Author Topic: Well CRAP  (Read 18063 times)

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Offline dsrace

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Re: Well CRAP
« Reply #15 on: March 28, 2019, 06:57:21 AM »
honestly if you did drop 1 full point i bet you would be safe to 14 psi on your current e55 fuel.
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Offline Carlriddle

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Re: Well CRAP
« Reply #16 on: March 28, 2019, 01:17:29 PM »
Yeah trying to find how thick a plate I need to do that. More zx12 voodoo. Lol
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Offline dsrace

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Re: Well CRAP
« Reply #17 on: March 28, 2019, 07:08:23 PM »
found this interesting  ;D

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Offline dsrace

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Re: Well CRAP
« Reply #18 on: March 28, 2019, 07:23:02 PM »
this guy makes me chuckle   ;D

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Offline dsrace

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Re: Well CRAP
« Reply #19 on: March 28, 2019, 07:26:04 PM »
and here's the gear stack in your 12r




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Offline fabr

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Re: Well CRAP
« Reply #20 on: March 28, 2019, 09:07:35 PM »
He is funny to listen to for sure. He does make you think though. Honestly, I was always under the impression that the undercutting purpode was to make for a faster shift due to the dogs being drawn into full engagement faster then the cam would naturally move the dogs into full engagement.

 I do see the undercut helping the dogs staying engaged under power though if there is the slop he describes in the cam/follower/weak spring or worn shift drum.


Most super bike trans dogs are already undercut BTW. Only reason to increase the undercut is to cut a few thousandths off the ET.
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Offline dsrace

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Re: Well CRAP
« Reply #21 on: March 28, 2019, 09:16:14 PM »
yes he is  ;D      i cannot say it's good or bad. i can say that enemy has enjoyed it in his turbo busa. i do agree that if one is having issues then one really needs to find the problem and repair rather than just sending a set off.  now for the abuse they suffer in rails......???? not sure. i can see it making that spot weaker though and yes does make you think!
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Offline fabr

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Re: Well CRAP
« Reply #22 on: March 29, 2019, 04:37:51 AM »
The weaker part is pretty much BS ,IMO. You ever see a dog broken? Maybe I just missed it but I've never seen it be an issue.
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

Offline dsrace

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Re: Well CRAP
« Reply #23 on: March 29, 2019, 08:51:20 AM »
i have never seen one of those dogs break. i personally have never had a bike trans fail either. so when the back cut that do they anneal the gear and then re harden it or just back cut and hope the case hardening was deep enough, i know some cryo the gears as well.
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Offline fabr

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Re: Well CRAP
« Reply #24 on: March 29, 2019, 09:00:52 AM »
i have never seen one of those dogs break. i personally have never had a bike trans fail either. so when the back cut that do they anneal the gear and then re harden it or just back cut and hope the case hardening was deep enough, i know some cryo the gears as well.
They only cut(grind) the dogs a few thousandths ,just enough to add a couple degrees of back cut. SFAIK the dogs need to be in pretty much undamaged condition or they can't back cut the dogs without cutting through the hard layer.
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

Offline dsrace

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Re: Well CRAP
« Reply #25 on: March 31, 2019, 07:22:35 PM »
carl, old article but i think you may find it useful.

http://www.bikeland.org/board/viewthread.php?FID=1&TID=9753
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Offline Carlriddle

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Re: Well CRAP
« Reply #26 on: April 01, 2019, 02:20:43 PM »
As usual with the zx12 not tons of info out there, but heres the plan.

Got a replacement head,
Going to use a spacer plate, .020, to lower compression to 11.5:1
Head studs
Billet clutch basket

Got couple other things to check, but this should allow boost to 10-12lbs, on e60 fuel.   :nw :nw :nw Drowning
You can keep your CHANGE, I'd like to keep my DOLLAR.

Offline dsrace

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Re: Well CRAP
« Reply #27 on: April 02, 2019, 06:49:21 AM »
sounds like a plan!!
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Offline Enemy

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Re: Well CRAP
« Reply #28 on: April 02, 2019, 12:44:30 PM »
WOOHOO!
Let there be MORE boost!
Sucks that it had to happen this way, but what the hell right?
Any regards to what cam timing you want with the plate? On the Busa I have read of some leaving the cams in stock position and not being too far off from their target * after a 030 plate but results will vary lol. I had to go to adjustable cam gears to get mine where I wanted them but I have no spacer plate.
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Offline dsrace

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Re: Well CRAP
« Reply #29 on: April 02, 2019, 02:57:44 PM »
enemy interesting you bring that up! i don't know what carl came up with but i searched for a while to see if i could find any posts on this subject on the 12r's. i  couldn't find squat in regards to it. i could find that stock plates are .010 and a .020 would drop cr 1/2 to 3/4 point depending on head and condition of all.  i could not find any info on what the .010 extra spacer would do to timng. honestly it advanced timing 2* mechanically that wouldn't be so bad especially if carl can turn the cam sensor back 2* rather than the 2* advanced he has it at now.

while i was helping search for carl, i did find an interesting article about how some are setting the exh cam diff than the intake for turbo applications. less  overlap and some other reason. would have to re read that again.
« Last Edit: April 02, 2019, 03:06:55 PM by dsrace »
Don't never argue with an Idiot!
Because he will drag you down to his level and beat you with experience

 

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