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porting exhaust bowls, roof is pitting, pics inside please look

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Old Jul 11, 2008 | 07:26 PM
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porting exhaust bowls, roof is pitting, pics inside please look

Is this normal or did I take out to much material while shaping the guides? the heads are 601s and Ive read sitting bulls thread and vizards book but I havent seen or heard anything about this. Any input is welcome. thanks guys
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Old Jul 11, 2008 | 08:37 PM
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ross's Avatar
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Re: porting exhaust bowls, roof is pitting, pics inside please look

Looks good and that is normal on cast iron heads.
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Old Jul 11, 2008 | 09:47 PM
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Re: porting exhaust bowls, roof is pitting, pics inside please look

typical crappy cast!
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Old Jul 11, 2008 | 11:41 PM
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Re: porting exhaust bowls, roof is pitting, pics inside please look

Originally Posted by ross
Looks good and that is normal on cast iron heads.
I agree, don't worry about it. On the intake side a little roughness is a good thing.
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Old Jul 12, 2008 | 07:53 AM
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Re: porting exhaust bowls, roof is pitting, pics inside please look

thanks for the quick responses,,, I got a little nervous. this is the first set of heads Ive ever ported so I dont want to make any BIG mistakes. thanks guys
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Old Jul 12, 2008 | 09:25 AM
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Re: porting exhaust bowls, roof is pitting, pics inside please look

It appears the casting has some porosity. What castings (number) are they?
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Old Jul 12, 2008 | 09:50 AM
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Re: porting exhaust bowls, roof is pitting, pics inside please look

601s
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Old Jul 12, 2008 | 10:40 AM
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Re: porting exhaust bowls, roof is pitting, pics inside please look

get the sandpaper rolls and you will be happy
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Old Jul 14, 2008 | 08:31 AM
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From: chicago
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Re: porting exhaust bowls, roof is pitting, pics inside please look

Heres the one I did last night... I think Im doing okay for my first time Im just not sure how much ,if any, more material to hog out around the base of the guides and the walls.
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