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Forum: Pontiac - Street 05-06-2024, 01:24 AM
Replies: 10
Views: 464
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: 464
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: 464
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...
Forum: Pontiac - Street 05-02-2024, 04:12 PM
Replies: 20
Views: 757
Posted By Schurkey
I'd expect that would lower volume, but not...

I'd expect that would lower volume, but not pressure. May be so slight that you'd never notice.

Pressure is set via the internal spring.
Forum: Pontiac - Street 04-30-2024, 07:01 PM
Replies: 10
Views: 532
Posted By Schurkey
THANK YOU. Not many folks recognize the...

THANK YOU. Not many folks recognize the difference between Torque/Angle and TTY.

I paint a stripe down the shank of torque/angle bolts. When I remove them later, if the paint stripe is twisted,...
Forum: Pontiac - Street 04-22-2024, 01:49 AM
Replies: 43
Views: 2,219
Posted By Schurkey
Yeah, GM kept that a complete secret. Who would...

Yeah, GM kept that a complete secret. Who would have ever guessed that there was a resistor bypass wire? Certainly not an outside company designing products to be used on GM products. (Moreover,...
Forum: Pontiac - Street 04-19-2024, 04:38 PM
Replies: 43
Views: 2,219
Posted By Schurkey
I haven't dicked with points for thirty years. I...

I haven't dicked with points for thirty years. I make sure that every vehicle I own has an electronic ignition; and there's none better than the good ol' GM Delco HEI in good usable condition. The...
Forum: Pontiac - Street 04-02-2024, 01:14 AM
Replies: 20
Views: 1,340
Posted By Schurkey
If you readjust the choke pulloff, you also need...

If you readjust the choke pulloff, you also need to verify and perhaps readjust the linkage down to the fast idle cam.

The pulloff gets adjusted so the engine runs right--not too rich, not too...
Forum: Pontiac - Street 04-02-2024, 12:17 AM
Replies: 15
Views: 780
Posted By Schurkey
I don't understand why folks want to crank the...

I don't understand why folks want to crank the engine longer than needed. Fire the biitch up, get the oil pump spinning. Oil pressure builds quickly, oil film wedge builds almost instantly. Oil...
Forum: Pontiac - Street 03-27-2024, 11:11 PM
Replies: 8
Views: 664
Posted By Schurkey
I try to start all my core engines...assuming...

I try to start all my core engines...assuming they're in fully-assembled condition to begin with. Fresh oil and filter is recommended.
Forum: Pontiac - Street 03-25-2024, 05:10 PM
Replies: 31
Views: 1,752
Posted By Schurkey
Several errors and outright omissions in that...

Several errors and outright omissions in that video, none of which really matter. Kinda torques my jowls, though.

Also some good tips--using a spark tester in addition to an ohmmeter to test...
Forum: Pontiac - Street 03-24-2024, 03:53 AM
Replies: 23
Views: 1,191
Posted By Schurkey
First Guess: Both of you need to put the Severe...

First Guess: Both of you need to put the Severe Duty fan clutch in the recycle bin, and get a fan clutch actually recommended for your vehicles...which is almost certainly the standard-duty clutch. ...
Forum: Pontiac - Street 03-17-2024, 01:18 AM
Replies: 31
Views: 1,752
Posted By Schurkey
Worthwhile. Good news. Not...

Worthwhile.


Good news.


Not unusual.


I have the sense that you won't feel right until you inspect the lifters and cam lobes. I suggest you remove and disassemble them one at a time for...
Forum: Pontiac - Street 03-13-2024, 07:01 PM
Replies: 13
Views: 703
Posted By Schurkey
You are WAY more generous than I would be. I'd...

You are WAY more generous than I would be. I'd cut those prices in half.

Remember that this engine was so disappointing that the previous owner cut his losses after twenty miles.
Forum: Pontiac - Street 03-11-2024, 03:23 AM
Replies: 25
Views: 1,075
Posted By Schurkey
I'd be ten times more likely to cram-in a 4L80E...

