|
Re: Sullii the 72 GMC 1500
Great looking truck! Loving this build.:metal:
|
Re: Sullii the 72 GMC 1500
Quote:
|
Re: Sullii the 72 GMC 1500
Quote:
|
Re: Sullii the 72 GMC 1500
If you feel like working at it Frizzle Fry has a great thread on inner fender modification
https://67-72chevytrucks.com/vboard/...d.php?t=258732 |
Re: Sullii the 72 GMC 1500
Quote:
|
Re: Sullii the 72 GMC 1500
Over the last few weeks I've gone through a number of tests to try and determine where this vibration is coming from. First I started with my original 15x6 wheels/tires on the front with the 15x10s on the rear. Same vibration, so I redirected attention to the rear tires/wheels.
https://live.staticflickr.com/65535/...dfeecb66_b.jpg Next, I ran the new 15x8 245/60 setup on the front with the original 15x6 on the rear. It looks goofy, but the truck ran smooth without the 15x10s on it. With the 15x8s on the front the steering has a weird point where it feels like the tires grab more and turn in if I hit any kind of bump in the road. For the current experiment, this is an aside and something I will think about later. https://live.staticflickr.com/65535/...7fa2ab6b_b.jpg Last test was to run the original 15x6 on the front with the 15x8 and 245/60 on the rear. This configuration gave me a very slight wobble/vibration at the same RPM as the 15x10 295/50 combo. At this point I was really fed up with these tires. It was also at this point that my daughter figured out she could turn the garage into a skating rink! This was a good reminder to look at the positives. https://live.staticflickr.com/65535/...3a8e9287_b.jpg https://live.staticflickr.com/65535/...c341bfb2_b.jpg One thing that concerned me was the insane amount of weights they had to add to my 15x10s to get them balanced. They had 6 oz of stick on weights on one side and 2.5 oz on the other. This, combined with my tests, got me thinking that I may have screwed up these wheels when I changed the backspace. I rechecked the runout and got 0.034" radially and 0.055" laterally. From what I can find this is still within the upper limits of spec, but it's still more than my original 15x6 wheel which was less than 0.030" in both measurements. https://live.staticflickr.com/65535/...4a73ac40_b.jpg https://live.staticflickr.com/65535/...ae19f554_b.jpg I also measured runout on the tires which was about 0.060". Again, the tire shop told me the runout was within spec when they checked it. After all this investigation, I decided I needed to abandon this setup for now and go back to what I know was working. Problem was, I now had these Cooper tires that I didn't want anymore and I didn't feel right selling them to someone else when I knew they might be out of spec. Luckily, I purchased these from Summit and they were more than willing to honor Coopers 45 day satisfaction guarantee exchange policy. All I had to do was send these tires back and they would let me exchange them for another tire within Cooper's catalogue. So, the truck went up on stands for a few weeks while I waited on new tires. https://live.staticflickr.com/65535/...60cdcc9f_b.jpg https://live.staticflickr.com/65535/...d9743406_b.jpg |
Re: Sullii the 72 GMC 1500
Interesting calculations and diagnosis and will be waiting-patiently for the next update good news with the Summit return����
|
Re: Sullii the 72 GMC 1500
Quote:
|
Re: Sullii the 72 GMC 1500
Fast forward after two weeks of waiting for my replacement tires. I'm not complaining though. Summit took the old tires back no questions asked, paid for shipping both ways, and refunded me the cost difference between the new and old tires. Can't beat that. The only catch was I had to get Coopers to replace the old set. They do not have many options left that fit 15" wheels these days, so I had to go with a tried and true setup: 225/70 fronts and 275/60 rears. I have now had 275/60s on the rear of all my vehicles. You'd think I would know by now that this size is what I like.
