Yoshimura R&D Superbike

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Re: Yoshimura R&D Superbike

15 Dec 2012 11:50
#563072
4TheKZ1000 wrote: So, I guess any street cred I had is gone....... :blush: :blush: :blush: :blush: :blush:

dont worry, we wont tell your drinking buddies, we are a discreet bunch here in kzr :)

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Re: Yoshimura R&D Superbike

15 Dec 2012 14:19
#563088
r we seeing 37.5mm and 31 mm valve sizes? stock would be 36, 30. they dont usually bother increasing the exht valve size these days. they found that the exhst flows fine at 30mm.
u will want to check the valve to valve and v to p clearance before u take it all apart.
now would be the best time to put the head and cams back on and check out the cam specs. and all of these most important clearances.
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

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The following user(s) said Thank You: mtbspeedfreak, Street Fighter LTD

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Re: Yoshimura R&D Superbike

15 Dec 2012 15:17
#563094
is it me or is the engine sitting on the floor at an angle..maybe they tilted the oil pan to help in right hand corners
1976 KZ900
2003 ZX12R
2007 FZ1000
2004 ninja 250R for wife

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Re: Yoshimura R&D Superbike

15 Dec 2012 17:53
#563102
trianglelaguna wrote: is it me or is the engine sitting on the floor at an angle..maybe they tilted the oil pan to help in right hand corners

It's you :P

No oil pan included with this one
2000 ZRX 1100
1976 KZ 900- Daily Driver
1980 LTD 550- Dalton Highway survivor!

If it has tits or tires, it'll give you problems!

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Re: Yoshimura R&D Superbike

15 Dec 2012 19:47
#563110
mark1122 wrote: r we seeing 37.5mm and 31 mm valve sizes? stock would be 36, 30. they dont usually bother increasing the exht valve size these days. they found that the exhst flows fine at 30mm.
u will want to check the valve to valve and v to p clearance before u take it all apart.
now would be the best time to put the head and cams back on and check out the cam specs. and all of these most important clearances.

Thanks for the advice Mark! I don't believe the motor came with a cam chain - I'd need to get one, as well as a degree wheel to set the timing, in order to check these clearances, correct?

My plans are to strip it down to the bare cases then bead blast them, the cylinders, and head before reassembling.
2000 ZRX 1100
1976 KZ 900- Daily Driver
1980 LTD 550- Dalton Highway survivor!

If it has tits or tires, it'll give you problems!

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Re: Yoshimura R&D Superbike

16 Dec 2012 01:11 - 16 Dec 2012 12:14
#563165
the crank has to come out to get the cam chain out. so i would think the chain is in there. could it be wrapped around the crank? looking at the pic,it looks to me like it is in there.

u only need the degree wheel to spec out the cams. u may be able to find the specs by researching the stampings on the cams. u can check all of the important measurements with plastercine or solder, and your vernier.
it looks like the intake valves hit the pistons at some time. u may want to check the valve stems for run out.

it would be wise to do the measuring now. then u can move forward with research and parts while u have it apart to clean, blast, and paint.
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

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Last edit: 16 Dec 2012 12:14 by mark1122.

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Re: Yoshimura R&D Superbike

16 Dec 2012 03:29
#563179
Chains can always be split. I would be more interested in the "why", though, if it is indeed missing.

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Re: Yoshimura R&D Superbike

16 Dec 2012 18:29
#563253
DoubleDub wrote: Chains can always be split. I would be more interested in the "why", though, if it is indeed missing.

It's there. When I pulled the head, I saw a folded up cam chain in the valley. I haven't fished it out though.
2000 ZRX 1100
1976 KZ 900- Daily Driver
1980 LTD 550- Dalton Highway survivor!

If it has tits or tires, it'll give you problems!

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Re: Yoshimura R&D Superbike

16 Dec 2012 18:35
#563254
mark1122 wrote: the crank has to come out to get the cam chain out. so i would think the chain is in there. could it be wrapped around the crank? looking at the pic,it looks to me like it is in there.

u only need the degree wheel to spec out the cams. u may be able to find the specs by researching the stampings on the cams. u can check all of the important measurements with plastercine or solder, and your vernier.
it looks like the intake valves hit the pistons at some time. u may want to check the valve stems for run out.

it would be wise to do the measuring now. then u can move forward with research and parts while u have it apart to clean, blast, and paint.

You were correct, it's down there folded up - I need to fish it out. I'll be sure to get a degree wheel soon, I'm headed back to PA for 2 weeks for Christmas so I'll catch up on this when I return.
2000 ZRX 1100
1976 KZ 900- Daily Driver
1980 LTD 550- Dalton Highway survivor!

If it has tits or tires, it'll give you problems!

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Re: Yoshimura R&D Superbike

16 Dec 2012 18:46
#563258
mtbspeedfreak wrote:
mark1122 wrote: the crank has to come out to get the cam chain out. so i would think the chain is in there. could it be wrapped around the crank? looking at the pic,it looks to me like it is in there.

u only need the degree wheel to spec out the cams. u may be able to find the specs by researching the stampings on the cams. u can check all of the important measurements with plastercine or solder, and your vernier.
it looks like the intake valves hit the pistons at some time. u may want to check the valve stems for run out.

it would be wise to do the measuring now. then u can move forward with research and parts while u have it apart to clean, blast, and paint.

You were correct, it's down there folded up - I need to fish it out. I'll be sure to get a degree wheel soon, I'm headed back to PA for 2 weeks for Christmas so I'll catch up on this when I return.

Have a Very Merry Christmas Mark. Say hi to your parents for me.

:)
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

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~ ~ _- \,
~ (k) / (z)

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Re: Yoshimura R&D Superbike

16 Dec 2012 19:04
#563263
mark1122 wrote:
mtbspeedfreak wrote:
mark1122 wrote: the crank has to come out to get the cam chain out. so i would think the chain is in there. could it be wrapped around the crank? looking at the pic,it looks to me like it is in there.

u only need the degree wheel to spec out the cams. u may be able to find the specs by researching the stampings on the cams. u can check all of the important measurements with plastercine or solder, and your vernier.
it looks like the intake valves hit the pistons at some time. u may want to check the valve stems for run out.

it would be wise to do the measuring now. then u can move forward with research and parts while u have it apart to clean, blast, and paint.

You were correct, it's down there folded up - I need to fish it out. I'll be sure to get a degree wheel soon, I'm headed back to PA for 2 weeks for Christmas so I'll catch up on this when I return.

Have a Very Merry Christmas Mark. Say hi to your parents for me.

:)

I wonder if a Yoshimura Series I could be my carry-on for the trip back to CA?!?!? :side:
2000 ZRX 1100
1976 KZ 900- Daily Driver
1980 LTD 550- Dalton Highway survivor!

If it has tits or tires, it'll give you problems!

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Re: Yoshimura R&D Superbike

16 Dec 2012 20:54
#563289
i dought it. that pipe it almost 4 ft long. its a 1 piece pipe.
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.

~ ~ ~_@
~ ~ _- \,
~ (k) / (z)

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