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Bugorsh
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« on: September 24, 2010, 02:17:40 pm » |
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Does anyone have picts of the case porting? I am about to do some mock ups for final assembly on my new engine and would like to port the case before final assy. I have an idea as to where to port it, but seeing some picts would go a long way toward doing it correctly. Any pictures, descriptions, dimensions on how much or links to a 'how to' would be greatly appreciated.
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In Pursuit of Superior Handling!
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Ohio Tom (DdK)
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« Reply #1 on: September 24, 2010, 05:00:17 pm » |
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I will work on downsizeing some...
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Ohio Tom Simpson. Home of the Killa' Bee.
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Ohio Tom (DdK)
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« Reply #2 on: September 24, 2010, 05:10:26 pm » |
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I f you look around the top of the case where the rod clearanceing is done. You'll see additonal clearancing above the #2 bearing saddle. This opens up a large path for air flow.
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Ohio Tom Simpson. Home of the Killa' Bee.
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Ohio Tom (DdK)
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« Reply #3 on: September 24, 2010, 05:12:13 pm » |
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This is inside and outside views of the port work on the side ports. It looks like ass, but it's actually much smoother than it looks.
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Ohio Tom Simpson. Home of the Killa' Bee.
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maui
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« Reply #4 on: September 24, 2010, 11:42:17 pm » |
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Is that a big crack across the center main. The one only I can see. See um, See um.
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Kehau
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Ohio Tom (DdK)
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« Reply #5 on: September 25, 2010, 12:09:15 am » |
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No, No cracks.
I think you may be mistaking a parting line flash for a crack?? Maybe?
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Ohio Tom Simpson. Home of the Killa' Bee.
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Sam
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« Reply #6 on: September 25, 2010, 11:11:12 am » |
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No, No cracks.
I think you may be mistaking a parting line flash for a crack?? Maybe?
I have a 1776 i tore down that the #2 bearing saddle is cracked, any fixes? |
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embarrassing V8 guys since 2002
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Bruce Tweddle
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« Reply #7 on: September 25, 2010, 12:57:58 pm » |
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I have a 1776 i tore down that the #2 bearing saddle is cracked, any fixes?
Nope, your case is done. |
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theastronaut
Newbie
 Offline
Posts: 26
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« Reply #8 on: September 26, 2010, 01:49:33 pm » |
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theastronaut
Newbie
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Posts: 26
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« Reply #9 on: September 26, 2010, 02:04:55 pm » |
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superdrag
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« Reply #10 on: September 26, 2010, 04:57:11 pm » |
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Ya, 4 pages of typical Samba back and forth. Does anyone have any REAL data to prove that case porting does anything? So far I haven't seen any. |
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Carol's not grungy, she's bitchin'.
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Bruce Tweddle
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« Reply #11 on: September 26, 2010, 06:44:40 pm » |
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Does anyone have any REAL data to prove that case porting does anything? So far I haven't seen any. Same here. I even saw a good argument for blocking the internal passages, then putting a PCV valve in the roof of the case above each pair of opposing rods. |
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maui
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« Reply #12 on: September 26, 2010, 07:25:20 pm » |
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A Tom only joking. Looks good to me and better than mine.
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Kehau
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Ohio Tom (DdK)
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« Reply #13 on: September 26, 2010, 10:12:00 pm » |
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Cool Maui....
On that Samba post.. That's exactly why I don't hang out there anymore.
No matter what idea you throw out, it gets criticized every which way.
I do case porting becuase I know it works on the motors I build.
Over the many motors I have built, I feel as thou I can say for sure that it works at keeping oil from turing to mist and ending up in the breather.
That's enough for me. But, not enough for thesamba folks...
If you have doubt or other ideas, then don't do it....
(sorry about my Samba rant). No hard feelings.
Astronaut.. Those are some nice photos. Nice work.
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Ohio Tom Simpson. Home of the Killa' Bee.
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KAFUR1
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« Reply #14 on: September 26, 2010, 10:22:30 pm » |
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I just noticed my cased has been ported and I was not even aware it had been done  |
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stealth67vw
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« Reply #15 on: September 26, 2010, 11:53:35 pm » |
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I've seen crankcase porting/boat tailing mentioned in a few Porsche 911 performance books. One book claimed 20 horsepower increase on a dyno on a 6 cylinder 2.7 NA engine. I can't seem to find the book or pics on the net. I do it but more for stress riser reduction than increased breathing.
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John Bates
Out to prove I have nothing to prove
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Bruce Tweddle
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« Reply #16 on: September 27, 2010, 03:41:33 am » |
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One book claimed 20 horsepower increase on a dyno on a 6 cylinder 2.7 NA engine. That's the biggest load of crap I've heard in years. If they freed up 20hp, then that means every engine without that treatment would be creating 20hp worth of extra heat. That's 15kW, or the equivalent of TEN 1500W electric heaters. Energy can't be created or destroyed, it can only be converted from one form to another. |
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stealth67vw
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« Reply #18 on: September 27, 2010, 08:51:38 pm » |
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That's the biggest load of crap I've heard in years. If they freed up 20hp, then that means every engine without that treatment would be creating 20hp worth of extra heat. That's 15kW, or the equivalent of TEN 1500W electric heaters.
Energy can't be created or destroyed, it can only be converted from one form to another.
It must be true, I read it in a book. I was very skeptical when I read it. I could see 1 or 2 hp being feasible on the 911. On a side note, Fred Simpson at Performance Technology offered case porting services. |
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John Bates
Out to prove I have nothing to prove
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KAFUR1
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« Reply #19 on: September 27, 2010, 11:39:07 pm » |
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 I was looking at my case more tonight and saw most of the kool mods that you can do to your case! Pretty kool I am stoked this motor is going to be Bad Ass I am going to do the one mod on top the pickup tube holes & Also going to get the 911 squirters Installed .
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Bugorsh
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« Reply #20 on: October 06, 2010, 08:40:01 pm » |
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Thanks for all the input and picts. They will be helpful in deciding which way to go. |
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In Pursuit of Superior Handling!
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