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  #76  
Old 09-13-2009, 08:02 PM
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Re: 11:1 CR Race/Street Engine build

Teaser pics. Sorry if they are out of focus... this is what happens when you let Eric touch the camera





Tom
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  #77  
Old 09-13-2009, 08:04 PM
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Re: 11:1 CR Race/Street Engine build

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Originally Posted by SVXRide View Post
YT,
Did a little checking. Can you confirm that you'll want shims that have a Rockwell harness of 45 or greater?
-Bill

Bill HRC 45 should be pretty good.

Tom
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  #78  
Old 09-13-2009, 08:16 PM
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Re: 11:1 CR Race/Street Engine build

Cool. High carbon steel it is (1095ish, if my memory serves me right). I'm guessing they may need to be heat treated after machining due to the heat imparted by the machining. We're basically talking about tool steel/knife blade material here.
-Bill
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  #79  
Old 09-13-2009, 08:18 PM
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Re: 11:1 CR Race/Street Engine build

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Originally Posted by SVXRide View Post
Cool. High carbon steel it is (1095ish, if my memory serves me right). I'm guessing they may need to be heat treated after machining due to the heat imparted by the machining. We're basically talking about tool steel/knife blade material here.
-Bill
It would be a good idea to heat treat it if they have the facilities to do it. I know I do not aside from heating and flashing in water

Tom
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  #80  
Old 09-14-2009, 03:05 PM
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Re: 11:1 CR Race/Street Engine build

You also need to show us pictures of the auxiliary water tappings...

Remember, always prove what you declare
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  #81  
Old 09-15-2009, 04:48 PM
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Re: 11:1 CR Race/Street Engine build

Danny have not tapped them yet. I am picking up the fittings and hose this week though

Tom
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  #82  
Old 09-16-2009, 01:36 AM
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Re: 11:1 CR Race/Street Engine build

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Danny have not tapped them yet. I am picking up the fittings and hose this week though

Tom
This will be interesting to see...
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  #83  
Old 09-16-2009, 07:04 AM
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Re: 11:1 CR Race/Street Engine build

I just found THIS source of shims also Tom. They are overseas though but priced good in my opinion. Shipping should be cheap...
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  #84  
Old 09-16-2009, 03:00 PM
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Re: 11:1 CR Race/Street Engine build

Tom,
I totally agree with you about the cross over pipe and its causing the left bank to not get enough cooling as we understand it that bank boils even when the radiator is running cool. The guy with the buggy still hasn't been able to keep it cool so we are going to cut the cross pipe today and raise the height. Happy to post photos when and give feed back to the degree of success or failure.
Tony
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  #85  
Old 10-03-2009, 08:52 AM
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Re: 11:1 CR Race/Street Engine build

after numerous emails and phone calls, I cannot find the proper size shims anywhere...

I had the thought of trimming down the valve stems to create a larger gap to use thicker shims. I would rather not do that in all honesty.

SO.... I have ordered some Yamaha motorcycle shims. 25mm in diamter and 2.30mm in thickness. I will send these out to be cut down to the individual thicknesses they need to be.... Anyone else doing this... Highly suggest trying to take 1mm out of the base circle

Tom
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  #86  
Old 10-03-2009, 11:11 AM
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Re: 11:1 CR Race/Street Engine build

Quote:
Originally Posted by TomsSVX View Post
after numerous emails and phone calls, I cannot find the proper size shims anywhere...

I had the thought of trimming down the valve stems to create a larger gap to use thicker shims. I would rather not do that in all honesty.

SO.... I have ordered some Yamaha motorcycle shims. 25mm in diamter and 2.30mm in thickness. I will send these out to be cut down to the individual thicknesses they need to be.... Anyone else doing this... Highly suggest trying to take 1mm out of the base circle

Tom
Camshaft base circle?
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  #87  
Old 10-03-2009, 11:22 AM
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Re: 11:1 CR Race/Street Engine build

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Originally Posted by TomsSVX View Post
Highly suggest trying to take 1mm out of the base circle

Tom
Are you running into this trouble since you are using stock length EJ20 valves instead of the shortened EJ20 supertech valves used on the EFI logics car?
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  #88  
Old 10-03-2009, 11:43 AM
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Re: 11:1 CR Race/Street Engine build

He mentioned earlier he used Crower valves, I guess they are stock length.

EFILogics are 0.5mm shorter...
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  #89  
Old 10-03-2009, 12:23 PM
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Re: 11:1 CR Race/Street Engine build

yes reduce the bas circle.

Yes they are stock length valves

Tom
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  #90  
Old 10-03-2009, 09:22 PM
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Re: 11:1 CR Race/Street Engine build

Quote:
Originally Posted by TomsSVX View Post
after numerous emails and phone calls, I cannot find the proper size shims anywhere...

I had the thought of trimming down the valve stems to create a larger gap to use thicker shims. I would rather not do that in all honesty.

SO.... I have ordered some Yamaha motorcycle shims. 25mm in diamter and 2.30mm in thickness. I will send these out to be cut down to the individual thicknesses they need to be.... Anyone else doing this... Highly suggest trying to take 1mm out of the base circle

Tom
I wouldn't worry about HONESTY you do what ever you have to.
A lot of engines are done like that.
On Desmodromic Ducatis the shim top and bottom of the valve are usually rubbed down to size on an oil stone to suit.
The only difference whether you do the shim or the valve, is the cost. We know which is cheaper.

Harvey.
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