Re: 1964 C20 Turbo LQ4 Build
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Week off helped but should have focused more on truck . cold almost dont hot side darn near done. Need tube for WG, maybe another support for downpipe and then wrap it up. I am so sick of welding pie cuts, especially in this heat lately.
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Re: 1964 C20 Turbo LQ4 Build
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stuff
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Re: 1964 C20 Turbo LQ4 Build
Looks good
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Re: 1964 C20 Turbo LQ4 Build
Love the turbo builds, in for this one.
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Re: 1964 C20 Turbo LQ4 Build
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started stabbing the fuel stuff. had a blazer unit but the lines were so stinking small and i wanted -8 and -6 and I mutilated the sender trying to modify... soo I am making my own. some aluminum sheet and off I go. Jeep 15gal tank.
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Re: 1964 C20 Turbo LQ4 Build
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Its been a while since I updated.
few things accomplished. a-fuel sender closer b-rad fan installed c-computer mounted d-rad hoses. E- power steering A) I did not like the connections being in the tank so I wanted a bulkhead but realized they are $32 dollars for something stupid. This is a pvc (pretty sure) one from menards for $2. I soaked it in gas for two days and its fine. It is also getting the fuel safe sealant gobbed into the top and bottom. otherwise im not worried about it... need a connector now. B) I ended up buying a volvo fan off ebay becuase I wanted the mounting holes. I had a friend cut and bend the shroud i drew up out of aluminum. after massaging everything in I made some hard mount blocks to hold it all to the core support. lot of welding on the radiator itself. cross over came VERY close. dont like it but running it for now... I also need the two connectors to use the volvo relay that has it all in one so I just need to run wires to it. C) computer mounting in the glove box. about to start wiring but need some last locations determined like coil packs. I need to relocate them due to headers and make new wires. probably going to use kit msd 32079. I bought the seals it split grommet (overpriced) but it is 3" hole and I am going to open an existing hose for the harness. (SGS35100) D) radiator hoses are done. I bought a heater core bypass loop hose online since it is a tight bend and two different sizes. The bottom hose i kind of had to cut. I tried using 21710 Gates from another forum since the end sizes were correct 1.5 and 1.75 but i ended up cutting in half and putting a tube in between them so i will have 4 hose clamps on it. The top was a universal hose with a 90 on it. (dayco 81491) both are 1.5" so i had to order a reducer on the block side for 1.25" (Gates 26390) E) got my captain fab bracket for 76 / 79 power steering box. mounted it and its misaligned. not sure what i wanna do about this one yet, work my way up the trail. the box is 13/16-36 spline and the original shaft is 3/4. the 79 shaft i have I cut and it slips right over the original. still up in the air for what route to go. may have to add some u joints. I ordered a 3/4 rag joint but it obviously didnt fit so pay attention to what you need. I didnt realize there were two, what a dope. |
Re: 1964 C20 Turbo LQ4 Build
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more pics
one thing to note was that I heated and rotated the spout on the truck pump so it would be 90 to the radiator. thought it would be easier to find a hose. |
Re: 1964 C20 Turbo LQ4 Build
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more - er
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Re: 1964 C20 Turbo LQ4 Build
Did you loosen up the steering column mount as per the installation instructions?
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Re: 1964 C20 Turbo LQ4 Build
I have not at this time. Tomorrow I will be. the consensus I got was that it wasn't going to be enough. I will get to it in the AM. Thanks for checking in.
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Re: 1964 C20 Turbo LQ4 Build
Looking good.
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Re: 1964 C20 Turbo LQ4 Build
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A short update. Newborn makes things slower-er.
Messed around with steering and the firewall bolts solved it as far as i can tell. got it all lined up. Got my overpriced firewall grommet installed for the computer behind the glovebox I have an american shifter for 4l80 I bought used and the gate was worn to the point it didnt work. I found lokar parts work on this (are they the same company??) A.S. wanted something like $100 or some other ludicrous amount. LOK-S-6946 fits if fine for about $20 also started the hydroboost. think I am going to get the Tallon threaded shaft and get it together. Also welded in the BOV in the alum intake tube. Extra slow and steady. maybe my boys will finish it for prom... |
Re: 1964 C20 Turbo LQ4 Build
Nice build, cool to see another Michigan turbo truck
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Re: 1964 C20 Turbo LQ4 Build
Formerly mi lol. Back to ****ty Il.
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Re: 1964 C20 Turbo LQ4 Build
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Did something. hydroboost mounted. Drew up and cut the brackets 3/16 and 3/8 for nut clearance. Tack welded a little booger so it doesnt rotate. I am unsure if I would do it again, just buy it probably. should work fine if anyone wants to try it.
I also made a square nut to remove the hyd nut. |
Re: 1964 C20 Turbo LQ4 Build
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Not sure where almost a year went since I posted, oh wait, kids haha. I finally had enough again (again) and moved the truck to the lift so it motivated me to work on it.
