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Old 07-08-2011, 12:01 PM   #1
arlockstedt
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04 gsxr 1000 yoshimura cams

Just came across yoshi stage 1 cams and looking to get them installed. Just curious what gains I should be expecting with a tune. I have a PCIII, full Yoshi trs exhaust, k&n, and TRE. I know there is always different answers, just looking for a ballpark? 5hp? 10hp? in the mid or top end? thanks in advance....
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Old 07-08-2011, 12:03 PM   #2
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Re: 04 gsxr 1000 yoshimura cams

Are those the S type or the R type cams? Apparently the S type are nearly nothing compared to stock......need the type R cams.
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Old 07-08-2011, 12:12 PM   #3
arlockstedt
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Re: 04 gsxr 1000 yoshimura cams

they are the stage 1 not type s....

GSXR-1000 01-04 210-503-0100
STAGE-R TYPE-R

10.00/8.30

253/240

GSXR-1000 01-04 210-503-0200
STAGE-R TYPE-S

8.72/7.72

252/245

GSXR-1000 01-04 SUXR481
STAGE-1

9.50/8.20

248/230



stage 1 seem way better than type s, but not as good as type r.......????
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Old 07-08-2011, 09:33 PM   #4
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Re: 04 gsxr 1000 yoshimura cams

they should get you 5 hp
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Old 07-09-2011, 02:30 AM   #5
arlockstedt
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Re: 04 gsxr 1000 yoshimura cams

i was thinking more of at least 10-15? you think changing cams in a 1000 only gets 5?
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Old 07-09-2011, 07:24 AM   #6
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Re: 04 gsxr 1000 yoshimura cams

Stage 1 cams are good, but you'll probably knock a hole in the midrange giving you the feeling of an angry motor that kicks hard in the upper rev range, headwork (porting) to match the cams will fill that midrange out.

I've got much the same setup as yours, plus the Yoshi ECU (revlimit 13500) and mild headwork and my bike will pass a 2010 CBR1000 down the chute at Eastern Creek and I'm a big fat bastard, so extra top end power is available with these cams. I can tell you that I did the cam and headwork at the same time and it brought the motor to life, 12hp top end and extra all the way through the range too. Power tails off gently after 12750rpm, so with your stock limiter you'll be making power all the way to the top.

My cams are timed to yoshi specs at 105/105, also the valve clearances are much more precise with these cams, I can't remember the numbers but make sure the installer knows they have to be right. Stonger valve springs are a no brainer for mine, I dropped an inlet valve with stock cams and stock springs at the track, expensive.

Do before and after runs on the dyno and let us know how you get on.

Cheers, Bunas
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GSXR1000 K2 ex Suzuka 8 Hour race bike. Ohlins shock, damper and kitted forks, Brembo M/C. Titanium race exhaust, velocity stacks, BMC filter. Yoshi ECU and harness + PCIII. Yoshi Stage 1 cams, ported head, stock compression.

Last edited by bunabaroo; 07-09-2011 at 07:30 AM.
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Old 07-09-2011, 07:47 AM   #7
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Re: 04 gsxr 1000 yoshimura cams

Anyone know the reason why Yoshi produced the Type S cams if they're not much better than stock?
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Old 07-09-2011, 10:56 AM   #8
arlockstedt
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Re: 04 gsxr 1000 yoshimura cams

I was going to use the yoshi stage 1 cams because i got them for a great deal, but Would I see better gains gains going with web cams? 540/577 or 540/566? I have also heard stock k5 cams are a huge gain in the k4? more mid range then top, but a nice gain where ill be riding. Any ideas or opinions? I will be using the yoshi .45 head gasket as well to help wake things up.
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Old 07-31-2011, 10:49 PM   #9
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Re: 04 gsxr 1000 yoshimura cams

UPDATE...
Just got my head cnc'ed. Looking at running an 05 gsxr 1000 stock intake cam, and my 04 gsxr 1000 intake cam as my exhaust. any comments?? I was also considering a 05 stock intake, and a 07 stock exhaust cam??? Input please....
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Old 08-08-2011, 05:41 PM   #10
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Re: 04 gsxr 1000 yoshimura cams

I have a tuner friend that claims the K8 1000 cams have the same profile as the stage 1 Yoshimura cams.... Don't know if it was S or R type. But for the price I would be willing to run the k8 stockers....
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Old 08-23-2011, 05:30 PM   #11
arlockstedt
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Re: 04 gsxr 1000 yoshimura cams

i have a set of yoshi stage 1 cams sittin on my desk...lol I traded in my web cams for a different grind. They should leave web tomorrow. Have a full cnc'ed head and the web 483/11i cams on their way. Looking to increase the compression ratio with a thin head gasket or mill the head. Any suggestions?
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