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Search: Posts Made By: johnsonm
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Forum: Tech / General Engine
10-20-2008, 05:43 AM
Replies: 7
Views: 869
Posted By johnsonm

Re: oil in distributor

100k on distributor +/-

Not too many on bottom end, but was of questionable build quality.

Would large amounts of blowby from poorly honed cylinder walls do things like push oil up...
Forum: Tech / General Engine
10-19-2008, 01:52 PM
Replies: 7
Views: 869
Posted By johnsonm

Re: oil in distributor

Well, aftermarket valve covers are on, but have pcv valve on one side and breather on the other. PCV valve looks clean and rattles when you shake it, breather looks clean enough.

What else should...
Forum: Tech / General Engine
10-19-2008, 09:23 AM
Replies: 7
Views: 869
Posted By johnsonm

oil in distributor

How common is it for engine oil to leak up throught the distributor shaft housing and collect in the distributor (under the rotor, or pick up coil, base of dist top, etc)?

Could this cause a...
Forum: Cooling
08-01-2007, 03:03 PM
Replies: 1
Views: 8,774
Posted By johnsonm

Difference between heavy duty R4 compressor and light duty?

I see R4 A/C compressors were used in lots of different vehicles from the late 70's to mid 90's.

Some have standard threads, some metric, I've got that part.

Some are listed as "heavy duty"...
Forum: Cooling
07-24-2007, 03:47 PM
Replies: 4
Views: 1,053
Posted By johnsonm

Re: best place to buy AC Evac pump and tools

If you don't want to buy a vacuum pump and gauges, see if your local Autozone has them on loaner-tool.

I borrowed an electric vacuum pump (forget the brand, but it's really heavy and works well)...
Forum: Cooling
07-11-2007, 02:39 PM
Replies: 38
Views: 22,083
Posted By johnsonm

Re: R406a "Autofrost" review

I bought some off e-bay from Frosty Freeze products. The sale said he had 12 cans available, I bought 7. So ???

DO NOT buy the special adapter hose from the same place, it is total crap. It...
Forum: Cooling
07-10-2007, 02:30 PM
Replies: 2
Views: 450
Posted By johnsonm

Re: Best A/C conversion web site

Have you looked at this yet?

https://www.thirdgen.org/retrofitac
Forum: Cooling
07-09-2007, 08:24 PM
Replies: 3
Views: 4,265
Posted By johnsonm

Re: What's the trick to installing an orifice tube?

I guess it's the right one, the number on the package is the same one listed on the NAPA part look up web site.

Looks the same as the one that came out.

I borrowed a orifice valve remover tool...
Forum: Cooling
07-09-2007, 03:40 PM
Replies: 0
Views: 796
Posted By johnsonm

How many total ounces of oil for A/C system?

I completely flushed my air conditioning system and have a new compressor (no oil in compressor).

Any one know how many ounces of oil is required for the whole system?

Thanks!
Forum: Cooling
07-06-2007, 05:57 PM
Replies: 3
Views: 4,265
Posted By johnsonm

What's the trick to installing an orifice tube?

I got a new orifice tube from NAPA, should be a good one. I cannot seem to push it in far enough. Takes so much effort the screen part of the tube bends / folds up.

I got the old one out ok,...
Forum: Cooling
07-05-2007, 04:49 PM
Replies: 0
Views: 926
Posted By johnsonm

Schrader valve core sizes for A/C

Are the schrader valve cores used in refrigeration fittings different than those used in other common schrader valves, like tire valves?

Is it common to replace these when servicing a/c to prevent...
Forum: Carburetors
07-02-2007, 12:47 PM
Replies: 13
Views: 628
Posted By johnsonm

Re: got big problems please help im stumped!

If it is the timing, try advancing it until the engine smooths out and possibly increases in RPM and try driving again. Adjust a little by little to see if there is any change.

