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reading tune from inside headers

 
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10sec.et
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Joined: 29 Mar 2006
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Location: Houston,Texas
347040.52 points


1969 Oldsmobile Cutlass

PostPosted: Sat Feb 13, 2010 3:11 am    Post subject: reading tune from inside headers Reply with quote

ive been told that you can read the inside of your headers same as you would the spark plugs and determine if your tune is off. mine are pretty clean..........





any thoughts on this ? based on my plug readings, its just about right. the pistons seem to be happy with it..........



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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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Big Dave
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PostPosted: Sat Feb 13, 2010 1:08 pm    Post subject: Reply with quote

Only tune I know of from inside of headers is EGT via thermocouples and oxygen content from a sensor.

They are definitley white (I would have expected a darker shade of grey but that could just be the flash overpowering the image).

Are you running a diesel? Those are some stout appearing pistons!

Wish I could be of more help.

Big Dave
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Knarley Darley
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PostPosted: Sun Feb 14, 2010 12:55 am    Post subject: Reply with quote

My headers look pretty white to light grey also unless it is starting to wheeze oil. Then they look black and feel greasy. What fuel are you running? Pistons still look round, so thats good.
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squeeezer
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1991 Chevrolet Camaro

PostPosted: Sun Feb 14, 2010 3:09 am    Post subject: Reply with quote

are those old trw's???

how much time on this motor?

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10sec.et
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Joined: 29 Mar 2006
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Location: Houston,Texas
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1969 Oldsmobile Cutlass

PostPosted: Mon Feb 15, 2010 12:25 am    Post subject: Reply with quote

i believe the fuel was VP 110. i know its purple and whatever 110 octane fuel they sell at HMP. pistons are some old forged TRWs. they have been in that engine for over 10 years. didnt get a lot of street driving (maybe 1500 miles) but over the last year or more they have seen several 15 lb bottles of nitrous.
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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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squeeezer
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Joined: 02 Mar 2007
Posts: 2427
Location: new richmond WI
191524.76 points


1991 Chevrolet Camaro

PostPosted: Mon Feb 15, 2010 1:00 pm    Post subject: Reply with quote

i remember many years ago i ran 110 race fuel through an old 71 camaro i had and the exhaust was always white in that one and i really dont know what to make of that
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Paul P
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1971 Chevrolet Chevelle

PostPosted: Mon Feb 15, 2010 9:52 pm    Post subject: Reply with quote

So what is the prognosis on this motor? It does not seem to be in bad shape. Did you expect more carnage than you see?
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2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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10sec.et
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Joined: 29 Mar 2006
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Location: Houston,Texas
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1969 Oldsmobile Cutlass

PostPosted: Tue Feb 16, 2010 12:27 am    Post subject: Reply with quote

Paul P wrote:
So what is the prognosis on this motor? It does not seem to be in bad shape. Did you expect more carnage than you see?


i havent got down to the bearings yet. so far, its exactly as i expected it would be. im guessing it has a couple mains going away, hence the bearing material in the oil filter and the cause of the rear main leak. what will really surprise me is if i dont find any significant wear on the bearings. im mainly tearing it down now because Olds blocks are hard to find nowdays and scattering it all over the track makes it difficult to put back together.

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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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Paul P
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Joined: 15 Aug 2002
Posts: 2449
Location: Townsend, Mass.
83052.36 points


1971 Chevrolet Chevelle

PostPosted: Tue Feb 16, 2010 12:32 am    Post subject: Reply with quote

10sec.et wrote:
Paul P wrote:
So what is the prognosis on this motor? It does not seem to be in bad shape. Did you expect more carnage than you see?


i havent got down to the bearings yet. so far, its exactly as i expected it would be. im guessing it has a couple mains going away, hence the bearing material in the oil filter and the cause of the rear main leak. what will really surprise me is if i dont find any significant wear on the bearings. im mainly tearing it down now because Olds blocks are hard to find nowdays and scattering it all over the track makes it difficult to put back together.


Makes good sense then cool. I know what you mean as they are not as easy to come by these days and the safety factor of not scattering it on the track.

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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