turborx8

iTrader: (1)

I overpaid for them $245 because I got them locally. I was going to order them from Jeff but he said they were on back order.

Mazsport sells the couplers for $163.76 without the t-blot clamps.

MazdaManiac

iTrader: (3)

I guess I'm too cheap at $160 with the t-bolts!

turborx8

iTrader: (1)

Yeah, you're price is excellent!!!

What brand of couplers do you sell?

MazdaManiac

iTrader: (3)

They are un-branded Samco mostly.

Grouch

static's right about pressure and vac. but just for the sake of comparison, the greddy boost guage shows PSI over zero and in Hg in the 'other' direction under zero, not in negative numbers. The location is just below the zero so i guess it semi-implies they are negative but they are not labelled so. So mine makes logical sense and shows about 15 in Hg at idle. This '15' is below the zero at idle. So my vac can pull 15" Hg vacuum in the standard column at idle. Maybe this is what turborx8 and mysqyl are talking about when looking at their greddy boost guages? i'll snap a pic and come back

wait, here's a pic of mine: http://www.corsportusa.com/store/catalog/images/895.jpg

so the needle when the car is off is at over 30 in Hg. mine pulls 15 at idle after warm up. do i have a leak?

mysql

15 is pretty weak. Does it get higher? I would guess your engine either has a vacuum leak or is losing compression.

MazdaManiac

iTrader: (3)

Boost gauges mostly read in absolute, but with zero referenced to mean atmo (101kPa). Some read in relative pressure, however.
So, the negative numbers are in relative measure to sea-level atmo at STP on an absolute gauge or relative to local baro on a relative gauge.

15" is a bit weak (it is below spec, anyway). You want to see about 17".
Some of the sea-level guys see 21"!

Grouch

when my car is cold at idle its about 20, which would make sense since if the air warms up p increases so when my car is hot, at idle vac decreases to 15. is that still below spec for a 'warm' car?

Cattywampus

The delivery guy has a turbo and stole them

mysql

Yeah, I take back what I said earlier. The greddy gauge has a small inHg text that defines what it's measuring under 0. The values measured above and below are marked off differently, so it's not just a negative value of the same measurement that it's pointing to.

So as long as the OP is talking about inch of mercury, then we're set.

My idle is 17-19 most of the time (warmed up), but largely depends on temp, and what's running on the car. Engine braking is the only way I see -21 and -22 though. I'm not sure what my idle vacuum reading is when cold.

MazdaManiac

iTrader: (3)

My motor (with average compression) runs about 16" - 17" most of the time at idle when it is hot.
Since it is an absolute gauge, It goes up when I head out to lower altitudes (I'm at 1000 ft) and takes a pretty significant nose-dive when I go up the hill (at 7500 ft in Prescott, I see as low as 13").

turborx8

iTrader: (1)

I get 19" when cold and 17" when warm.

I wonder why it only drops 2" when Grouch drops 5" between cold/warm.

I am about 300ft above sea level.

turborx8

iTrader: (1)

Bingo!

I use royal purple 5w30 with OMP adapter and premix 8oz of Idemitsu 2stroke oil per full tank of 94 octane fuel.

turborx8

iTrader: (1)

I doubt it.

I put 6,000miles on my car and not a single ounce is missing from my reservoir. My OMP is definately dead.

MazdaManiac

iTrader: (3)

The AP should change that. We can crank it with my "MAX OIL" program and see if it starts smoking.
If not, then your OMP might be dead. Mine was.

I still pre-mix a little to cover the "dead spot" between the oil nozzles.

turborx8

iTrader: (1)

I sent you a couple emails with my mod list so that you can send me the AP maps. I will definately need you're "MAX OIL" program.

Grouch

I'm going to grab some local no-name silicone ones too, with t-bolts, but I doubt we'll need them. The people who had problems with them live in places like Florida, Texas and Arizona. Our summers are probably cooler than their winters. It is snowing here right now. Florida I can understand, but I thought there were only pickup trucks in Texas and dune buggies in Arizona. Well, I guess we learn something new everyday. Being in Canada, we probably need the silicone more for it's low temperature properties, lol. And I like the feel of silicone

ChattyRX8

Nope. Still haven't received them. Tracking #?