Hustler class ( Vinduro Buckets)

[Flettner]

A crank is emerging.

[husaberg]

Neil, C90 12v ie late is a dished piston in suitable size pin is 13mm but petty sure you can fix this at the piston or the rod,
FZR250 is 14mm

[Flettner]

I need raised top pistons, the 250 combustion chambers are rather large.

[husaberg]

I need raised top pistons, the 250 combustion chambers are rather large.

the earlier ones are domed. there is also a flat top c70.
so just how big is those chambers.....

i guess with ethanol you can have decent comp
20-22lb boost is about 40hp

[F5 Dave]

And those ring grooves suggest 6000rpm.

[husaberg]

And those ring grooves suggest 6000rpm.

They look to be similar to the cb125T widths?
in my defense Rootes blowers make power at low revs anyway.

[ken seeber]

And those ring grooves suggest 6000rpm.

F5, that's rubbish. Get your facts right. They suggest only 5900 rpm...

[F5 Dave]

Sorry must be flex in the tacho cable..

[husaberg]

FB80 Suzuki
1mm rings 13mm pin
FB80 1 85 shape 48mm 44mm pin length 21.7+1 comp height 1.0-2 comp 2 oil 13mm

or CB150T
CB150T 1 104shape 47mm bore std 48.5 pin length 20.7+4.3 comp height 1.0-2 rings 2 13mm pin 38

pictures here





or CB350F

Honda CB350F 47.50 23+4 13.00 53.00 13103-333-000

[Flettner]

A little more crankshaft like.

[husaberg]

A little more crankshaft like.

With that stroke is likely smaller than some cam blanks.

[husaberg]

crank forging process

[speedpro]

I have a stack of FZR bits. Let me know if you want anything. Is there a possibility of running a cut down FZR head? I have 2 heads with various damage, and cams etc. How many revs will the bottom end handle?

[husaberg]

The standard pistons have a one piece oil ring . I rebored this . So new Bores ,pistons ,head seals , head gasket. I tried . Lucus mineral oil . Smokes on the 2 outer cylinders and one inner.

i think original one was one piece but there are aftemaeket three piece.?
i think std sleeves they can fit 400 pistons it might still smoke but it will go better...

[Flettner]

I have a stack of FZR bits. Let me know if you want anything. Is there a possibility of running a cut down FZR head? I have 2 heads with various damage, and cams etc. How many revs will the bottom end handle?

Thankyou, I have a half head here but rules call for air cooled, unfortunately. Good thing is E85 is not banned.