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So... Was away from home and realized that the goofy plastic air line connector to one of my Monroe air shocks had blown off... Seemed like a bad plan to drive home without any air in them so a solution needed to happen. After much searching about I realized that a low side vehicle 12 to 12a...

Hey guys, doing a bunch of work on my 91 l300 and I'm really curious why my diff isn't angled straight towards the transmission. Is it normal to have it angled up like this? Thanks in advance for the input!

I'm doing the "level 2 front brake upgrade" from stock, as detailed by the admins and helpful members. Thanks everyone! Thought I'd document my progress, part numbers, etc... as I'm in Victoria BC, and things might be a bit different for me than for people in other parts of the world. I'm...

Hi everyone, I've been looking into my injection pump and I'm really curious if anyone has ever played around with being able to control the case pressure. My understanding is that the case pressure controls the pump timing advance. Apparently there's a solenoid on one of the 4m40 pumps...

Just had a thought about timing belts on the earlier 4d56 with the square toothed timing belt. If I'm understanding correctly, they haven't actually manufactured that belt for a number of years, as they went to the round toothed belt. My understanding is that a timing belt interval is...

Hello everyone, Looking into my rear brakes. It appears that the rear brake adjusters are hard to find. I'm curious if anyone has come across a source for them. I believe I'm looking for MB500831 and MB500830 Thanks in advance!

I'm curious if anyone has tinted their own windows. It's looks like the rear windows might be easy enough to remove and take inside the house to do away from dust (except the rear door). Is this a horrible idea?

Hi everyone, Looks like I missed this step. Better late then never, eh? I'm Kyle, live in Victoria, BC, Canada and have a 1991 L300 white high roof auto with a large roof rack and veggie oil system. So far I'm loving it and it's keeping me busy working on it. The members here have been very...

Hi everyone. I'm curious if anyone happens to know the specs on the 4m40 over pressure valve. I have a 4d56, my brother has a 4m40. He's saying his over pressure valve opens around 15psi or so. Mine opens at around 11. Apparently the stock 4d56 opens at 12 ish. I'm curious to know as I'm...

Hi everyone. 1991 l300 4d56 I'm going to go a compression test in the next few days and I'm wondering how you tell when the engine is in the correct temperature range. Is it basically the standard temperature if I let it heat up by idling? Or, could it be that a "new" thermostat should...

Hi everyone, 1991 Delica L300. I have some leaky injectors. Thinking I'll pull them all, have them tested, then reinstall. Does it matter where I get the washers and for what version of 4d56? Thanks! Kyle

Hello, Curious if it's still possible to purchase a new d4bf. Anyone figured this out recently?

Hello, My understanding is that home made biodiesel tends to eat typical diesel fuel lines and pump seals. I'm curious if anyone's come across a pump rebuild kit for the 4d56 that includes seals that are compatible with home made biodiesel.

Hi everyone. I have a 1991 L300 with a 4d56 and I'm looking to turn up the boost a little. I have a boost gauge and a manual controller. Routed the turbo wastegate through the boost controller. It looks like boost peaks at 11psi and won't go any higher. I'm guessing it's the over pressure...

So, I had a thought... Supposedly the 4m40 injectors have a higher braking pressure than the 4d56 injectors. Meaning... They would activate slightly after the 4d56 injectors. Effectively retarding the timing sightly. What I'm curious about though is that with the higher injection pressure...

Hi everyone! This is my first post since picking up my 91 Delica L300 a few weeks ago. I've read about people disabling the balance shafts by removing the belt as it seems to not make a huge difference and removes one point if failure in the motor. My question is, should I set the balance...