Zilla's initial autopsy:
Thread Starter
Junior Member
Posts like a Ricer Type-R
Joined: Aug 2002
Posts: 11
Likes: 13
First of all, remind me to Kill sonoma_zr2 when I see him in MN in about 2 weeks for hiding my air ratchet in the toolbox, instead of on the shelf with the rest of the air tools. 
Long story short, after carefully inspecting all 6 cylinders (see page 3 for the borescope images of #1), I found only some POSSIBLE minor damage to the #5, and all the 'loose' material from #1 has been conveniently melted, fused, and deposited in the dished center of the piston.
Consider that I STILL have acceptable compression on the #1 per the factory service manual, I decided to cut my losses temporarily while I obtain a replacement bottom end in better shape (and this bottom end to be rebuilt at my leisure at a later date).
So what I did was install 5 original plugs, a new plug in #6, reconnected my injectors, and swapped out the large 2.3" pulley for a rather monstrous 2.5". I just couldn't bring myself to put a 2.55" on there. I have a reputation to think about.
Hang your head in shame, Bo. We have a 2.5" pulley on the Zilla.
The 2.5" pulley requires me to remove my extra idler. That'* ok, though, cuz we've been wearing it out. I think it'* 2.95" in diameter now, and needs to be replaced with a steel pulley next round.
Car is purring like a kitten. I still need to boost up my octane a bit. By my calculations, the 16 year old blonde chick that dumped 87 octane in my car left me with about 88.4 octane (I had about 3 gallons of 92 in the tank already). I just happen to have a gallon of toluene handy. My net octane in about 5 minutes will be 91.26 until I fill up again with 92.
I'll drive easy for the next 5-10 miles with nothing over 3000 rpm'*. After the higher octane hits the rail, I can drive like those normal people we've heard about. I had no KR on a 2.2" pulley with the ported heads and rockers, so I should be safe from further damage running a 2.5" pulley once the octane is bumped up a bit.
Some pics of the afternoon'* work:
Let'* see someone ELSE try to kill a moth on the TOP of the hood. This was my last kill other than my #1 piston:
Get off! It'* not dead yet!
2.3" pulley and magic Zilla extra idler removed:
Absolutely monstrous 2.5" pulley installed:
Looks good from a distance:
Here'* an idea of what the belt path looks like now. Think about a 3" idler pulley being mounted to the hole in the bracket beneath the ICM. That'* what I normally run:
Further embarassment. Look at the DUST!
A little fuel pressure anyone? I have some to spare now:
Time to back that fuel pressure off a bit for the 2.5" pulley. And it'll stay there. The next injectors will be a bit bigger when they get here.
I'm going out to dump some Toluene in the tank, and Bo and I are going for a leisurely drive to run that higher octane up to the rail so tomorrow morning'* drive to work doesn't have any surprises.
Video of the startup:
Long story short, after carefully inspecting all 6 cylinders (see page 3 for the borescope images of #1), I found only some POSSIBLE minor damage to the #5, and all the 'loose' material from #1 has been conveniently melted, fused, and deposited in the dished center of the piston.
Consider that I STILL have acceptable compression on the #1 per the factory service manual, I decided to cut my losses temporarily while I obtain a replacement bottom end in better shape (and this bottom end to be rebuilt at my leisure at a later date).
So what I did was install 5 original plugs, a new plug in #6, reconnected my injectors, and swapped out the large 2.3" pulley for a rather monstrous 2.5". I just couldn't bring myself to put a 2.55" on there. I have a reputation to think about.
Hang your head in shame, Bo. We have a 2.5" pulley on the Zilla.
The 2.5" pulley requires me to remove my extra idler. That'* ok, though, cuz we've been wearing it out. I think it'* 2.95" in diameter now, and needs to be replaced with a steel pulley next round.
Car is purring like a kitten. I still need to boost up my octane a bit. By my calculations, the 16 year old blonde chick that dumped 87 octane in my car left me with about 88.4 octane (I had about 3 gallons of 92 in the tank already). I just happen to have a gallon of toluene handy. My net octane in about 5 minutes will be 91.26 until I fill up again with 92.
I'll drive easy for the next 5-10 miles with nothing over 3000 rpm'*. After the higher octane hits the rail, I can drive like those normal people we've heard about. I had no KR on a 2.2" pulley with the ported heads and rockers, so I should be safe from further damage running a 2.5" pulley once the octane is bumped up a bit.
Some pics of the afternoon'* work:
Let'* see someone ELSE try to kill a moth on the TOP of the hood. This was my last kill other than my #1 piston:
Get off! It'* not dead yet!
2.3" pulley and magic Zilla extra idler removed:
Absolutely monstrous 2.5" pulley installed:
Looks good from a distance:
Here'* an idea of what the belt path looks like now. Think about a 3" idler pulley being mounted to the hole in the bracket beneath the ICM. That'* what I normally run:
Further embarassment. Look at the DUST!
A little fuel pressure anyone? I have some to spare now:
Time to back that fuel pressure off a bit for the 2.5" pulley. And it'll stay there. The next injectors will be a bit bigger when they get here.
I'm going out to dump some Toluene in the tank, and Bo and I are going for a leisurely drive to run that higher octane up to the rail so tomorrow morning'* drive to work doesn't have any surprises.
Video of the startup:
Thread Starter
Junior Member
Posts like a Ricer Type-R
Joined: Aug 2002
Posts: 11
Likes: 13
Thanks, Olds.
10.1 miles on the ticker. Should be in the 'octane safe' zone. Car is running like a champ, and is now off the injured reserve list, and back at least in a daily driver role for the time being.
10.1 miles on the ticker. Should be in the 'octane safe' zone. Car is running like a champ, and is now off the injured reserve list, and back at least in a daily driver role for the time being.
