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Search found 27 matches

by moroza
Tue Jul 16, 2019 3:40 am
Forum: 240-300 "Big Block" Six Performance
Topic: Knocking noise; seems different from others
Replies: 8
Views: 911

Re: Knocking noise; seems different from others

Tested further with different ignition timing settings. Now my ears have trained to two distinct noises: 1. a diesel-like higher-pitched rattle that went away after I retarded base timing a hair, and 2. a lower-pitched mechanical rattle from engine or trans internals, or possibly the clutch. The tri...
by moroza
Thu Jul 11, 2019 1:17 am
Forum: 240-300 "Big Block" Six Performance
Topic: Knocking noise; seems different from others
Replies: 8
Views: 911

Re: Knocking noise; seems different from others

I only tested it briefly, but it appears that most of the noise is the vacuum advance. I connected the hose from the distributor to a vacuum gauge, which read zero with closed throttle, quick jump at the slightest throttle angle, decrease with further throttle angle, and increase with RPM - the same...
by moroza
Sun Mar 24, 2019 3:31 am
Forum: 240-300 "Big Block" Six Performance
Topic: Dealing with oil temperature
Replies: 11
Views: 507

Re: Dealing with oil temperature

Use a Trans-dapt 1313 sandwich adapter, or an adapter from a ford 1ton truck with a 460. Yes, thank you! That truck is how old? It's lasted all that time without an oil cooler.... Truck used to be a plumber's van that rarely went on the highway. Now it's a motorhome. Don't worry about monitoring oi...
by moroza
Wed Mar 20, 2019 12:54 am
Forum: 240-300 "Big Block" Six Performance
Topic: Dealing with oil temperature
Replies: 11
Views: 507

Dealing with oil temperature

My 300 is tasked with moving something like 7500lb empty, screaming at redline doing 60mph because of short gearing, and I'm concerned about oil temperature. I'm scheming this: - remote oil filter kit (like a Hayden 291 for ~$42 shipped) - temp sensor inline between the send from engine and filter -...
by moroza
Sun Feb 17, 2019 10:17 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Knocking noise; seems different from others
Replies: 8
Views: 911

Knocking noise; seems different from others

My 300 six is running pretty well since new lifters. Oilpressure has gone up too, though I'm also running heavier oil than before (Shell Rotella 15W40) - at least 19psi hot idle, 25-40 driving around. However, there's a knocking sound that doesn't quite match any I've read about. It's a medium-light...
by moroza
Fri Feb 15, 2019 10:16 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How to inspect lifters?
Replies: 18
Views: 1275

Re: How to inspect lifters?

Problem solved. It was the lifters. The new ones had a much tighter fit between the body and the plunger, though not the body and the block. They were also dead flat while the old were slightly concave. The metering disks were a different type than the originals, but the old ones were clearly worn. ...
by moroza
Thu Jan 10, 2019 12:45 am
Forum: 240-300 "Big Block" Six Performance
Topic: How to inspect lifters?
Replies: 18
Views: 1275

Re: How to inspect lifters?

No I would say that the theory of the bad "metering disk" isn't very likely. Because of when you tested them and it took you some good effort to recollapse the lifters piston. Are you sure we're talking about the same thing? The check valve that keeps the lifter from collapsing is at the ...
by moroza
Tue Jan 08, 2019 5:48 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How to inspect lifters?
Replies: 18
Views: 1275

Re: How to inspect lifters?

I'll try 10W40 or straight 30, but am afraid to try much heavier oil because I already lost a distributor drive gear pin, and read that something like 20W50 may break it again. I'm using a standard-volume Melling M74 pump. I Keep coming back to that there is likely sludge / crude or something else t...
by moroza
Mon Jan 07, 2019 4:26 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How to inspect lifters?
Replies: 18
Views: 1275

Re: How to inspect lifters?