If you think the...
Forum: Carburetors
07-02-2007, 11:37 AM
Replies: 13
Views: 628
Posted By johnsonm

Re: got big problems please help im stumped!

When you set the timing, did you use a gun or set it by ear?

Everytime I set the timing by ear, where it sounded really mean idling in the driveway, it was always like 10 degrees retarded (atdc),...
Forum: Cooling
07-02-2007, 11:22 AM
Replies: 4
Views: 1,906
Posted By johnsonm

Re: What's the best refrigeration system flush?

Borrowed a flush gun and bought the dedicated A/C Flush.

Which by the way says "DANGER -- Extremely combustable Liquid!" right on the front.

Wouldn't most quick drying solvents be...
Forum: Cooling
06-29-2007, 07:12 PM
Replies: 4
Views: 1,906
Posted By johnsonm

What's the best refrigeration system flush?

What's the best thing to flush your A/C system with?

I've heard rubbing alcohol, mineral spirits, liquor thinner, benzene, that stuff they sell in a can for $12 / quart called A/C flush… Anyone...
Forum: Cooling
06-29-2007, 07:04 PM
Replies: 38
Views: 22,083
Posted By johnsonm

Re: R406a "Autofrost" review

Probably, but real world credentials may add or detract relevance to a post.
Forum: Cooling
06-29-2007, 03:12 PM
Replies: 38
Views: 22,083
Posted By johnsonm

Re: R406a "Autofrost" review

naf, are you in the refrigeration business? What is 410A? What do you use it for?

Reid, how long have you been converted to R406 now? Any of your peeps use this stuff before you and convince...
Forum: Cooling
06-27-2007, 11:27 AM
Replies: 38
Views: 22,083
Posted By johnsonm

Re: R406a "Autofrost" review

Right, got the gauges, have a pretty good basic idea of how the refrigeration system works, now here to learn some of the details, like how to adjust the pressure switches.

Can using a refrigerant...
Forum: Cooling
06-27-2007, 08:40 AM
Replies: 38
Views: 22,083
Posted By johnsonm

Re: R406a "Autofrost" review

Are pressure switches adjust similarly to knock sensor? Tighter = more sensativity???

How does one go about adjusting pressure switches?

Thanks!

Also, the evaporator is burried deep in the...
Forum: Cooling
06-26-2007, 03:34 PM
Replies: 38
Views: 22,083
Posted By johnsonm

Re: R406a "Autofrost" review

Hey Reid,

You said this stuff WILL install with a plain ol' R-12 charge hose and can fitting?

I got my 609 certification and ordered several cans and all needed A/C parts. I was just studying...
Forum: Cooling
06-22-2007, 03:28 PM
Replies: 5
Views: 4,569
Posted By johnsonm

Re: A/C compressor with V belts and vortec heads and intake

This is the bracket I am trying to find a substitute for. Circled in yellow.
Forum: Cooling
06-22-2007, 11:44 AM
Replies: 38
Views: 22,083
Posted By johnsonm

Re: R406a "Autofrost" review

Can you disclose where you got it and how much it cost? Is that allowed?

Thanks!
Forum: Cooling
06-22-2007, 11:23 AM
Replies: 1
Views: 579
Posted By johnsonm

Re: constant fan running?

If I recall correctly,

Find the fan switch (mine is in the head on the passenger side) splice the single wire coming from it. Do not cut it. Run the spliced wire and another wire hooked to a...
Forum: Cooling
06-22-2007, 10:39 AM
Replies: 5
Views: 4,569
Posted By johnsonm

Re: A/C compressor with V belts and vortec heads and intake

naf, your awsome, I figured you'd know. I know for sure I have that mounting hole (the one by the carb pad that the bar is hooked to). What is that bracket bolted to on the very front of the intake...
Forum: Cooling
06-22-2007, 08:49 AM
Replies: 5
Views: 4,569
Posted By johnsonm

A/C compressor with V belts and vortec heads and intake

Anyone run vortec heads with a v-belt set up and have an air conditioning compresser hooked up?

