My hero, Delmar.
Basically, you thread a tool (which you can rent at any car parts store—though I’d recommend you skip O’Reilly, as their tools suck) into the spark plug hole, put the throttle all the way down, and crank the engine over (remove the coil wire or fuel pump relay so she doesn’t fire).
As the piston goes up on the…
You’re thinking oil pressure. We’re talking compression.
Thanks Matt for letting Brandon and me crash at your extremely neat crib (seriously, how’s it possible that a bunch college dudes lived in such a tidy apartment?).
120 psi is good for a four-liter. This one had close to that, based on the power and on how it sounded.
Actually, I didn’t take the parts. Figured he needed them more than I (I’ve got quite a pile in my garage as it is).
I’ll bring a few tubes with my on my trip this weekend.
Yeah, you’ll just kick your fan on or open up AGS. You’ll only get higher fan blast temps when you’re at an extreme use case and you can’t maintain your t-stat setpoint.
But then you’ve got bigger problems.
The cat is indeed tightly integrated with the IEM—which means less initial heat loss to the metal. That’s one of the benefits to the smaller package.
It’s true; fan blast temperature will theoretically increase with higher heat load, but the benefit—as far as I can tell—is that you won’t have as intense localized temperatures, which means you can cut down on heat shielding of surrounding vulnerable parts.
*better able to transfer heat away...
It comes down to the fact that, initially, what drives heat out of exhaust is a delta in temperature between the exhaust gas and the metal wall (whether it’s a standard or integrated manifold). Whether you’ve got an IEM or a regular manifold, that metal is at ambient temperature when you start your car, so heat…
Oh yeah, thermal protection of underhood components FTW! (Especially plastics). Also, fewer heat shields mean less weight! So much win.
I kinda like headifold.
It really all depends on the car, but ingesting air CAN be a problem. From a major fuel pump manufacturer:
*through the bottom.
To address the “how low is too low” question in the comments, the answer is: it depends. But above all, you don’t want fuel to get so low that hitting a bump causes your pump to ingest air. Here’s what major pump manufacturer Airtex has to say:
I’ll keep an eye out, but that’s a tough one.
That XJ has the coveted factory spare tire carrier. It’s unobtainium, and I need it.
They draw it up through the top of their tanks. The inlet tube is near the bottom of the tank, but the hose isn’t literally under the tank like on many older vehicles. I’ve changed “from” to “through.”