boosted300 Posted March 10, 2018 Author Share Posted March 10, 2018 2 hours ago, trackzpeed said: Such a clean and well thought out build, congrats. You may want to consider heat shielding your brake fluids too. Driving hard may boil your fluid and eliminate your brakes when you need them most. Just my .02. Jim Thank you sir...and you are definitely right, a heatshield for the brake master cylinder and booster area is a must...added to the to-do list! Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 10, 2018 Author Share Posted March 10, 2018 So you're looking at the bracket for the coolant overflow and thinking, where the heck is that thing going? I used the front mounting bolt for the AC compressor... Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 10, 2018 Author Share Posted March 10, 2018 (edited) ...and created usable space from empty air! I won't lie, I was very pleased with myself as this thing had a little thorn in my side. Edited March 11, 2018 by boosted300 Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 10, 2018 Author Share Posted March 10, 2018 Finally it was time to go to the dyno for tuning... Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 10, 2018 Author Share Posted March 10, 2018 With the previous setup, I had managed a best of 419hp @ 19psi... That was with an internal wastegate, stock cast iron exhaust manifold, .63 A.R, and a smaller intercooler... Now with external wastegate, tubular exhaust manifold, .82 A/R, and a large intercooler, I was hoping for a fairly decent improvement. After several warmup runs to get the baseline set, we started upping the boost. This time we managed 469rwhp @ 19psi, but we noticed that after that the A/F ratios started creeping up. The tuner tried to compensate by increasing the injector pulse, but no luck. We watched the fuel pressure during one of the runs and noticed it wasn't rising 1:1 after about 55 psi and, in fact, after 19 psi, it was actually dropping. The car has 3 Walbros; one primary to feed the surge tank, and two secondary pumps to feed the engine, so there should have been more than enough fuel especially for the horsepower levels we were making at that point. We checked the fuel pumps and verified they were all running properly…what the…? The only logical conclusion at that point was that the filter must be clogged. Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 10, 2018 Author Share Posted March 10, 2018 (edited) I had purchased the car from the previous owner as a “new” build, ie the car was not running when I bought it and I had to wait nearly a year from the time of purchase for the car to be "completed" and “driveable”. We had not touched the fuel system, lines, or tank since I purchased the car. And the car at this point had less than 1K miles since I purchased it, so I would have never thought that the fuel filter could possibly be dirty, let alone dirty enough to be clogged so much that it would restrict fuel pressure…silly me. We took the fuel filter out and this is what we found inside… Edited March 10, 2018 by boosted300 Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 10, 2018 Author Share Posted March 10, 2018 So I think it's safe to say that we found the source of the restriction... No you're eyes are not deceiving you...that's a piece of rubber hose in there... While the amount of dirt and debris in the filter was astounding on its own for a “new” build…I cannot begin to fathom how actual pieces of rubber hose found their way in there… It was unbelievable on one had…and yet, based on all that I had encountered after the purchase, totally unsurprising on the other hand. Because the amount of dirt and debris was so out of the ordinary, we decided that, to be safe, we needed to take the injectors apart and check the built in screen filters on each one before continuing with tuning. Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 10, 2018 Author Share Posted March 10, 2018 The good news is the injector filter screens were clean…back to the dyno! Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 13, 2018 Author Share Posted March 13, 2018 Third go-round on the dyno: Fuel pressure held steady this time. I told the tuner I wasn't trying to break any records and my main concern was not breaking the motor. One thing I did tell him is that I would like a number that started with 5... He delivered me a safe, conservative tune...that netted 510RWHP @ 23psi on 93 octane. I was satisfied with that, especially considering that traction was already near its threshold. Quote Link to comment Share on other sites More sharing options...
