Sam Buchanan

Do you have a residual drain on the battery? If so it would be a good idea to eliminate it and if not there isn't any reason to disconnect the battery.

Joe, I don't know the "best" interval to use but I can tell you what I do. I usually change oil in the '48 P15 yearly (or when I get in the mood to do it) which is less than 2000 miles. The spin-on bypass filter gets changed every other oil change. I use a 10W30 oil. You will get a lot of opinions on your question, probably not much consensus. But considering the low quality of oil in use when these engines were daily drivers back in the day, and for which these engines were designed, we probably change oil much more frequently than is actually needed.

Connect the alternator to the wire that was originally on the old regulator BAT terminal. This will keep your ammeter and horn functional. That is all that is needed.

Hopefully you can successfully repair your driveshaft. In case that isn't feasible, below is a post from 2020 about the parts needed to build a new driveshaft using modern components. This is the route I will take if ever faced with a failure of the original u-joints. =============================================== Posted December 17, 2020 (edited) Found it....from this thread: https://p15-d24.com/topic/54484-whats-the-best-driveshaft-repair/?tab=comments#comment-582634 Scroll down several post to where I broke out the components needed. ================================ Just for grins I ran searches for the parts listed in the invoice above. They are readily available and listed below are some (not necessarily the least expensive) of the links I found (in same order as listed on invoice): https://www.northerndrivetrain.com/product/SPI-2-2-349.html https://www.northerndrivetrain.com/product/SPI-5-1310X.html https://www.summitracing.com/parts/sdh-2-3-8001kx?seid=srese1&gclid=EAIaIQobChMI0Jnjv8qK4wIVkp-fCh34jQYOEAQYASABEgIxHvD_BwE https://www.northerndrivetrain.com/product/SPI-2-28-437.html https://www.summitracing.com/parts/sdh-2-40-1521

Krylon Satin Black.

Fuse should be sized for the wire, I have 30a or 40a, can't recall which, I'll try to check. Have 10g from alternator to the car's harness.

Wiring instructions come with the alternator but it is a simple hookup. Discard (or tape off) the generator field and armature wires, they aren't used. The single wire from the alternator connects to the wire on the old regulator BAT terminal. You can either use the regulator as a terminal or discard the regulator and connect the alternator and BAT wires together. I tossed the regulator, added a fuse in that line to protect against the remote possibility of a short to ground in the alternator and connected directly to the car's harness. The red wire is coming from the alternator and the other fuse wire connects to the harness wire that was previously on the old regulator BAT terminal.

Definitely optical convulsion, the belt tracks perfectly.

Yes, those are indeed alternators, I was just trying to make a light-hearted prod toward what will be your ultimate solution. You can either bypass the regulator or throw it toward the nearest trash can, the alternator is internally regulated and only requires one wire to connect it to the car. I have an alternator from the vendor I linked and it has been flawless for five years. I don't have a resource for rebuilding your generator, maybe someone can offer one if you decide to take that path.

I need some education, I'm probably overlooking something obvious. I have seen numerous admonitions to install the driveshaft in the same alignment as it was removed but I can't figure out why this is necessary. The shaft is balanced as a discrete unit on a test bench, not with the entire driveline intact. When we install a new driveshaft there are no witness marks to line up. I understand there are definite ways to orient the universal joints when building a new shaft to insure proper phasing but why bother with this when putting the old shaft back in the car? I've had the driveshaft out of my car several times (trans removal, servicing u-joints) and have never bothered with witness marks. What am I overlooking?

Looks like we are all in agreement......for once. 😄

This is where I got mine. 😁 https://www.ebay.com/str/HowardEnt?_trksid=p2047675.l2563

Standard application is install the seal spring toward the oil. In this case the inner seal spring should go toward the more fluid lubricant, the gear oil.

I haven’t seen any mention of any lights other than these 7” round reflectors. These were available as an upgrade for the Land Cruisers.

Or put a pan under the car at night....... 😆

The spring in a seal goes toward the oil/grease.