I'd be ten times more likely to cram-in a 4L80E or similar (4L85E) than to buy and build-up a 200-4R.

The '80E is inherently much stronger than the 200, but would need an electronic controller,...
Forum: Pontiac - Street 03-10-2024, 07:42 PM
Replies: 64
Views: 3,170
Posted By Schurkey
Tires last fifteen minutes, or fifteen years. ...

Tires last fifteen minutes, or fifteen years. Depends on how they're used.

The tire industry has some *insane* recommendations, clearly designed by product-liability lawyers not engineers.

...
Forum: Pontiac - Street 03-10-2024, 07:29 PM
Replies: 39
Views: 2,187
Posted By Schurkey
Thinnest oil that gives acceptable hot idle oil...

Thinnest oil that gives acceptable hot idle oil pressure, within reason.

GM went on a big crusade decades ago to get people away from 10W-40. This was beaten into our heads at the GM Dealership...
Forum: Pontiac - Street 03-09-2024, 01:20 AM
Replies: 16
Views: 1,129
Posted By Schurkey
Sure. Warm or cold, doesn't make a lot of...

Sure. Warm or cold, doesn't make a lot of difference. Cold tends to produce slightly lower pressures. Yes, absolutely disconnect power from the HEI for the reasons described previously.

Some...
Forum: Pontiac - Street 03-04-2024, 02:36 AM
Replies: 15
Views: 1,058
Posted By Schurkey
Theoretically, you don't need to leave the...

Theoretically, you don't need to leave the solenoid off to pull the drive into engagement with the ring gear. The starter housing has a slot on the underside that you cram a pick or thin screwdriver...
Forum: Pontiac - Street 03-04-2024, 12:46 AM
Replies: 31
Views: 1,752
Posted By Schurkey
Ideally you would NOT pull plug wires off the...

Ideally you would NOT pull plug wires off the plugs with the engine running. This is very hard on the insulation of the secondary side of the ignition system, including the windings inside the...
Forum: Pontiac - Street 02-29-2024, 02:55 AM
Replies: 26
Views: 1,629
Posted By Schurkey
Sam Agnew had a major issue with Fel-Pro 1018...

Sam Agnew had a major issue with Fel-Pro 1018 gaskets, there's an oblong hole in them that was allowing an oil path on his home-ported Edelbrock heads. He replaced the oblong-hole Fel-Pros with...
Forum: Pontiac - Street 02-25-2024, 11:45 PM
Replies: 31
Views: 1,576
Posted By Schurkey
You can be just about guaranteed that the rear...

You can be just about guaranteed that the rear leaf springs are broken if they're OEM GM springs--never mind the actual original springs the car was born with.

Firebird, Camaro, NOVA (Nova, Omega,...
Forum: Pontiac - Street 02-25-2024, 01:10 AM
Replies: 19
Views: 1,001
Posted By Schurkey
Every manufacturer I can think of mounted...

Every manufacturer I can think of mounted oil-filled coils on the engine, Pontiac included. Yes, the coil was typically mounted fairly close to the distributor.

The problem now is not so much...
Forum: Pontiac - Street 02-21-2024, 09:10 PM
Replies: 21
Views: 1,264
Posted By Schurkey
...and a thicker head gasket kills quench/squish,...

...and a thicker head gasket kills quench/squish, also leading to potentially more knock/ping.
Forum: Pontiac - Street 02-17-2024, 11:19 AM
Replies: 18
Views: 776
Posted By Schurkey
The "Ford solenoid" on the fender doesn't work...

The "Ford solenoid" on the fender doesn't work with typical permanent-magnet gear reduction (PMGR) starters. The starter doesn't disengage cleanly, so they tend to grind the flywheel and starter...
Showing results 1 to 25 of 403

 
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