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Old 10-07-2011, 10:44 PM   #121
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We need to start a poll on what everyone thinks the results of the head pull will reveal.

My vote.......absolutely nothing!
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Old 10-07-2011, 10:49 PM   #122
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Quote:
Originally Posted by JasonC SBB View Post
$260? More like $40 at HF

Or DIY it. (google search it)


please read the posts before it. I am on your side sir. curly would have you believe otherwise though
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Old 10-07-2011, 10:53 PM   #123
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What is taking my head off good for?
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Originally Posted by karter74 View Post
.absolutely nothing!
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Very scary compression numbers on my turbo car-wrong-tom-jones.jpg  
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Old 10-08-2011, 12:38 AM   #124
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if it's good enough to track then why ******* bother pulling head
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Old 10-08-2011, 03:59 AM   #125
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I have $15 that Hustler wasn't at TDC, I have another $15 that he really is pooping blood, and another $15 that he says the word compression 30 times on Sunday at the track day.
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Old 10-08-2011, 04:10 AM   #126
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Originally Posted by miata2fast View Post
I am not convinced that the pressurized cylinders had the exhaust valves closed. If you can hear noise coming out the exhaust, that is one big ******* leak. One that would prevent the cylinder from firing at all.
You can hear a 15% leak if you stick your ear in the tailpipe.
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Old 10-08-2011, 09:59 AM   #127
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Originally Posted by jacob300zx View Post
I have $15 that Hustler wasn't at TDC,
I concur. It would also explain his abnormal timing map.
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Old 10-08-2011, 10:50 AM   #128
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Quote:
Originally Posted by jacob300zx View Post
I have $15 that Hustler wasn't at TDC, I have another $15 that he really is pooping blood, and another $15 that he says the word compression 30 times on Sunday at the track day.
I am 1,000,000.0001% certain the car is time properly, and I swept from -5*-+5* to assure myself that exhaust valves should have closed at some point. Why don't you bend over and let me check your compression?

My spark table is not abnormal for low static compression with a large turbine. Savington and I basically had the same spark tables for a while when he ran the car at 270whp.
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Old 10-08-2011, 10:57 AM   #129
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still got those shiny new valves and seals. mmm delicious.

how about loosening the cam caps and letting the valve springs pull the valves completely closed and doing your leakdown test? is that ill advised?
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Old 10-08-2011, 11:35 AM   #130
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Quote:
Originally Posted by Faeflora View Post
I concur. It would also explain his abnormal timing map.
Monday. I'm packing up the gun and booze for the weekend...oh yeah, and the track stuff.
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Old 10-08-2011, 03:31 PM   #131
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Quote:
Originally Posted by Savington View Post
You can hear a 15% leak if you stick your ear in the tailpipe.
In a reasonably quiet shop you can hear 15% without getting close to the pipe... with your ear near the pipe you can hear it hiss at 4-6% if it's mostly exhaust. Been there...
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Old 10-08-2011, 05:21 PM   #132
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Quote:
Originally Posted by hustler View Post
If this car makes 245whp at 11psi on 60% leak, I'm going to be in for a real treat after a valve job.
Wrong. The burnt valves seal under high cylinder presure just fine. I went from 235rwhp with burnt valves to 235rwhp with new ones.
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Old 10-09-2011, 01:14 PM   #133
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When doing a leakdown test, instead of sticking your ear in the tailpipe or TB, you can listen in the spark plug holes of the other cylinders.

(Aside from also listening in the oil filler cap to check for ring leakage)
Use a hose that you can stick down the plug holes and the other end in your ear.

If you are doing a leakdown in #1, at TDC
..and you hear a hiss in #4 and #2 and not #3, the exhaust valve is leaking
..and you hear a hiss in #4 and #3 and not #2, the intake valve is leaking

If you are doing a leakdown in #2, at TDC
..and you hear a hiss in #3 and #4 and not #1, the exhaust valve is leaking
..and you hear a hiss in #3 and #1 and not #4, the intake valve is leaking

If you are doing a leakdown in #3, at TDC
..and you hear a hiss in #2 and #1 and not #4, the exhaust valve is leaking
..and you hear a hiss in #2 and #4 and not #1, the intake valve is leaking

If you are doing a leakdown in #4, at TDC
..and you hear a hiss in #1 and #3 and not #2, the exhaust valve is leaking
..and you hear a hiss in #1 and #2 and not #3, the intake valve is leaking
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Old 10-10-2011, 01:24 AM   #134
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$90 Cometic head gasket, $40 Fel-Pro, or $200 OEM Mazda?
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Old 10-10-2011, 01:56 AM   #135
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$200 OEM? Finishline has 'em for $61... local dealer in CA gives us the same basic discount, won't one of your local dealers?

http://parts.arlingtonmazda.com/prod...52d271%29.html
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Old 10-10-2011, 01:57 AM   #136
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Quote:
Originally Posted by hustler View Post
$90 Cometic head gasket, $40 Fel-Pro, or $200 OEM Mazda?
BP26-10-271

$80 retail. $49 w/ Comp discount. I expect to be kissed if I'm getting charged $200 for a head gasket.
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Old 10-10-2011, 01:57 AM   #137
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200 for OEM = you are ******* up. My OEM head gasket was 60 bucks.
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Old 10-10-2011, 10:36 AM   #138
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I just ordered one for Rosenthal Mazda. I pulled my head yesterday.

GASKET,CYL. HEAD (BP26-10-271)
BP26-10-271 1 $61.16 USD $61.16 USD
GASKET,HEAD VALVE (BP05-10-235C)
BP05-10-235C 1 $33.24 USD $33.24 USD
Subtotal: $94.40 USD
Shipping: $10.33 USD
Grand Total: $104.73 USD

WIN at life
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Old 10-10-2011, 10:58 AM   #139
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Up pulling the head yet?
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Old 10-10-2011, 11:33 AM   #140
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Quote:
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Up pulling the head yet?
lol, not yet. I'm ******* sore from that broke-*** track.
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