I was able to get these tires mounted up by the shop that mounted my last set the same day they were delivered. The 225/70 replaces the 215/75 Hankook that I had on the front originally. The new tire is a bit shorter and wider than the 215/75. The 275/60 on the rear is much wider and a little shorter than the 235/75 I had on the rear originally. This new rear tire fills out the wheel well much better and doesn't look stretched like the 235/75 did. https://live.staticflickr.com/65535/...50f35996_b.jpg Seeing the truck back on the ground was like seeing it come together for the first time again. The white letter tires were fun to try, but ultimately this wheel/tire setup is much more my style. After seeing the truck with this setup I'm not sure I even want to revisit the 15x10s again. For now, I will keep them in the corner until I run this setup for a while and then make a decision. https://live.staticflickr.com/65535/...16153a28_b.jpg https://live.staticflickr.com/65535/...7a6c0851_b.jpg https://live.staticflickr.com/65535/...b3fe7823_b.jpg https://live.staticflickr.com/65535/...b5eb30af_b.jpg All that was left at this point was to finish it off with some caps and go for a test drive. Overall, the truck felt significantly better with this new setup. The vibration at 2300 RPM was gone and the weird grabby steering issue was resolved. I should make note that going back to these wheels allowed me to go back to my original camber adjustment. The other tires forced me to remove 1/8" of shim and add 2 degrees of camber. It was also nice to have my steering radius back. It is a much more pleasant driving experience with this setup and with everything working properly. The truck just floats down the road so smoothly now and requires very little correctional steering input. It took me quite a bit of experimentation to get here, but I think it was worth it now that I know what does and doesn't work. I think for now I will focus on driving the truck and enjoying it while it is in such a fine tuned state. https://live.staticflickr.com/65535/...930145f8_b.jpg https://live.staticflickr.com/65535/...da68c3e5_b.jpg https://live.staticflickr.com/65535/...89b39ed1_b.jpg https://live.staticflickr.com/65535/...74ea31be_h.jpg |
Re: Sullii the 72 GMC 1500
love the stance looks great
|
Re: Sullii the 72 GMC 1500
Perfect!!!
|
Re: Sullii the 72 GMC 1500
Quote:
New page, new problems. While the truck was on stands waiting on tires, I discovered two things that need immediate attention. First was a coolant leak that was coming from a crack in my block. I never noticed this spot while I was doing the swap, and I've never noticed any coolant on the ground. It appears the leak was slow enough that the coolant evaporated before it dripped. At first I was thinking the worst and that I would need to replace the block, but after reviewing old photos I realized the block has been cracked for quite a while. https://live.staticflickr.com/65535/...6d6dfb9f_b.jpg https://live.staticflickr.com/65535/...1516b860_b.jpg I figured if I've been driving it like this the whole time I've had it then it was worth trying something to stop the leak. I decided to add some GM coolant tablets into the radiator and after several heat cycles my leak was gone! I'm not sure how permanent this solution is but I plan to run it and see if this issue ever resurfaces. https://live.staticflickr.com/65535/...93431b99_b.jpg The second issue was my idler pulley. The outer lip of the pulley had cracked off and the grooves were starting to cut into my belt. Then I realized I made a bonehead mistake. I was supposed to use a smooth idler pulley for the backside of the belt. I'm not sure how I missed this, but at least I caught it before my belt snapped! https://live.staticflickr.com/65535/...19aaaf82_b.jpg At first I tried a 5.3 truck pulley, but it required spacers and the diameter was too large. Next I tried a 5.7 Camaro pulley and this was the correct one. https://live.staticflickr.com/65535/...dc2622c4_b.jpg One last aside is a correction to my bed alignment. I thought that my bed didn't look quite right, especially when viewed from the side. https://live.staticflickr.com/65535/...6c65f0d0_b.jpg After running a stringline I realized how far off it was. https://live.staticflickr.com/65535/...1ec45021_b.jpg I took some measurements and added the correct amount of spacers under each mounting point and was able to get things much closer. https://live.staticflickr.com/65535/...bedd5aea_b.jpg Bed misalignment is one thing that always jumps out at me when I see a truck, so I'm glad to have this resolved. https://live.staticflickr.com/65535/...1c5c413d_b.jpg |
Re: Sullii the 72 GMC 1500
Now that I have those issues squared away, it's time to enjoy the truck a bit! I discovered that there is a truck show next weekend called C10 Resurrection that isn't too far from my house. They are doing what they call a photo poker run where you take photos of your truck at landmarks around town for a chance to win a prize at the show. I don't care too much about the prizes but I definitely wanted to take the opportunity to ride around in my truck. My kids tagged along for the ride. First we hit the carwash and then we were off to Lexington.