What I am mostly interested in is the top bracket that bolts to the intake. On old intake it was set...
Forum: Tech / General Engine
06-21-2007, 11:27 AM
Replies: 0
Views: 328
Posted By johnsonm

vortec heads and v-belt air conditioning

Anyone run vortec heads with a v-belt set up and have an air conditioning compresser hooked up?

What I am mostly interested in is the top bracket that bolts to the intake. On old intake it was...
Forum: Tech / General Engine
06-21-2007, 11:22 AM
Replies: 13
Views: 2,752
Posted By johnsonm

Re: 76cc heads

Just thinking out loud...

But couldn't you use peremeter bolt valve cover heads, get some el cheapo valve covers and modify the center bolt holes (use little wedges or something) on the intake? ...
Forum: Carburetors
05-21-2007, 09:17 AM
Replies: 7
Views: 1,223
Posted By johnsonm

Re: Dwell useful while driving? ccc q-jet

Always check the easy stuff first!!! Story of my life.

Carburetor to intake mouting bolts were finger tight. Only the weight of the carb was sealing the carb to intake gasket.

I'm sure I got...
Forum: Suspension and Chassis
05-17-2007, 08:16 PM
Replies: 2
Views: 437
Posted By johnsonm

Re: 15" to 16" wheels

Factory 16's? Slap em on. Unless you got monster truck tires on them for some reason.
Forum: Suspension and Chassis
05-17-2007, 04:43 PM
Replies: 14
Views: 1,370
Posted By johnsonm

Re: cheap but effective subframe?

Hey, xpndbl3

Don't want to be a pain, but do you happen to have any pictures of those installed?

Thanks!
Forum: Tech / General Engine
05-16-2007, 04:10 PM
Replies: 1
Views: 811
Posted By johnsonm

Re: Burn duplicate of the zz4 chip 24502456

Anyone willing to try an experiment?
Forum: Carburetors
05-16-2007, 08:55 AM
Replies: 22
Views: 970
Posted By johnsonm

Re: Just Curious

Pro's use a dynometer. Or go the track at test and tune and adjust timing, bushings, weights and springs untill you get the highest trap speed and/or lowest time.

Breather goes in the valve cover...
Forum: Carburetors
05-15-2007, 07:41 AM
Replies: 4
Views: 688
Posted By johnsonm

Re: junk the ccc carb and dist,worries?

What year lg4?

The cooling fan should work, the switch for it is in the passanger side head.

The A/C should work, it is controlled by a vacuum line from the back of the carb, just make sure...
Forum: Suspension and Chassis
05-09-2007, 01:07 PM
Replies: 14
Views: 1,370
Posted By johnsonm

Re: cheap but effective subframe?

Hey, xpndbl3

Are those "Jegster" sfc's you are referring to? Have you got a p/n for those? I cannot seem to find them.

Thanks!
Forum: Tech / General Engine
05-09-2007, 10:54 AM
Replies: 1
Views: 811
Posted By johnsonm

Burn duplicate of the zz4 chip 24502456

I tried this in the carb board and got deleted from the DIY Prom board. I'll try here.

Since they are discontinued, and the only place I have found any for sale, they are $250.

Is it possible...
Forum: Carburetors
05-07-2007, 07:50 PM
Replies: 36
Views: 1,361
Posted By johnsonm

Re: Choosing a cam

Lifters you have will work, as long as they are in good order. Roll smoothly, move through bores easily, no obvious damage.

Roll pushrods along a piece of glass, no wobble? No need to replace. ...
Forum: Carburetors
05-07-2007, 05:49 PM
Replies: 36
Views: 1,361
Posted By johnsonm

Re: Choosing a cam

That's a lot closer, make sure if you have a roller block you get the roller version of that cam. Some people will even say the 256 is a better choice for a street 305.
Forum: Carburetors
05-07-2007, 02:29 PM
Replies: 3
Views: 818
Posted By johnsonm

Anyone burned a zz4 chip?

