Pontiac - Race The next Level

          
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  #181  
Old 04-05-2016, 11:29 PM
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mike leech mike leech is offline
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Quote:
Originally Posted by cgeise View Post
Are you Saying I don't have a clue ???
I very much doubt that was his intent

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  #182  
Old 04-06-2016, 01:27 AM
john marcella john marcella is offline
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Quote:
Originally Posted by cgeise View Post
Are you Saying I don't have a clue ???
Not at all, I don't know anything about you . I was just sayin.

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  #183  
Old 04-06-2016, 03:53 AM
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Hey Mike, can I ask what size pushrod do you use and has the pushrod hole been moved ?
Thanks and good luck this season.
John

  #184  
Old 04-06-2016, 08:08 AM
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Quote:
Originally Posted by BB70 View Post
Hey Mike, can I ask what size pushrod do you use and has the pushrod hole been moved ?
Thanks and good luck this season.
John
Sure. The pushrods are 7/16 to 3/8 taper .165 wall. And the intake rocker is .700 offset. So yes the pushrod hole was moved.

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  #185  
Old 04-06-2016, 09:08 AM
john marcella john marcella is offline
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Should be 1/2 straight imo.

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  #186  
Old 04-06-2016, 09:22 AM
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Quote:
Originally Posted by john marcella View Post
Should be 1/2 straight imo.
I agree. But no room in them lil heads.

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  #187  
Old 04-08-2016, 08:01 PM
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Ha ha.
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  #188  
Old 04-09-2016, 06:13 AM
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Valve hit the piston?

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  #189  
Old 04-09-2016, 08:55 AM
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Quote:
Originally Posted by LiL Jack View Post
Valve hit the piston?
Piston is OK. Valve, Guide was ripped out of head, Rocker arm junk obviously the spring and retainer. It's all fixed up. Just waiting on a head gasket.

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  #190  
Old 04-09-2016, 12:45 PM
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Quote:
Originally Posted by mike leech View Post
Piston is OK. Valve, Guide was ripped out of head, Rocker arm junk obviously the spring and retainer. It's all fixed up. Just waiting on a head gasket.
I thought it might be the guide or seat. Glad it's fixed, go get'em!

  #191  
Old 04-09-2016, 12:54 PM
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Was the valve to guide clearance to tight? Making that must steam your egt's must expand that valve a bunch.

  #192  
Old 04-09-2016, 01:34 PM
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Quote:
Originally Posted by JSPONT View Post
Was the valve to guide clearance to tight? Making that must steam your egt's must expand that valve a bunch.
No. The spring was the first to go. Then retainer. Then side load on guide. Then valve touched radially. Then bent valve. Then rocker.....

Not sure why spring broke.....

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  #193  
Old 04-09-2016, 02:15 PM
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Quote:
Originally Posted by mike leech View Post
No. The spring was the first to go. Then retainer. Then side load on guide. Then valve touched radially. Then bent valve. Then rocker.....

Not sure why spring broke.....
What springs you running? Did the dyno let go of the engine at any point? I've broke a couple PAC double springs from the dyno letting go.

  #194  
Old 04-09-2016, 02:50 PM
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Great thread Mike. Very pertinent info. Thanks for the many details. Best of luck with the dyno session; Looking forward to some top level numbers.

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  #195  
Old 04-09-2016, 04:50 PM
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Sometimes you just happen to be the guy that gets the part that is not perfect and then you have an issue. Especially when the part is "exercised" like Mike is doing his deal.

Keep after it Mike!

Tom V.

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  #196  
Old 04-10-2016, 01:31 AM
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Quote:
Originally Posted by Jack Gifford View Post
... are the retainers a good (snug) fit in the springs?...
I asked this because of the adjacent valve in the photo- the non-concentricity of the retainer with the O.D. of the top of the spring is visible. So the retainer's shoulder must not be a snug fit in the spring I.D. This, in combination with the skimpy retainer O.D. and cross section in that area (considering the extreme loading), would cause me to suspect retainer failure.

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  #197  
Old 04-10-2016, 10:32 AM
Gary Kubisch Gary Kubisch is offline
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Mike,

Your car has progressed quite a lot over the last few years.

Can you talk about what you've used fuel-wise from being a mid nine second
combo to what it is now?

  #198  
Old 04-10-2016, 12:17 PM
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Quote:
Originally Posted by Gary Kubisch View Post
Mike,

Your car has progressed quite a lot over the last few years.

Can you talk about what you've used fuel-wise from being a mid nine second
combo to what it is now?
Back in the day with the 477 that was 13.7 cr we ran c14. We tried q16 In 2010 with good results. Still running it now. There are fuels that show more power but they are risky imo.

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  #199  
Old 04-20-2016, 09:18 PM
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Back on the pump again!

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BEING STUPID WORKS THE SAME WAY! The rest of us suffer.
  #200  
Old 04-20-2016, 09:41 PM
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Good luck

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