lookforjoe
True Classic
8/26/2014 EDIT: See THIS POST for summary of mods.
Finally got the cooling system all wrapped up, running nice & cool with the larger custom rad, shroud with dual fans and the new AC condenser. EDIT: Had to find alternate fans, the installed ones were crap
Then, on the way home today, I lost power on the highway -managed to coast it off the ramp, and into a parking lot. After cooling down a little, I was able to restart & get it the last 1/2 mile home. In that last half mile, the dipstick pushed out & sprayed a far bit of oil.
vid of blowby from dipstick
So, I pulled the plugs, which looked fine, and did a compression test:
#1: 175 #2: 55 #3: 125 #4: 175
Judging from the blowby & compression numbers, I presumed piston damage. So I figured might as well pull the head & see what's what.
#3 #2
left side of #2....
right side of #2
head bolts were new with head job - far left bolt - pretty corroded
So, I'm wondering what did it in. I did overheat it a couple of times over the past couple years - both times due to the roof catch hitting the bleed nipple on the rad - the last time (last year I think) it really cooked. I'm sure that didn't help matters.
I have a wideband, and there was no indication of a lean condition - but, if one injector failed, it wouldn't show up anyway.
The injectors were rebuilt when I did the head/cam a few years ago, so maybe 10K miles since. The connectors look a little iffy - I'll need to ohm out the harness & see if there is a continuity problem there.
Either way, I'll have to go with new injectors & rebuild the harness, I can't leave it as is.
SO, I need to rebuild this motor, a motor swap (Honda, etc) is not possible at this time, so I could use input on piston choices, etc.
EDIT: Maybe this is a good option: 1600 Stroker ....
Finally got the cooling system all wrapped up, running nice & cool with the larger custom rad, shroud with dual fans and the new AC condenser. EDIT: Had to find alternate fans, the installed ones were crap
Then, on the way home today, I lost power on the highway -managed to coast it off the ramp, and into a parking lot. After cooling down a little, I was able to restart & get it the last 1/2 mile home. In that last half mile, the dipstick pushed out & sprayed a far bit of oil.
vid of blowby from dipstick
So, I pulled the plugs, which looked fine, and did a compression test:
#1: 175 #2: 55 #3: 125 #4: 175
Judging from the blowby & compression numbers, I presumed piston damage. So I figured might as well pull the head & see what's what.
#3 #2
left side of #2....
right side of #2
head bolts were new with head job - far left bolt - pretty corroded
So, I'm wondering what did it in. I did overheat it a couple of times over the past couple years - both times due to the roof catch hitting the bleed nipple on the rad - the last time (last year I think) it really cooked. I'm sure that didn't help matters.
I have a wideband, and there was no indication of a lean condition - but, if one injector failed, it wouldn't show up anyway.
The injectors were rebuilt when I did the head/cam a few years ago, so maybe 10K miles since. The connectors look a little iffy - I'll need to ohm out the harness & see if there is a continuity problem there.
Either way, I'll have to go with new injectors & rebuild the harness, I can't leave it as is.
SO, I need to rebuild this motor, a motor swap (Honda, etc) is not possible at this time, so I could use input on piston choices, etc.
EDIT: Maybe this is a good option: 1600 Stroker ....
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