From your description of the condistion of all these parts I am guessing this is a high mileage engine that was poorly cared for during its lifetime. No doubt about that. Dose your engine have good oil Pressure right now? Are you sure there is adequate oiling in the lifter bores? My eyes show all 1...
by moroza
Fri Jan 04, 2019 7:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How to inspect lifters?
Replies: 18
Views: 1275

Re: How to inspect lifters?

I cleaned up all the lifters and reinstalled. I was able to get oil oozing out of at least some lifter cups just with hand-cranking the oilpump. Reassembled rockers (carefully to zero lash, then one full turn, then jamnut because all but one stud nuts spun freely) and pushrods, ran the engine with v...
by moroza
Tue Jan 01, 2019 11:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How to inspect lifters?
Replies: 18
Views: 1275

Re: How to inspect lifters?

So if you can compress any of your lifters that haven't been taken apart yet then the check isn't working (this would be a rare occurrence) or the lifter isn't getting the oil pressure supply from its lifter bore. To further test out the lifter you can use a pump type oil can to put oil into the li...
by moroza
Tue Jan 01, 2019 3:43 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How to inspect lifters?
Replies: 18
Views: 1275

Re: How to inspect lifters?

"4. Your call on the lifters if they would be good enough to reuse. But I don't have the experience to make that call... Hence this whole thread. I'm disinclined to blindly replace them because 1. money's tight (I guess not $32 tight), 2. time is tight; I'm being nagged to move this van sooner...
by moroza
Sat Dec 29, 2018 3:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How to inspect lifters?
Replies: 18
Views: 1275

Re: How to inspect lifters?

Definitely replacing all the rockers and their fulcrums (fulcra?), as they're all worn at the valve stems and some of the balls are scored. Possibly replacing some pushrods. Of four pushrods, none are bent or obviously damaged, but one is ~1mm shorter and with a less pointy tip. Is that grounds for ...
by moroza
Fri Dec 28, 2018 6:13 pm
Forum: 240-300 "Big Block" Six Performance
Topic: How to inspect lifters?
Replies: 18
Views: 1275

How to inspect lifters?

Found lots of threads about lifters in general, how to replace them, and how to adjust valves, but surprisingly can't find info on how to determine if they're bad or not. The only test procedure I can find is Ford's, which calls for a special tool and special oil. I've got two problems: 1. A lot of ...
by moroza
Mon Dec 03, 2018 10:00 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Log intake manifold lean cylinders
Replies: 8
Views: 705

Re: Log intake manifold lean cylinders

not specific to the question but possibly germain, is the cylinder temp variations 1-6, the fairly restrictive radiator from factory, and no oil cooler will often create excessive heat in 6 and excessive cool in 1. I battled this on 2 trucks b4 it became obvious to me where the solution lay My 300 ...
by moroza
Sun Dec 02, 2018 5:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Oilpump and distributor questions
Replies: 10
Views: 689

Re: Oilpump and distributor questions

What is the engines running oil pressure? (Warmed up) I only drove it very briefly warmed-up, before the distributor gear pin broke, but pressure on a mechanical Bosch gauge says ~20psi when cruising warmed-up at ~1500rpm (guess because I don't have a tach), 40-50psi cold high idle depending on how...
by moroza
Sun Dec 02, 2018 3:44 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Oilpump and distributor questions
Replies: 10
Views: 689

Re: Oilpump and distributor questions

That’s funny stuff... That poor old engine has seen its better days I’d look at the pushrods (make sure the hole is open all the way though and the the end isn’t burned and melted closed) and the lifters next. Probably all the rockers are tightened right down to get rid of noise. Lifters bottomed o...
by moroza
Sun Dec 02, 2018 3:32 am
Forum: 240-300 "Big Block" Six Performance
Topic: Oilpump and distributor questions
Replies: 10
Views: 689

Re: Oilpump and distributor questions

I’ll give it a shot. I’m sure the 300 experts will have more to say. 2. Should load up a hand drill pretty good, more force required to hang onto the drill as you increase its speed.. How much oil in the pan? 3. What are you priming with, a long hex priming tool? The distributor gear gets oiled by ...
by moroza
Sat Dec 01, 2018 9:14 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Oilpump and distributor questions
Replies: 10
Views: 689

Oilpump and distributor questions

Over on FTE and elsewhere, I've run into suggestions to drill a hole in the block near the distributor drive gear to improve its lubrication. I can only find clear instructions ( a picture ) to do this on a V8; people reference doing this on a 300 but I suspect they're just copy-pasting V8-specific ...
by moroza
Sat Oct 27, 2018 6:52 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Low-resistance wires with Duraspark?
Replies: 4
Views: 842

Re: Low-resistance wires with Duraspark?

