Rudok

Just an FYI, After I pulled the engine on my 86 720, I decided to waist some money on expensive head bolts. Come to find out there is no kit available that specifically mentions the Z24 (or at least none that I could find). I decided to pull the trigger and just buy the kit from ARP for the KA24E and guess what... it worked perfectly. ARP 202-4307 fits the Z24 just fine! If this is already a known fact, my bad for saying it again.... Just was glad to have a win!

Ok ill just leave them alone then, I only bring that up because I'm not really able to get over 60 - 65 mph.... Probably should look at the carb itself and make sure that there is nothing wrong with the vacuum operated secondary. I did a flush on the rad when i first got it but I will do the thermostat next and just do another flush with the cooling system in the process. I would never have thought about the lower radiator hose collapsing, I will check that out along with the fan clutch when I get a chance. The coolant lever is GTG though, so that's a win.

very well, it has been purchased. got it for $40 on Ebay. Ill check out the fan clutch next. I suppose my brain just immediately goes to the carb running a little lean. I would like too experiment with different jets, any suggestions on where to get a handful of jets to play with? The ones currently installed are 170 and 94

Ooh, is that the barrel that sticks out the side of the carb with 6 screws on it? Thats about the size of a large pill bottle? I think I know what your talking about, it does have some wires going to it. I would like to do some experimenting with the jets on this carb though, I can say that I have noticed the engine temp is slightly higher than normal when I'm doing 65 on the freeway (and that's as fast as she'll go right now anyways). Might be running a tad lean, and I don't want to play those games when it gets hot out here in AZ. I'm thinking that I can get a few jets and start experimenting. It does great around town, but it would be nice to sustain 65 mph what a slight headwind is coming my way, or when I'm going up a little bunny hill in the middle of the desert.....

very well, I suppose that I should just succumb to peer pressure on this one.

I did end up removing all the emissions stuff all over the place and I will have to say that this thing runs much better. I fabricated my own EGR blockoff plate on the intake with a new gasket and a piece of scrap steel laying around. I cut the egr tube from the exhaust manifold and folded it over on itself to seal it off, worked like a charm. Removed all vacuum lines except the one going to the distributor and the Air conditioning idle "thing" on the back of the carb near the firewall that pulls from the brake booster. I am still a little stumped about how exactly the O2 sensor does anything on this carb. Can someone school me on what is controlled on the carb? Or even under what circumstances it is utilized... Or should I just remove it also and what I would need to do in addition to just removing it. I have read somewhere on this forum that some people have installed a wideband O2 sensor to aid in tuning the idle A/F ratio and proper jetting.

I'll check out that forum and see what I can find for sure. Thanks

I took a look on EBAY and I don't think that I am willing to spend those types of prices just yet, but I will keep an eye out for sure.

sooooooo.... The carb went back in after I took a full day disassembling, taking pictures, and reassembling. I will have to say that the stock carb on this is quite intricate compared to what I remember the weber being..... All said and done, it runs, but like garbage...... I think I need to get my hands on a service manual that would tell me what I need to do instead of using my level of common sense (which apparently is not adequate for this job). Any recommendations on where to get my hands on a Factory Service Manual?

I got the Carb out last night and began to disassemble laying everything out in order and taking pictures along the way. I took leave for today and tomorrow so I could have a long weekend to get this and a few other projects done. So I am expecting to have the carb put back together and reinstalled by this weekend. I'll upload some pictures once I figure out how to do that on this forum.

I didn't realize that about todays oils and will definitely make the change to diesel oil on the next oil change. Anything to keep this beauty on the road. I do stay away from Fram for sure as I have cut open filters in the past and was not impressed by their lack of quality control. I will put the Differential and transfer case fluids as well as the transmission fluid on the list of must do's. I did the fuel filter tonight, I sure do love how easy things are to work on with these trucks. I adjusted the valve lash tonight also, intake and exhaust at 30 when it was cold. I found that they were around 25 on most and a few were around 35/36 before I corrected them. The stickers are even still there under the hood that tell you what to adjust them too. This truck even still has the under hood heat shield and the wheel well water/debris deflector material intact. I do need to take the carb off and get my hands on a rebuild kit, as it struggles past just under half throttle (it will only get up to about 48mph and is not happy trying to get any faster). Could be secondary jet is clogged, but who knows until I get in there and take it all apart. I found that Oreille's sells the rebuild kit for about $40 and its actually in stock too. On my last 720, I put a Webber 38 on it (should have gone with the smaller one, but I was young... give me a break). I will be staying with the OEM carb for sure. This carb sure does have a bunch of stuff on it that I don't remember being on the Webber... sort of scary, not going to lie... The truck is the California version and has an O2 sensor on the exhaust manifold, so I'm sure there's all kinds of gadgets and gizmos on the carb that make it good enough for the state just to my west. Wish me luck

Good evening members, I have just re-entered the family of 720's! I got my first 720 (1985) back when I entered the Marine Corps in 2004 when I got stationed in Yuma, AZ. I kept it for 3 duty stations driving it across the country on 2 different occasions. I ended up gifting it to one of my family members whom did not take nearly as good care of it as I did and it went the way of the junk yard. Fast forward to my last year in the military and my wife surprises me with this pristine condition all original 1986 with 106,000 miles on it (still has the stock carb). I decided to join this forum so I can gain as much knowledge and respect for this machine that I probably didn't have for these trucks back when I had my first one. I would like to keep it in stock configuration just because this thing is in such good shape. What I have already done to bring it back up to snuff: -Drained and flushed coolant with distilled water (pulled plug on back of block each time throughout the process) -Loosened the head bolts and retorqued to 60 ft/lbs one at a time -Replaced all 8 plugs with oem -repaired the heat damaged coolant overflow bottle (had a big crack on the inside of it) -replaced the radiator cap -replaced air filter -Changed oil and filter -purchased replacement PCV but will replace once I do a carb rebuild due to location -topped off the r-134a (and the ac even works, it was converted to 134 and the compressor replaced already) I will end up replacing the reciever dryer this winter. What else should I be looking to do to keep this beauty going? Very excited to be back in the seat!