it is true that most makers supply pistons in more than one standard size(class 1 or 11 or in many cases a,b,c,d.)I have found that they measure most times only .0002" different.
Example:
Husaberg offers two different part numbers for the 2005 650.
820.30.007.000/I and 820.30.007.000/II.
Skirt diameters differ by roughly .0004".
For practical purposes most private owners are not prepared to purchase multiple pistons and cylinders to verify correct tolerance of the makers product."We have to assume that the parts will fit and give us a working tolerance".
We are talking Husaberg not Honda.
I was unaware that anyone even used low silicon
content pistons anymore(can you still get Hepolite
)Some performance (ie race only) specialty pistons are of low Silicon content.
I was also unaware that a running clearance of .007" was used for any application outside of maybe a drag race engine.(auto engines don't count)
Exotic Fuels, Forced Induction, etc.
You cant be using terms like"reduce tolerance stack" and then just walk away,sending us engineering challenged types to the library.
......cheers nsman
All engineering specifications have clearly defined acceptable limits. Said limits are dependant upon numerous variables including cost. If you have a cylinder bore ID which falls on the big side of spec. and a piston which falls on the small, excessive running fit may result.
As always Nsman,
My sincere pleasure.
Dale
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