seattlejester Posted March 14, 2018 Share Posted March 14, 2018 Wow, congrats! Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted March 14, 2018 Share Posted March 14, 2018 Wow, very impressive, and a beautiful build. I love that blue. Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 15, 2018 Author Share Posted March 15, 2018 5 hours ago, seattlejester said: Wow, congrats! Thank you sir! Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 15, 2018 Author Share Posted March 15, 2018 3 hours ago, SleeperZ said: Wow, very impressive, and a beautiful build. I love that blue. Thank you very much sir, I appreciate that! It was a long, hard road to get here. More to come! Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 15, 2018 Author Share Posted March 15, 2018 Having spent so little "quality time" with my car over the previous two years, I occasionally make up for it with some random adoring photos... Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 15, 2018 Author Share Posted March 15, 2018 As summertime (2017) was soon approaching, at this point, I decided to try and get the AC system we had installed up and running. As much (or as little) as I know about cars, and as much experience as I've had with them over the years...AC systems are one of those things I've never been much of an expert at. I understand the integral components, and the way the system operates to produce the cold air inside...but it's the whole high pressure/low pressure, dual gauge side I never really knew much about. They've always been kind of a mystery to me and I've never really taken the time, nor had any reason, to try and understand them. Since the system was brand new, I knew I couldn't just go to Pep Boys and buy a can of Freon and pump it in. The system needed to be vacuumed to remove the air in the lines and ensure there were no leaks, there also needed to be some oil added...and then of course the whole high/low dual gauge bit to get the right amount of Freon in since there was no OEM manual that was going to tell us the capacity. I'm pretty OCD when it comes to my car and really the only other person who had touched it beside me was Doug...he's the only one I trust blindly. Other than him, I simply can't just take my car to any old shop and certainly couldn't leave it there to be worked on without me present. As a result, I had been putting off getting they system filled and running because it was still the cool season in Miami and it was easy to ignore. With summer approaching I now had no choice. Since going to the nearest Goodyear to get the system filled and running was out of the question, I searched for a boutique AC specialist and found a guy that specialized in vintage car AC systems. He vacuumed the system and my primary concern was soon put to rest as the system held vaccum and had no leaks. But that was as much good news as I was going to get for the day. As luck would have it, his fitting for the low pressure side was faulty and he couldn't get it to seat properly...so he couldn't charge the system... He told me he needed to order a new one and told me to check back with him in about a week. Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 15, 2018 Author Share Posted March 15, 2018 Winter in Miami is very brief and very fleeting. While it spans only 2-3 months at best, it really consists of sporadic spurts of a few days of cool to "cold" (by Miami standards) weather at a time mixed in with warm to downright hot days the majority of the time. The only consistent change in weather during the winter, for the most part, is milder, if not bearable, humidity. By the very next week, the weather was hot and, even worse, rainy...Even if I would drive the car in the rain...which I would never...driving in the rain without AC is among the most unpleasant experiences, made worse by the fact it was hot and rainy. So one week turned into another, and another and next thing you know it's full blown summer with temps in the 90s and humidity in what feels like the 100's. Attempting to drive the car in that weather without AC, to go and get the AC filled, would result in soaking my clothes, and the interior of the car, in sweat. So I had to wait for mild weather to make any attempt to try and get it filled...and there wouldn't be any mild weather again for almost 9 months. Up north I know it's common practice to put cars away for the winter...here people often put cars away for the summer mainly because of the rain, myself included. I wouldn't drive the car again until December. Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 16, 2018 Author Share Posted March 16, 2018 Fast forward to December, 2017...cold weather, or what local motorheads like to refer to as "Turbo Weather", had arrived. Normal people here say "hey it's gonna get cold this week", people in my circle say "hey man, turbo weather this week!" Now that it was cool out and there was no chance of rain, time to take the car to get the AC running right? Wrong...why do today what you can put off for tomorrow? I had been waiting so long to drive the car again that when the cool weather arrived all I wanted to do was drive...I wasn't in the mood to fix at the moment. Plus I knew I had a good 2-3 months to address the issue so naturally I procrastinated and just enjoyed the car. Quote Link to comment Share on other sites More sharing options...
Arif Posted March 17, 2018 Share Posted March 17, 2018 Wow what a great read and the attention to detail! A couple quick questions: 1. What size injectors are you running? 2. What tires are you running to hold all that power? Quote Link to comment Share on other sites More sharing options...
boosted300 Posted March 19, 2018 Author Share Posted March 19, 2018 (edited) On 3/16/2018 at 11:02 PM, Arif said: Wow what a great read and the attention to detail! A couple quick questions: 1. What size injectors are you running? 2. What tires are you running to hold all that power? The injectors are some outdated 1200cc's RC injectors. The tuner told me they are really sloppy and it's noticeable on the low end driveability and startup. He said that I could probably pick up a few HP at the same boost levels just from getting new, more efficient injectors. The tires are Nitto NT05R drag radials 275/40/17 (the front tires, at the top of the picture, are Yokohama A008's) Edited March 19, 2018 by boosted300 Quote Link to comment Share on other sites More sharing options...
Arif Posted March 19, 2018 Share Posted March 19, 2018 21 hours ago, boosted300 said: The injectors are some outdated 1200cc's RC injectors. The tuner told me they are really sloppy and it's noticeable on the low end driveability and startup. He said that I could probably pick up a few HP at the same boost levels just from getting new, more efficient injectors. I wonder if the sloppiness is from the size of the injectors or the brand. I'm running a set of RC injectors but they are 750cc. Quote Link to comment Share on other sites More sharing options...
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