kr750

[Madmax]

just been looking in the garage the zxr750j2
looks like it may be a mate for an h2 triple engine
would be a good fun bike to ride :wacko:

[Madmax]

have been into the tripples for years
this guy has a house to die for
http://www.mojokawasaki.com/ :eek5:

[merv]

just been looking in the garage the zxr750j2
looks like it may be a mate for an h2 triple engine
would be a good fun bike to ride :wacko:

What the hell are you trying to say? Have you got a spare H2 engine you are going to put in a ZXR750 frame or what are you talking about?

[Madmax]

thats the mission, may have to stack the output shaft
will be fun????
the guy at mojo racing has a cool house
madmax

[FROSTY]

well it would be a radical bike. but is the H2 powerfull by modern standards?

[Two Smoker]

well it would be a radical bike. but is the H2 powerfull by modern standards?
well 100bhp for the H2 so that would be like a late 90's 600....

[Madmax]

the XZ10R is fun
the H2R will be fun :mobile:

[merv]

well 100bhp for the H2 so that would be like a late 90's 600....

H2's were only 74hp stock (at the engine not at the rear wheel) so it would have to be warmed over to give 100hp. If it really was a KR750 that's another story as they were the later watercooled racing engines. Problem with the old strokers was the lack of revs they could do and while they had a hit of power it flattened off pretty quick unlike the modern 4 strokes that rev to eternity.

[Blakamin]

Nice house, cant half tell he's single!

[pete376403]

H2's were only 74hp stock (at the engine not at the rear wheel) so it would have to be warmed over to give 100hp. If it really was a KR750 that's another story as they were the later watercooled racing engines. Problem with the old strokers was the lack of revs they could do and while they had a hit of power it flattened off pretty quick unlike the modern 4 strokes that rev to eternity.

Oh I dunno....
Read Kevin Camerons article http://www.mojokawasaki.com/history/h2raninsidelook.html
Quote: Hemmed in by these limitations and the AMA rule on stock head and cylinder castings, the only out was to raise rpm, and that’s what they did. The standard dyno curve for the race motor shows 100 bhp as the peak reached at 9000 rpm, while in service, engines frequently peak as high as 9500 rpm, and sometimes see 10,000 rpm in the lower gears. Instead of fewer deep breaths through large, fair transfers, it must take 9500 rpm smaller huffs through its little ones

While not the revs of your modern 250 four, its not bad for an old stroker

[merv]

Yep Kevin Cameron is talking about the H2-R in that write-up not a stock H2 which is why I said it would have to be warmed over. Now has Madmax actually got a warm H2, an H2-R or what does he have? I can't make any sense out of his comments as he titled this KR750 and the KR was the later watercooled version?

[Madmax]

yes i have a warmed up h2 engine with a h2r air cooled clutch
the h2r cases have a larger rear engine bolt casting
was thinking about getting some FastbyGast goodies
purple haze racing do some good stuff as well