Some clarification is in order in regard to low beam pattern of the Toyota lights we have been discussing. The quoted statement is not born out by my comparison of the Toyota and a DOT sealed beam and has the comparison backwards. Please look again at the photo I posted earlier comparing a Sylvania DOT sealed beam bulb on the left and Toyota (Koito) H4 on the right. The Toyota light definitely is throwing more light up the right side of the road which would make signs more readable. At the same time there is sharp pattern cutoff in the center and to the left which prevents blinding oncoming motorists. All this while putting a lot of light on the pavement in front and to the left of our car. This is a similar pattern to what modern DOT projection headlights provide. The poor ol' DOT sealed beam just throws out a fuzzy circular yellowish pattern that does little for illuminating the side of the road and also scatters more light in the direction of oncoming motorist. In other words......the DOT bulb is bringing a dull knife to a gunfight..... I overlooked taking a photo of high-beam comparison because we aren't as concerned about on-coming traffic on high-beam. But the difference between the two bulbs is significant with the Toyota lights throwing out an impressive amount of useful and safe illumination. Keep in mind these are 6v halogen bulbs, the 12v bulbs are even more impressive. Photos taken with 6v alternator idling, approximately 7v delivered to the bulbs via fused relays. https://www.amazon.com/dp/B00GNTZ9SA?ref=ppx_yo2ov_dt_b_fed_asin_title

Learning how to do internet searches can be the most valuable tool in the garage when it comes to maintaining our old cars.

No problem with 12v, the light kit comes with 12v bulbs and relays. This is a standard size reflector for cars with 7" 6012 sealed beams. As I pointed out the shape of the lens is different from the sealed beam but they fit in my '48 P15. I did open up the hole in the back of the shell a little so the very nice rubber boots will fit properly.

That was quite the sermon. Thank you for your interest in my morality. I guess I need to see if my homebrew seatbelts meet the letter of the law, the replacement glass doesn't have a DOT stamp and I'm quite sure the LED taillights aren't DOT approved. Most likely the aftermarket gas tank isn't either, or.....well....we get the point. By the way, Alabama has no vehicle inspections and it seems E-code headlights are legal in some states. I would never install lights on my car that are a hazard to other drivers, see the photos I posted in an earlier post showing the superior pattern to DOT sealed beams.

I'm not missing any points........

There is a very simple solution for those who have concerns about improved and safer lighting. Don't install it.

This discussion prompted me to do a bit of internet digging. Bottom line, the odds of failing a state inspection due to E-code headlights, especially on a vintage vehicle, is practically nil. E-code lights are superior to DOT light in all respects and hybrid E-DOT lights are on many US production vehicles. For those who want E-code H4 lights but want to retain the familiar rounded shape, here is an option: https://www.busdepot.com/nl910ch4 But this vendor clearly states the Koito H4 lights that we are discussing are superior.

It is my understanding these Koito lights are not DOT approved, think I saw notation to that effect in some of the Toyota verbage. However......my experience with the lights when installed on the TR6 and VW demonstrate superior light pattern to what is common with DOT sealed beams. The pattern is designed to throw more light to the right side of the road and minimize light going to oncoming motorists. This is very different from the incredibly horrible LED conversions that often blind us when meeting a bro with his blue-lighted Carolina-lifted truck. I find the beam pattern to be very similar to what is found on late model vehicles with their highly refined designs. This is an area where the Europeans were many years ahead of the USA, our DOT was late to the party on headlight design. I like the idea of having modern, safe lighting performance on my old ride.

UPDATE; Installation of 6v H4 bulbs in the ridiculously cheap Toyota headlights In posts earlier in this thread I detailed installation of 6v headlight relays in my '48 P15. The Toyota headlight upgrade kit arrived and I swapped out the included 12v H4 bulbs for 6v H4 bulbs I sourced on Amazon. I installed the right headlight so comparison can be made to the 6006 halogen sealed beam currently in the car. Installation was straightforward but some may not like how the new lens protrudes from the chrome trim ring. The lenses are "European" style and look great on my TR6 and '69 Beetle but are more obvious on the Plymouth. I think I will like the better lighting enough to tolerate the new look(new light on left side of photo). I haven't fine-tuned aiming but here are some side-by-side comparisons, new light on right side of photos. The modern beam cutoff pattern is very evident on low beam when compared to the old "round" pattern. It throws more light on the road in front of the car and also up and to the right for road signs while keeping the beam away from oncoming traffic. It actually extends coverage low and to the left of the original sealed beam. The H4 bulb is higher wattage (55w/60w) than the old 6006, this photo gives some indication of the greater output. The car is driven at night so this is a good upgrade at a very attractive price. I'll have a more complete impression after the other new reflector is installed and aiming is refined.