Radio? :lol: What radio? have to wear earplugs while driving this beast.

The module may be shielded but the three wires it uses to talk to the dizzy are not, and they're right next to (just about touching) the cap.
by moroza
Fri Oct 26, 2018 9:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Low-resistance wires with Duraspark?
Replies: 4
Views: 842

Low-resistance wires with Duraspark?

I'm halfway through a Duraspark conversion on a 300 six, and discovered that my brand new BWD Select (cheap generic aftermarket) plug wires, never used and not even installed yet, have very low resistance - about 1kohm/ft, compared to 10-15x that on the original wires. I read that low-resistance wir...
by moroza
Sat Oct 13, 2018 5:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: Whos doing best fuel economy over power???
Replies: 17
Views: 1570

Re: Whos doing best fuel economy over power???

I've been reading this thread with a lot of interest. Thank you! My 73 P-400 gets ~10mpg in mostly-highway use. For how often that happens, it's not a big problem in the bigger picture, but improvement's welcome. I know it needs more gears - currently 4.56 with a non-OD NP435. Are there 5-speeds (or...
by moroza
Sat Oct 06, 2018 4:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: The fine points of pointless (Duraspark) distributors
Replies: 15
Views: 1326

Re: The fine points of pointless (Duraspark) distributors

I have a lead on what looks like a good deal for a distributor, but it's 1975 (D5TE-12127-FA). That means it's DS-1, not -2, right? I know the electronics are different, but how about within the dizzy itself; any differences between a DS1 dizzy and a DS2?
by moroza
Tue Oct 02, 2018 1:56 pm
Forum: 240-300 "Big Block" Six Performance
Topic: The fine points of pointless (Duraspark) distributors
Replies: 15
Views: 1326

Re: The fine points of pointless (Duraspark) distributors

I've read that the GM HEI doesn't retard ignition on startup, like the stock Ford module does? Other things being equal, I'd prefer to keep that feature. Is HEI better in some other way? The two above linked DuraSpark II distributors are basically the same, the advance curves (total amount of advanc...
by moroza
Tue Oct 02, 2018 3:33 am
Forum: 240-300 "Big Block" Six Performance
Topic: The fine points of pointless (Duraspark) distributors
Replies: 15
Views: 1326

Re: The fine points of pointless (Duraspark) distributors

I'm on good terms with my soldering kit and have no questions about wiring. I figure if I can wire up a BMW traction control computer (~85 wires), I can handle this. My main question is whether there's any difference between the two distributors I linked to, or any other variations I should know abo...
by moroza
Mon Oct 01, 2018 12:44 am
Forum: 240-300 "Big Block" Six Performance
Topic: The fine points of pointless (Duraspark) distributors
Replies: 15
Views: 1326

The fine points of pointless (Duraspark) distributors

'73 P400, Holley 1940 carb, no emissions whatsoever, bone stock HD motor in a motorhome, not a hotrod. My point-n-condenser distributor is worn and recently lost its drive gear pin. I'd like to upgrade, not just replace it. I like what I read on this site's excellent Tech section about Duraspark, bu...
by moroza
Mon Oct 01, 2018 12:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: Broken dizzy pin. Options?
Replies: 2
Views: 418

Broken dizzy pin. Options?

Three afternoons of fiddling with the timing, checking for exhaust blockage, scratching my head and my backside, reading tea leaves and praying to the moon... and I figured out why my 300 died and then mysteriously came to life briefly before dying again: broken distributor gear pin. I understand th...