karter74

iTrader: (4)

We need to start a poll on what everyone thinks the results of the head pull will reveal.

My vote.......absolutely nothing!

Seefo

iTrader: (5)

please read the posts before it. I am on your side sir. curly would have you believe otherwise though

hustler

iTrader: (6)

What is taking my head off good for?

Faeflora

iTrader: (2)

if it's good enough to track then why ******* bother pulling head

jacob300zx

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.

Savington

iTrader: (31)

You can hear a 15% leak if you stick your ear in the tailpipe.

Faeflora

iTrader: (2)

I concur. It would also explain his abnormal timing map.

hustler

iTrader: (6)

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.

y8s

iTrader: (8)

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?

hustler

iTrader: (6)

Monday. I'm packing up the gun and booze for the weekend...oh yeah, and the track stuff.

Rennkafer

iTrader: (3)

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...

Laur3ns

Wrong. The burnt valves seal under high cylinder presure just fine. I went from 235rwhp with burnt valves to 235rwhp with new ones.

JasonC SBB

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

hustler

iTrader: (6)

$90 Cometic head gasket, $40 Fel-Pro, or $200 OEM Mazda?

Rennkafer

iTrader: (3)

$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

Savington

iTrader: (31)

BP26-10-271

$80 retail. $49 w/ Comp discount. I expect to be kissed if I'm getting charged $200 for a head gasket.

MartinezA92

iTrader: (4)

200 for OEM = you are ******* up. My OEM head gasket was 60 bucks.

miatauser884

iTrader: (11)

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

jacob300zx

Up pulling the head yet?

hustler

iTrader: (6)

lol, not yet. I'm ******* sore from that broke-*** track.