https://live.staticflickr.com/65535/...dcb1ac59_b.jpg They have a list of locations that qualify for the drawing. Of course, since Lexington NC is known for barbeque you have to hit a BBQ restaurant. https://live.staticflickr.com/65535/...bdc3ba78_b.jpg There were a total of four locations in Lexington that we needed to hit. https://live.staticflickr.com/65535/...e41c7157_b.jpg https://live.staticflickr.com/65535/...46bdef1f_b.jpg https://live.staticflickr.com/65535/...b29b0cbd_b.jpg https://live.staticflickr.com/65535/...cc26991a_b.jpg There were also two locations a few towns over in Spencer NC. https://live.staticflickr.com/65535/...b3914255_b.jpg https://live.staticflickr.com/65535/...2da43380_b.jpg We had time to hit 6 out of the 9 locations. It made for a fun morning driving the truck, hanging out with the kids, and taking some cool photos! |
Re: Sullii the 72 GMC 1500
It was such a beautiful day today and the lighting was perfect so I decided to pull the truck out into our field and get a few shots of it "in the weeds".
https://live.staticflickr.com/65535/...7b36af14_b.jpg https://live.staticflickr.com/65535/...1a213e22_b.jpg It was fun seeing the truck hiding in the grass, so I left it out until evening. When it was time to pull it inside I was rewarded with the setting sun casting the perfect glow on the truck. Photos like these are the ones I love revisiting after years gone by and I'm several builds later. Keeping that in mind, I'm trying to remember to enjoy this truck while I have it! https://live.staticflickr.com/65535/...82ba532c_h.jpg https://live.staticflickr.com/65535/...9c593370_h.jpg |
Re: Sullii the 72 GMC 1500
I'm just catching up here with some photos from the last month. I've been driving the truck quite a bit and just trying to enjoy it. I even drove it to work every day one week. I want to put as many miles on it while the weather is still tolerable. I also made a successful trip to the C10 Resurrection. It was the first year for the show and they had 250 trucks show up. Not too bad for a small town show in Lexington NC. I only managed to get two photos of the truck. One before heading out to the show, and one arriving. My friend came with me and after about two hours we left and headed back to his place to work on his truck with some newfound motivation. Ultimately, we ended up bringing his chassis back to my house so he has room at his place to start body work. He helped me so much with my truck and now we are making some serious progress on his truck.
https://live.staticflickr.com/65535/...6c704b7a_b.jpg https://live.staticflickr.com/65535/...72e15126_b.jpg https://live.staticflickr.com/65535/...6f6bdf1b_b.jpg The only issue I've had with the truck lately is a dead starter. At first I thought it was the battery so I tried jumping it with my Tacoma, but still no luck. Then I tried rolling the truck down the driveway and dumping the clutch and it fired right up. At this point I was highly confident it was the starter. Easy enough to swap. It took longer to go get the starter than it did to swap it out. I'm thinking the old one died because it was worn out because I don't think my exhaust is too close. We'll see how long this new one lasts. The starter was indeed the issue. Back to cruisin! https://live.staticflickr.com/65535/...3546c8ac_b.jpg https://live.staticflickr.com/65535/...4a441b4d_b.jpg Here's a few more random shots of the truck. All out and about near home and work. The kids hop into a photo every now and then. They are usually with me since they enjoy riding in the truck just about as much as I enjoy driving it. https://live.staticflickr.com/65535/...c96e04e1_b.jpg https://live.staticflickr.com/65535/...6d09e581_b.jpg https://live.staticflickr.com/65535/...51bbf9eb_b.jpg https://live.staticflickr.com/65535/...1ee9fd98_b.jpg I've also been trying to improve my photo taking skills, at least as much as I can given I'm still just using my phone! My biggest mistake is I've been using the native 26 mm focal length of the lens which allows you to get really close to the truck and still fit it in the frame. This gives it a distorted perspective that exaggerates the size of parts that are closer to the camera. It makes for an interesting photo sometimes, but it doesn't faithfully represent the dimensions of the truck. https://live.staticflickr.com/65535/...df92be8d_b.jpg A more natural focal length for automotive photography is around 35-40mm. Unfortunately you cannot change this on my phone. You can, however, mimic it by changing the zoom to 1.5x. This forces you to take several steps back to fit the whole truck in the shot. The tradeoff is you reduce photo quality slightly, but the truck looks much more proportionately correct. https://live.staticflickr.com/65535/...c9164dd9_b.jpg My tentative plan for the truck this year is to drive it until the weather is unbearable. Then I will most likely park it until the weather cools off just in time for the next C10 Fall Revival. After that, I will probably be ready to start working on the interior. That's it for now. |
| All times are GMT -4. The time now is 08:08 PM. |
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com