Has anyone successfully burned their own zz4 prom using the BIN file found on Moates fileman site?

Should I post this on the DIY Prom board?

Thanks!
Forum: Carburetors
05-06-2007, 06:17 PM
Replies: 22
Views: 970
Posted By johnsonm

Re: Just Curious

Aftermarket distributor?

https://www.thirdgen.org/forums/tech-general-engine/21262-timing-gurus-w.html?highlight=setting+distributor+spark+curve
Forum: Carburetors
05-06-2007, 05:19 PM
Replies: 4
Views: 817
Posted By johnsonm

Re: QJET sputtering and chokeing

Stock feedback carb and distributor? Any ses codes? Have you checked timing and dwell? Did this problem start suddenly or has it always been like this? All wires and vacuum lines plugged into...
Forum: Exhaust
05-04-2007, 12:55 PM
Replies: 58
Views: 14,682
Posted By johnsonm

Re: Formula With Sidepipes

RegnittoFormula,

Yes, like everyone said, and like everyting else, it can look good if done right. You need to bring the old round fender corvette look to the table, with big fat tires, not...
Forum: Electronics
05-03-2007, 07:35 PM
Replies: 0
Views: 505
Posted By johnsonm

ZZ4 prom 24502456

Anybody know of a place that still sells these?

Thanks
Forum: Engine/Drivetrain/Suspension Wanted
05-03-2007, 07:29 PM
Replies: 1
Views: 904
Posted By johnsonm

zz4 prom 24502456 wanted

I am looking for the zz4 conversion prom chip 24502456. Would be shipped to 32693.

Anyone have a spare, or know where to get one?

Thanks!
Forum: Suspension and Chassis
05-02-2007, 01:58 PM
Replies: 8
Views: 729
Posted By johnsonm

Re: Posi or Limited-Slip

Welcome!

Lot of good folks here. Lots of people will tell you to search.

Posi is short for posi-trac, which was a GM branded name for the limited slip differentials used in 60's (?) era cars....
Forum: Suspension and Chassis
05-02-2007, 01:11 PM
Replies: 2
Views: 575
Posted By johnsonm

Decent performance, reasonable $ tire for 15" rim

I need new tires. I am stuck with a 15 inch rim at this time. Would like a decent performing street tire at and affordable rate. No auto cross, very little drag time, mostly just driving to work....
Forum: Carburetors
04-30-2007, 11:12 AM
Replies: 22
Views: 970
Posted By johnsonm

Re: Just Curious

A steady 18 inches of vacuum is generally considered pretty good. Other things will affect that though. Lumpy cams will have lower vacuum, mis adjusted valves will have vacuum issues (dips or...
Forum: Carburetors
04-23-2007, 11:12 AM
Replies: 19
Views: 913
Posted By johnsonm

Re: Please Help Me

If the carb has been tampered with before search for

"Setting rich and lean stops on a CC-Qjet... good tip!" by Damon

Will get you pretty close.

See also:
...
Forum: Carburetors
04-19-2007, 07:31 PM
Replies: 7
Views: 5,860
Posted By johnsonm

Re: Choke thermostat.

Does the choke thermostate get a signal from the engine temperature sensor, or will the bimetal coil heat and open the choke regardless of engine temp?

How do the engine / computer communicate...
Forum: Carburetors
04-18-2007, 10:25 AM
Replies: 23
Views: 1,923
Posted By johnsonm

Re: 1985 Quadrajet help

Make sure the flat 4 wire plug at the distributor is disconnected when checking the timing also.
Forum: Carburetors
04-17-2007, 09:18 AM
Replies: 23
Views: 1,923
Posted By johnsonm

Re: 1985 Quadrajet help

The car runs fine to half pressed (half throttle?) but go any more and the RPM's drop and the car doesn't want to pick up speed like it should?

Throttle position sensor?

Problem on the...
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