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Search took 0.09 seconds. Search: Posts Made By: Schurkey
Forum: Pontiac - Street Yesterday, 10:32 PM
Replies: 4
Views: 203
Posted By Schurkey
Plumb an air-cleaner restriction indicator into...

Plumb an air-cleaner restriction indicator into the clean side of the air filter. Run the engine WFO, max RPM. See what the results are.

If I wanted a dual-snorkel air cleaner, I'd visit the...
Forum: Pontiac - Street Yesterday, 10:24 PM
Replies: 3
Views: 150
Posted By Schurkey
Yup. "Factory" vapor return was 1/4". A...

Yup. "Factory" vapor return was 1/4".

A genuine fuel return from a return-style regulator is likely to be the same size as the supply plumbing, sometimes one size larger.
Forum: Pontiac - Street 05-29-2024, 09:10 PM
Replies: 168
Views: 10,387
Posted By Schurkey
Depending on cam and compression ratio, that's so...

Depending on cam and compression ratio, that's so fantastically "good" that I would want to confirm that the gauge used is accurate.

Most (NOT all) compression testers use an Industrial...
Forum: Pontiac - Street 05-29-2024, 01:26 AM
Replies: 13
Views: 656
Posted By Schurkey
I would do a leakdown test on AT LEAST #4 and any...

I would do a leakdown test on AT LEAST #4 and any other cylinder that isn't "broken", so you have a good cylinder to compare #4 to. At minimum, a compression test on #4 and a "good" cylinder.
...
Forum: Pontiac - Street 05-29-2024, 01:17 AM
Replies: 5
Views: 210
Posted By Schurkey
ANY vehicle run primarily at part-throttle needs...

ANY vehicle run primarily at part-throttle needs PCV and vacuum advance. Venting crankcase fumes to atmosphere is just TOTALLY irresponsible.

Edelbrock sells a low-profile 90 degree elbow that's...
Forum: Pontiac - Street 05-25-2024, 09:11 PM
Replies: 12
Views: 496
Posted By Schurkey
Vacuum under the throttle plates is not the...

Vacuum under the throttle plates is not the issue.

Vacuum above the throttle plates will not be lessened by opening the secondaries. Would likely make it worse.
Forum: Pontiac - Street 05-25-2024, 09:05 PM
Replies: 10
Views: 588
Posted By Schurkey
How old are they? How many miles? How do you...

How old are they? How many miles? How do you drive? Is there excessive blow-by? Does the engine have oil-consumption problems? Is there sufficient baffling of the PCV valve?

You're concerned...
Forum: Pontiac - Street 05-24-2024, 11:51 PM
Replies: 4
Views: 236
Posted By Schurkey
No such thing as MAPP gas any more. Hasn't been...

No such thing as MAPP gas any more. Hasn't been made in a dozen years or so. I have about half of a bottle left. Saving it for a special occasion.

NOW, they're selling "MAP-Pro" which is...
Forum: Pontiac - Street 05-24-2024, 11:34 PM
Replies: 12
Views: 496
Posted By Schurkey
The worst thing that folks can do to an...

The worst thing that folks can do to an oiled-gauze air filter is to clean it too often.
The second-worst thing folks can do is to over-oil the filter, especially on a vehicle using a MAF sensor. ...
Forum: Pontiac - Street 05-24-2024, 04:42 AM
Replies: 10
Views: 588
Posted By Schurkey
The fitting in the intake manifold should be...

The fitting in the intake manifold should be extra-long, with orifices allowing the fumes into both the upper runner, and the lower runner.

Maybe you have the wrong fitting. Pull it out for...
Forum: Pontiac - Street 05-24-2024, 12:03 AM
Replies: 10
Views: 588
Posted By Schurkey
How do you have the PCV system routed? What...

How do you have the PCV system routed? What intake manifold? What engine?

Most OEM systems attempt to divide PCV fumes as evenly as practical among all the cylinders, typically by splitting the...
Forum: Pontiac - Street 05-23-2024, 08:47 PM
Replies: 8
Views: 380
Posted By Schurkey
Decent drill motor, wire brush. Remove all loose...

Decent drill motor, wire brush. Remove all loose carbon and rust. Will make the valve seats easier to see.

