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Husaberg 650 '05 mods

spanner said:
Is that a crown or a dish? it keeps turning inside out on me:)
Click to expand...

Johny
that piston in that photo has a 2mm CROWN on it. he says it is dished but it has a crown. your eyes were not deceiving you!

if you want a piston why the pheq don't you buy my 'tall boy' you tight arse!

http://www.ebay.co.uk/itm/HUSABERG-COMPLETE-PISTON-2004-2008-650-DISHED-B-C-STD-COMP-/261323303971?pt=UK_Motorcycle_Parts&hash=item3cd8152c23

if you don't buy it off flea bay i can save you a little coin.

there is one other piston I do that I don't advertise where we take the squish right down....yow ready for this?

regards

Taffy
 
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the wossner Specs say + 0.8cc piston volume

dome, dish, saucer, crown, plate, cheese platter. tea cosy .. call it whatever you like makes no difference to the speced volume

but hows 350 aud for a machined wossner piston LOL .. $100 to take some alloy off the top ...
 
Hello Johny

the piston is 25gbp more than a standard piston. in oz dollars that is about 50.

luckily Johny you're Greek - and you wouldn't be paying in Oz dollars.

if it was Oz dollars the piston would be cheaper by 20% - well not on ebay. ebay is for those that want to pay through the front door.

always buy off me by having a chat as there are various ways of bringing the prices down.

regards

Taffy
 
f1motos ebay price to me on that piston unadulterated is $230 inc ship taffy wants $350 for the same piston with a chunk out of it. that's an expensive hole.

johnny you asked about strength, have you though about increasing the head volume instead of thinning the piston?
 
details for good value euro source wossners 100gbp thats only 190 au .. even cheaper again LOL

ElSnorro said:
Thats right :)

This ebay store is the cheapest i could find in wossner pistons, a wossner piston for my SX-F 250 was only 105GBP!
Just email him for the 8583DA piston and ask a price (he does not have all pistons in the shop)

Forged Piston Kits, Spare Parts items in Max Moto Saloon store on eBay!

edit:
look here this is the piston you need (variating A-B or C size):
110GBP
Much better than the ELKO which is 200+euro as far as i know

http://www.ebay.co.uk/itm/KTM-Piston-Ki ... 27b92011e6
Click to expand...
 
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Johny

your real compression is about 13 to 1 the piston I do is either an exact copy or only a 1mm dish and the compression is then a REAL 13.8 to 1.

as the advert says, you can choose what you have - just tell me.

regards

Taffy
 
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Here are the 38mm inlets and 33 exhausts, I should mention the engine is 675cc:) 38mm is about as large as you can go without moving guides etc,
and that can be troublesome I am told:(
IMGP0835.jpg

The valve seats are cut on a Newen CNC valve seat machine (Octane Alley of Melbourne) for around $50 per seat result is absolutely superb:cool::cool::cool:
IMGP0833.jpg

I have reduced the CSA of the inlet port to increase gas speed by adding JB weld. I found I could create a stippled effect with the JB weld and my finger:eek:
so have treated the whole inlet port in such a manner to help keep the fuel
from "sticking" to the port walls.
 
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Spanner, fantastic job! The inlets are very close to each other i think. Anyway, your valves are made of titanium? Who makes them?
 
johnyberg the valves are Ferrea stainless steel and are very reasonably priced, They are modified by me to the right length, re-grooved and reduce in weight close to the smaller OEM originals.

The 38mm inlets are very close together and that is just fine:) as they are about as big as one can go without moving valve guide centres.

For 37mm inlets Subaru F1965P are around $25 ea

And 33mm exhausts Subaru F1966P are around $36 ea

These valves need modification but are of higher quality than the originals,
or than those that some others here are peddling.:)
 
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Thanks Spanner, good job! How about wear resistant? Please let us know how it goes. The weight is the bigest issue but i think the valve springs are capable to handle 10-20 grms more .
 
spanner said:
johnyberg the valves are Ferrea stainless steel and are very reasonably priced, They are modified by me to the right length, re-grooved and reduce in weight close to the smaller OEM originals.
Click to expand...

What kind of competence and equipment is required for the job? A lathe and a skilled craftsman? CNC?
 
The Subaru exhausts are a super alloy designed for turbo use, therefore
great material but the head is quite thick to stand the Very high temps. I turn the front and back face of the head to reduce weight.
Same with the inlets.
It is not hard to do these things IF you go about it the right way.
If you have access to a lathe and have a sound knowledge of turning it is pretty easy. There is a trick to be able to produce an accurate grove that I have solved:cool::cool::cool:
I use a surface grinder to finish the valve length.
As far a wear is concerned being Stainless in nature they retain their hardness
at high temperature. I do not think wear would be a problem.

I have seen some Ridiculous prices on the net for aftermarket Husaberg valves so happy to advise of alternates as a service for fellow Husaberg
fans:):):)
Feel free to ask questions.
I may answer by pm as some people do not deserve to know how to successfully do these things :p
 
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Nice job Spanner, it's good to share this with us! All you had to do is to shorten the valves and reduse the weight right? I will try this next time and see how it goes...
 
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Johny

get just 2 or 4 valves from the USA, get them machined up and imported. let me know how cheap you can get it done?

they won't be gas-flowed and the stems won't be re-hardened by the ferrea people themselves but you can tell me then just how much cheaper they are....

after you've had them turned down, re-grooved and re-shaped.

let's hope you don't have the import duty which is equal to VAT.

regards

Taffy
 
With the Ferrea Subaru valves you will not have to have the ends re-hardened
as the tip is quite long and will still be present after shortening.
"gas flowed", a fancy name for back cut, I tried
that as I explained earlier the flow might be better at low lift, but you may loose out on air fuel homogenization so perhaps a compromise.
As far as cost goes I would be outright embarrassed to sell valves at a price that others seem to be quite happy to do.
 
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as reported here before, I paid good money to have 6 shapes flow tested. one shape came out head and shoulders above the other shapes and the flow figures vimproved a hell of a lot.

that is proper testing and not a 'back cut' whatever you mean by that.

Johny
can you believe the biased view of someone who says to you that the ferrea man is a liar.
if you don't have the stems re-hardened there's no warranty.

can you believe a man who says
These valves need modification but are of higher quality than....... those that some others here are peddling

MY VALVES ARE FROM THE SAME COMPANY!!!:giggle::giggle::giggle:

regards

Taffy
 
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