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Re: My 78 K15 High Sierra build - Fish Tremble
I fought the firing of my new crate 350, resetting TDC and distributor numerous times. Found my balancer for an 86 has timing mark set at 12 o'clock but the crate 350 timing tab is at 2 o'clock. Finally remarked the balancer and it lit off. Pulling my hair and concerned the whole time about ending up with a flat cam.
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Re: My 78 K15 High Sierra build - Fish Tremble
Hmm, bought a new balancer and pointer from Jegs at the same time as I was ordering the engine. I hope the guy helping me knew enough to put the correct parts on the order.
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Re: My 78 K15 High Sierra build - Fish Tremble
If it will run you are close, advance or retard your timing a little whichever makes it run/start easier by ear. Look and see where your vacuum advance ends up you could be off a tooth or two. Once satisfied, break out the timing light, disconnect your vacuum advance and block off any vacuum leaks. Get the timing closer, this stage should tell you if your balancer and or mark are wonky because it’ll be off and run poorly if you try and adjust to spec.
After it’s been running and your cam is broken in look into adjusting the idle mixture (w/vacuum gauge or by ear) then retime it again (double check your settings), carb adjustments again. After a couple rounds of this, it should run pretty good for you. |
Re: My 78 K15 High Sierra build - Fish Tremble
Congrats on the new engine! I agree that it's too nice a truck for an old wore out motor. :metal:
I hope you have a heater in your shop so you can go out there today and get her tuned! :lol: I just went out to add some water to our pool and the line was frozen. I wasn't expecting it to get this cold. |
Re: My 78 K15 High Sierra build - Fish Tremble
Thanks for the pointers Brett! No heater in the shop Greenlee. It was 21 degrees when I got up this morning - I wasn't expecting it to be that cold either! I'm hoping to get back to it this weekend, but the wife's 2002 Tahoe won't crank with a brand new battery so have to figure that one out first. Working on that out in the driveway - just have to bundle up!
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Re: My 78 K15 High Sierra build - Fish Tremble
No problem hope it helps, did you get your Tahoe going?
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Re: My 78 K15 High Sierra build - Fish Tremble
Well, I spent a lot of time figuring out how to troubleshoot the Tahoe's problem and decided it was a bad starter. Got voltage to it when the key was in START, but nothing happened, not even clicks. Then discovered that I couldn't get the starter out. I couldn't even back the nose out of the bell-housing. Started reading about what I'd have to remove to get some space and decided this was a job I was willing to pay someone else for.
Between that, taking down Christmas lights and mowing the yard (yes - mowing, the weeds never take a break down here) I only got a little time on my truck. Basically started over getting #1 to TDC, setting in the distributor etc. I can now get it to idle without feeding it throttle, with the distributor positioned around the center of its range for rotation so that's good. It isn't running smooth though and it is dumping a lot of unburned fuel out the tailpipes so I have a ways to go still. Minor timing adjustments don't help enough. I can imagine that I've fouled the plugs by now. I think my next steps will be to research setting the carb to recommended starting points on adjustables, and cleaning the plugs again. |
Re: My 78 K15 High Sierra build - Fish Tremble
Wow, from not enough fuel to too much fuel, CRAP! Sounds like a known good carb would have been helpful right about now.
Here is a link that might be helpful. http://www.superchevy.com/how-to/eng...ike-it-should/ |
Re: My 78 K15 High Sierra build - Fish Tremble
What type of new carb did you buy? I hate to say it, but I've run brand new Edelbrock and Holley carbs before and could never get the truck running good until I switched back to a regular old rebuilt Quadrajet. :lol:
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Re: My 78 K15 High Sierra build - Fish Tremble
I got a rebuilt QuadraJet as well, so I should be good to go! Been watching a bunch of videos on rebuilding, troubleshooting and tuning Quadrajets done by a guy going by whosaidtyler this week so should be fully armed to go out this weekend and get this thing tuned in.
BTW, these are a very good series of videos. The guy obviously knows what he's talking about and does a very good (and thorough) job of explaining things. |
Re: My 78 K15 High Sierra build - Fish Tremble
There are tons of great how vids on Youtube.
Will have to check it out. |
Re: My 78 K15 High Sierra build - Fish Tremble
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Aside from adjusting the choke to force it to stay open (I don't have the choke stove stuff to hook up the hot air choke), I think the carb shop just put all the adjustment screws in far enough to catch a few threads. Idle and mixture screws all needed to go in at least a dozen turns to get close. Then some back and forth fiddling between carb and timing got it running pretty well. I LOVE the sound of this exhaust, and so stoked to know I'm just a few steps from being able to drive this thing:metal: |
Re: My 78 K15 High Sierra build - Fish Tremble
Oh yeah, sahweet! You are da man! :metal:
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Re: My 78 K15 High Sierra build - Fish Tremble
I think it sounds great too! Your on your way to be driving it real soon!
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Re: My 78 K15 High Sierra build - Fish Tremble
How sweet! Listening to that baby run makes me want to get out and get working on mine! I will be working on some small items today, so hopefully by the end of the month I can attempt to fire.
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Re: My 78 K15 High Sierra build - Fish Tremble
Looking great. Truck sounds good!
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Re: My 78 K15 High Sierra build - Fish Tremble
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I've finally finished the cut & buff on the front fenders and hood after having done it once. I had touchups to do on the fenders and repainted the hood. Any case, the front end is finally going back together. I'm not sure what this grille is from. It might be an old aftermarket one. Not crazy about it but haven't found one I like better for a price I can swallow. I'd have mounted the hood but my help (2 of my grown kids) didn't show up until right at dinner time - impeccable timing as usual :lol: |
Re: My 78 K15 High Sierra build - Fish Tremble
You know you need to be proud of yourself right? You have done an amazing job on this truck!
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1) Still haven't bled the brakes, but I have bench bled the master 2) Haven't figured out why it won't start from the key - have to use the remote start switch 3) Have to find a suitable bucket to sit on until I get the bench in :lol: |
Re: My 78 K15 High Sierra build - Fish Tremble
Congrats on the DONE stamp for paint, looks great Rick! :uhmk:
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Re: My 78 K15 High Sierra build - Fish Tremble
Neutral safety switch wired right?
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