Re: 1993 Quad4 GTZ: Project WTF
Posted: Wed Jul 08, 2015 9:34 pm
Figured I'd post a little bit of an update. Most of this will be redundant if you're on Facebook.
After getting things ready for Bfest 2014, the new engine didn't seem to be making much power. As such, I really hadn't driven the car much at all since June 2014 and until about a month ago, it had pretty much sat. With Bfest 2015 fast approaching, getting the car running correctly became priority. The engine started fine and had excellent oil pressure but had a stumble/miss and was slow to rev. After spending dozens of hours checking out any/all systems, I decided to swap the fuel pump simply because it as the one thing I hadn't changed since buying the car (virtually every other part/sensor was changed out with no change in symptoms) -- Keep in mind I bought the car without an engine in it so I'd never seen this car run correctly.
After swapping the fuel pump out the car had noticeably more power but still had a miss. I decided to check the plugs to ensure that they were still gapped properly -- as they had ~550 miles on them I didn't expect any issues with them. The gap was fine on all 4 plugs. I cleaned the porcelain off to put a label on each one and discovered that 3 of 4 plugs had cracked insulators. Swapped them out with new ones and the car ran like a champ - ALL issues were gone!!! Over the next week I ordered parts for the A/C overhaul and we were able to head down to Bfest 2015 in Biloxi. The car ran great the entire time.
After the group photo at Bfest I left the parking lot pretty quick - After letting off of the gas the car developed a horrible knocking/bearing noise. In summation, the flywheel bolts came loose. On Saturday night myself, yellow3800, themixer, and 3X00-modified (and like 15 others!) pulled the transmission to get to the flywheel bolts and re torqued things down. After the fix, everything was fine and I was able to drive the car home without incident.
So -- now with the car finally acting right I am beginning to think about the upgrades I've wanted to do for a while now. I'm going to be going through all of the suspension and get things back in decent shape. To get my parts baseline established, I'll probably go ahead and swap all bushings, tie rod ends, ball joints -- everything -- with new stuff. Probably overkill but I prefer establishing that maintenance baseline on cars like these that have likely sat in recent years.
I'm waiting for some new wheels and a Wilwood brake kit to arrive... I'll leave you to wonder about the wheels but I'm hoping that they'll help bridge the gap from the 90's to now while still fitting the lines of the car.
After getting things ready for Bfest 2014, the new engine didn't seem to be making much power. As such, I really hadn't driven the car much at all since June 2014 and until about a month ago, it had pretty much sat. With Bfest 2015 fast approaching, getting the car running correctly became priority. The engine started fine and had excellent oil pressure but had a stumble/miss and was slow to rev. After spending dozens of hours checking out any/all systems, I decided to swap the fuel pump simply because it as the one thing I hadn't changed since buying the car (virtually every other part/sensor was changed out with no change in symptoms) -- Keep in mind I bought the car without an engine in it so I'd never seen this car run correctly.
After swapping the fuel pump out the car had noticeably more power but still had a miss. I decided to check the plugs to ensure that they were still gapped properly -- as they had ~550 miles on them I didn't expect any issues with them. The gap was fine on all 4 plugs. I cleaned the porcelain off to put a label on each one and discovered that 3 of 4 plugs had cracked insulators. Swapped them out with new ones and the car ran like a champ - ALL issues were gone!!! Over the next week I ordered parts for the A/C overhaul and we were able to head down to Bfest 2015 in Biloxi. The car ran great the entire time.
After the group photo at Bfest I left the parking lot pretty quick - After letting off of the gas the car developed a horrible knocking/bearing noise. In summation, the flywheel bolts came loose. On Saturday night myself, yellow3800, themixer, and 3X00-modified (and like 15 others!) pulled the transmission to get to the flywheel bolts and re torqued things down. After the fix, everything was fine and I was able to drive the car home without incident.
So -- now with the car finally acting right I am beginning to think about the upgrades I've wanted to do for a while now. I'm going to be going through all of the suspension and get things back in decent shape. To get my parts baseline established, I'll probably go ahead and swap all bushings, tie rod ends, ball joints -- everything -- with new stuff. Probably overkill but I prefer establishing that maintenance baseline on cars like these that have likely sat in recent years.
I'm waiting for some new wheels and a Wilwood brake kit to arrive... I'll leave you to wonder about the wheels but I'm hoping that they'll help bridge the gap from the 90's to now while still fitting the lines of the car.