Haybusa Parts and Service Member Support
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Author Topic: Yoshi Cams  (Read 3535 times)

Offline Blue 1300

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Yoshi Cams
« on: April 30, 2005, 12:07:01 PM »
Hi All

First post here so please bear with me.

Just bought some Yoshimura stage one cams for my busa, I need to re-shim the head before fitting them.

what performance gain am i likely to see with fitting these, will it give me that little bit more mph up top ?

at the moment i am running, small airbox mod, bmc filter, full yoshi rs3 system, PC II, ram air inlets sealed.

thanks
Blue 1300
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Offline GeorgeC

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« Reply #1 on: April 30, 2005, 01:37:55 PM »
I think the general consensus is about 10hp or so with the stage 1's...  I just installed some myself, but haven't tested them out yet.

BTW, welcome to the board.  :D
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Offline slamminbusa

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« Reply #2 on: April 30, 2005, 03:14:34 PM »
I saw a 9HP gain with the Yosh drop ins. Not really sure if that is worth $1000......
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Offline Blue 1300

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« Reply #3 on: April 30, 2005, 03:43:13 PM »
thanks for the reply chaps... not to sure about the price now either £695 UK£

my busa is currently putting out 175 bhp with the mods i have so these yoshi cams should push it to around 185 bhp, which is on par with most modded 12r`s around here..

I am aiming at the magic double ton 200mph

thanks for the welcome.
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Offline GeorgeC

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« Reply #4 on: May 01, 2005, 08:39:28 AM »
I gained a solid 2mph at the dragstrip (only got in one pass so far, though).

$450 for the cams, $30 for a new valve cover gasket, installed/setup by myself for free (I did have to buy a degree wheel since I didn't have one).
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Offline Blue 1300

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« Reply #5 on: May 02, 2005, 02:12:55 AM »
what about the shims ?

did you re-shim the head as the standard valve clearances are not suitable for the yoshi cams ?
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Offline GeorgeC

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« Reply #6 on: May 02, 2005, 08:40:36 PM »
No shimming needed with the Yosh cams...
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Offline Blue 1300

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« Reply #7 on: May 03, 2005, 01:16:39 PM »
Yes I am in the UK, Holeshot in leeds did have Kent cams, Big CC i was waiting for a reply back off them

Here in the England things are expensive to say the least... we have VAT ( tax ) added to all things at 17.5%

if i bought from the states I would get hit with import duty, VAT and ?? rip off britain is here...

example diesel is £4.60 per gallon how much is diesel over there ?

thanks for the help.
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Offline Blue 1300

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« Reply #8 on: May 04, 2005, 04:56:16 PM »
Just cannot see how you can fit these cams and not re-shim the head the valve clearance on both cams are miles out to the standard busa cams ?
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Offline gazza414

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« Reply #9 on: May 06, 2005, 01:54:19 PM »
Correct , must check and not assume all is OK. Some things come back to bite you in life!!!
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Offline Blue 1300

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« Reply #10 on: May 06, 2005, 02:29:29 PM »
and almost forgot what about the running in "breaking in " period of 350miles ?not to exceed 5,000 rpm
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Offline GeorgeC

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« Reply #11 on: May 09, 2005, 09:47:03 PM »
These were used cams, no break-in necessary...

Valve clearance was checked and was well within spec.
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Offline Blue 1300

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« Reply #12 on: May 10, 2005, 03:30:40 PM »
Now fitted these bit of a bitch to keep the cam chain on the wheels, had to use three cable ties on each wheel then put the cam chain tensioner on, all OK now.

Done the required 250 miles running in, changed the engine oil / new filter.

will now have to wait until weekend to test them fully.....
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