Joined Jun 2007
4K Posts | 1K+
south east WA Australia
Joined Sep 2007
782 Posts | 291+
???
Hi Bushie,
The 1198 stroke is 67.9mm.
Cylinder length is 111mm.
Not sure how to make it work yet:
The stud positions are frustratingly close:unsure:
The 1198 heads are cheap, not sure about all that fancy pants
valve gear, I wonder if it requires less power to drive?
As you can see from the photo there is enough material to leave a flange that could extend to the periphery of the head gasket except the cam chain area, which would need to change anyway.
The flange could be made to whatever thickness that is required.
Wall thickness seems to be a nominal 10mm.
The 1198 stroke is 67.9mm.
Cylinder length is 111mm.
Not sure how to make it work yet:
The stud positions are frustratingly close:unsure:
The 1198 heads are cheap, not sure about all that fancy pants
valve gear, I wonder if it requires less power to drive?
As you can see from the photo there is enough material to leave a flange that could extend to the periphery of the head gasket except the cam chain area, which would need to change anyway.
The flange could be made to whatever thickness that is required.
Wall thickness seems to be a nominal 10mm.
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
it does look very good
plenty of meat to work with
desmo head perhaps less work if you could use the liner unmodified ....
plenty of meat to work with
desmo head perhaps less work if you could use the liner unmodified ....
Joined Nov 2012
2K Posts | 821+
Iceland
no springs to work against right?
i've also seen the desmo stuff speculated to allow for more aggressive cams, fwiw
Joined Sep 2007
782 Posts | 291+
???
More like a conventional engine with a crankcase, barrel and head Bushie?
I have not explored that possibility, not sure how the barrel would attach?
Yes that is what I was thinking tourist, The weight of the 1098/1198 heads would also be interesting to know. The 1198 barrel is a surprisingly heavy 3kg.
Well so am I Goose
The 1198 head valve sizes are 43.5 inlet and 35.5 exhaust.
Although the smaller valved 1098 42 inlet 34mm exhaust, may be more suited for a single cylinder.
The valve drive would have to be changed to a chain + gear drive, I think that would be the easiest option.
Or I could use the less available ie expensive Husky 510/630 head which has the inlet at a more Husaberg friendly angle, but that has small valves 37 inlet and 32? exhausts, I have not been able to find out how much bigger valves can be fitted to that head, but would most likely have to move valve centres and seats (if possible) to get 40mm+ inlets, Xray eyes would be handy. I like the simple design of this head compared to the Ducati possibly lighter as well.
The 510/630 stud holes are frustratingly close to the Husaberg`s as well.
Keep the thoughts coming good to get ideas.
spanner
Joined May 2010
592 Posts | 247+
San Francisco, California
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
bolt spacing on the husky gasket looks closer to the berg?
I reckon husky head if using split berg cases, ducati head if using modifed cases maybe 90's berg cases or rfs ?
awesome ideas spanner , if you need some 6061 carved up in the mitseiki for some odd joining job don't be shy
I reckon husky head if using split berg cases, ducati head if using modifed cases maybe 90's berg cases or rfs ?
awesome ideas spanner , if you need some 6061 carved up in the mitseiki for some odd joining job don't be shy
Joined Sep 2007
782 Posts | 291+
???
Yes Bushie, it is slightly closer pitching I think.
The manufactures must make them that way
so they can not be swapped to easily.
The Husky head would be nice, but
it would require a major flow improvement.
Not sure if it is possible.
I would wont to stick with the split berg cases.
Probably use 450 cases as 550`s are not very common
it seems.
The manufactures must make them that way
so they can not be swapped to easily.
The Husky head would be nice, but
it would require a major flow improvement.
Not sure if it is possible.
I would wont to stick with the split berg cases.
Probably use 450 cases as 550`s are not very common
it seems.
Ha I knew this was something a Kiwi would do! I like your cultural values.
Joined Sep 2007
782 Posts | 291+
???
The inlet valve centres are 41mm vs the Husabergs 39mm so should be
Ok for bigger valves. Need to get another head and dissect it to see
if I can move the guides further apart. Kibblewhite sell 42mm titanium
valves
Thinking the Ducati liner is to big in outside diameter and would end up to thin to retain enough volume in the water jacket, so will probably use a Darton blank 4.250" (108mm ish) ductile iron liner instead
All good fun and games.
Ok for bigger valves. Need to get another head and dissect it to see
if I can move the guides further apart. Kibblewhite sell 42mm titanium
valves
Thinking the Ducati liner is to big in outside diameter and would end up to thin to retain enough volume in the water jacket, so will probably use a Darton blank 4.250" (108mm ish) ductile iron liner instead
All good fun and games.
Last edited:
If you like info about the 1X98 heads Ive done a lot of research on them. Flowing them, modifying the ports, measuring cams, tried cam timing, buretted the chambers bla bla Would you like to know the weight of the 1198 head? Got a pair on the shelf, so its easy.
Im using iron liners for the 1198 cylinders, but I had the job done for me so I dont know what liners are in there, can find out though.
Im quite intrigued by the thought of getting a head like that on too, the best 1198 duc engine I did is at 153 rwhp/litre, no doubt that would be a sweet berg
Would you like to know the weight of the 1198 head? Got a pair on the shelf, so its easy.Im using iron liners for the 1198 cylinders, but I had the job done for me so I dont know what liners are in there, can find out though.
Im quite intrigued by the thought of getting a head like that on too, the best 1198 duc engine I did is at 153 rwhp/litre, no doubt that would be a sweet berg
Last edited:
Joined Sep 2007
782 Posts | 291+
???
I could not resist it any longer...
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Got the holes moved to suit the Husaberg cylinder stud position, filled to original
holes with JB weld.
[/URL][/IMG]
Going to have to fill the water jacket holes in the cylinder head as they
only 2mm from the bore. Laser welder to the rescue
Got the holes moved to suit the Husaberg cylinder stud position, filled to original
holes with JB weld.
Going to have to fill the water jacket holes in the cylinder head as they
only 2mm from the bore. Laser welder to the rescue
Very cool...no very very cool
What cc is the head? Thinking major static compression ratio -> you could get rid of the clover leaf design chamber?
What cc is the head? Thinking major static compression ratio -> you could get rid of the clover leaf design chamber?
Last edited:
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