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Post by possumpieces on Jul 11, 2012 17:55:27 GMT -5
I can't wait to see the video.
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Post by poorboy1 on Aug 1, 2012 22:38:36 GMT -5
This story starts off on the last trail ride and is a bit long winded but it is what it is. I fried an ignition module or coil, anyways it just died when trying to jump start a rig. I popped the cap off and it was full of water from TTC and lots of rust. I swapped in the entire distributor from the tow rig and wheeled the rest of the trip. Afterward I toss the dizzy back in the trail rig and head home.
So after the electrical issues on the trail when I got home I slapped an old distributor and wires in the truck to get it ready for a car show at my work. I tossed it in to what I thought was close to how it was timed before. I also damaged some spark plug wires and tossed a couple old ones on. It fired right up and I thought it was good to go. I figured I could time it by ear when I get it out on the sand next time I am out. I get it to work and unload it and all seams fine. I take off down the road to our other shop for the show and it is running good. I step on it to open it up and it backfires big time. I drive the rest of the way half throttle and it runs fine. I figure the timing is still of and plan to mess with it at home. After the show I drive it back to our shop about 1/4 mile away. It drives fine but I dont floor it.
I pull up to our gate and it dies. I try to refire and nothing. I cycle the key and it fires. I drive about 50' and it dies again. I repeat this about 5 times before getting it on the trailer. Now I figure I really fawked up the mixer. I get home and take the top off the mixer and the diaphram seams ok, so wtf. I put it back together and fire it up and idles fine. Rev it up a couple times and it feels a bit rough. I take a temp gun and shoot all the cylinders and find 4 and 6 over 100 deg cooler than the rest. Ok so time to quit screwing around with old ignition parts and start over. I picked up a new msd distributor, wires, and plugs. I figure while I am at it I will try to dial in the timing correctly with a recurve kit and vacuum advance limiter.
Fast forward a couple days and I finally get around to pulling the old parts and ready the enginge for the new stuff. Upon bringing up #1 to TDC I shined a light in the spark plug hole and decide to look in all of them. I notice a hole in the number 3 piston (not what I need 2 days before SB8) I am not sure the hole goes all the way thru it kinda looks like a 1/4" wide crater. I figure I might as well do a compression check on all the cylinders. #2,4,6, and 8 test out between 110 to 125. #1 is 120psi but #3 is 60psi #5 is 40psi and #7 is 90psi. WTF? Appearantly I really messed this up in the short run it had at work? No time or ambition to try swapping motors I figure I would pull the valve cover and see if maybe the push rods are bent or valve springs are bad. Everything checked good under the tin. At this point I say fawk it I am gonna put it together and see what it does. It must have ran lean, I hear that propane and lean conditions are very bad and bad things happen quick.
Now I have read that with running propane I should shorten the gap on the plugs. Basically the motor was stock and just a mixer added with some advance added. I figure it is time to tune it right if it isnt too late. When I got the distributor the sales guy said gap the plugs a bit more than stock because of the better coil that came with the distributor? So shorten the plugs for propane but lengthen them for a hot coil? So pretty much I left the plugs at stock gap maybe a hair shorter.
I put everything together and try to fire it and a big backfire out the exhaust. Advance the timing a bit and a backfire out the mixer(shit). Advance a bit more and it fires up. So I set the timing at about 12deg BTDC with the vacuum advance unhooked and it runs sweet. Idles great and revs smooth. I use the temp gun and every cylinder is consistant in heat output. So I think I may be able to baby the motor a few more trips. I will find out Saturday when I try full throttle runs at the beach.
Time to collect some parts for a replacement motor. I have a stock 454 on the floor to build while keeping the current one running.
I was about 5 minutes away from throwing the towel in and not bring the truck.
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Post by Jonny tsunami on Aug 1, 2012 23:26:35 GMT -5
Glade you didn't throw in the towel Maybe if you have the coin, some forged pistons would be good. you need them to run big nitrous, there more resistant to melting.
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Post by copenhagen on Aug 2, 2012 0:47:13 GMT -5
Dang, about halfway through your story, i told roni, "I dont think jason is gonna make it." Hopefully it hangs on until saturday
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Post by Brennerbadboy on Aug 2, 2012 18:29:44 GMT -5
HOPE IT HOLDS TOGETHER, if i have anay parts ,or help you might need when you tear into it let me know SEE YOU FRI .
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Post by poorboy1 on Aug 2, 2012 19:47:41 GMT -5
Scoped the cylinders. The hole appears to me machined so it is not the compression leak. I'll post pics later.
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Post by poorboy1 on Aug 8, 2012 20:52:09 GMT -5
I busted my trans at summerbash. I have no clue what is wrong with it but either way it has to come out. I got the skid plates removed today. it took 3 cut off wheels and a bit of hammer work but they are off. Hopefully sometime this week I will get the trans on the ground and do a closer inspection to see why it failed. I have a couple ideas but just not sure. Attachments:
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Post by Brennerbadboy on Aug 8, 2012 21:30:08 GMT -5
give me a call if you need my trans jack
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Post by poorboy1 on Aug 8, 2012 22:06:09 GMT -5
most likely will.
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Post by poorboy1 on Aug 11, 2012 17:42:58 GMT -5
Thanks for the jack pat. I got teh fluids dumped, skid plate cut off and drivelines pulled. Also swapped out to teh roller tires. Tomorrow I plan on actually pulling teh trans and getting teh new one in.
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Post by poorboy1 on Aug 12, 2012 16:54:54 GMT -5
The trans is out, what a fricken pita that was. I was ready to just scrap the whole damn truck and start over. Once the trans was on the ground I pulled the torque converter expecting to find broken ears on the trans pump shaft but I did not. I can not find anything wrong visually? Stumped at this point. I am afraid to put the used torque converter in the other trans so I will have to save up the money to buy a new one. Also found twisted splines on my carrier bearing. Now I need either a new shaft or I need to make one from a 205 tcase. Either way I will be down for a while.
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Post by poorboy1 on Aug 12, 2012 17:43:09 GMT -5
Twisted shaft. Attachments:
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Post by Rock Dawg on Aug 13, 2012 13:52:04 GMT -5
The trans is out, what a fricken pita that was. I was ready to just scrap the whole damn truck and start over. Once the trans was on the ground I pulled the torque converter expecting to find broken ears on the trans pump shaft but I did not. I can not find anything wrong visually? Stumped at this point. I am afraid to put the used torque converter in the other trans so I will have to save up the money to buy a new one. Also found twisted splines on my carrier bearing. Now I need either a new shaft or I need to make one from a 205 tcase. Either way I will be down for a while. Not sure by maybe this guy can help on your Tranny? He may have parts cheap, or advise? Seems his prices are pretty cheap. portland.craigslist.org/clk/pts/3198643614.html
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Post by poorboy1 on Aug 13, 2012 14:01:39 GMT -5
I have a trans to put in, just not sure about the torque converter
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Post by chevtech on Aug 14, 2012 1:19:24 GMT -5
I picked up a heavy duty th400 torque converter from transtar (behind six states) on columbia for just over $100. I can pick one up for you if you want, just let me know.
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