DesertLake
SILVER Star
Need to recheck my work in the morning but looks like I need 4 new shims and a bunch of swaps.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
I would hope that in his case it’s just wear and not “tuliping” of the valves. I wouldn’t think that there’s enough heat for that to happen on your gas engines. Now on my engine, this is a possibility. The way the fueling was set up when I got my truck, full kill, I was definitely hitting egts over 1300 in the cylinders.If you are down to zero clearance, i'd say you have some decent valve seat wear going on, either in the valve or in the head. Hopefully getting it shimmed back, you don't see too much more wear and it's not a valve head separating from the stem.
If you are down to zero clearance, i'd say you have some decent valve seat wear going on, either in the valve or in the head. Hopefully getting it shimmed back, you don't see too much more wear and it's not a valve head separating from the stem.
I got a few hours to work on the hot rod today. Started putting together the front axle. Swapped out the front brakes for the 93-97s, drive flanges from the FZJ also, and installed the RCV axle shafts. I had forgot that the shafts were rifle drilled.
View attachment 2676258
View attachment 2676259
View attachment 2676260
View attachment 2676261
View attachment 2676262
View attachment 2676263
View attachment 2676264
View attachment 2676265
View attachment 2676266
Yep! Pretty cool. I did put a full tube of grease through each one already.The zirc fitting so you can flush the birfs without taking them apart????
Update - valves are re-shimmed, and my compression test (different gauge from last time) shows 160 160 155 155 160 160. Some valves were off by a lot more than others so it bears watching, but in the end I think I'm looking at wear over 250k miles not the 30k since the rebuild. I am certain I never adjusted the valves before, but I think I remember planning to do it after the rebuild...and never got to it. 1 and 4 were definitely off the most. #6 clearance is now at the loose end of the tolerance range, but within spec, and I see in the old compression figures it was doing ok. So it was probably more like .08mm not the <.04mm I measured.I've not had time to work on anything! In fact this week is the first vacation time I've taken since October (I worked straight through Christmas and New Year's weeks) and I'm catching up on all those things that keep the house from collapsing or being repossessed.
In any case I'm starting to worry about the 1FZ I built 6 years ago. When cold cranking it seems like one cylinder may crank a little faster - which made me think about compression. I had my mechanic do a compression check, and he measured 130, 140, 150, 140, 150, 150. Hmm. Would I hear that 130 on #1 in how the starter cranks? I wish I had checked compression 6 years ago. I was hoping to replace the tires this winter (the MTRs are great fun everywhere except roads) and now I'm not sure what I want to do.
Update - valves are re-shimmed, and my compression test (different gauge from last time) shows 160 160 155 155 160 160. Some valves were off by a lot more than others so it bears watching, but in the end I think I'm looking at wear over 250k miles not the 30k since the rebuild. I am certain I never adjusted the valves before, but I think I remember planning to do it after the rebuild...and never got to it. 1 and 4 were definitely off the most. #6 clearance is now at the loose end of the tolerance range, but within spec, and I see in the old compression figures it was doing ok. So it was probably more like .08mm not the <.04mm I measured.
Good enough for now.
Depends on if I can get some time to test drive and all that. I am taking advantage of the free hazardous materials disposal coupon tomorrow morning, so tonight is all about loading the truck.You coming with us on Sat?
I have a double cv front shaft, and only a total of 114k miles on the truck, but I just found out that my front ujoint is bad. Picked up a new one from Driveline today. $28 for a US made one.Fan clutch wasn't it. Ryan and I took it for a drive. Vibration is tied to RPM and load. Very strong at the transfer case shifter. Will probably be investigating front 250kmile drive line next, though I suspect I had the bearings replaced at some point.
Is that Driveline & Gear Service of Reno Sparks, or Driveline Services in Carson?I have a double cv front shaft, and only a total of 114k miles on the truck, but I just found out that my front ujoint is bad. Picked up a new one from Driveline today. $28 for a US made one.
RenoIs that Driveline & Gear Service of Reno Sparks, or Driveline Services in Carson?