No sense putting ten cents of machine work into those heads until after you've played...
Forum: Pontiac - Street 05-22-2024, 05:32 PM
Replies: 7
Views: 477
Posted By Schurkey
I don't know about Pontiac-specific gas...

I don't know about Pontiac-specific gas pedal/kickdown switches.

There are at least two designs of '68--'72 A-body kickdown switches, and the matching gas pedal/mounting. I have the "wrong"...
Forum: Pontiac - Street 05-19-2024, 10:14 PM
Replies: 7
Views: 342
Posted By Schurkey
Pop the speedo cable out of the speedo, see if...

Pop the speedo cable out of the speedo, see if the noise goes away or at least changes.
Forum: Pontiac - Street 05-16-2024, 12:55 PM
Replies: 16
Views: 358
Posted By Schurkey
Virtually every car with (front) disc brakes, or...

Virtually every car with (front) disc brakes, or 4-wheel discs has a power booster.

Disc brakes have very little self-energizing action, and what little they have reduces as the pads wear.
...
Forum: Pontiac - Street 05-14-2024, 01:13 PM
Replies: 32
Views: 824
Posted By Schurkey
You are WAY over-thinking this. "Priming"...

You are WAY over-thinking this.

"Priming" involves removing air from the oiling system--oil pump, filter, the larger oil galleries. It is NOT intended to spray oil over the fenders from the...
Forum: Pontiac - Street 05-14-2024, 02:11 AM
Replies: 8
Views: 349
Posted By Schurkey
No, it does not make sense. Describe what...

No, it does not make sense.

Describe what the steering wheel does.


What about thickness variation?
Forum: Pontiac - Street 05-13-2024, 11:21 PM
Replies: 10
Views: 387
Posted By Schurkey
Any engine with non-adjustable rockers does not...

Any engine with non-adjustable rockers does not change geometry with pushrod length. Pushrod length changes affect lifter plunger preload only.

Pontiac with "bottleneck" studs and nuts torqued to...
Forum: Pontiac - Street 05-13-2024, 11:02 PM
Replies: 8
Views: 349
Posted By Schurkey
WHAT DO YOU MEAN "feeling braking in my steering...

WHAT DO YOU MEAN "feeling braking in my steering wheel"?

What does the steering wheel DO? Shake? If so, most-likely cause is warped rotor(s), but pull the handle on the park brake, gradually...
Forum: Pontiac - Street 05-12-2024, 02:01 AM
Replies: 17
Views: 771
Posted By Schurkey
Acetylene or Propane plus Oxygen is much hotter,...

Acetylene or Propane plus Oxygen is much hotter, works WAY better.

As said--heat the plug, not the casting.


Tried that once. Enormously too much oil along with the refrigerant. Messy as...
Forum: Pontiac - Street 05-12-2024, 01:50 AM
Replies: 36
Views: 1,268
Posted By Schurkey
Dinosaurs all died 65 million years ago. Ten...

Dinosaurs all died 65 million years ago. Ten years on processed oil doesn't seem that much by comparison.
Forum: Pontiac - Street 05-11-2024, 02:23 PM
Replies: 32
Views: 1,885
Posted By Schurkey
Not what I'd expect. I'm not in a position to...

Not what I'd expect. I'm not in a position to challenge B&M, but I'd have expected 170--200 in the pan, not in the cooler return-tube. Many modern cars have transmission temperature sensors on the...
Forum: Pontiac - Street 05-06-2024, 01:24 AM
Replies: 10
Views: 596
Posted By Schurkey
.031625 X 1.5 = .0474 But with .120 plunger...

.031625 X 1.5 = .0474

But with .120 plunger travel, it won't matter.
Forum: Pontiac - Street 05-05-2024, 03:17 PM
Replies: 10
Views: 596
Posted By Schurkey
I don't think it's anywhere near as critical as...

I don't think it's anywhere near as critical as some folks have made it out to be.

How much lifter plunger travel do your lifters have? I've seen OEM lifters with more than a quarter-inch of...
Forum: Pontiac - Street 05-05-2024, 04:01 AM
Replies: 10
Views: 596
Posted By Schurkey
That's .031 at the adjuster nut. Not .031 at the...

That's .031 at the adjuster nut. Not .031 at the lifter plunger where it matters. You're not taking rocker ratio into account. The lifter plunger is being depressed more than .031.


Yes, IF...
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