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Head advice
- T_Dub
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1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler
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- jordan
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KZ810 streetfighter kz/gpz/gsxr
1983 gs1100e
1979 KZ 1000 1428 dragbike project
1974 kawasaki H1 500 sold
1972 Kawasaki s2 350-parted on ebay
1973 Kawasaki s2 350-parted on ebay
1982 kz750(sold)
1978 kz650 hardtail(sold)
1975 honda xl250-sold
1971 yamaha R5-sold
1982 yamaha xs400
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- T_Dub
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Thanks for the input, makes me feel better. I guess if it runs poorly I can just yank off the head and find a 750 one later.
1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler
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- kzz1p
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- One Test Is Worth A Thousand Expert Opinions!
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- T_Dub
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1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler
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- kzz1p
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Are the valves still stock? I guess the advice I'm getting is "go for it", I'm glad.
My advice is to use a 650 head, so you can use a smaller set of carbs. Why didn't Larry tell him to get a GPZ head? The answer -33's & 34's are to big and will kill the bottom end and mid range flow. Larry's a smart dude and has the equpt. to prove what he is saying. He tells people this over and over, somehow they don't listen and he stops talking. My advice, if your going to do it, do it right. Follow the guys that know how to make real horsepower, And yes the valves are stock and stock size........
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- T_Dub
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1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler
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- jordan
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KZ810 streetfighter kz/gpz/gsxr
1983 gs1100e
1979 KZ 1000 1428 dragbike project
1974 kawasaki H1 500 sold
1972 Kawasaki s2 350-parted on ebay
1973 Kawasaki s2 350-parted on ebay
1982 kz750(sold)
1978 kz650 hardtail(sold)
1975 honda xl250-sold
1971 yamaha R5-sold
1982 yamaha xs400
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- kzz1p
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hmm, I wouldn't mind trying smaller carbs, but arent they hard to come by? I went with BS34's because they're plentiful and they used to run on the GPz. I'm using GPz cams and I'm gonna be 3mm over the GPz bore, did Kawi put a carb on a bike that didn't need it?
Talk to Larry, ask him what he thinks of the small cams with something like 26mm or 28mm carbs. I would think one of his street clean ups, would be more then enough for a 810cc daily ridden street bike. Once you get a good head, you can change cams, etc. anytime you want. Larry is cool, he talks to those who will listen. I keep using the key word, listen. It doesn't hurt to ask him, he likes to help others. Check out his site.......
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- T_Dub
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1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler
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- kzz1p
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- One Test Is Worth A Thousand Expert Opinions!
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I was actually looking through old forum stuff on porting today and read a lot of the stuff he wrote. I shot him off an email earlier asking him about this, he definitely knows what he's talking about.
I find him to be a very nice guy. He likes his job and it has been his lifes work. He's not cheap, but without good porting your not going any place fast. I know everyone is on a budget these days, cut corners somewhere else and get a head that can flow. One of his heads can use small cams or big..............funny how I knew this, just one step ahead of you! hahaha
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- T_Dub
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1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler
Please Log in or Create an account to join the conversation.