-Fuel system - -6 return -8 feed PTFE braid to Nicopp hard in between. going E85 - diesel truck fuel iflter 6 micron at the tank (fed be walb 450) - jeep 16 gallon tank with custom sending unit/ AN bulkheads (super simple piece) - made the bracket to mount it in the rear. did have to cut rivets on one crossbar. Will decide if it goes back in later. -need to figure out filler neck/breather still Trans - cooler is 11" remote syst from am. volt. its a cheap one and ill see how it does. under passenger bed for ease. THis will be regular rubber trans hose and barb fitting. my AN fitting costs are getting ridiculous and dont think i needed here. I'm sure there is something else in between... miscellaneous : -steering linkage mounted -cruise control mounted -turbski drain plumbed and fitting welded in pan. -coils are mounted (in a weird spot but we will see) -Ditched the stock harness and sold my soul for a holley Xmax. |
Re: 1964 C20 Turbo LQ4 Build
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more pictures
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Re: 1964 C20 Turbo LQ4 Build
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few things started
battery box, not sure about this one yet. targets a d38/78 battery dimensions, I had a batt close around and it was tight. like bolt head rubbing tight. I cut the corner of box down into the fender to give me some feel good spaced between the hood and the posts. fuse panel- started using original mounting screws. the terminator will be in the glove box. all power has a short run through drivers. i will have to redo the body harness. |
Re: 1964 C20 Turbo LQ4 Build
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I am using a volvo fan and had a hard time finding the relay plugs. the signal plugs are available from amazon. The main power wire I had to get from dave barton website. have to buy three individual parts. The gound i just cut and made a short run to my battery ring terminal
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Re: 1964 C20 Turbo LQ4 Build
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Well somehow 2 years has escaped me. Time for a major update, I will try not to ramble. I have forgot what I have even posted so there may be some overlap
short story: The truck was running and under its own power, then first test ride it hit 7 psi and blew three ring lands. End sad story haha. Fuel: -All lines were completed in Nicopp 1/2in feed 3/8 return -A fuel filter was added off the tank with walboro 450. -1/0 wire ran all the way to terminal for futur pump if needed. -a crappy in bed nozzle was made to fill. not thrilled with it. The jeep tank sits close to the bed and I rush things Engine, -coil mounts were made to sit on top of the valve covers and I did not want to modify the new harness yet so i made the wires wrap around the headers and go from the underside. -Ditched the GM and decided to just go Holley Terminator x max with 4l80e Brakes -Had brake line system and drive shaft quoted to have someone get the truck on the road and was told 5k. That helped me decide to get going on it myself. 700 later i was moving -Big shout out to ORME brothers in Cali. I needed help talking myself through the mix match mess of 76 front 79 rear and 2002 MC. They helped me get through it and piece it out over the phone and ship what I needed. they were shop #6 i talked to trying to get help talking it out. - Had to cut and modify the bar connecting the pedal to the hydroboost. little lathe work. Driveline -truck was brough to a fab shop on the trailer and said measure it. $320 later it was correct length and 3.5in diameter that I provided. little mixup with the 1410 ujoints vs the 1350 u joint in my 14 bolt rear. I bought a special adapter u joint until i change the rear. power steering -had to get some special hoses made and some certain AN fittings but not sure I am happy yet as they are aluminum and seem to leak slightly. off subject. I accidently bought a 1948 3600 into the mix for some reason. |
Re: 1964 C20 Turbo LQ4 Build
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more
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Re: 1964 C20 Turbo LQ4 Build
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Re: 1964 C20 Turbo LQ4 Build
Oh damn!!
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Re: 1964 C20 Turbo LQ4 Build
The broken ring lands are just a right of passage.....
$150 on eBay for a set of 8 rods and pistons, file the rings and your are good to go! (he says safely from the comfort of his desk.....) P. :D |
Re: 1964 C20 Turbo LQ4 Build
Sorry sometimes I get emails sometimes I don't about responses.
I couldn't justify the full forged route being the low target. I got 8 Gen4 rods and 8 Gen4 rods/pistons for $150. One piston was bad so I ended up buying another single off ebay. Mahle rings, and Clevite H bearins are waiting to go in after a dingle berry hone on 240 grit. This is favoring the Sloppy mech side of things. I was trying not to but I feel it'll get me down the road. Other items like injectors (will prob get sent out or cleaned) and FPR to bring it back down. |
Re: 1964 C20 Turbo LQ4 Build
Do you know what caused the broken lands? Timing?
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Posted via Mobile Device |
Re: 1964 C20 Turbo LQ4 Build
A lean spike should melt a piston. Detonation breaks things. At 7 psi you should have no more than 15-20° on pump. That lean spike is also at 43kPa, so you're not actually in boost at all, so it shouldn't be hurt at that point in the datalog.
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Re: 1964 C20 Turbo LQ4 Build
Bad luck is acceptable.
"If it weren't for bad luck, I'd have no luck at all." |
Re: 1964 C20 Turbo LQ4 Build
tmils123 what kind of air bags are those and where did you get them? also how dose it ride with those?
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Re: 1964 C20 Turbo LQ4 Build
They look like Universal Air "Air House 2" bags. I'm running them, but mine hasn't been on the street yet.
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I have D2600 bags on the rear and my last short drive they all seem bouncy as hell with new shocks. Maybe shock geometry it off but I am not much lower than stock. Ultimately I think I will pocket the LCA in front . Posted via Mobile Device |
Re: 1964 C20 Turbo LQ4 Build
I need 125psi in those bags to life my '61 to ride height. Ride height is with the bag about 5.5" tall or so.
Being a small bag, it'll need higher pressure and be kinda firm, but bouncing on the front bumper it doesn't seem too firm, but I set my vehicles up QUITE firm. |
Re: 1964 C20 Turbo LQ4 Build
Short video of it idling. Been a fun summer. Needs new tires :). I am over the catch can smell and exhaust fender dump but I’d rather enjoy for a minute. And get my 49 rolling. https://youtu.be/pCjRBacFe3Q?feature=shared
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Re: 1964 C20 Turbo LQ4 Build
It sounds healthy! Just refreshed with your thread and got caught up!
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